相关疑难解决方法(0)

无法再查看 Jetpack Compose 预览。无法实例化一个或多个类 (ComposeViewAdapter)

我最近遇到一个错误,导致任何 Jetpack Compose 预览无法显示,如下所示:

Failed to instantiate one or more classes
The following classes could not be instantiated:
     -androidx.compose.ui.tooling.ComposeViewAdapter(Open Class, Show Exception, Clear Cache)

if this is an unexpected error you can also try to build the project, then manually refresh the layout

java.lang.NoClassDefFoundError: Could not initialize class androidx.customview.poolingcontainer.PoolingContainer
    at androidx.compose.ui.platform.ViewCompositionStrategy$DisposeOnDetachedFromWindowIfNotInPoolingContainer.installFor(ViewCompositionStrategy.android.kt:97)
    at androidx.compose.ui.platform.AbstractComposeView.<init>(ComposeView.android.kt:123)
    at androidx.compose.ui.platform.ComposeView.<init>(ComposeView.android.kt:392)
    at androidx.compose.ui.platform.ComposeView.<init>(ComposeView.android.kt:388)
    at androidx.compose.ui.tooling.ComposeViewAdapter.<init>(ComposeViewAdapter.kt:131)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
    at org.jetbrains.android.uipreview.ViewLoader.createNewInstance(ViewLoader.java:339)
    at org.jetbrains.android.uipreview.ViewLoader.loadClass(ViewLoader.java:176)
    at org.jetbrains.android.uipreview.ViewLoader.loadView(ViewLoader.java:136)
    at com.android.tools.idea.rendering.LayoutlibCallbackImpl.loadView(LayoutlibCallbackImpl.java:301)
    at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:417)
    at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:428) …
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android android-studio android-jetpack-compose android-jetpack-compose-preview

39
推荐指数
2
解决办法
1万
查看次数

具有 ViewModel 参数时,Jetpack Compose 预览不显示

我正在使用 Jetpack Compose,并注意到预览未显示。我读过这样的文章,但我的问题似乎有不同的根本原因。即使我为 compose 函数中的所有参数添加了默认值,如下所示:

@OptIn(ExperimentalLifecycleComposeApi::class)
@Composable
@ExperimentalFoundationApi
@Preview
fun VolumeSettingsScreen(
    speech: SpeechHelper = SpeechHelper(), // my class that converts text to speech
    viewModel: VolumeSettingsViewModel = hiltViewModel(), // using Hilt to inject ViewModels
    navController: NavHostController = rememberNavController() // Compose Navigation component
) {
    MyAppheme {
        Box(
             ...
        )
    }
}
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当我回滚一些更改时,我意识到无论它们是否注入了 Hilt,都不@Preview支持。viewModels

知道如何解决这个问题吗?

android kotlin android-jetpack-compose android-jetpack-compose-preview

6
推荐指数
1
解决办法
1692
查看次数