pertama

README.md

@@ -1,10 +1,68 @@
-Kalkulator BMI
+# 📱 Aplikasi Kalkulator BMI
-===============
 
-Silahkan kembangkan aplikasi ini untuk melakukan perhitungan BMI
+**Dibuat oleh:**  
+👨‍💻 **Rafi Fattan Fitriardi**  
+🆔 **NIM: 202310715002**  
+🏫 **Pemrograman Perangkat Bergerak - F5A5**
 
-Petunjuk lebih detil dapat dibaca di
+---
-https://docs.google.com/document/d/1iGiC0Bg3Bdcd2Maq45TYkCDUkZ5Ql51E/edit?rtpof=true
+
+## 📖 Deskripsi Aplikasi
+Aplikasi **Kalkulator BMI (Body Mass Index)** ini dibuat sebagai proyek akhir mata kuliah **Pemrograman Perangkat Bergerak**.  
+Tujuan utama aplikasi ini adalah membantu pengguna menghitung **Indeks Massa Tubuh (BMI)** berdasarkan **berat badan (kg)** dan **tinggi badan (cm)** untuk mengetahui apakah berat badan tergolong **kurang, ideal, berlebih, atau obesitas**.
+
+Aplikasi ini memiliki **dua halaman utama**:
+1. **Halaman Biodata Pengembang** – menampilkan informasi pembuat aplikasi (nama, NIM, kelas, dan foto), serta tombol **“MULAI”** untuk berpindah ke laman utama.
+2. **Halaman Utama (Kalkulator BMI)** – tempat pengguna menginput berat dan tinggi badan, menekan tombol **“Hitung BMI”**, lalu melihat hasil nilai BMI beserta kategori dan saran kesehatannya.
+
+---
+
+## ⚙️ Fitur Utama
+- Input berat dan tinggi badan secara interaktif.  
+- Perhitungan otomatis nilai BMI.  
+- Tampilan kategori hasil (Kurus, Normal, Gemuk, Obesitas).  
+- Antarmuka sederhana dan responsif.  
+- Navigasi antarhalaman menggunakan tombol **MULAI** dari halaman biodata.
+
+---
+
+## 🧩 Teknologi yang Digunakan
+- **Android Studio (Kotlin)**  
+- **XML Layouts** untuk desain antarmuka  
+- **Intent** untuk navigasi antar activity  
+- **Drawable XML** untuk gradasi dan tema warna aplikasi  
+
+---
+
+## 💡 Struktur Proyek
+```
+app/
+ ├── java/com/example/bmiapp/
+ │    ├── SplashActivity.kt        // Halaman biodata pengembang
+ │    ├── MainActivity.kt          // Halaman utama kalkulator BMI
+ │
+ ├── res/
+ │    ├── layout/
+ │    │    ├── activity_splash.xml
+ │    │    ├── activity_main.xml
+ │    ├── drawable/
+ │    │    ├── splash_gradient.xml
+ │    ├── mipmap/
+ │    │    ├── ic_launcher.png     // Ikon aplikasi
+ │    │    ├── ic_launcher_round.png
+ │    ├── values/
+ │         ├── colors.xml
+ │         ├── strings.xml
+ │         ├── themes.xml
+ │
+ └── AndroidManifest.xml
+```
+
+---
+
+## 🧠 Kontribusi & Kredit
+Aplikasi ini dikembangkan dengan bantuan **ChatGPT (OpenAI)** dalam pembuatan kode, desain antarmuka, dan penyusunan dokumentasi.  
+Semua logika, pengujian, dan penyempurnaan dilakukan secara mandiri oleh pengembang.
+
+---
 
-Starter dimodifikasi dan terinspirasi dari:
-https://developer.android.com/codelabs/basic-android-compose-calculate-tip#0

app/build.gradle.kts

@@ -73,7 +73,7 @@ dependencies {
     implementation("androidx.compose.ui:ui-tooling-preview")
     implementation("androidx.core:core-ktx:1.15.0")
     implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.8.7")
-
+    implementation("androidx.appcompat:appcompat:1.7.1")
     testImplementation("junit:junit:4.13.2")
 
     androidTestImplementation(platform("androidx.compose:compose-bom:2024.12.01"))

app/src/main/AndroidManifest.xml

@@ -26,15 +26,24 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.TipTime"
         tools:targetApi="33">
+
+        <!-- Laman utama (Kalkulator BMI) -->
         <activity
             android:name=".MainActivity"
+            android:exported="false"
+            android:theme="@style/Theme.TipTime" />
+
+        <!-- Laman biodata pengembang (Splash / Intro Screen) -->
+        <activity
+            android:name=".SplashActivity"
             android:exported="true"
-            android:theme="@style/Theme.TipTime">
+            android:theme="@style/Theme.AppCompat.Light.NoActionBar">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+
     </application>
 
