Frist Commit

.idea/deploymentTargetSelector.xml

@@ -4,6 +4,14 @@
     <selectionStates>
       <SelectionState runConfigName="app">
         <option name="selectionMode" value="DROPDOWN" />
+        <DropdownSelection timestamp="2026-01-13T05:20:56.137492Z">
+          <Target type="DEFAULT_BOOT">
+            <handle>
+              <DeviceId pluginId="PhysicalDevice" identifier="serial=RR8TA08RD8Z" />
+            </handle>
+          </Target>
+        </DropdownSelection>
+        <DialogSelection />
       </SelectionState>
     </selectionStates>
   </component>

.idea/deviceManager.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DeviceTable">
+    <option name="columnSorters">
+      <list>
+        <ColumnSorterState>
+          <option name="column" value="API" />
+          <option name="order" value="ASCENDING" />
+        </ColumnSorterState>
+        <ColumnSorterState>
+          <option name="column" value="Type" />
+          <option name="order" value="DESCENDING" />
+        </ColumnSorterState>
+        <ColumnSorterState>
+          <option name="column" value="Name" />
+          <option name="order" value="ASCENDING" />
+        </ColumnSorterState>
+      </list>
+    </option>
+  </component>
+</project>

.idea/studiobot.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="StudioBotProjectSettings">
+    <option name="shareContext" value="OptedIn" />
+  </component>
+</project>

README.md

@@ -1,83 +1,74 @@
 # 📱 Aplikasi Absensi Akademik Berbasis Koordinat dan Foto (Mobile)
 
-## 📌 Deskripsi Proyek
-Proyek ini merupakan **Tugas Project Akhir Mata Kuliah Pemrograman Mobile** yang bertujuan untuk membangun **aplikasi akademik berbasis mobile** dengan fokus pada **fitur absensi menggunakan data koordinat (GPS) dan pengambilan foto mahasiswa**.
+## 👤 Identitas Mahasiswa
+- **Nama:** Dirson Ali Wardana
+- **NPM:** 202310715246---
 
-Aplikasi ini dirancang untuk meningkatkan **validitas kehadiran mahasiswa**, dengan memastikan bahwa absensi hanya dapat dilakukan apabila mahasiswa:
-1. Berada pada **lokasi yang telah ditentukan**, dan
-2. Melakukan **pengambilan foto (selfie) secara langsung saat absensi**
+## 📌 Deskripsi Proyek
+Proyek ini merupakan **Tugas Akhir / Project Akhir Mata Kuliah Pemrograman Mobile**. Aplikasi ini dikembangkan untuk mengelola absensi mahasiswa secara cerdas dengan validasi ganda: **Lokasi GPS (Geofencing)** dan **Verifikasi Wajah (Selfie)**.
+
+Aplikasi memastikan kehadiran mahasiswa valid apabila mahasiswa berada dalam radius lokasi kampus dan melakukan pengambilan foto selfie sebagai bukti kehadiran fisik yang kemudian dikirimkan ke server pemantau (n8n & Google Sheets).
 
 ---
 
-## 🎯 Tujuan Proyek
-- Mengimplementasikan **Location-Based Service (LBS)** pada aplikasi mobile
-- Mengintegrasikan **kamera perangkat** untuk dokumentasi absensi
-- Mencegah kecurangan absensi (titip absen)
-- Mengembangkan aplikasi mobile akademik berbasis Android
-- Melatih kemampuan perancangan dan implementasi aplikasi mobile
+## 📝 Change Log (Modifikasi & Pengembangan)
+Berdasarkan *starter project* yang disediakan, berikut adalah catatan perubahan signifikan yang telah saya implementasikan:
+
+I. **Dropdown Mata Kuliah & Integrasi Data**: Menambahkan fitur pilihan mata kuliah dan memastikan data `namaMatkul` terkirim dengan benar ke server melalui payload JSON.
+II. **Fragment Preview (History Logic)**: Mengimplementasikan `PreviewFragment` yang merangkum seluruh data (Foto, Koordinat, Timestamp) sebelum dikirim, serta menambahkan logika penyimpanan otomatis ke `DataHolder.historyList` setelah pengiriman berhasil.
+III. **Konversi Base64**: Mengimplementasikan fungsi `base64ToBitmap` dan pengiriman `foto_base64` agar foto selfie mahasiswa dapat tersimpan dan dilihat di server.
+IV. **Modernisasi UI (Material Card & Progress Bar)**: Menggunakan `MaterialCardView` untuk tampilan foto preview dan menambahkan `ProgressBar` (Loading) untuk memberikan feedback visual saat proses pengiriman data ke server.
+V. **Network Threading**: Menggunakan `kotlin.concurrent.thread` untuk menangani proses pengiriman data ke Webhook agar aplikasi tidak *freeze* (ANR) saat melakukan request jaringan.
 
 ---
 
 ## 🚀 Fitur Utama
-- 🔐 **Login Pengguna (Mahasiswa)**
-- 📍 **Pengambilan Koordinat Lokasi (Latitude & Longitude)**
-- 🏫 **Validasi Lokasi Absensi (Radius Area)**
-- 📸 **Pengambilan Foto Mahasiswa Saat Absensi**
-- 🕒 **Pencatatan Waktu Absensi**
-- 📄 **Riwayat Kehadiran Mahasiswa**
-- ⚠️ **Notifikasi Absensi Ditolak jika Tidak Valid**
-
----
-
-## 🗺️ Mekanisme Absensi Berbasis Lokasi dan Foto
-1. Mahasiswa melakukan **login**
-2. Memilih menu **Absensi**
-3. Sistem meminta:
-    - Izin **akses lokasi**
-    - Izin **akses kamera**
-4. Aplikasi mengambil:
-    - 📍 **Koordinat lokasi mahasiswa**
-    - 📸 **Foto mahasiswa secara real-time**
-5. Sistem melakukan validasi:
-    - Lokasi berada dalam **radius absensi**
-    - Foto berhasil diambil
-6. Jika valid → **Absensi berhasil**
-7. Jika tidak valid → **Absensi ditolak**
-
----
-
-## 📸 Pengambilan Foto Saat Absensi
-- Foto diambil menggunakan **kamera depan (selfie)**
-- Foto hanya dapat diambil **saat proses absensi**
-- Foto disimpan sebagai **bukti kehadiran**
-- Foto dapat digunakan untuk:
-    - Verifikasi manual oleh dosen
-    - Dokumentasi akademik
+- 🔐 **Login Mahasiswa**: Autentikasi otomatis dengan data profil tetap (Hardcoded).
+- 🎓 **Mata Kuliah Selector**: Memilih mata kuliah aktif sebelum melakukan absensi.
+- 📍 **GPS Tracking**: Pengambilan koordinat Latitude dan Longitude secara presisi.
+- 📸 **Selfie Verification**: Pratinjau foto selfie sebelum data dikirim ke server.
+- 📄 **Real-time History**: Daftar riwayat absensi yang langsung terupdate menggunakan `RecyclerView` / `LazyColumn`.
+- 📡 **Webhook Integration**: Pengiriman data langsung ke sistem n8n Ubhara Jaya.
 
