Update:

- Logo
- Logo Male, Female
- Sedikit Perubahan UI/UX

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

@@ -0,0 +1,72 @@
+package com.example.tiptime
+
+import kotlin.math.pow
+
+// File ini berisi semua logika bisnis dan kalkulasi untuk aplikasi BMI.
+
+/**
+ * Data class untuk menampung semua hasil kalkulasi BMI.
+ */
+data class BmiFullResult(
+    val bmi: Double,
+    val category: String,
+    val healthyBmiRange: String = "18.5 - 25.0",
+    val healthyWeightRange: String,
+    val bmiPrime: Double,
+    val ponderalIndex: Double
+)
+
+/**
+ * Menghitung semua nilai terkait BMI berdasarkan berat, tinggi, dan sistem unit.
+ * @param weight Berat badan pengguna (dalam kg atau lbs).
+ * @param height Tinggi badan pengguna (dalam cm atau in).
+ * @param useMetric `true` jika menggunakan sistem Metrik, `false` jika USC.
+ * @return `BmiFullResult` jika input valid, atau `null` jika tidak.
+ */
+fun calculateBmi(weight: Double, height: Double, useMetric: Boolean): BmiFullResult? {
+    if (height <= 0 || weight <= 0) return null
+
+    val bmi = if (useMetric) {
+        val heightInMeters = height / 100
+        weight / heightInMeters.pow(2)
+    } else {
+        (weight * 703) / height.pow(2)
+    }
+
+    val category = determineBmiCategory(bmi)
+    val heightInMeters = if (useMetric) height / 100 else height * 0.0254
+    val minHealthyWeight = 18.5 * heightInMeters.pow(2)
+    val maxHealthyWeight = 25.0 * heightInMeters.pow(2)
+
+    val healthyWeightRangeString = if (useMetric) {
+        String.format("%.1f kg - %.1f kg", minHealthyWeight, maxHealthyWeight)
+    } else {
+        val minHealthyWeightLbs = minHealthyWeight * 2.20462
+        val maxHealthyWeightLbs = maxHealthyWeight * 2.20462
+        String.format("%.1f lbs - %.1f lbs", minHealthyWeightLbs, maxHealthyWeightLbs)
+    }
+
+    val bmiPrime = bmi / 25.0
+    val weightInKg = if (useMetric) weight else weight * 0.453592
+    val ponderalIndex = weightInKg / heightInMeters.pow(3)
+
+    return BmiFullResult(
+        bmi = bmi,
+        category = category,
+        healthyWeightRange = healthyWeightRangeString,
+        bmiPrime = bmiPrime,
+        ponderalIndex = ponderalIndex
+    )
+}
+
+/**
+ * Menentukan kategori BMI berdasarkan nilainya.
+ */
+fun determineBmiCategory(bmi: Double): String {
+    return when {
+        bmi < 18.5 -> "Berat badan kurang"
+        bmi < 25 -> "Normal"
+        bmi < 30 -> "Berat badan lebih"
+        else -> "Obesitas"
+    }
+}

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

@@ -9,35 +9,39 @@ import androidx.activity.compose.setContent
 import androidx.compose.animation.AnimatedVisibility
 import androidx.compose.animation.core.animateFloatAsState
 import androidx.compose.foundation.Canvas
+import androidx.compose.foundation.Image
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.DateRange
-import androidx.compose.material.icons.filled.LineWeight
-import androidx.compose.material.icons.filled.Person
+import androidx.compose.material.icons.filled.MonitorWeight
 import androidx.compose.material.icons.filled.SwapVert
 import androidx.compose.material3.*
 import androidx.compose.runtime.*
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
 import androidx.compose.ui.geometry.Offset
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.StrokeCap
 import androidx.compose.ui.graphics.drawscope.Stroke
 import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.input.ImeAction
 import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import com.example.tiptime.ui.theme.TipTimeTheme
 import java.util.Locale
+// --- PERBAIKAN DI SINI: Menambahkan kembali import yang hilang ---
 import kotlin.math.cos
-import kotlin.math.pow
 import kotlin.math.sin
 
 class MainActivity : ComponentActivity() {
@@ -53,15 +57,6 @@ class MainActivity : ComponentActivity() {
     }
 }
 
