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/* | |
* 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 | |
* | |
* http://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.dessertclicker | |
import android.content.ActivityNotFoundException | |
import android.content.Context | |
import android.content.Intent | |
import android.os.Bundle | |
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.remember | |
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 | |
import android.util.Log | |
import androidx.compose.runtime.saveable.rememberSaveable | |
private const val TAG = "MainActivity" | |
class MainActivity : ComponentActivity() { | |
override fun onCreate(savedInstanceState: Bundle?) { | |
enableEdgeToEdge() | |
super.onCreate(savedInstanceState) | |
Log.d(TAG, "onCreate Called") | |
setContent { | |
DessertClickerTheme { | |
// A surface container using the 'background' color from the theme | |
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") | |
} | |
} | |
/** | |
* Determine which dessert to show. | |
*/ | |
fun determineDessertToShow( | |
desserts: List<Dessert>, | |
dessertsSold: Int | |
): Dessert { | |
var dessertToShow = desserts.first() | |
for (dessert in desserts) { | |
if (dessertsSold >= dessert.startProductionAmount) { | |
dessertToShow = dessert | |
} else { | |
// The list of desserts is sorted by startProductionAmount. As you sell more desserts, | |
// you'll start producing more expensive desserts as determined by startProductionAmount | |
// We know to break as soon as we see a dessert who's "startProductionAmount" is greater | |
// than the amount sold. | |
break | |
} | |
} | |
return dessertToShow | |
} | |
/** | |
* Share desserts sold information using ACTION_SEND intent | |
*/ | |
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))) | |
} | |
} |
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