Tugas Minggu 10 PPB I

Nama    : Tegar Ganang Satrio Priambodo

NRP       : 5025201002

Kelas     : PPB I

Latihan Activity dan Intent

Pada latihan ini, perlu untuk memahami lifecycle activity pada studi kasus aplikasi Dessert Clicker dimana ketika user berinteraksi dengan klik gambar kue, maka terjadi penambahan jumlah kue dan revenue yang diterima. Jumlah kue dan revenue tidak akan berkurang jika pengguna keluar dan masuk kembali ke aplikasi.

	package com.example.dessertclicker
	import android.content.ActivityNotFoundException
	import android.content.Context
	import android.content.Intent
	import android.os.Bundle
	import android.util.Log
	import android.widget.Toast
	import androidx.activity.ComponentActivity
	import androidx.activity.compose.setContent
	import androidx.activity.enableEdgeToEdge
	import androidx.annotation.DrawableRes
	import androidx.compose.foundation.Image
	import androidx.compose.foundation.background
	import androidx.compose.foundation.clickable
	import androidx.compose.foundation.layout.Arrangement
	import androidx.compose.foundation.layout.Box
	import androidx.compose.foundation.layout.Column
	import androidx.compose.foundation.layout.Row
	import androidx.compose.foundation.layout.WindowInsets
	import androidx.compose.foundation.layout.asPaddingValues
	import androidx.compose.foundation.layout.calculateEndPadding
	import androidx.compose.foundation.layout.calculateStartPadding
	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.safeDrawing
	import androidx.compose.foundation.layout.statusBarsPadding
	import androidx.compose.foundation.layout.width
	import androidx.compose.material.icons.Icons
	import androidx.compose.material.icons.filled.Share
	import androidx.compose.material3.Scaffold
	import androidx.compose.material3.Icon
	import androidx.compose.material3.IconButton
	import androidx.compose.material3.MaterialTheme
	import androidx.compose.material3.Surface
	import androidx.compose.material3.Text
	import androidx.compose.runtime.Composable
	import androidx.compose.runtime.getValue
	import androidx.compose.runtime.mutableStateOf
	import androidx.compose.runtime.saveable.rememberSaveable
	import androidx.compose.runtime.setValue
	import androidx.compose.ui.Alignment
	import androidx.compose.ui.Modifier
	import androidx.compose.ui.layout.ContentScale
	import androidx.compose.ui.platform.LocalContext
	import androidx.compose.ui.platform.LocalLayoutDirection
	import androidx.compose.ui.res.dimensionResource
	import androidx.compose.ui.res.painterResource
	import androidx.compose.ui.res.stringResource
	import androidx.compose.ui.text.style.TextAlign
	import androidx.compose.ui.tooling.preview.Preview
	import androidx.core.content.ContextCompat
	import com.example.dessertclicker.data.Datasource
	import com.example.dessertclicker.model.Dessert
	import com.example.dessertclicker.ui.theme.DessertClickerTheme
	// Tag for logging
	private const val TAG = "MainActivity"
	class MainActivity : ComponentActivity() {
	override fun onCreate(savedInstanceState: Bundle?) {
	enableEdgeToEdge()
	super.onCreate(savedInstanceState)
	Log.d(TAG, "onCreate Called")
	setContent {
	DessertClickerTheme {
	Surface(
	modifier = Modifier
	.fillMaxSize()
	.statusBarsPadding(),
	) {
	DessertClickerApp(desserts = Datasource.dessertList)
	}
	}
	}
	}
	override fun onStart() {
	super.onStart()
	Log.d(TAG, "onStart Called")
	}
	override fun onResume() {
	super.onResume()
	Log.d(TAG, "onResume Called")
	}
	override fun onRestart() {
	super.onRestart()
	Log.d(TAG, "onRestart Called")
	}
	override fun onPause() {
	super.onPause()
	Log.d(TAG, "onPause Called")
	}
	override fun onStop() {
	super.onStop()
	Log.d(TAG, "onStop Called")
	}
	override fun onDestroy() {
	super.onDestroy()
	Log.d(TAG, "onDestroy Called")
	}
	}
	fun determineDessertToShow(
	desserts: List<Dessert>,
	dessertsSold: Int
	): Dessert {
	var dessertToShow = desserts.first()
	for (dessert in desserts) {
	if (dessertsSold >= dessert.startProductionAmount) {
	dessertToShow = dessert
	} else {
	break
	}
	}
	return dessertToShow
	}
	private fun shareSoldDessertsInformation(intentContext: Context, dessertsSold: Int, revenue: Int) {
	val sendIntent = Intent().apply {
	action = Intent.ACTION_SEND
	putExtra(
	Intent.EXTRA_TEXT,
	intentContext.getString(R.string.share_text, dessertsSold, revenue)
	)
	type = "text/plain"
	}
	val shareIntent = Intent.createChooser(sendIntent, null)
	try {
	ContextCompat.startActivity(intentContext, shareIntent, null)
	} catch (e: ActivityNotFoundException) {
	Toast.makeText(
	intentContext,
	intentContext.getString(R.string.sharing_not_available),
	Toast.LENGTH_LONG
	).show()
	}
	}
	@Composable
	private fun DessertClickerApp(