-data class BmiFullResult(
-    val bmi: Double,
-    val category: String,
-    val healthyBmiRange: String = "18.5 - 25.0",
-    val healthyWeightRange: String,
-    val bmiPrime: Double,
-    val ponderalIndex: Double
-)
-
 @Composable
 fun BmiCalculatorScreen() {
     var heightInput by remember { mutableStateOf("") }
@@ -76,8 +71,6 @@ fun BmiCalculatorScreen() {
         heightInput = ""
         weightInput = ""
         ageInput = ""
-        selectedGender = "Laki-laki"
-        useMetricUnits = true
         bmiResult = null
         validationError = null
     }
@@ -89,15 +82,11 @@ fun BmiCalculatorScreen() {
             .verticalScroll(rememberScrollState()),
         horizontalAlignment = Alignment.CenterHorizontally
     ) {
-        Text("Kalkulator BMI", style = MaterialTheme.typography.headlineLarge, fontWeight = FontWeight.Bold)
-        Spacer(Modifier.height(8.dp))
-        Text("by Hadi Prakoso", style = MaterialTheme.typography.bodyMedium, color = MaterialTheme.colorScheme.primary)
-        Spacer(Modifier.height(24.dp))
+        Header()
 
         AnimatedVisibility(visible = bmiResult != null) {
             bmiResult?.let { ResultDisplay(it) }
         }
-
         if (bmiResult != null) {
             Spacer(Modifier.height(24.dp))
         }
@@ -115,7 +104,8 @@ fun BmiCalculatorScreen() {
                 text = it,
                 color = MaterialTheme.colorScheme.error,
                 style = MaterialTheme.typography.bodySmall,
-                modifier = Modifier.padding(top = 8.dp)
+                modifier = Modifier.padding(top = 8.dp),
+                textAlign = TextAlign.Center
             )
         }
 
@@ -127,24 +117,11 @@ fun BmiCalculatorScreen() {
                 val weight = weightInput.toDoubleOrNull()
                 val age = ageInput.toIntOrNull()
 
-                // Input Validation
                 when {
-                    height == null || weight == null || age == null -> {
-                        validationError = "Semua kolom (Umur, Tinggi, Berat) harus diisi dengan angka."
-                        bmiResult = null
-                    }
-                    age <= 0 || age > 120 -> {
-                        validationError = "Umur tidak wajar."
-                        bmiResult = null
-                    }
-                    (useMetricUnits && (height <= 50 || height > 270)) || (!useMetricUnits && (height <= 20 || height > 108)) -> {
-                        validationError = "Tinggi badan tidak wajar."
-                        bmiResult = null
-                    }
-                    (useMetricUnits && (weight <= 20 || weight > 500)) || (!useMetricUnits && (weight <= 45 || weight > 1100)) -> {
-                        validationError = "Berat badan tidak wajar."
-                        bmiResult = null
-                    }
+                    height == null || weight == null || age == null -> validationError = "Semua kolom harus diisi dengan angka."
+                    age <= 0 || age > 120 -> validationError = "Umur tidak wajar."
+                    (useMetricUnits && (height <= 50 || height > 270)) || (!useMetricUnits && (height <= 20 || height > 108)) -> validationError = "Tinggi badan tidak wajar."
+                    (useMetricUnits && (weight <= 20 || weight > 500)) || (!useMetricUnits && (weight <= 45 || weight > 1100)) -> validationError = "Berat badan tidak wajar."
                     else -> {
                         validationError = null
                         bmiResult = calculateBmi(weight, height, useMetricUnits)
@@ -156,6 +133,21 @@ fun BmiCalculatorScreen() {
     }
 }
 
+@Composable
+fun Header() {
+    Image(
+        painter = painterResource(id = R.drawable.ic_launcher_playstore),
+        contentDescription = "Logo Aplikasi",
+        modifier = Modifier
+            .size(80.dp)
+            .clip(CircleShape)
+    )
+    Spacer(Modifier.height(16.dp))
+    Text("Kalkulator BMI", style = MaterialTheme.typography.headlineLarge)
+    Text("by Hadi Prakoso", style = MaterialTheme.typography.bodyMedium, color = MaterialTheme.colorScheme.primary)
+    Spacer(Modifier.height(24.dp))
+}
+
 @Composable
 fun ResultDisplay(result: BmiFullResult) {
     Card(
@@ -164,13 +156,12 @@ fun ResultDisplay(result: BmiFullResult) {
         colors = CardDefaults.cardColors(containerColor = MaterialTheme.colorScheme.surface)
     ) {
         Column(Modifier.padding(24.dp).fillMaxWidth(), horizontalAlignment = Alignment.CenterHorizontally) {
-            Text("Hasil", style = MaterialTheme.typography.headlineSmall, fontWeight = FontWeight.Bold)
+            Text("Hasil", style = MaterialTheme.typography.headlineSmall)
             Spacer(Modifier.height(16.dp))
             BmiGauge(bmi = result.bmi)
             Spacer(Modifier.height(16.dp))
             Text("BMI = ${String.format("%.1f", result.bmi)} kg/m² (${result.category})",
                 style = MaterialTheme.typography.titleLarge,
-                fontWeight = FontWeight.Bold,
                 color = MaterialTheme.colorScheme.primary
             )
             Spacer(Modifier.height(24.dp))
@@ -221,8 +212,13 @@ fun BmiGauge(bmi: Double) {
             drawCircle(surfaceColor, radius = 5.dp.toPx(), center = center)
         }
 