 </manifest>

app/src/main/java/com/example/tiptime/MainActivity.kt

@@ -1,18 +1,3 @@
-/*
- * Copyright (C) 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
 package com.example.tiptime
 
 import android.os.Bundle
@@ -21,31 +6,12 @@ import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
 import androidx.annotation.DrawableRes
 import androidx.annotation.StringRes
-import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.*
-import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.Row
-import androidx.compose.foundation.layout.Spacer
-import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.height
-import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.layout.safeDrawingPadding
-import androidx.compose.foundation.layout.statusBarsPadding
-import androidx.compose.foundation.layout.wrapContentWidth
 import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.foundation.verticalScroll
-import androidx.compose.material3.Icon
+import androidx.compose.material3.*
-import androidx.compose.material3.MaterialTheme
+import androidx.compose.runtime.*
-import androidx.compose.material3.Surface
-import androidx.compose.material3.Switch
-import androidx.compose.material3.Text
-import androidx.compose.material3.TextField
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
-import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.painterResource
@@ -55,7 +21,10 @@ import androidx.compose.ui.text.input.KeyboardType
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import com.example.tiptime.ui.theme.TipTimeTheme
-import java.text.NumberFormat
+import kotlin.math.pow
+import kotlin.math.roundToInt
+import androidx.compose.foundation.background
+import androidx.compose.ui.graphics.Brush
 
 class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -63,10 +32,8 @@ class MainActivity : ComponentActivity() {
         super.onCreate(savedInstanceState)
         setContent {
             TipTimeTheme {
-                Surface(
+                Surface(modifier = Modifier.fillMaxSize()) {
-                    modifier = Modifier.fillMaxSize(),
+                    BmiCalculatorLayout()
-                ) {
-                    TipTimeLayout()
                 }
             }
         }
@@ -74,71 +41,162 @@ class MainActivity : ComponentActivity() {
 }
 
 @Composable
-fun TipTimeLayout() {
+fun BmiCalculatorLayout() {
-    var amountInput by remember { mutableStateOf("") }
+    var heightInput by remember { mutableStateOf("") }
-    var tipInput by remember { mutableStateOf("") }
+    var weightInput by remember { mutableStateOf("") }
-    var roundUp by remember { mutableStateOf(false) }
+    var errorMessage by remember { mutableStateOf("") }
 
-    val BmiHeight = amountInput.toDoubleOrNull() ?: 0.0
+    // State untuk hasil BMI
-    val BmiWeight = tipInput.toDoubleOrNull() ?: 0.0
+    var bmiResult by remember { mutableStateOf<Float?>(null) }
-    val bmi = calculateBMI(BmiHeight, BmiWeight, roundUp)
+    var bmiCategory by remember { mutableStateOf("") }
-    val category = calculateBMICategory(BmiHeight, BmiWeight, roundUp)
 