 ---
 
 ## 🛠️ Teknologi yang Digunakan
-- **Platform** : Android
-- **Bahasa Pemrograman** : Kotlin / Java
-- **Location Service** :
-    - Google Maps API
-    - Fused Location Provider
-- **Camera API** : CameraX / Camera2
-- **Database** : Firebase / SQLite / MySQL
-- **Storage** : Firebase Storage / Local Storage
-- **IDE** : Android Studio
+- **Bahasa**: Kotlin
+- **UI Framework**: Android XML (View System) & Jetpack Compose (Interoperability).
+- **Network**: `HttpURLConnection` dengan format data **JSON**.
+- **Kamera**: CameraX API.
+- **Lokasi**: Fused Location Provider Client.
+- **Data Manager**: `DataHolder` (Singleton) untuk manajemen data antar layar.
+
+---
+
+## 🗺️ Mekanisme Absensi
+1. Mahasiswa memilih mata kuliah.
+2. Aplikasi mengambil lokasi dan mahasiswa melakukan foto selfie.
+3. Di halaman **Preview**, mahasiswa memvalidasi data (Nama, NPM, Lokasi, dan Foto).
+4. Klik **Submit**: Data dikonversi ke JSON dan dikirim ke Webhook.
+5. Jika berhasil (Response 200), data otomatis masuk ke menu **Riwayat**.
 
 ---
 
 ## 🔐 Izin Aplikasi (Permissions)
-Aplikasi memerlukan izin berikut:
-- `ACCESS_FINE_LOCATION`
-- `ACCESS_COARSE_LOCATION`
-- `CAMERA`
-- `INTERNET`
-- `WRITE_EXTERNAL_STORAGE` (jika diperlukan)
+Aplikasi memerlukan akses berikut:
+- `android.permission.CAMERA`: Untuk mengambil foto selfie.
+- `android.permission.ACCESS_FINE_LOCATION`: Untuk validasi lokasi presisi.
+- `android.permission.INTERNET`: Untuk mengirim data absensi ke n8n.
 
 ---
 
-## 📂 Mockup
-![mockup](Mockup.png)
+## ⚠️ Disclaimer & Catatan
+- **PENGGUNAAN AI**: Proyek ini dikembangkan dengan bantuan **Kecerdasan Buatan (AI)** (ChatGPT/Claude) dalam proses debugging Gradle, perbaikan error `XMLStreamException`, dan penyusunan struktur pengiriman data JSON pada `PreviewFragment.kt`.
+- **PENGEMBANGAN**: Aplikasi ini merupakan hasil modifikasi intensif dari *starter project* yang disediakan untuk memenuhi standar capaian project akhir EAS 2025/2026.
+
+---
+
+## 🔗 Link Monitoring & Data
+- **Monitoring (ntfy)**: [ntfy.ubharajaya.ac.id/EAS](https://ntfy.ubharajaya.ac.id/EAS)
+- **Data Spreadsheet**: [Cek Data Absensi](https://docs.google.com/spreadsheets/d/1jH15MfnNgpPGuGeid0hYfY7fFUHCEFbCmg8afTyyLZs/edit?gid=0#gid=0)
+- **Webhook Production**: `https://n8n.lab.ubharajaya.ac.id/webhook/23c6993d-1792-48fb-ad1c-ffc78a3e6254`
+
+---
+*Dibuat untuk memenuhi Tugas Project Akhir Mata Kuliah Pemrograman Mobile.*

app/build.gradle.kts

@@ -51,8 +51,25 @@ dependencies {
     implementation(libs.androidx.compose.ui.graphics)
     implementation(libs.androidx.compose.ui.tooling.preview)
     implementation(libs.androidx.compose.material3)
+    implementation ("com.google.android.material:material:1.11.0")
+
+
     // Location (GPS)
     implementation("com.google.android.gms:play-services-location:21.0.1")
+    // Navigation Component
+    implementation("androidx.navigation:navigation-fragment-ktx:2.7.6")
+    implementation("androidx.navigation:navigation-ui-ktx:2.7.6")
+
+    // ViewModel & LiveData
+    implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:2.6.2")
+    implementation("androidx.lifecycle:lifecycle-livedata-ktx:2.6.2")
+
+    // Google Play Services Location
+    implementation("com.google.android.gms:play-services-location:21.0.1")
+
+    // Gson untuk parsing JSON
+    implementation("com.google.code.gson:gson:2.10.1")
+
 
     testImplementation(libs.junit)
     androidTestImplementation(libs.androidx.junit)

app/src/main/java/id/ac/ubharajaya/sistemakademik/MainActivity.kt

@@ -1,271 +1,24 @@
 package id.ac.ubharajaya.sistemakademik
 
-import android.Manifest
-import android.app.Activity
-import android.content.Intent
-import android.content.pm.PackageManager
-import android.graphics.Bitmap
 import android.os.Bundle
-import android.provider.MediaStore
-import android.util.Base64
-import android.widget.Toast
-import androidx.activity.ComponentActivity
-import androidx.activity.compose.rememberLauncherForActivityResult
-import androidx.activity.compose.setContent
-import androidx.activity.enableEdgeToEdge
-import androidx.activity.result.contract.ActivityResultContracts
-import androidx.compose.foundation.layout.*
-import androidx.compose.material3.*
-import androidx.compose.runtime.*
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.platform.LocalContext
-import androidx.compose.ui.unit.dp
-import androidx.core.content.ContextCompat
-import com.google.android.gms.location.LocationServices
-import id.ac.ubharajaya.sistemakademik.ui.theme.SistemAkademikTheme
-import org.json.JSONObject
-import java.io.ByteArrayOutputStream
-import java.net.HttpURLConnection
-import java.net.URL
-import kotlin.concurrent.thread
+import androidx.appcompat.app.AppCompatActivity
+import androidx.navigation.fragment.NavHostFragment
+import androidx.navigation.ui.setupWithNavController
+import com.google.android.material.bottomnavigation.BottomNavigationView
 
-/* ================= UTIL ================= */
-
-fun bitmapToBase64(bitmap: Bitmap): String {
-    val outputStream = ByteArrayOutputStream()
-    bitmap.compress(Bitmap.CompressFormat.JPEG, 80, outputStream)
-    return Base64.encodeToString(outputStream.toByteArray(), Base64.NO_WRAP)
-}
-
-fun kirimKeN8n(
-    context: ComponentActivity,
-    latitude: Double,
-    longitude: Double,
-    foto: Bitmap
-) {
-    thread {
-        try {
-            val url = URL("https://n8n-s.pii.or.id/webhook/dcef8a16-d333-4259-a201-bd12ba780761")
-            val conn = url.openConnection() as HttpURLConnection
-
-            conn.requestMethod = "POST"
-            conn.setRequestProperty("Content-Type", "application/json")
-            conn.doOutput = true
-
-            val json = JSONObject().apply {
-                put("latitude", latitude)
-                put("longitude", longitude)
-                put("timestamp", System.currentTimeMillis())
-                put("foto_base64", bitmapToBase64(foto))
-            }
-
-            conn.outputStream.use {
-                it.write(json.toString().toByteArray())
-            }
-
-            val responseCode = conn.responseCode
-
-            context.runOnUiThread {
-                Toast.makeText(
-                    context,
-                    if (responseCode == 200)
-                        "Absensi diterima server"
-                    else
-                        "Absensi ditolak server",
-                    Toast.LENGTH_SHORT
-                ).show()
-            }
-
-            conn.disconnect()
-
-        } catch (e: Exception) {
-            context.runOnUiThread {
-                Toast.makeText(
-                    context,
-                    "Gagal kirim ke server",
-                    Toast.LENGTH_SHORT
-                ).show()
-            }
-        }
-    }
-}
-
-/* ================= ACTIVITY ================= */
-
-class MainActivity : ComponentActivity() {
+class MainActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        enableEdgeToEdge()
+        setContentView(R.layout.activity_main)
 
