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[Jetcaster] Add Podcast image loading (#1347)
- Added the PotcastImage component - Added a ProgressIndicator when loading images [image_load.webm](https://github.com/android/compose-samples/assets/38935359/7e1cfdc8-8219-4957-8e3f-a7072ac4a47d)
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89
...r/designsystem/src/main/java/com/example/jetcaster/designsystem/component/PodcastImage.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| /* | ||
| * Copyright 2024 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. | ||
| */ | ||
|
|
||
| package com.example.jetcaster.designsystem.component | ||
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| import androidx.compose.foundation.Image | ||
| import androidx.compose.foundation.background | ||
| import androidx.compose.foundation.layout.Box | ||
| import androidx.compose.foundation.layout.fillMaxSize | ||
| import androidx.compose.foundation.layout.size | ||
| import androidx.compose.material3.CircularProgressIndicator | ||
| import androidx.compose.material3.MaterialTheme | ||
| 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.unit.dp | ||
| import coil.compose.AsyncImagePainter | ||
| import coil.compose.rememberAsyncImagePainter | ||
| import coil.request.ImageRequest | ||
|
|
||
| @Composable | ||
| fun PodcastImage( | ||
| podcastImageUrl: String, | ||
| contentDescription: String?, | ||
| modifier: Modifier = Modifier, | ||
| contentScale: ContentScale = ContentScale.Crop, | ||
| ) { | ||
| var imagePainterState by remember { | ||
| mutableStateOf<AsyncImagePainter.State>(AsyncImagePainter.State.Empty) | ||
| } | ||
|
|
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| val imageLoader = rememberAsyncImagePainter( | ||
| model = ImageRequest.Builder(LocalContext.current) | ||
| .data(podcastImageUrl) | ||
| .crossfade(true) | ||
| .build(), | ||
| contentScale = contentScale, | ||
| onState = { state -> imagePainterState = state } | ||
| ) | ||
|
|
||
| Box( | ||
| modifier = modifier, | ||
| contentAlignment = Alignment.Center | ||
| ) { | ||
| when (imagePainterState) { | ||
| is AsyncImagePainter.State.Loading -> { | ||
| CircularProgressIndicator( | ||
| modifier = Modifier | ||
| .size(48.dp) | ||
| .align(Alignment.Center) | ||
| ) | ||
| } | ||
|
|
||
| else -> { | ||
| Box( | ||
| modifier = Modifier | ||
| .fillMaxSize() | ||
| .background(MaterialTheme.colorScheme.surfaceContainerHigh) | ||
| ) | ||
| } | ||
| } | ||
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| Image( | ||
| painter = imageLoader, | ||
| contentDescription = contentDescription, | ||
| contentScale = contentScale, | ||
| modifier = modifier, | ||
| ) | ||
| } | ||
| } |