-    Column(
+    val height = heightInput.toFloatOrNull() ?: 0f
+    val weight = weightInput.toFloatOrNull() ?: 0f
+    val isValid = validateInput(height, weight)
+
+    Box(
         modifier = Modifier
-            .statusBarsPadding()
+            .fillMaxSize()
-            .padding(horizontal = 40.dp)
+            .background(
-            .verticalScroll(rememberScrollState())
+                Brush.verticalGradient(
-            .safeDrawingPadding(),
+                    colors = listOf(
-        horizontalAlignment = Alignment.CenterHorizontally,
+                        MaterialTheme.colorScheme.primary.copy(alpha = 0.4f),
-        verticalArrangement = Arrangement.Center
+                        MaterialTheme.colorScheme.secondary.copy(alpha = 0.2f)
-    ) {
-        Text(
-            text = stringResource(R.string.calculate_tip),
-            modifier = Modifier
-                .padding(bottom = 16.dp, top = 40.dp)
-                .align(alignment = Alignment.Start)
                     )
+                )
+            )
+            .verticalScroll(rememberScrollState())
+            .padding(horizontal = 24.dp, vertical = 32.dp)
+    ) {
+        Column(horizontalAlignment = Alignment.CenterHorizontally) {
+
+            Row(verticalAlignment = Alignment.CenterVertically) {
+                Icon(
+                    painter = painterResource(id = R.drawable.ic_launcher_foreground),
+                    contentDescription = null,
+                    tint = MaterialTheme.colorScheme.primary,
+                    modifier = Modifier.size(48.dp)
+                )
+                Spacer(modifier = Modifier.width(8.dp))
+                Text(
+                    text = "Kalkulator BMI",
+                    style = MaterialTheme.typography.headlineMedium.copy(
+                        color = MaterialTheme.colorScheme.primary
+                    )
+                )
+            }
+
+            Spacer(modifier = Modifier.height(24.dp))
+
+            Card(
+                elevation = CardDefaults.cardElevation(defaultElevation = 8.dp),
+                colors = CardDefaults.cardColors(
+                    containerColor = MaterialTheme.colorScheme.surface.copy(alpha = 0.9f)
+                ),
+                modifier = Modifier.fillMaxWidth()
+            ) {
+                Column(
+                    modifier = Modifier.padding(16.dp),
+                    horizontalAlignment = Alignment.CenterHorizontally
+                ) {
                     EditNumberField(
                         label = R.string.height,
                         leadingIcon = R.drawable.number,
-            keyboardOptions = KeyboardOptions.Default.copy(
+                        keyboardOptions = KeyboardOptions(
                             keyboardType = KeyboardType.Number,
                             imeAction = ImeAction.Next
                         ),
-            value = amountInput,
+                        value = heightInput,
-            onValueChanged = { amountInput = it },
+                        onValueChanged = { heightInput = it },
-            modifier = Modifier.padding(bottom = 32.dp).fillMaxWidth(),
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .padding(bottom = 12.dp)
                     )
+
                     EditNumberField(
                         label = R.string.weight,
                         leadingIcon = R.drawable.number,
-            keyboardOptions = KeyboardOptions.Default.copy(
+                        keyboardOptions = KeyboardOptions(
                             keyboardType = KeyboardType.Number,
                             imeAction = ImeAction.Done
                         ),
-            value = tipInput,
+                        value = weightInput,
-            onValueChanged = { tipInput = it },
+                        onValueChanged = { weightInput = it },
-            modifier = Modifier.padding(bottom = 32.dp).fillMaxWidth(),
+                        modifier = Modifier.fillMaxWidth()
-        )
-        RoundTheTipRow(
-            roundUp = roundUp,
-            onRoundUpChanged = { roundUp = it },
-            modifier = Modifier.padding(bottom = 32.dp)
-        )
-        Text(
-            text = stringResource(R.string.bmi_calculation, bmi),
-            style = MaterialTheme.typography.displaySmall
-        )
-        Text(
-            text = stringResource(R.string.bmi_category, category),
-            style = MaterialTheme.typography.displaySmall
                     )
+                }
+            }
 
-        Spacer(modifier = Modifier.height(150.dp))
+            Spacer(modifier = Modifier.height(24.dp))
+
+            Button(
+                onClick = {
+                    if (!isValid) {
+                        errorMessage = "Masukkan tinggi (20–250 cm) dan berat (10–250 kg) yang valid!"
+                        bmiResult = null
+                    } else {
+                        errorMessage = ""
+                        bmiResult = calculateBMI(weight, height)
+                        bmiCategory = getBMICategory(bmiResult!!)
+                    }
+                },
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .height(56.dp),
+                elevation = ButtonDefaults.elevatedButtonElevation(8.dp)
+            ) {
+                Text(text = "Hitung BMI", style = MaterialTheme.typography.titleMedium)
+            }
+
+            if (errorMessage.isNotEmpty()) {
+                Text(
+                    text = errorMessage,
+                    color = MaterialTheme.colorScheme.error,
+                    style = MaterialTheme.typography.bodyMedium,
+                    modifier = Modifier.padding(vertical = 8.dp)
+                )
+            }
+
+            // Tampilkan hasil hanya jika sudah ditekan
+            bmiResult?.let { bmi ->
+                val categoryColor = when (bmiCategory) {
+                    "Kurus" -> MaterialTheme.colorScheme.tertiaryContainer
+                    "Normal" -> MaterialTheme.colorScheme.primaryContainer
+                    "Kelebihan Berat" -> MaterialTheme.colorScheme.secondaryContainer
+                    else -> MaterialTheme.colorScheme.errorContainer
+                }
+
+                Card(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(top = 24.dp),
+                    colors = CardDefaults.cardColors(containerColor = categoryColor),
+                    elevation = CardDefaults.cardElevation(defaultElevation = 10.dp)
+                ) {
+                    Column(
+                        horizontalAlignment = Alignment.CenterHorizontally,
+                        modifier = Modifier.padding(20.dp)
+                    ) {
+                        Text(
+                            text = "BMI Anda: %.2f".format(bmi),
+                            style = MaterialTheme.typography.titleLarge
+                        )
+                        Text(
+                            text = "Kategori: $bmiCategory",
+                            style = MaterialTheme.typography.bodyLarge
+                        )
+                    }
+                }
+            }
+        }
     }
 }
 