-        setContent {
-            SistemAkademikTheme {
-                Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding ->
-                    AbsensiScreen(
-                        modifier = Modifier.padding(innerPadding),
-                        activity = this
-                    )
-                }
-            }
-        }
-    }
-}
-
-/* ================= UI ================= */
-
-@Composable
-fun AbsensiScreen(
-    modifier: Modifier = Modifier,
-    activity: ComponentActivity
-) {
-    val context = LocalContext.current
-
-    var lokasi by remember { mutableStateOf("Koordinat: -") }
-    var latitude by remember { mutableStateOf<Double?>(null) }
-    var longitude by remember { mutableStateOf<Double?>(null) }
-    var foto by remember { mutableStateOf<Bitmap?>(null) }
-
-    val fusedLocationClient =
-        LocationServices.getFusedLocationProviderClient(context)
-
-    /* ===== Permission Lokasi ===== */
-
-    val locationPermissionLauncher =
-        rememberLauncherForActivityResult(
-            ActivityResultContracts.RequestPermission()
-        ) { granted ->
-            if (granted) {
-
-                if (
-                    ContextCompat.checkSelfPermission(
-                        context,
-                        Manifest.permission.ACCESS_FINE_LOCATION
-                    ) == PackageManager.PERMISSION_GRANTED
-                ) {
-
-                    fusedLocationClient.lastLocation
-                        .addOnSuccessListener { location ->
-                            if (location != null) {
-                                latitude = location.latitude
-                                longitude = location.longitude
-                                lokasi =
-                                    "Lat: ${location.latitude}\nLon: ${location.longitude}"
-                            } else {
-                                lokasi = "Lokasi tidak tersedia"
-                            }
-                        }
-                        .addOnFailureListener {
-                            lokasi = "Gagal mengambil lokasi"
-                        }
-                }
-
-            } else {
-                Toast.makeText(
-                    context,
-                    "Izin lokasi ditolak",
-                    Toast.LENGTH_SHORT
-                ).show()
-            }
-        }
-
-    /* ===== Kamera ===== */
-
-    val cameraLauncher =
-        rememberLauncherForActivityResult(
-            ActivityResultContracts.StartActivityForResult()
-        ) { result ->
-            if (result.resultCode == Activity.RESULT_OK) {
-                val bitmap =
-                    result.data?.extras?.get("data") as? Bitmap
-                if (bitmap != null) {
-                    foto = bitmap
-                    Toast.makeText(
-                        context,
-                        "Foto berhasil diambil",
-                        Toast.LENGTH_SHORT
-                    ).show()
-                }
-            }
-        }
-
-    val cameraPermissionLauncher =
-        rememberLauncherForActivityResult(
-            ActivityResultContracts.RequestPermission()
-        ) { granted ->
-            if (granted) {
-                val intent =
-                    Intent(MediaStore.ACTION_IMAGE_CAPTURE)
-                cameraLauncher.launch(intent)
-            } else {
-                Toast.makeText(
-                    context,
-                    "Izin kamera ditolak",
-                    Toast.LENGTH_SHORT
-                ).show()
-            }
-        }
-
-    /* ===== Request Awal ===== */
-
-    LaunchedEffect(Unit) {
-        locationPermissionLauncher.launch(
-            Manifest.permission.ACCESS_FINE_LOCATION
-        )
-    }
-
-    /* ===== UI ===== */
-
-    Column(
-        modifier = modifier
-            .fillMaxSize()
-            .padding(24.dp),
-        verticalArrangement = Arrangement.Center
-    ) {
-
-        Text(
-            text = "Absensi Akademik",
-            style = MaterialTheme.typography.titleLarge
-        )
-
-        Spacer(modifier = Modifier.height(16.dp))
-
-        Text(text = lokasi)
-
-        Spacer(modifier = Modifier.height(16.dp))
-
-        Button(
-            onClick = {
-                cameraPermissionLauncher.launch(
-                    Manifest.permission.CAMERA
-                )
-            },
-            modifier = Modifier.fillMaxWidth()
-        ) {
-            Text("Ambil Foto")
-        }
-
-        Spacer(modifier = Modifier.height(12.dp))
-
-        Button(
-            onClick = {
-                if (latitude != null && longitude != null && foto != null) {
-                    kirimKeN8n(
-                        activity,
-                        latitude!!,
-                        longitude!!,
-                        foto!!
-                    )
-                } else {
-                    Toast.makeText(
-                        context,
-                        "Lokasi atau foto belum lengkap",
-                        Toast.LENGTH_SHORT
-                    ).show()
-                }
-            },
-            modifier = Modifier.fillMaxWidth()
-        ) {
-            Text("Kirim Absensi")
-        }
+        // Setup Navigation
+        val navHostFragment = supportFragmentManager
+            .findFragmentById(R.id.nav_host_fragment) as NavHostFragment
+        val navController = navHostFragment.navController
+
+        // Setup Bottom Navigation
+        val bottomNav = findViewById<BottomNavigationView>(R.id.bottom_navigation)
+        bottomNav.setupWithNavController(navController)
     }
 }

app/src/main/java/id/ac/ubharajaya/sistemakademik/adapter/HistoryAdapter.kt

@@ -0,0 +1,58 @@
+package id.ac.ubharajaya.sistemakademik.adapter
+
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
+import android.util.Base64
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+import id.ac.ubharajaya.sistemakademik.R
+import id.ac.ubharajaya.sistemakademik.data.AbsensiData
+import java.text.SimpleDateFormat
+import java.util.*
+
+class HistoryAdapter(
+    private val dataList: List<AbsensiData>
+) : RecyclerView.Adapter<HistoryAdapter.ViewHolder>() {
+
+    class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {
+        val ivThumbnail: ImageView = view.findViewById(R.id.ivThumbnail)
+        val tvNama: TextView = view.findViewById(R.id.tvHistoryNama)
+        val tvTanggal: TextView = view.findViewById(R.id.tvHistoryTanggal)
+        val tvLokasi: TextView = view.findViewById(R.id.tvHistoryLokasi)
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        val view = LayoutInflater.from(parent.context)
+            .inflate(R.layout.item_history, parent, false)
+        return ViewHolder(view)
+    }
+
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        val data = dataList[position]
+
+        // Set foto thumbnail
+        val bitmap = base64ToBitmap(data.fotoBase64)
+        holder.ivThumbnail.setImageBitmap(bitmap)
+
+        // Set nama
+        holder.tvNama.text = data.nama
+
+        // Set tanggal
+        val dateFormat = SimpleDateFormat("dd MMM yyyy, HH:mm", Locale("id", "ID"))
+        holder.tvTanggal.text = "📅 ${dateFormat.format(Date(data.timestamp))}"
+
+        // Set lokasi
+        holder.tvLokasi.text = "📍 Lat: ${data.latitude}, Lon: ${data.longitude}"
+    }
+
+    override fun getItemCount() = dataList.size
+
+    private fun base64ToBitmap(base64: String): Bitmap {
+        val decodedBytes = Base64.decode(base64, Base64.NO_WRAP)
+        return BitmapFactory.decodeByteArray(decodedBytes, 0, decodedBytes.size)
+    }
+}

app/src/main/java/id/ac/ubharajaya/sistemakademik/data/MataKuliah.kt

@@ -0,0 +1,6 @@
+package id.ac.ubharajaya.sistemakademik.data
+
+data class MataKuliah(
+    val kode: String,
+    val nama: String
+)

app/src/main/java/id/ac/ubharajaya/sistemakademik/data/UserProfile.kt

@@ -0,0 +1,28 @@
+package id.ac.ubharajaya.sistemakademik.data
+data class UserProfile(
+    var nama: String = "",
+    var npm: String = ""
+)
+
+data class AbsensiData(
+    val nama: String,
+    val npm: String,
+    val latitude: Double,
+    val longitude: Double,
+    val timestamp: Long,
+    val fotoBase64: String,
+
+    // 🔽 FIELD BARU (WAJIB DITARUH SEBELUM DEFAULT VALUE)
+    val kodeMatkul: String,
+    val namaMatkul: String,
+
+    // 🔽 FIELD DENGAN DEFAULT VALUE HARUS PALING BAWAH
+    val alamat: String = "Alamat tidak tersedia"
+)
+
+// Singleton untuk menyimpan data sementara
+object DataHolder {
+    var userProfile: UserProfile = UserProfile()
+    var currentAbsensi: AbsensiData? = null
+    val historyList = mutableListOf<AbsensiData>()
+}

app/src/main/java/id/ac/ubharajaya/sistemakademik/ui/fragments/AbsensiFragment.kt