-        Column(horizontalAlignment = Alignment.CenterHorizontally) {
-            Text(text = "BMI", style = MaterialTheme.typography.bodyLarge)
+        Column(
+            horizontalAlignment = Alignment.CenterHorizontally,
+            verticalArrangement = Arrangement.Bottom,
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(bottom = 50.dp)
+        ) {
             Text(
                 text = if (bmi > 0) String.format(Locale.getDefault(), "%.1f", bmi) else "-",
                 style = MaterialTheme.typography.displayMedium.copy(fontWeight = FontWeight.Bold, color = onSurfaceColor)
@@ -252,12 +248,18 @@ fun InputPanel(
     val heightLabel = if (useMetric) "Tinggi (cm)" else "Tinggi (in)"
     val weightLabel = if (useMetric) "Berat (kg)" else "Berat (lbs)"
 
-    Column(Modifier.fillMaxWidth(), verticalArrangement = Arrangement.spacedBy(16.dp)) {
-        UnitToggle(useMetric = useMetric, onUnitChange = onUnitChange)
-        GenderSelector(selectedGender, onOptionSelected = { onGenderSelect(it) })
-        BmiTextField(label = "Umur", value = ageInput, onValueChange = onAgeChange, icon = Icons.Default.DateRange)
-        BmiTextField(label = heightLabel, value = heightInput, onValueChange = onHeightChange, icon = Icons.Default.SwapVert)
-        BmiTextField(label = weightLabel, value = weightInput, onValueChange = onWeightChange, icon = Icons.Default.LineWeight)
+    Card(
+        modifier = Modifier.fillMaxWidth(),
+        shape = RoundedCornerShape(16.dp),
+        colors = CardDefaults.cardColors(containerColor = MaterialTheme.colorScheme.surfaceVariant.copy(alpha = 0.3f))
+    ) {
+        Column(Modifier.padding(24.dp), verticalArrangement = Arrangement.spacedBy(16.dp)) {
+            UnitToggle(useMetric = useMetric, onUnitChange = onUnitChange)
+            GenderSelector(selectedGender, onOptionSelected = { onGenderSelect(it) })
+            BmiTextField(label = "Umur", value = ageInput, onValueChange = onAgeChange, icon = Icons.Default.DateRange)
+            BmiTextField(label = heightLabel, value = heightInput, onValueChange = onHeightChange, icon = Icons.Default.SwapVert)
+            BmiTextField(label = weightLabel, value = weightInput, onValueChange = onWeightChange, icon = Icons.Default.MonitorWeight)
+        }
     }
 }
 
@@ -288,6 +290,8 @@ fun GenderSelector(selectedOption: String, onOptionSelected: (String) -> Unit) {
         val options = listOf("Laki-laki", "Perempuan")
         options.forEach { gender ->
             val isSelected = selectedOption == gender
+            val iconRes = if (gender == "Laki-laki") R.drawable.ic_male else R.drawable.ic_female
+
             Button(
                 onClick = { onOptionSelected(gender) },
                 shape = RoundedCornerShape(12.dp),
@@ -297,7 +301,11 @@ fun GenderSelector(selectedOption: String, onOptionSelected: (String) -> Unit) {
                 ),
                 modifier = Modifier.weight(1f)
             ) {
-                Icon(Icons.Default.Person, contentDescription = gender, modifier = Modifier.size(18.dp))
+                Icon(
+                    painter = painterResource(id = iconRes),
+                    contentDescription = gender,
+                    modifier = Modifier.size(24.dp)
+                )
                 Spacer(Modifier.width(8.dp))
                 Text(gender)
             }
@@ -318,52 +326,6 @@ fun BmiTextField(label: String, value: String, onValueChange: (String) -> Unit,
     )
 }
 