+
+
+/**
+ * Fungsi untuk membuat TextField input angka
+ */
 @Composable
 fun EditNumberField(
     @StringRes label: Int,
@@ -150,65 +208,47 @@ fun EditNumberField(
 ) {
     TextField(
         value = value,
-        singleLine = true,
-        leadingIcon = { Icon(painter = painterResource(id = leadingIcon), null) },
-        modifier = modifier,
         onValueChange = onValueChanged,
+        singleLine = true,
+        leadingIcon = { Icon(painter = painterResource(id = leadingIcon), contentDescription = null) },
         label = { Text(stringResource(label)) },
-        keyboardOptions = keyboardOptions
+        keyboardOptions = keyboardOptions,
+        modifier = modifier
     )
 }
 
-@Composable
+/**
-fun RoundTheTipRow(
+ * Menghitung nilai BMI berdasarkan berat (kg) dan tinggi (cm)
-    roundUp: Boolean,
+ * Rumus: BMI = berat / (tinggi/100)^2
-    onRoundUpChanged: (Boolean) -> Unit,
+ */
-    modifier: Modifier = Modifier
+fun calculateBMI(weight: Float, height: Float): Float {
-) {
+    if (height <= 0) return 0f
-    Row(
+    return weight / (height / 100).pow(2)
-        modifier = modifier.fillMaxWidth(),
+}
-        verticalAlignment = Alignment.CenterVertically
+
-    ) {
+/**
-        Text(text = stringResource(R.string.use_usc))
+ * Menentukan kategori BMI
-        Switch(
+ */
-            modifier = Modifier
+fun getBMICategory(bmi: Float): String {
-                .fillMaxWidth()
+    return when {
-                .wrapContentWidth(Alignment.End),
+        bmi < 18.5 -> "Kurus"
-            checked = roundUp,
+        bmi < 25 -> "Normal"
-            onCheckedChange = onRoundUpChanged
+        bmi < 30 -> "Kelebihan Berat"
-        )
+        else -> "Obesitas"
     }
 }
 
 /**
- * Calculates the BMI
+ * Validasi input agar nilai masuk akal
- *
- * Catatan: tambahkan unit test untuk kalkulasi BMI ini
  */
-private fun calculateBMI(BmiHeight: Double, BmiWeight: Double = 15.0, roundUp: Boolean): String {
+fun validateInput(height: Float, weight: Float): Boolean {
-    var bmi = BmiWeight / 100 * BmiHeight
+    return height in 20f..250f && weight in 10f..250f
-    if (roundUp) {
-        bmi = kotlin.math.ceil(bmi)
-    }
-    return NumberFormat.getNumberInstance().format(bmi)
 }
-/**
- * Calculates the BMI Category
- *
- * Catatan: tambahkan unit test untuk kalkulasi BMI ini
- */
 
-private fun calculateBMICategory(BmiHeight: Double, BmiWeight: Double = 15.0, roundUp: Boolean): String {
-    var bmi = BmiWeight / 100 * BmiHeight
-    if (roundUp) {
-        bmi = kotlin.math.ceil(bmi)
-    }
-    return NumberFormat.getNumberInstance().format(bmi)
-}
 @Preview(showBackground = true)
 @Composable
-fun TipTimeLayoutPreview() {
+fun BmiCalculatorPreview() {
     TipTimeTheme {
-        TipTimeLayout()
+        BmiCalculatorLayout()
     }
 }