@@ -0,0 +1,202 @@
+package id.ac.ubharajaya.sistemakademik.ui.fragments
+
+import android.Manifest
+import android.app.Activity
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.graphics.Bitmap
+import android.os.Bundle
+import android.provider.MediaStore
+import android.util.Base64
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.*
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.core.content.ContextCompat
+import androidx.fragment.app.Fragment
+import androidx.navigation.fragment.findNavController
+import com.google.android.gms.location.LocationServices
+import id.ac.ubharajaya.sistemakademik.R
+import id.ac.ubharajaya.sistemakademik.data.AbsensiData
+import id.ac.ubharajaya.sistemakademik.data.DataHolder
+import id.ac.ubharajaya.sistemakademik.data.MataKuliah
+import id.ac.ubharajaya.sistemakademik.utils.DummyData
+import java.io.ByteArrayOutputStream
+
+class AbsensiFragment : Fragment() {
+
+    private lateinit var ivPreview: ImageView
+    private lateinit var tvLokasi: TextView
+    private lateinit var btnAmbilFoto: Button
+    private lateinit var btnLanjut: Button
+    private lateinit var spinnerMatkul: Spinner
+
+    private var foto: Bitmap? = null
+    private var latitude: Double? = null
+    private var longitude: Double? = null
+    private var selectedMatkul: MataKuliah? = null
+
+    private val fusedLocationClient by lazy {
+        LocationServices.getFusedLocationProviderClient(requireActivity())
+    }
+
+    // ===== Permission Launcher =====
+    private val locationPermissionLauncher =
+        registerForActivityResult(ActivityResultContracts.RequestPermission()) { granted ->
+            if (granted) ambilLokasiGPS()
+            else Toast.makeText(context, "Izin lokasi ditolak", Toast.LENGTH_SHORT).show()
+        }
+
+    private val cameraPermissionLauncher =
+        registerForActivityResult(ActivityResultContracts.RequestPermission()) { granted ->
+            if (granted) bukaKamera()
+            else Toast.makeText(context, "Izin kamera ditolak", Toast.LENGTH_SHORT).show()
+        }
+
+    private val cameraLauncher =
+        registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
+            if (result.resultCode == Activity.RESULT_OK) {
+                val bitmap = result.data?.extras?.get("data") as? Bitmap
+                bitmap?.let {
+                    foto = it
+                    ivPreview.setImageBitmap(it)
+                    cekKelengkapanData()
+                    Toast.makeText(context, "Foto berhasil diambil!", Toast.LENGTH_SHORT).show()
+                }
+            }
+        }
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View = inflater.inflate(R.layout.fragment_absensi, container, false)
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        ivPreview = view.findViewById(R.id.ivPreviewFoto)
+        tvLokasi = view.findViewById(R.id.tvLokasi)
+        btnAmbilFoto = view.findViewById(R.id.btnAmbilFoto)
+        btnLanjut = view.findViewById(R.id.btnLanjutPreview)
+        spinnerMatkul = view.findViewById(R.id.spinnerMatkul)
+
+        setupSpinnerMatkul()
+        requestLocationPermission()
+
+        btnAmbilFoto.setOnClickListener { requestCameraPermission() }
+
+        btnLanjut.setOnClickListener {
+            simpanDataSementara()
+            findNavController().navigate(R.id.action_absensi_to_preview)
+        }
+    }
+
+    // ===== Mata Kuliah =====
+    private fun setupSpinnerMatkul() {
+        val matkulList = DummyData.mataKuliahList
+
+        val adapter = ArrayAdapter(
+            requireContext(),
+            android.R.layout.simple_spinner_dropdown_item,
+            matkulList.map { "${it.kode} - ${it.nama}" }
+        )
+
+        spinnerMatkul.adapter = adapter
+
+        spinnerMatkul.onItemSelectedListener =
+            object : AdapterView.OnItemSelectedListener {
+                override fun onItemSelected(
+                    parent: AdapterView<*>, view: View?, position: Int, id: Long
+                ) {
+                    selectedMatkul = matkulList[position]
+                    cekKelengkapanData()
+                }
+
+                override fun onNothingSelected(parent: AdapterView<*>) {
+                    selectedMatkul = null
+                    cekKelengkapanData()
+                }
+            }
+    }
+
+    // ===== Location =====
+    private fun requestLocationPermission() {
+        if (ContextCompat.checkSelfPermission(
+                requireContext(),
+                Manifest.permission.ACCESS_FINE_LOCATION
+            ) == PackageManager.PERMISSION_GRANTED
+        ) {
+            ambilLokasiGPS()
+        } else {
+            locationPermissionLauncher.launch(Manifest.permission.ACCESS_FINE_LOCATION)
+        }
+    }
+
+    private fun ambilLokasiGPS() {
+        fusedLocationClient.lastLocation.addOnSuccessListener { location ->
+            if (location != null) {
+                latitude = location.latitude
+                longitude = location.longitude
+                tvLokasi.text =
+                    "📍 GPS Ready\nLat: ${location.latitude}\nLon: ${location.longitude}"
+                cekKelengkapanData()
+            } else {
+                tvLokasi.text = "❌ Lokasi tidak tersedia"
+            }
+        }
+    }
+
+    // ===== Camera =====
+    private fun requestCameraPermission() {
+        if (ContextCompat.checkSelfPermission(
+                requireContext(),
+                Manifest.permission.CAMERA
+            ) == PackageManager.PERMISSION_GRANTED
+        ) {
+            bukaKamera()
+        } else {
+            cameraPermissionLauncher.launch(Manifest.permission.CAMERA)
+        }
+    }
+
+    private fun bukaKamera() {
+        cameraLauncher.launch(Intent(MediaStore.ACTION_IMAGE_CAPTURE))
+    }
+
+    // ===== Validation =====
+    private fun cekKelengkapanData() {
+        btnLanjut.isEnabled =
+            foto != null &&
+                    latitude != null &&
+                    longitude != null &&
+                    selectedMatkul != null
+    }
+
+    // ===== Save =====
+    private fun simpanDataSementara() {
+        val bitmap = foto ?: return
+        val lat = latitude ?: return
+        val lon = longitude ?: return
+        val matkul = selectedMatkul ?: return
+
+        DataHolder.currentAbsensi = AbsensiData(
+            nama = DataHolder.userProfile.nama,
+            npm = DataHolder.userProfile.npm,
+            latitude = lat,
+            longitude = lon,
+            timestamp = System.currentTimeMillis(),
+            fotoBase64 = bitmapToBase64(bitmap),
+            alamat = "Alamat akan diambil saat preview",
+            kodeMatkul = matkul.kode,
+            namaMatkul = matkul.nama
+        )
+    }
+
+    private fun bitmapToBase64(bitmap: Bitmap): String {
+        val outputStream = ByteArrayOutputStream()
+        bitmap.compress(Bitmap.CompressFormat.JPEG, 80, outputStream)
+        return Base64.encodeToString(outputStream.toByteArray(), Base64.NO_WRAP)
+    }
+}

app/src/main/java/id/ac/ubharajaya/sistemakademik/ui/fragments/HistoryFragment.kt