-// --- Calculation Logic ---
-fun calculateBmi(weight: Double, height: Double, useMetric: Boolean): BmiFullResult? {
-    if (height <= 0 || weight <= 0) return null
-
-    val bmi = if (useMetric) {
-        val heightInMeters = height / 100
-        weight / heightInMeters.pow(2)
-    } else {
-        (weight * 703) / height.pow(2)
-    }
-
-    val category = determineBmiCategory(bmi)
-    val heightInMeters = if (useMetric) height / 100 else height * 0.0254
-    val minHealthyWeight = 18.5 * heightInMeters.pow(2)
-    val maxHealthyWeight = 25.0 * heightInMeters.pow(2)
-
-    val healthyWeightRangeString = if (useMetric) {
-        String.format("%.1f kg - %.1f kg", minHealthyWeight, maxHealthyWeight)
-    } else {
-        val minHealthyWeightLbs = minHealthyWeight * 2.20462
-        val maxHealthyWeightLbs = maxHealthyWeight * 2.20462
-        String.format("%.1f lbs - %.1f lbs", minHealthyWeightLbs, maxHealthyWeightLbs)
-    }
-
-    val bmiPrime = bmi / 25.0
-    val weightInKg = if (useMetric) weight else weight * 0.453592
-    val ponderalIndex = weightInKg / heightInMeters.pow(3)
-
-    return BmiFullResult(
-        bmi = bmi,
-        category = category,
-        healthyWeightRange = healthyWeightRangeString,
-        bmiPrime = bmiPrime,
-        ponderalIndex = ponderalIndex
-    )
-}
-
-fun determineBmiCategory(bmi: Double): String {
-    return when {
-        bmi < 18.5 -> "Berat badan kurang"
-        bmi < 25 -> "Normal"
-        bmi < 30 -> "Berat badan lebih"
-        else -> "Obesitas"
-    }
-}
-
 @Preview(showBackground = true, widthDp = 360, heightDp = 800)
 @Composable
 fun BmiCalculatorScreenPreview() {

app/src/main/java/com/example/tiptime/ui/theme/Type.kt

@@ -5,32 +5,42 @@ import androidx.compose.ui.text.TextStyle
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.sp
 
-// Set of Material typography styles to start with
+// Mengatur Typography default untuk menggunakan font Poppins
 val Typography = Typography(
-    // Override default text styles to use Poppins
-    headlineMedium = TextStyle(
+    headlineLarge = TextStyle(
         fontFamily = Poppins,
         fontWeight = FontWeight.Bold,
-        fontSize = 28.sp
+        fontSize = 32.sp,
+        lineHeight = 40.sp,
+        letterSpacing = 0.sp
     ),
-    titleMedium = TextStyle(
+    titleLarge = TextStyle(
         fontFamily = Poppins,
-        fontWeight = FontWeight.Normal,
-        fontSize = 16.sp
+        fontWeight = FontWeight.Bold,
+        fontSize = 22.sp,
+        lineHeight = 28.sp,
+        letterSpacing = 0.sp
     ),
     bodyLarge = TextStyle(
         fontFamily = Poppins,
         fontWeight = FontWeight.Normal,
-        fontSize = 16.sp
+        fontSize = 16.sp,
+        lineHeight = 24.sp,
+        letterSpacing = 0.5.sp
     ),
     bodyMedium = TextStyle(
         fontFamily = Poppins,
         fontWeight = FontWeight.Normal,
-        fontSize = 14.sp
+        fontSize = 14.sp,
+        lineHeight = 20.sp,
+        letterSpacing = 0.25.sp
     ),
-    displayMedium = TextStyle(
+    labelMedium = TextStyle(
         fontFamily = Poppins,
-        fontWeight = FontWeight.Bold,
-        fontSize = 57.sp
+        fontWeight = FontWeight.Medium,
+        fontSize = 12.sp,
+        lineHeight = 16.sp,
+        letterSpacing = 0.5.sp
     )
+    /* Anda bisa menambahkan style lain di sini jika diperlukan */
 )

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

@@ -0,0 +1,13 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="800dp"
+    android:height="800dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+  <path
+      android:pathData="M9,18H10M12,18H15M12,13V21M12,13C14.761,13 17,10.761 17,8M12,13C9.239,13 7,10.761 7,8C7,5.239 9.239,3 12,3C13.126,3 14.164,3.372 15,4"
+      android:strokeLineJoin="round"
+      android:strokeWidth="1.5"
+      android:fillColor="#00000000"
+      android:strokeColor="#000000"
+      android:strokeLineCap="round"/>
+</vector>

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

@@ -0,0 +1,13 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="800dp"
+    android:height="800dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+  <path
+      android:pathData="M17,16C17,18.761 14.761,21 12,21C9.239,21 7,18.761 7,16C7,13.239 9.239,11 12,11M12,11C13.126,11 14.164,11.372 15,12M12,11V3L16,7M10,5L8,7"
+      android:strokeLineJoin="round"
+      android:strokeWidth="1.5"
+      android:fillColor="#00000000"
+      android:strokeColor="#000000"
+      android:strokeLineCap="round"/>
+</vector>

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" />
-    <foreground android:drawable="@drawable/ic_launcher_foreground" />
-    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/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" />
-    <foreground android:drawable="@drawable/ic_launcher_foreground" />
-    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
 </adaptive-icon>

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

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#1F7A6F</color>
+</resources>