app/src/main/java/com/example/tiptime/SplashActivity.kt

@@ -0,0 +1,21 @@
+package com.example.tiptime
+
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.widget.Button
+
+class SplashActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_splash)
+
+        val btnMulai = findViewById<Button>(R.id.btnMulai)
+
+        btnMulai.setOnClickListener {
+            val intent = Intent(this, MainActivity::class.java)
+            startActivity(intent)
+            //finish() // supaya tidak bisa kembali ke splash dengan tombol back
+        }
+    }
+}

app/src/main/res/drawable/bg_gradient.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- Lapisan gradasi -->
+    <item>
+        <shape android:shape="rectangle">
+            <gradient
+                android:startColor="#6A11CB"
+                android:endColor="#2575FC"
+                android:angle="45" />
+        </shape>
+    </item>
+
+    <!-- Lapisan overlay transparan -->
+    <item>
+        <shape android:shape="rectangle">
+            <solid android:color="#40FFFFFF" />
+        </shape>
+    </item>
+</layer-list>

app/src/main/res/drawable/ic_launcher_background.xml

@@ -1,185 +1,74 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!--
+<vector
-  ~ Copyright (C) 2023 The Android Open Source Project
-  ~
-  ~ Licensed under the Apache License, Version 2.0 (the "License");
-  ~ you may not use this file except in compliance with the License.
-  ~ You may obtain a copy of the License at
-  ~
-  ~      https://www.apache.org/licenses/LICENSE-2.0
-  ~
-  ~ Unless required by applicable law or agreed to in writing, software
-  ~ distributed under the License is distributed on an "AS IS" BASIS,
-  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  ~ See the License for the specific language governing permissions and
-  ~ limitations under the License.
-  -->
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="108dp"
     android:height="108dp"
+    android:width="108dp"
+    android:viewportHeight="108"
     android:viewportWidth="108"
-    android:viewportHeight="108">
+    xmlns:android="http://schemas.android.com/apk/res/android">
-    <path
+    <path android:fillColor="#3DDC84"
-        android:fillColor="#3DDC84"
+          android:pathData="M0,0h108v108h-108z"/>
-        android:pathData="M0,0h108v108h-108z" />
+    <path android:fillColor="#00000000" android:pathData="M9,0L9,108"
-    <path
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:fillColor="#00000000"
+    <path android:fillColor="#00000000" android:pathData="M19,0L19,108"
-        android:pathData="M9,0L9,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:strokeWidth="0.8"
+    <path android:fillColor="#00000000" android:pathData="M29,0L29,108"
-        android:strokeColor="#33FFFFFF" />
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path
+    <path android:fillColor="#00000000" android:pathData="M39,0L39,108"
-        android:fillColor="#00000000"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:pathData="M19,0L19,108"
+    <path android:fillColor="#00000000" android:pathData="M49,0L49,108"
-        android:strokeWidth="0.8"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:strokeColor="#33FFFFFF" />
+    <path android:fillColor="#00000000" android:pathData="M59,0L59,108"
-    <path
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:fillColor="#00000000"
+    <path android:fillColor="#00000000" android:pathData="M69,0L69,108"
-        android:pathData="M29,0L29,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:strokeWidth="0.8"
+    <path android:fillColor="#00000000" android:pathData="M79,0L79,108"
-        android:strokeColor="#33FFFFFF" />
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path
+    <path android:fillColor="#00000000" android:pathData="M89,0L89,108"
-        android:fillColor="#00000000"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:pathData="M39,0L39,108"
+    <path android:fillColor="#00000000" android:pathData="M99,0L99,108"
-        android:strokeWidth="0.8"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:strokeColor="#33FFFFFF" />
+    <path android:fillColor="#00000000" android:pathData="M0,9L108,9"
-    <path
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:fillColor="#00000000"
+    <path android:fillColor="#00000000" android:pathData="M0,19L108,19"
-        android:pathData="M49,0L49,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:strokeWidth="0.8"
+    <path android:fillColor="#00000000" android:pathData="M0,29L108,29"
-        android:strokeColor="#33FFFFFF" />
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path
+    <path android:fillColor="#00000000" android:pathData="M0,39L108,39"
-        android:fillColor="#00000000"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:pathData="M59,0L59,108"
+    <path android:fillColor="#00000000" android:pathData="M0,49L108,49"
-        android:strokeWidth="0.8"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:strokeColor="#33FFFFFF" />
+    <path android:fillColor="#00000000" android:pathData="M0,59L108,59"
-    <path
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:fillColor="#00000000"
+    <path android:fillColor="#00000000" android:pathData="M0,69L108,69"
-        android:pathData="M69,0L69,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:strokeWidth="0.8"
+    <path android:fillColor="#00000000" android:pathData="M0,79L108,79"
-        android:strokeColor="#33FFFFFF" />
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path
+    <path android:fillColor="#00000000" android:pathData="M0,89L108,89"
-        android:fillColor="#00000000"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:pathData="M79,0L79,108"
+    <path android:fillColor="#00000000" android:pathData="M0,99L108,99"
-        android:strokeWidth="0.8"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:strokeColor="#33FFFFFF" />
+    <path android:fillColor="#00000000" android:pathData="M19,29L89,29"
-    <path
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:fillColor="#00000000"
+    <path android:fillColor="#00000000" android:pathData="M19,39L89,39"
-        android:pathData="M89,0L89,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:strokeWidth="0.8"
+    <path android:fillColor="#00000000" android:pathData="M19,49L89,49"
-        android:strokeColor="#33FFFFFF" />
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path
+    <path android:fillColor="#00000000" android:pathData="M19,59L89,59"
-        android:fillColor="#00000000"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:pathData="M99,0L99,108"
+    <path android:fillColor="#00000000" android:pathData="M19,69L89,69"
-        android:strokeWidth="0.8"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:strokeColor="#33FFFFFF" />
+    <path android:fillColor="#00000000" android:pathData="M19,79L89,79"
-    <path
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:fillColor="#00000000"
+    <path android:fillColor="#00000000" android:pathData="M29,19L29,89"
-        android:pathData="M0,9L108,9"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:strokeWidth="0.8"
+    <path android:fillColor="#00000000" android:pathData="M39,19L39,89"
-        android:strokeColor="#33FFFFFF" />
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path
+    <path android:fillColor="#00000000" android:pathData="M49,19L49,89"
-        android:fillColor="#00000000"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:pathData="M0,19L108,19"
+    <path android:fillColor="#00000000" android:pathData="M59,19L59,89"
-        android:strokeWidth="0.8"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:strokeColor="#33FFFFFF" />
+    <path android:fillColor="#00000000" android:pathData="M69,19L69,89"
-    <path
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:fillColor="#00000000"
+    <path android:fillColor="#00000000" android:pathData="M79,19L79,89"
-        android:pathData="M0,29L108,29"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,39L108,39"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,49L108,49"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,59L108,59"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,69L108,69"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,79L108,79"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,89L108,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,99L108,99"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,29L89,29"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,39L89,39"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,49L89,49"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,59L89,59"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,69L89,69"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,79L89,79"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M29,19L29,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M39,19L39,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M49,19L49,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M59,19L59,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M69,19L69,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M79,19L79,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
 </vector>