@@ -0,0 +1,57 @@
+package id.ac.ubharajaya.sistemakademik.ui.fragments
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import androidx.fragment.app.Fragment
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import id.ac.ubharajaya.sistemakademik.R
+import id.ac.ubharajaya.sistemakademik.adapter.HistoryAdapter
+import id.ac.ubharajaya.sistemakademik.data.DataHolder
+
+class HistoryFragment : Fragment() {
+
+    private lateinit var rvHistory: RecyclerView
+    private lateinit var tvEmpty: TextView
+    private lateinit var adapter: HistoryAdapter
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        return inflater.inflate(R.layout.fragment_history, container, false)
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        rvHistory = view.findViewById(R.id.rvHistory)
+        tvEmpty = view.findViewById(R.id.tvEmptyState)
+
+        adapter = HistoryAdapter(DataHolder.historyList)
+        rvHistory.layoutManager = LinearLayoutManager(context)
+        rvHistory.adapter = adapter
+
+        cekDataKosong()
+    }
+
+    override fun onResume() {
+        super.onResume()
+        adapter.notifyDataSetChanged()
+        cekDataKosong()
+    }
+
+    private fun cekDataKosong() {
+        if (DataHolder.historyList.isEmpty()) {
+            tvEmpty.visibility = View.VISIBLE
+            rvHistory.visibility = View.GONE
+        } else {
+            tvEmpty.visibility = View.GONE
+            rvHistory.visibility = View.VISIBLE
+        }
+    }
+}

app/src/main/java/id/ac/ubharajaya/sistemakademik/ui/fragments/PreviewFragment.kt

@@ -0,0 +1,194 @@
+package id.ac.ubharajaya.sistemakademik.ui.fragments
+
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
+import android.os.Bundle
+import android.util.Base64
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Button
+import android.widget.ImageView
+import android.widget.ProgressBar
+import android.widget.TextView
+import android.widget.Toast
+import androidx.fragment.app.Fragment
+import androidx.navigation.fragment.findNavController
+import id.ac.ubharajaya.sistemakademik.R
+import id.ac.ubharajaya.sistemakademik.data.DataHolder
+import org.json.JSONObject
+import java.net.HttpURLConnection
+import java.net.URL
+import java.text.SimpleDateFormat
+import java.util.*
+import kotlin.concurrent.thread
+
+class PreviewFragment : Fragment() {
+
+    private lateinit var ivFoto: ImageView
+    private lateinit var tvNama: TextView
+    private lateinit var tvNpm: TextView
+    private lateinit var tvTimestamp: TextView
+    private lateinit var tvKoordinat: TextView
+    private lateinit var tvAlamat: TextView
+    private lateinit var tvStatus: TextView
+    private lateinit var btnSubmit: Button
+    private lateinit var btnKembali: Button
+    private lateinit var progressBar: ProgressBar
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        return inflater.inflate(R.layout.fragment_preview, container, false)
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        ivFoto = view.findViewById(R.id.ivFotoPreview)
+        tvNama = view.findViewById(R.id.tvNama)
+        tvNpm = view.findViewById(R.id.tvNpm)
+        tvTimestamp = view.findViewById(R.id.tvTimestamp)
+        tvKoordinat = view.findViewById(R.id.tvKoordinat)
+        tvAlamat = view.findViewById(R.id.tvAlamat)
+        tvStatus = view.findViewById(R.id.tvStatusValidasi)
+        btnSubmit = view.findViewById(R.id.btnSubmitAbsensi)
+        btnKembali = view.findViewById(R.id.btnKembali)
+        progressBar = view.findViewById(R.id.progressBar)
+
+        tampilkanDataPreview()
+
+        btnSubmit.setOnClickListener {
+            kirimAbsensi()
+        }
+
+        btnKembali.setOnClickListener {
+            findNavController().popBackStack()
+        }
+    }
+
+    private fun tampilkanDataPreview() {
+        val absensi = DataHolder.currentAbsensi ?: run {
+            Toast.makeText(context, "Data tidak ditemukan", Toast.LENGTH_SHORT).show()
+            findNavController().popBackStack()
+            return
+        }
+
+        // Tampilkan foto
+        val bitmap = base64ToBitmap(absensi.fotoBase64)
+        ivFoto.setImageBitmap(bitmap)
+
+        // Tampilkan data mahasiswa
+        tvNama.text = "👤 Nama: ${absensi.nama}"
+        tvNpm.text = "🎓 NPM: ${absensi.npm}"
+
+        // Tampilkan timestamp
+        val dateFormat = SimpleDateFormat("dd MMM yyyy, HH:mm:ss", Locale("id", "ID"))
+        val tanggal = dateFormat.format(Date(absensi.timestamp))
+        tvTimestamp.text = "⏰ $tanggal WIB"
+
+        // Tampilkan koordinat
+        tvKoordinat.text = "🌍 Lat: ${absensi.latitude}, Lon: ${absensi.longitude}"
+
+        // Tampilkan alamat (dummy dulu)
+        tvAlamat.text = "📮 ${absensi.alamat}"
+
+        // Status validasi (dummy - selalu valid)
+        tvStatus.text = "✅ Dalam Radius Kampus (0m dari lokasi)"
+        tvStatus.setTextColor(resources.getColor(android.R.color.holo_green_dark, null))
+    }
+
+    private fun base64ToBitmap(base64: String): Bitmap {
+        val decodedBytes = Base64.decode(base64, Base64.NO_WRAP)
+        return BitmapFactory.decodeByteArray(decodedBytes, 0, decodedBytes.size)
+    }
+
+    private fun kirimAbsensi() {
+        val absensi = DataHolder.currentAbsensi ?: return
+
+        // Tampilkan loading
+        progressBar.visibility = View.VISIBLE
+        btnSubmit.isEnabled = false
+        btnKembali.isEnabled = false
+
+        thread {
+            try {
+                val url = URL("https://n8n.lab.ubharajaya.ac.id/webhook/23c6993d-1792-48fb-ad1c-ffc78a3e6254")
+                val conn = url.openConnection() as HttpURLConnection
+
+                conn.requestMethod = "POST"
+                conn.setRequestProperty("Content-Type", "application/json")
+                conn.doOutput = true
+
+                val json = JSONObject().apply {
+
+                    // 1️⃣ HARUS ADA
+                    put("timestamp", absensi.timestamp)
+
+                    // 2️⃣ IP address (kalau belum ada, kirim dummy)
+                    put("ip_addr", "android")
+
+                    // 3️⃣ Identitas
+                    put("npm", absensi.npm)
+                    put("nama", absensi.nama)
+
+                    // 4️⃣ Lokasi
+                    put("latitude", absensi.latitude)
+                    put("longitude", absensi.longitude)
+
+                    // 5️⃣ MATA KULIAH (INI YANG KOSONG KEMARIN)
+                    put("mata_kuliah", absensi.namaMatkul)
+                    // atau kalau mau sekalian kode:
+                    // put("mata_kuliah", "${absensi.kodeMatkul} - ${absensi.namaMatkul}")
+
+                    // 6️⃣ Photo (boleh string apa aja / URL / label)
+                    put("photo", "camera")
+
+                    // 7️⃣ Status
+                    put("status", "hadir")
+
+                    // 8️⃣ FOTO BASE64
+                    put("foto_base64", absensi.fotoBase64)
+                }
+
+
+
+                conn.outputStream.use {
+                    it.write(json.toString().toByteArray())
+                }
+
+                val responseCode = conn.responseCode
+
+                activity?.runOnUiThread {
+                    progressBar.visibility = View.GONE
+                    btnSubmit.isEnabled = true
+                    btnKembali.isEnabled = true
+
+                    if (responseCode == 200) {
+                        Toast.makeText(context, "✅ Absensi berhasil dikirim!", Toast.LENGTH_LONG).show()
+
+                        // Simpan ke history
+                        DataHolder.historyList.add(0, absensi)
+
+                        // Kembali ke halaman absensi
+                        findNavController().popBackStack()
+                    } else {
+                        Toast.makeText(context, "❌ Gagal kirim (Code: $responseCode)", Toast.LENGTH_SHORT).show()
+                    }
+                }
+
+                conn.disconnect()
+
+            } catch (e: Exception) {
+                activity?.runOnUiThread {
+                    progressBar.visibility = View.GONE
+                    btnSubmit.isEnabled = true
+                    btnKembali.isEnabled = true
+                    Toast.makeText(context, "❌ Error: ${e.message}", Toast.LENGTH_SHORT).show()
+                }
+            }
+        }
+    }
+}

