edit ketiga
This commit is contained in:
RafiFattan23
parent
838765e98c
commit
fc61c397e1
@ -6,6 +6,7 @@ import androidx.activity.compose.setContent
|
||||
import androidx.activity.enableEdgeToEdge
|
||||
import androidx.annotation.DrawableRes
|
||||
import androidx.annotation.StringRes
|
||||
import androidx.compose.foundation.background
|
||||
import androidx.compose.foundation.layout.*
|
||||
import androidx.compose.foundation.rememberScrollState
|
||||
import androidx.compose.foundation.text.KeyboardOptions
|
||||
@ -20,11 +21,9 @@ import androidx.compose.ui.text.input.ImeAction
|
||||
import androidx.compose.ui.text.input.KeyboardType
|
||||
import androidx.compose.ui.tooling.preview.Preview
|
||||
import androidx.compose.ui.unit.dp
|
||||
import androidx.compose.ui.graphics.Brush
|
||||
import com.example.tiptime.ui.theme.TipTimeTheme
|
||||
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?) {
|
||||
@ -44,15 +43,21 @@ class MainActivity : ComponentActivity() {
|
||||
fun BmiCalculatorLayout() {
|
||||
var heightInput by remember { mutableStateOf("") }
|
||||
var weightInput by remember { mutableStateOf("") }
|
||||
var useMetricSystem by remember { mutableStateOf(true) } // ✅ toggle sistem satuan
|
||||
var errorMessage by remember { mutableStateOf("") }
|
||||
|
||||
// State untuk hasil BMI
|
||||
var bmiResult by remember { mutableStateOf<Float?>(null) }
|
||||
var bmiCategory by remember { mutableStateOf("") }
|
||||
var showResult by remember { mutableStateOf(false) } // ✅ hasil hanya tampil setelah tombol ditekan
|
||||
|
||||
val height = heightInput.toFloatOrNull() ?: 0f
|
||||
val weight = weightInput.toFloatOrNull() ?: 0f
|
||||
val isValid = validateInput(height, weight)
|
||||
|
||||
val isValid = validateInput(height, weight, useMetricSystem)
|
||||
|
||||
// Konversi tinggi & berat ke sistem metrik (meter & kg)
|
||||
val heightInMeters = if (useMetricSystem) height / 100f else height * 0.0254f
|
||||
val weightInKg = if (useMetricSystem) weight else weight * 0.453592f
|
||||
|
||||
val bmi = if (isValid && showResult) weightInKg / heightInMeters.pow(2) else 0f
|
||||
val category = if (isValid && showResult) getBMICategory(bmi) else ""
|
||||
|
||||
Box(
|
||||
modifier = Modifier
|
||||
@ -70,6 +75,7 @@ fun BmiCalculatorLayout() {
|
||||
) {
|
||||
Column(horizontalAlignment = Alignment.CenterHorizontally) {
|
||||
|
||||
// Judul Aplikasi
|
||||
Row(verticalAlignment = Alignment.CenterVertically) {
|
||||
Icon(
|
||||
painter = painterResource(id = R.drawable.ic_launcher_foreground),
|
||||
@ -88,6 +94,22 @@ fun BmiCalculatorLayout() {
|
||||
|
||||
Spacer(modifier = Modifier.height(24.dp))
|
||||
|
||||
// Toggle Sistem Satuan
|
||||
Row(
|
||||
verticalAlignment = Alignment.CenterVertically,
|
||||
horizontalArrangement = Arrangement.Center
|
||||
) {
|
||||
Text("SI (kg, cm)")
|
||||
Switch(
|
||||
checked = !useMetricSystem,
|
||||
onCheckedChange = { useMetricSystem = !useMetricSystem }
|
||||
)
|
||||
Text("USC (lbs, inci)")
|
||||
}
|
||||
|
||||
Spacer(modifier = Modifier.height(24.dp))
|
||||
|
||||
// Card Input
|
||||
Card(
|
||||
elevation = CardDefaults.cardElevation(defaultElevation = 8.dp),
|
||||
colors = CardDefaults.cardColors(
|
||||
@ -100,7 +122,7 @@ fun BmiCalculatorLayout() {
|
||||
horizontalAlignment = Alignment.CenterHorizontally
|
||||
) {
|
||||
EditNumberField(
|
||||
label = R.string.height,
|
||||
label = if (useMetricSystem) R.string.height else R.string.height_inch,
|
||||
leadingIcon = R.drawable.number,
|
||||
keyboardOptions = KeyboardOptions(
|
||||
keyboardType = KeyboardType.Number,
|
||||
@ -114,7 +136,7 @@ fun BmiCalculatorLayout() {
|
||||
)
|
||||
|
||||
EditNumberField(
|
||||
label = R.string.weight,
|
||||
label = if (useMetricSystem) R.string.weight else R.string.weight_lbs,
|
||||
leadingIcon = R.drawable.number,
|
||||
keyboardOptions = KeyboardOptions(
|
||||
keyboardType = KeyboardType.Number,
|
||||
@ -129,15 +151,18 @@ fun BmiCalculatorLayout() {
|
||||
|
||||
Spacer(modifier = Modifier.height(24.dp))
|
||||
|
||||
// Tombol Hitung BMI
|
||||
Button(
|
||||
onClick = {
|
||||
if (!isValid) {
|
||||
errorMessage = "Masukkan tinggi (20–250 cm) dan berat (10–250 kg) yang valid!"