app/src/main/res/drawable/profile_circle_mask.xml

@@ -0,0 +1,5 @@
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="oval">
+    <solid android:color="@android:color/transparent" />
+    <stroke android:width="2dp" android:color="@android:color/white" />
+</shape>

app/src/main/res/drawable/splash_gradient.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+
+    <gradient
+        android:type="linear"
+        android:angle="270"
+        android:startColor="#4A90E2"
+        android:centerColor="#6A5ACD"
+        android:endColor="#8A2BE2"
+        android:useLevel="false" />
+
+</shape>

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

@@ -0,0 +1,66 @@
+<?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:gravity="center"
+    android:orientation="vertical"
+    android:padding="24dp"
+    android:background="@drawable/splash_gradient">
+
+    <ImageView
+        android:layout_width="150dp"
+        android:layout_height="150dp"
+        android:src="@mipmap/ic_launcher_round"
+        android:contentDescription="Foto Profil"
+        android:layout_marginBottom="16dp" />
+
+    <TextView
+        android:id="@+id/tvName"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Rafi Fattan Fitriardi"
+        android:textStyle="bold"
+        android:textSize="20sp"
+        android:textColor="#FFFFFF"
+        android:shadowColor="#80000000"
+        android:shadowDx="1"
+        android:shadowDy="1"
+        android:shadowRadius="2"
+        android:layout_marginBottom="8dp" />
+
+    <TextView
+        android:id="@+id/tvNim"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="202310715002"
+        android:textSize="16sp"
+        android:textColor="#E0E0E0"
+        android:shadowColor="#80000000"
+        android:shadowDx="1"
+        android:shadowDy="1"
+        android:shadowRadius="2"
+        android:layout_marginBottom="8dp" />
+
+    <TextView
+        android:id="@+id/tvKampus"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Pemrograman Perangkat Bergerak - F5A5"
+        android:textSize="16sp"
+        android:textColor="#E0E0E0"
+        android:shadowColor="#80000000"
+        android:shadowDx="1"
+        android:shadowDy="1"
+        android:shadowRadius="2"
+        android:layout_marginBottom="24dp" />
+
+    <Button
+        android:id="@+id/btnMulai"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="MULAI"
+        android:backgroundTint="#4CAF50"
+        android:textColor="@android:color/white"
+        android:paddingHorizontal="32dp"
+        android:paddingVertical="12dp" />
+</LinearLayout>