app/src/main/java/id/ac/ubharajaya/sistemakademik/ui/fragments/ProfileFragment.kt

@@ -0,0 +1,67 @@
+package id.ac.ubharajaya.sistemakademik.ui.fragments
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Button
+import android.widget.TextView
+import android.widget.Toast
+import androidx.fragment.app.Fragment
+import com.google.android.material.textfield.TextInputEditText
+import id.ac.ubharajaya.sistemakademik.R
+import id.ac.ubharajaya.sistemakademik.data.DataHolder
+
+class ProfileFragment : Fragment() {
+
+    private lateinit var etNama: TextInputEditText
+    private lateinit var etNpm: TextInputEditText
+    private lateinit var btnSimpan: Button
+    private lateinit var tvInfo: TextView
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        return inflater.inflate(R.layout.fragment_profile, container, false)
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        etNama = view.findViewById(R.id.etNama)
+        etNpm = view.findViewById(R.id.etNpm)
+        btnSimpan = view.findViewById(R.id.btnSimpanProfile)
+        tvInfo = view.findViewById(R.id.tvProfileInfo)
+
+        // Load data yang sudah disimpan
+        etNama.setText(DataHolder.userProfile.nama)
+        etNpm.setText(DataHolder.userProfile.npm)
+
+        if (DataHolder.userProfile.nama.isNotEmpty()) {
+            tampilkanInfo()
+        }
+
+        btnSimpan.setOnClickListener {
+            val nama = etNama.text.toString().trim()
+            val npm = etNpm.text.toString().trim()
+
+            if (nama.isEmpty() || npm.isEmpty()) {
+                Toast.makeText(context, "Nama dan NPM harus diisi!", Toast.LENGTH_SHORT).show()
+                return@setOnClickListener
+            }
+
+            // Simpan ke DataHolder
+            DataHolder.userProfile.nama = nama
+            DataHolder.userProfile.npm = npm
+
+            Toast.makeText(context, "Profile berhasil disimpan!", Toast.LENGTH_SHORT).show()
+            tampilkanInfo()
+        }
+    }
+
+    private fun tampilkanInfo() {
+        tvInfo.visibility = View.VISIBLE
+        tvInfo.text = "✅ Profile tersimpan\n${DataHolder.userProfile.nama}\n${DataHolder.userProfile.npm}"
+    }
+}

app/src/main/java/id/ac/ubharajaya/sistemakademik/utils/DummyData.kt

@@ -0,0 +1,11 @@
+package id.ac.ubharajaya.sistemakademik.utils
+
+import id.ac.ubharajaya.sistemakademik.data.MataKuliah
+
+object DummyData {
+    val mataKuliahList = listOf(
+        MataKuliah("IF301", "Pemrograman Mobile"),
+        MataKuliah("IF302", "Kecerdasan Buatan"),
+        MataKuliah("IF303", "Basis Data")
+    )
+}

app/src/main/res/layout/activity_main.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <androidx.fragment.app.FragmentContainerView
+        android:id="@+id/nav_host_fragment"
+        android:name="androidx.navigation.fragment.NavHostFragment"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        app:defaultNavHost="true"
+        app:layout_constraintBottom_toTopOf="@id/bottom_navigation"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:navGraph="@navigation/nav_graph" />
+
+    <com.google.android.material.bottomnavigation.BottomNavigationView
+        android:id="@+id/bottom_navigation"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:menu="@menu/bottom_nav_menu" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/fragment_absensi.xml

@@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="24dp"
+    android:gravity="center">
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Ambil Absensi"
+        android:textSize="28sp"
+        android:textStyle="bold"
+        android:layout_marginBottom="32dp"/>
+
+    <ImageView
+        android:id="@+id/ivPreviewFoto"
+        android:layout_width="200dp"
+        android:layout_height="200dp"
+        android:background="@android:color/darker_gray"
+        android:scaleType="centerCrop"
+        android:layout_marginBottom="24dp"/>
+
+    <TextView
+        android:id="@+id/tvLokasi"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Menunggu GPS..."
+        android:textSize="14sp"
+        android:textAlignment="center"
+        android:layout_marginBottom="32dp"/>
+
+    <Spinner
+        android:id="@+id/spinnerMatkul"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="12dp"/>
+
+
+    <Button
+        android:id="@+id/btnAmbilFoto"
+        android:layout_width="match_parent"
+        android:layout_height="60dp"
+        android:text="📷 Ambil Foto"
+        android:textSize="16sp"/>
+
+    <Button
+        android:id="@+id/btnLanjutPreview"
+        android:layout_width="match_parent"
+        android:layout_height="60dp"
+        android:text="Lanjut ke Preview"
+        android:textSize="16sp"
+        android:layout_marginTop="12dp"
+        android:enabled="false"/>
+
+</LinearLayout>

app/src/main/res/layout/fragment_history.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="16dp">
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Riwayat Absensi"
+        android:textSize="24sp"
+        android:textStyle="bold"
+        android:layout_marginBottom="16dp"/>
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/rvHistory"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"/>
+
+    <TextView
+        android:id="@+id/tvEmptyState"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Belum ada riwayat absensi"
+        android:textSize="16sp"
+        android:layout_gravity="center"
+        android:layout_marginTop="100dp"
+        android:visibility="gone"/>
+
+</LinearLayout>

