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Added Jetpack Compose LazyList Banner Sample.
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6 changes: 0 additions & 6 deletions
6
...mo/app/src/main/java/com/google/android/gms/example/jetpackcomposedemo/NavDestinations.kt
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...c/main/java/com/google/android/gms/example/jetpackcomposedemo/formats/LazyBannerScreen.kt
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| /* | ||
| * Copyright 2024 Google LLC | ||
| * | ||
| * 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. | ||
| */ | ||
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| package com.google.android.gms.example.jetpackcomposedemo.formats | ||
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| import android.content.Context | ||
| import android.util.Log | ||
| import androidx.compose.foundation.background | ||
| import androidx.compose.foundation.layout.Arrangement | ||
| import androidx.compose.foundation.layout.Box | ||
| import androidx.compose.foundation.layout.Column | ||
| import androidx.compose.foundation.layout.fillMaxWidth | ||
| import androidx.compose.foundation.layout.height | ||
| import androidx.compose.foundation.layout.padding | ||
| import androidx.compose.foundation.layout.width | ||
| import androidx.compose.foundation.lazy.LazyColumn | ||
| import androidx.compose.foundation.lazy.items | ||
| import androidx.compose.material3.CircularProgressIndicator | ||
| import androidx.compose.material3.MaterialTheme | ||
| import androidx.compose.material3.Surface | ||
| import androidx.compose.material3.Text | ||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.DisposableEffect | ||
| import androidx.compose.runtime.LaunchedEffect | ||
| import androidx.compose.runtime.getValue | ||
| import androidx.compose.runtime.mutableStateOf | ||
| import androidx.compose.runtime.remember | ||
| import androidx.compose.runtime.setValue | ||
| import androidx.compose.ui.Modifier | ||
| import androidx.compose.ui.platform.LocalConfiguration | ||
| import androidx.compose.ui.platform.LocalContext | ||
| import androidx.compose.ui.platform.LocalInspectionMode | ||
| import androidx.compose.ui.tooling.preview.Preview | ||
| import androidx.compose.ui.unit.dp | ||
| import com.example.jetpackcomposedemo.R | ||
| import com.google.android.gms.ads.AdListener | ||
| import com.google.android.gms.ads.AdRequest | ||
| import com.google.android.gms.ads.AdSize | ||
| import com.google.android.gms.ads.AdView | ||
| import com.google.android.gms.ads.LoadAdError | ||
| import com.google.android.gms.compose_util.BannerAd | ||
| import com.google.android.gms.example.jetpackcomposedemo.GoogleMobileAdsApplication.Companion.BANNER_AD_UNIT_ID | ||
| import com.google.android.gms.example.jetpackcomposedemo.GoogleMobileAdsApplication.Companion.TAG | ||
| import com.google.android.gms.example.jetpackcomposedemo.ui.theme.JetpackComposeDemoTheme | ||
| import kotlin.coroutines.resume | ||
| import kotlinx.coroutines.async | ||
| import kotlinx.coroutines.awaitAll | ||
| import kotlinx.coroutines.supervisorScope | ||
| import kotlinx.coroutines.suspendCancellableCoroutine | ||
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| @Composable | ||
| fun LazyBannerScreen(modifier: Modifier = Modifier) { | ||
| val context = LocalContext.current | ||
| val isPreviewMode = LocalInspectionMode.current | ||
| val deviceCurrentWidth = LocalConfiguration.current.screenWidthDp | ||
| val adsToLoad = 5 | ||
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| // Indicate whether the banner ads are currently being loaded. | ||
| var isLoadingAds by remember { mutableStateOf(true) } | ||
| var loadedAds by remember { mutableStateOf<List<AdView>>(emptyList()) } | ||
| val fillerText = loadFillerText(context) | ||
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| // Load ads when on launch of the composition. | ||
| LaunchedEffect(Unit) { | ||
| if (!isPreviewMode) { | ||
| loadedAds = loadBannerAds(context, adsToLoad, deviceCurrentWidth) | ||
| } | ||
| isLoadingAds = false | ||
| } | ||
