使用 Jetpack 卡片库在 Wear OS by Google 谷歌上创建自定义卡片
作者 / Jolanda Verhoef，开发者关系工程师
在 2019 年推出了卡片
https://blog.google/products/wear-os/tiles-wear-os-google/
Jetpack 卡片库
https://developer.android.google.cn/training/articles/wear-tiles
开始构建
dependencies { implementation "androidx.wear:wear-tiles:1.0.0-alpha01" debugImplementation "androidx.wear:wear-tiles-renderer:1.0.0-alpha01"}class MyTileService : TileProviderService() { override fun onTileRequest(requestParams: RequestReaders.TileRequest) = Futures.immediateFuture(Tile.builder() .setResourcesVersion("1") .setTimeline(Timeline.builder().addTimelineEntry( // For more information about timelines, see the docs TimelineEntry.builder().setLayout( Layout.builder().setRoot( Text.builder().setText("Hello world!") ) ) ) ).build())
override fun onResourcesRequest(requestParams: ResourcesRequest) = Futures.immediateFuture(Resources.builder() .setVersion("1") .build() )}TileProviderService
https://developer.android.google.cn/reference/androidx/wear/tiles/TileProviderService
这段代码有两个重要部分:
onTileRequest() 用于创建卡片布局。您将在此函数内编写大部分代码。您可以使用多个 TimelineEntry 实例来为不同的时间点渲染不同的布局。
onResourcesRequest() 则用于传递渲染卡片所需的所有资源。如果您决定添加图形，则可以在此处进行添加。
TimelineEntry
https://developer.android.google.cn/reference/androidx/wear/tiles/builders/TimelineBuilders.TimelineEntry不同的时间点
https://developer.android.google.cn/training/articles/wear-tiles#timebound-timeline
class MainActivity : ComponentActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) val rootLayout = findViewById<FrameLayout>(R.id.tile_container) TileManager( context = this, component = ComponentName(this, MyTileService::class.java), parentView = rootLayout ).create() }}新发布的指南
https://developer.android.google.cn/training/articles/wear-tiles卡片示例
https://github.com/android/wear-os-samples/tree/main/WearTilesKotlin
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