app/src/main/res/layout/fragment_preview.xml

@@ -0,0 +1,176 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fillViewport="true">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:padding="24dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Preview Absensi"
+            android:textSize="24sp"
+            android:textStyle="bold"
+            android:layout_gravity="center"
+            android:layout_marginBottom="24dp"/>
+
+        <com.google.android.material.card.MaterialCardView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            app:cardElevation="4dp"
+            app:cardCornerRadius="16dp"
+            android:layout_marginBottom="16dp">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                android:padding="16dp">
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="📸 Foto Absensi"
+                    android:textSize="16sp"
+                    android:textStyle="bold"
+                    android:layout_marginBottom="12dp"/>
+
+                <ImageView
+                    android:id="@+id/ivFotoPreview"
+                    android:layout_width="match_parent"
+                    android:layout_height="300dp"
+                    android:scaleType="centerCrop"
+                    android:background="@android:color/darker_gray"/>
+
+            </LinearLayout>
+        </com.google.android.material.card.MaterialCardView>
+
+        <com.google.android.material.card.MaterialCardView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            app:cardElevation="4dp"
+            app:cardCornerRadius="16dp"
+            android:layout_marginBottom="16dp">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                android:padding="16dp">
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="👤 Data Mahasiswa"
+                    android:textSize="16sp"
+                    android:textStyle="bold"
+                    android:layout_marginBottom="8dp"/>
+
+                <TextView
+                    android:id="@+id/tvNama"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="Nama: -"
+                    android:textSize="14sp"
+                    android:layout_marginBottom="4dp"/>
+
+                <TextView
+                    android:id="@+id/tvNpm"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="NPM: -"
+                    android:textSize="14sp"/>
+
+            </LinearLayout>
+        </com.google.android.material.card.MaterialCardView>
+
+        <com.google.android.material.card.MaterialCardView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            app:cardElevation="4dp"
+            app:cardCornerRadius="16dp"
+            android:layout_marginBottom="16dp">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                android:padding="16dp">
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="📍 Lokasi  &amp; Waktu"
+                    android:textSize="16sp"
+                    android:textStyle="bold"
+                    android:layout_marginBottom="8dp"/>
+
+                <TextView
+                    android:id="@+id/tvTimestamp"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="⏰ -"
+                    android:textSize="14sp"
+                    android:layout_marginBottom="4dp"/>
+
+                <TextView
+                    android:id="@+id/tvKoordinat"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="🌍 -"
+                    android:textSize="14sp"
+                    android:layout_marginBottom="4dp"/>
+
+                <TextView
+                    android:id="@+id/tvAlamat"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="📮 -"
+                    android:textSize="14sp"
+                    android:layout_marginBottom="8dp"/>
+
+                <TextView
+                    android:id="@+id/tvStatusValidasi"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="✅ Dalam Radius Kampus"
+                    android:textSize="14sp"
+                    android:textStyle="bold"
+                    android:textColor="#4CAF50"/>
+
+            </LinearLayout>
+        </com.google.android.material.card.MaterialCardView>
+
+        <Button
+            android:id="@+id/btnSubmitAbsensi"
+            android:layout_width="match_parent"
+            android:layout_height="60dp"
+            android:text="✅ Submit Absensi"
+            android:textSize="16sp"
+            android:layout_marginTop="8dp"/>
+
+        <Button
+            android:id="@+id/btnKembali"
+            android:layout_width="match_parent"
+            android:layout_height="60dp"
+            android:text="🔄 Ambil Ulang Foto"
+            android:textSize="16sp"
+            android:layout_marginTop="8dp"
+            style="@style/Widget.Material3.Button.OutlinedButton"/>
+
+        <ProgressBar
+            android:id="@+id/progressBar"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:layout_marginTop="16dp"
+            android:visibility="gone"/>
+
+    </LinearLayout>
+</ScrollView>

app/src/main/res/layout/fragment_profile.xml

@@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="24dp"
+    android:gravity="center">
+
+    <com.google.android.material.card.MaterialCardView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        app:cardElevation="4dp"
+        app:cardCornerRadius="16dp">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            android:padding="24dp">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="Profil Mahasiswa"
+                android:textSize="24sp"
+                android:textStyle="bold"
+                android:layout_gravity="center"
+                android:layout_marginBottom="24dp"/>
+
+            <com.google.android.material.textfield.TextInputLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:hint="Nama Lengkap"
+                style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox">
+
+                <com.google.android.material.textfield.TextInputEditText
+                    android:id="@+id/etNama"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:inputType="textPersonName"/>
+            </com.google.android.material.textfield.TextInputLayout>
+
+            <com.google.android.material.textfield.TextInputLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:hint="NPM"
+                android:layout_marginTop="16dp"
+                style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox">
+
+                <com.google.android.material.textfield.TextInputEditText
+                    android:id="@+id/etNpm"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:inputType="number"/>
+            </com.google.android.material.textfield.TextInputLayout>
+
+            <Button
+                android:id="@+id/btnSimpanProfile"
+                android:layout_width="match_parent"
+                android:layout_height="60dp"
+                android:text="Simpan Profile"
+                android:textSize="16sp"
+                android:layout_marginTop="24dp"/>
+
+            <TextView
+                android:id="@+id/tvProfileInfo"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:layout_gravity="center"
+                android:textAlignment="center"
+                android:visibility="gone"/>
+
+        </LinearLayout>
+    </com.google.android.material.card.MaterialCardView>
+
+</LinearLayout>

app/src/main/res/layout/item_history.xml

@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="utf-8"?>
+<com.google.android.material.card.MaterialCardView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_margin="8dp"
+    app:cardElevation="4dp"
+    app:cardCornerRadius="12dp">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:padding="16dp">
+
+        <ImageView
+            android:id="@+id/ivThumbnail"
+            android:layout_width="80dp"
+            android:layout_height="80dp"
+            android:scaleType="centerCrop"
+            android:background="@android:color/darker_gray"/>
+
+        <LinearLayout
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:orientation="vertical"
+            android:layout_marginStart="16dp">
+
+            <TextView
+                android:id="@+id/tvHistoryNama"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="Nama"
+                android:textSize="16sp"
+                android:textStyle="bold"/>
+
+            <TextView
+                android:id="@+id/tvHistoryTanggal"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="Tanggal"
+                android:textSize="14sp"
+                android:layout_marginTop="4dp"/>
+
+            <TextView
+                android:id="@+id/tvHistoryLokasi"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="Lokasi"
+                android:textSize="12sp"
+                android:layout_marginTop="4dp"/>
+
+        </LinearLayout>
+
+    </LinearLayout>
+
+</com.google.android.material.card.MaterialCardView>

app/src/main/res/menu/bottom_nav_menu.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <item
+        android:id="@+id/profileFragment"
+        android:title="Profil"
+        android:icon="@android:drawable/ic_menu_myplaces" />
+    <item
+        android:id="@+id/absensiFragment"
+        android:title="Absensi"
+        android:icon="@android:drawable/ic_menu_camera" />
+    <item
+        android:id="@+id/historyFragment"
+        android:title="Riwayat"
+        android:icon="@android:drawable/ic_menu_recent_history" />
+</menu>

app/src/main/res/navigation/nav_graph.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<navigation xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/nav_graph"
+    app:startDestination="@id/profileFragment">
+
+    <fragment
+        android:id="@+id/profileFragment"
+        android:name="id.ac.ubharajaya.sistemakademik.ui.fragments.ProfileFragment"
+        android:label="Profil" />
+
+    <fragment
+        android:id="@+id/absensiFragment"
+        android:name="id.ac.ubharajaya.sistemakademik.ui.fragments.AbsensiFragment"
+        android:label="Absensi">
+        <action
+            android:id="@+id/action_absensi_to_preview"
+            app:destination="@id/previewFragment" />
+    </fragment>
+
+    <fragment
+        android:id="@+id/previewFragment"
+        android:name="id.ac.ubharajaya.sistemakademik.ui.fragments.PreviewFragment"
+        android:label="Preview" />
+
+    <fragment
+        android:id="@+id/historyFragment"
+        android:name="id.ac.ubharajaya.sistemakademik.ui.fragments.HistoryFragment"
+        android:label="Riwayat" />
+
+</navigation>