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| // Display a loading indicator if ads are still being fetched. | ||
| if (isLoadingAds) { | ||
| CircularProgressIndicator(modifier = modifier.width(100.dp).height(100.dp)) | ||
| } else { | ||
| // Display a lazy list with loaded ads and filler content. | ||
| LazyColumn(verticalArrangement = Arrangement.spacedBy(8.dp)) { | ||
| items(loadedAds) { adView -> | ||
| Column { | ||
| BannerAd(adView, modifier.fillMaxWidth()) | ||
| // Display the filler content. | ||
| fillerText.forEach { content -> | ||
| Box( | ||
| modifier | ||
| .fillMaxWidth() | ||
| .background(MaterialTheme.colorScheme.primaryContainer) | ||
| .padding(8.dp) | ||
| ) { | ||
| Text( | ||
| text = content, | ||
| modifier.padding(8.dp), | ||
| style = MaterialTheme.typography.bodyMedium, | ||
| ) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| // Clean up the AdViews after use. | ||
| DisposableEffect(Unit) { onDispose { loadedAds.forEach { adView -> adView.destroy() } } } | ||
| } | ||
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| @Preview | ||
| @Composable | ||
| private fun LazyBannerScreenPreview() { | ||
| JetpackComposeDemoTheme { | ||
| Surface(color = MaterialTheme.colorScheme.background) { LazyBannerScreen() } | ||
| } | ||
| } | ||
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| private suspend fun loadBannerAd(context: Context, width: Int): Result<AdView> { | ||
| return suspendCancellableCoroutine { continuation -> | ||
| val adView = AdView(context) | ||
| adView.adUnitId = BANNER_AD_UNIT_ID | ||
| val adSize = AdSize.getCurrentOrientationInlineAdaptiveBannerAdSize(context, width) | ||
| adView.setAdSize(adSize) | ||
| adView.adListener = | ||
| object : AdListener() { | ||
| override fun onAdLoaded() { | ||
| Log.d(TAG, "Banner ad was loaded.") | ||
| continuation.resume(Result.success(adView)) | ||
| } | ||
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| override fun onAdFailedToLoad(error: LoadAdError) { | ||
| Log.e(TAG, "Banner ad failed to load: ${error.message}") | ||
| adView.destroy() | ||
| continuation.resume(Result.failure(Error(error.message))) | ||
| } | ||
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| override fun onAdImpression() { | ||
| Log.d(TAG, "Banner ad recorded an impression.") | ||
| } | ||
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| override fun onAdClicked() { | ||
| Log.d(TAG, "Banner ad was clicked.") | ||
| } | ||
| } | ||
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| continuation.invokeOnCancellation { | ||
| // When the coroutine is cancelled, clean up resources. | ||
| adView.destroy() | ||
| } | ||
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| val adRequest = AdRequest.Builder().build() | ||
| adView.loadAd(adRequest) | ||
| } | ||
| } | ||
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| private suspend fun loadBannerAds(context: Context, count: Int, width: Int): List<AdView> = | ||
| supervisorScope { | ||
| List(count) { | ||
| async { | ||
| try { | ||
| loadBannerAd(context, width).getOrNull() | ||
| } catch (e: Error) { | ||
| null | ||
| } | ||
| } | ||
| } | ||
| .awaitAll() | ||
| .filterNotNull() | ||
| } | ||
|
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| fun loadFillerText(context: Context): List<String> { | ||
| val fillerContent = context.resources.getStringArray(R.array.lazy_banner_filler_content) | ||
| return fillerContent.toList() | ||
| } |
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2 changes: 1 addition & 1 deletion
2
...example/jetpackcomposedemo/MainUiState.kt → ...le/jetpackcomposedemo/main/MainUiState.kt
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7 changes: 7 additions & 0 deletions
7
...p/src/main/java/com/google/android/gms/example/jetpackcomposedemo/main/NavDestinations.kt
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,7 @@ | ||
| package com.google.android.gms.example.jetpackcomposedemo.main | ||
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| enum class NavDestinations { | ||
| Home, | ||
| Banner, | ||
| LazyBanner, | ||
| } |
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