app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -1,22 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!--
-  ~ Copyright (C) 2023 The Android Open Source Project
-  ~
-  ~ Licensed under the Apache License, Version 2.0 (the "License");
-  ~ you may not use this file except in compliance with the License.
-  ~ You may obtain a copy of the License at
-  ~
-  ~      https://www.apache.org/licenses/LICENSE-2.0
-  ~
-  ~ Unless required by applicable law or agreed to in writing, software
-  ~ distributed under the License is distributed on an "AS IS" BASIS,
-  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  ~ See the License for the specific language governing permissions and
-  ~ limitations under the License.
-  -->
-
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background" />
+    <background android:drawable="@drawable/ic_launcher_background"/>
-    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
-    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
 </adaptive-icon>

app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -1,22 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!--
-  ~ Copyright (C) 2023 The Android Open Source Project
-  ~
-  ~ Licensed under the Apache License, Version 2.0 (the "License");
-  ~ you may not use this file except in compliance with the License.
-  ~ You may obtain a copy of the License at
-  ~
-  ~      https://www.apache.org/licenses/LICENSE-2.0
-  ~
-  ~ Unless required by applicable law or agreed to in writing, software
-  ~ distributed under the License is distributed on an "AS IS" BASIS,
-  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  ~ See the License for the specific language governing permissions and
-  ~ limitations under the License.
-  -->
-
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background" />
+    <background android:drawable="@drawable/ic_launcher_background"/>
-    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
-    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
 </adaptive-icon>

app/src/test/java/com/example/tiptime/BmiUnitTest.kt

@@ -0,0 +1,63 @@
+package com.example.tiptime
+
+import org.junit.Assert.assertEquals
+import org.junit.Test
+
+/**
+ * Unit test untuk memastikan fungsi perhitungan dan kategori BMI
+ * berjalan dengan benar.
+ *
+ * Lokasi file: app/src/test/java/com/example/tiptime/BmiUnitTest.kt
+ */
+class BmiUnitTest {
+
+    @Test
+    fun calculateBMI_isAccurate() {
+        // Data: berat 70 kg, tinggi 170 cm
+        val result = calculateBMI(70f, 170f)
+        // Hasil ekspektasi ≈ 24.22
+        assertEquals(24.22f, result, 0.01f)
+    }
+
+    @Test
+    fun calculateBMI_zeroHeight_returnsZero() {
+        val result = calculateBMI(70f, 0f)
+        assertEquals(0f, result, 0.0f)
+    }
+
+    @Test
+    fun getBMICategory_underweight_returnsKurus() {
+        val category = getBMICategory(17.0f)
+        assertEquals("Kurus", category)
+    }
+
+    @Test
+    fun getBMICategory_normal_returnsNormal() {
+        val category = getBMICategory(22.5f)
+        assertEquals("Normal", category)
+    }
+
+    @Test
+    fun getBMICategory_overweight_returnsKelebihanBerat() {
+        val category = getBMICategory(27.5f)
+        assertEquals("Kelebihan Berat", category)
+    }
+
+    @Test
+    fun getBMICategory_obese_returnsObesitas() {
+        val category = getBMICategory(31.0f)
+        assertEquals("Obesitas", category)
+    }
+
+    @Test
+    fun validateInput_validValues_returnsTrue() {
+        val isValid = validateInput(170f, 65f)
+        assertEquals(true, isValid)
+    }
+
+    @Test
+    fun validateInput_invalidValues_returnsFalse() {
+        val isValid = validateInput(5f, 500f)
+        assertEquals(false, isValid)
+    }
+}