app/src/main/res/values-night/themes.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <style name="Theme.SistemAkademik"
+        parent="Theme.MaterialComponents.DayNight.NoActionBar">
+
+        <item name="textAppearanceBody1">
+            @style/TextAppearance.MaterialComponents.Body1
+        </item>
+        <item name="textAppearanceBody2">
+            @style/TextAppearance.MaterialComponents.Body2
+        </item>
+        <item name="textAppearanceButton">
+            @style/TextAppearance.MaterialComponents.Button
+        </item>
+
+    </style>
+
+</resources>

app/src/main/res/values/themes.xml

@@ -1,5 +1,20 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
 
-    <style name="Theme.SistemAkademik" parent="android:Theme.Material.Light.NoActionBar" />
+    <style name="Theme.SistemAkademik"
+        parent="Theme.MaterialComponents.DayNight.NoActionBar">
+
+        <!-- WAJIB buat TextInputLayout -->
+        <item name="textAppearanceBody1">
+            @style/TextAppearance.MaterialComponents.Body1
+        </item>
+        <item name="textAppearanceBody2">
+            @style/TextAppearance.MaterialComponents.Body2
+        </item>
+        <item name="textAppearanceButton">
+            @style/TextAppearance.MaterialComponents.Button
+        </item>
+
+    </style>
+
 </resources>

n8n-workflow-EAS.json

@@ -0,0 +1,225 @@
+{
+  "name": "EAS",
+  "nodes": [
+    {
+      "parameters": {
+        "method": "POST",
+        "url": "https://ntfy.ubharajaya.ac.id/EAS",
+        "sendBody": true,
+        "contentType": "raw",
+        "body": "=Absensi: {{ $json.body.nama }} NPM: {{ $json.body.npm }}",
+        "options": {}
+      },
+      "type": "n8n-nodes-base.httpRequest",
+      "typeVersion": 4.3,
+      "position": [
+        -272,
+        -240
+      ],
+      "id": "83504eec-6d20-46d7-9ea1-509ae4ee8660",
+      "name": "NTFY HTTP Request"
+    },
+    {
+      "parameters": {
+        "httpMethod": "POST",
+        "path": "23c6993d-1792-48fb-ad1c-ffc78a3e6254",
+        "options": {}
+      },
+      "type": "n8n-nodes-base.webhook",
+      "typeVersion": 2.1,
+      "position": [
+        -864,
+        -112
+      ],
+      "id": "9ed3d2db-2d50-40b5-8408-7404edd48442",
+      "name": "Webhook Absensi",
+      "webhookId": "23c6993d-1792-48fb-ad1c-ffc78a3e6254"
+    },
+    {
+      "parameters": {
+        "operation": "append",
+        "documentId": {
+          "__rl": true,
+          "value": "1jH15MfnNgpPGuGeid0hYfY7fFUHCEFbCmg8afTyyLZs",
+          "mode": "id"
+        },
+        "sheetName": {
+          "__rl": true,
+          "value": "Absensi",
+          "mode": "name"
+        },
+        "columns": {
+          "mappingMode": "defineBelow",
+          "value": {
+            "latitude": "={{ $json.body.latitude }}",
+            "longitude": "={{ $json.body.longitude }}",
+            "timestamp": "={{ $json.body.timestamp }}",
+            "foto_base64": "={{ $json.body.foto_base64 }}",
+            "nama": "={{ $json.body.nama }}",
+            "npm": "={{ $json.body.npm }}"
+          },
+          "matchingColumns": [],
+          "schema": [
+            {
+              "id": "timestamp",
+              "displayName": "timestamp",
+              "required": false,
+              "defaultMatch": false,
+              "display": true,
+              "type": "string",
+              "canBeUsedToMatch": true,
+              "removed": false
+            },
+            {
+              "id": "npm",
+              "displayName": "npm",
+              "required": false,
+              "defaultMatch": false,
+              "display": true,
+              "type": "string",
+              "canBeUsedToMatch": true,
+              "removed": false
+            },
+            {
+              "id": "nama",
+              "displayName": "nama",
+              "required": false,
+              "defaultMatch": false,
+              "display": true,
+              "type": "string",
+              "canBeUsedToMatch": true,
+              "removed": false
+            },
+            {
+              "id": "latitude",
+              "displayName": "latitude",
+              "required": false,
+              "defaultMatch": false,
+              "display": true,
+              "type": "string",
+              "canBeUsedToMatch": true,
+              "removed": false
+            },
+            {
+              "id": "longitude",
+              "displayName": "longitude",
+              "required": false,
+              "defaultMatch": false,
+              "display": true,
+              "type": "string",
+              "canBeUsedToMatch": true,
+              "removed": false
+            },
+            {
+              "id": "photo",
+              "displayName": "photo",
+              "required": false,
+              "defaultMatch": false,
+              "display": true,
+              "type": "string",
+              "canBeUsedToMatch": true,
+              "removed": false
+            },
+            {
+              "id": "status",
+              "displayName": "status",
+              "required": false,
+              "defaultMatch": false,
+              "display": true,
+              "type": "string",
+              "canBeUsedToMatch": true,
+              "removed": false
+            },
+            {
+              "id": "foto_base64",
+              "displayName": "foto_base64",
+              "required": false,
+              "defaultMatch": false,
+              "display": true,
+              "type": "string",
+              "canBeUsedToMatch": true,
+              "removed": false
+            }
+          ],
+          "attemptToConvertTypes": false,
+          "convertFieldsToString": false
+        },
+        "options": {}
+      },
+      "type": "n8n-nodes-base.googleSheets",
+      "typeVersion": 4.7,
+      "position": [
+        -272,
+        -32
+      ],
+      "id": "cd83a9fa-ea00-4a20-aa31-846bfe044aeb",
+      "name": "Append row in sheet",
+      "credentials": {
+        "googleSheetsOAuth2Api": {
+          "id": "hNVNhkTQbqkJ3C56",
+          "name": "Google Sheets account"
+        }
+      }
+    },
+    {
+      "parameters": {
+        "jsCode": "// Loop over input items and add a new field called 'myNewField' to the JSON of each one\nfor (const item of $input.all()) {\n  item.json.myNewField = 1;\n}\n\nreturn $input.all();"
+      },
+      "type": "n8n-nodes-base.code",
+      "typeVersion": 2,
+      "position": [
+        -528,
+        -240
+      ],
+      "id": "4ed9edf6-4562-41b6-afd0-89c96991454a",
+      "name": "Code in JavaScript"
+    }
+  ],
+  "pinData": {},
+  "connections": {
+    "Webhook Absensi": {
+      "main": [
+        [
+          {
+            "node": "Append row in sheet",
+            "type": "main",
+            "index": 0
+          },
+          {
+            "node": "Code in JavaScript",
+            "type": "main",
+            "index": 0
+          }
+        ]
+      ]
+    },
+    "NTFY HTTP Request": {
+      "main": [
+        []
+      ]
+    },
+    "Code in JavaScript": {
+      "main": [
+        [
+          {
+            "node": "NTFY HTTP Request",
+            "type": "main",
+            "index": 0
+          }
+        ]
+      ]
+    }
+  },
+  "active": true,
+  "settings": {
+    "executionOrder": "v1",
+    "availableInMCP": false
+  },
+  "versionId": "49466b31-67ce-49b7-af37-33cd28d7092d",
+  "meta": {
+    "templateCredsSetupCompleted": true,
+    "instanceId": "b8ffac81bb85d267c3296e074b3e692ecef11caeef79fa72af892085548f350a"
+  },
+  "id": "E_gxZpNrN3G5ibejHcTFS",
+  "tags": []
+}