	desserts: List<Dessert>
	) {
	var revenue by rememberSaveable { mutableStateOf(0) }
	var dessertsSold by rememberSaveable { mutableStateOf(0) }
	val currentDessertIndex by rememberSaveable { mutableStateOf(0) }
	var currentDessertPrice by rememberSaveable {
	mutableStateOf(desserts[currentDessertIndex].price)
	}
	var currentDessertImageId by rememberSaveable {
	mutableStateOf(desserts[currentDessertIndex].imageId)
	}
	Scaffold(
	topBar = {
	val intentContext = LocalContext.current
	val layoutDirection = LocalLayoutDirection.current
	DessertClickerAppBar(
	onShareButtonClicked = {
	shareSoldDessertsInformation(
	intentContext = intentContext,
	dessertsSold = dessertsSold,
	revenue = revenue
	)
	},
	modifier = Modifier
	.fillMaxWidth()
	.padding(
	start = WindowInsets.safeDrawing.asPaddingValues()
	.calculateStartPadding(layoutDirection),
	end = WindowInsets.safeDrawing.asPaddingValues()
	.calculateEndPadding(layoutDirection),
	)
	.background(MaterialTheme.colorScheme.primary)
	)
	}
	) { contentPadding ->
	DessertClickerScreen(
	revenue = revenue,
	dessertsSold = dessertsSold,
	dessertImageId = currentDessertImageId,
	onDessertClicked = {
	// Update the revenue
	revenue += currentDessertPrice
	dessertsSold++
	// Show the next dessert
	val dessertToShow = determineDessertToShow(desserts, dessertsSold)
	currentDessertImageId = dessertToShow.imageId
	currentDessertPrice = dessertToShow.price
	},
	modifier = Modifier.padding(contentPadding)
	)
	}
	}
	@Composable
	private fun DessertClickerAppBar(
	onShareButtonClicked: () -> Unit,
	modifier: Modifier = Modifier
	) {
	Row(
	modifier = modifier,
	horizontalArrangement = Arrangement.SpaceBetween,
	verticalAlignment = Alignment.CenterVertically,
	) {
	Text(
	text = stringResource(R.string.app_name),
	modifier = Modifier.padding(start = dimensionResource(R.dimen.padding_medium)),
	color = MaterialTheme.colorScheme.onPrimary,
	style = MaterialTheme.typography.titleLarge,
	)
	IconButton(
	onClick = onShareButtonClicked,
	modifier = Modifier.padding(end = dimensionResource(R.dimen.padding_medium)),
	) {
	Icon(
	imageVector = Icons.Filled.Share,
	contentDescription = stringResource(R.string.share),
	tint = MaterialTheme.colorScheme.onPrimary
	)
	}
	}
	}
	@Composable
	fun DessertClickerScreen(
	revenue: Int,
	dessertsSold: Int,
	@DrawableRes dessertImageId: Int,
	onDessertClicked: () -> Unit,
	modifier: Modifier = Modifier
	) {
	Box(modifier = modifier) {
	Image(
	painter = painterResource(R.drawable.bakery_back),
	contentDescription = null,
	contentScale = ContentScale.Crop
	)
	Column {
	Box(
	modifier = Modifier
	.weight(1f)
	.fillMaxWidth(),
	) {
	Image(
	painter = painterResource(dessertImageId),
	contentDescription = null,
	modifier = Modifier
	.width(dimensionResource(R.dimen.image_size))
	.height(dimensionResource(R.dimen.image_size))
	.align(Alignment.Center)
	.clickable { onDessertClicked() },
	contentScale = ContentScale.Crop,
	)
	}
	TransactionInfo(
	revenue = revenue,
	dessertsSold = dessertsSold,
	modifier = Modifier.background(MaterialTheme.colorScheme.secondaryContainer)
	)
	}
	}
	}
	@Composable
	private fun TransactionInfo(
	revenue: Int,
	dessertsSold: Int,
	modifier: Modifier = Modifier
	) {
	Column(modifier = modifier) {
	DessertsSoldInfo(
	dessertsSold = dessertsSold,
	modifier = Modifier
	.fillMaxWidth()
	.padding(dimensionResource(R.dimen.padding_medium))
	)
	RevenueInfo(
	revenue = revenue,
	modifier = Modifier
	.fillMaxWidth()
	.padding(dimensionResource(R.dimen.padding_medium))
	)
	}
	}
	@Composable
	private fun RevenueInfo(revenue: Int, modifier: Modifier = Modifier) {
	Row(
	modifier = modifier,
	horizontalArrangement = Arrangement.SpaceBetween,
	) {
	Text(
	text = stringResource(R.string.total_revenue),
	style = MaterialTheme.typography.headlineMedium,
	color = MaterialTheme.colorScheme.onSecondaryContainer
	)
	Text(
	text = "$${revenue}",
	textAlign = TextAlign.Right,
	style = MaterialTheme.typography.headlineMedium,
	color = MaterialTheme.colorScheme.onSecondaryContainer
	)
	}
	}
	@Composable
	private fun DessertsSoldInfo(dessertsSold: Int, modifier: Modifier = Modifier) {
	Row(
	modifier = modifier,
	horizontalArrangement = Arrangement.SpaceBetween,
	) {
	Text(
	text = stringResource(R.string.dessert_sold),
	style = MaterialTheme.typography.titleLarge,
	color = MaterialTheme.colorScheme.onSecondaryContainer
	)
	Text(
	text = dessertsSold.toString(),
	style = MaterialTheme.typography.titleLarge,
	color = MaterialTheme.colorScheme.onSecondaryContainer
	)
	}
	}
	@Preview
	@Composable
	fun MyDessertClickerAppPreview() {
	DessertClickerTheme {
	DessertClickerApp(listOf(Dessert(R.drawable.cupcake, 5, 0)))
	}
	}

view raw MainActivity.kt hosted with ❤ by GitHub