|
||||
bmiResult = null
|
||||
showResult = false
|
||||
errorMessage = if (useMetricSystem)
|
||||
"Masukkan tinggi (20–250 cm) dan berat (10–250 kg) yang valid!"
|
||||
else
|
||||
"Masukkan tinggi (≥4 inci) dan berat (5–550 lbs) yang valid!"
|
||||
} else {
|
||||
errorMessage = ""
|
||||
bmiResult = calculateBMI(weight, height)
|
||||
bmiCategory = getBMICategory(bmiResult!!)
|
||||
showResult = true
|
||||
}
|
||||
},
|
||||
modifier = Modifier
|
||||
@ -145,9 +170,13 @@ fun BmiCalculatorLayout() {
|
||||
.height(56.dp),
|
||||
elevation = ButtonDefaults.elevatedButtonElevation(8.dp)
|
||||
) {
|
||||
Text(text = "Hitung BMI", style = MaterialTheme.typography.titleMedium)
|
||||
Text(
|
||||
text = "Hitung BMI",
|
||||
style = MaterialTheme.typography.titleMedium
|
||||
)
|
||||
}
|
||||
|
||||
// Pesan error
|
||||
if (errorMessage.isNotEmpty()) {
|
||||
Text(
|
||||
text = errorMessage,
|
||||
@ -157,9 +186,9 @@ fun BmiCalculatorLayout() {
|
||||
)
|
||||
}
|
||||
|
||||
// Tampilkan hasil hanya jika sudah ditekan
|
||||
bmiResult?.let { bmi ->
|
||||
val categoryColor = when (bmiCategory) {
|
||||
// Hasil BMI hanya tampil setelah ditekan tombol
|
||||
if (showResult && isValid) {
|
||||
val categoryColor = when (category) {
|
||||
"Kurus" -> MaterialTheme.colorScheme.tertiaryContainer
|
||||
"Normal" -> MaterialTheme.colorScheme.primaryContainer
|
||||
"Kelebihan Berat" -> MaterialTheme.colorScheme.secondaryContainer
|
||||
@ -182,7 +211,7 @@ fun BmiCalculatorLayout() {
|
||||
style = MaterialTheme.typography.titleLarge
|
||||
)
|
||||
Text(
|
||||
text = "Kategori: $bmiCategory",
|
||||
text = "Kategori: $category",
|
||||
style = MaterialTheme.typography.bodyLarge
|
||||
)
|
||||
}
|
||||
@ -192,11 +221,6 @@ fun BmiCalculatorLayout() {
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Fungsi untuk membuat TextField input angka
|
||||
*/
|
||||
@Composable
|
||||
fun EditNumberField(
|
||||
@StringRes label: Int,
|
||||
@ -217,18 +241,6 @@ fun EditNumberField(
|
||||
)
|
||||
}
|
||||
|
||||
/**
|
||||
* Menghitung nilai BMI berdasarkan berat (kg) dan tinggi (cm)
|
||||
* Rumus: BMI = berat / (tinggi/100)^2
|
||||
*/
|
||||
fun calculateBMI(weight: Float, height: Float): Float {
|
||||
if (height <= 0) return 0f
|
||||
return weight / (height / 100).pow(2)
|
||||
}
|
||||
|
||||
/**
|
||||
* Menentukan kategori BMI
|
||||
*/
|
||||
fun getBMICategory(bmi: Float): String {
|
||||
return when {
|
||||
bmi < 18.5 -> "Kurus"
|
||||
@ -238,11 +250,11 @@ fun getBMICategory(bmi: Float): String {
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Validasi input agar nilai masuk akal
|
||||
*/
|
||||
fun validateInput(height: Float, weight: Float): Boolean {
|
||||
return height in 20f..250f && weight in 10f..250f
|
||||
fun validateInput(height: Float, weight: Float, useMetric: Boolean): Boolean {
|
||||
return if (useMetric)
|
||||
height in 20f..250f && weight in 10f..250f
|
||||
else
|
||||
height >= 4f && height <= 100f && weight in 5f..550f
|
||||
}
|
||||
|
||||
@Preview(showBackground = true)
|
||||
|
||||
@ -22,4 +22,6 @@
|
||||
<string name="use_usc">Gunakan Unit USC (lbs/in)?</string>
|
||||
<string name="bmi_calculation">BMI Anda: %s</string>
|
||||
<string name="bmi_category">Kategori: %s</string>
|
||||
<string name="height_inch">Tinggi Badan</string>
|
||||
<string name="weight_lbs">Berat Badan</string>
|
||||
</resources>
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user