在布局中使用ComposeView或使用BottomSheetDialog引发异常
在布局中使用ComposeView或使用BottomSheetDialog引发异常
提问于 2022-05-26 17:28:08
我有一个非组合视图，需要显示一个BottomSheetDialog。我想从根本上看：
myBottomSheetDialog = BottomSheetDialog(requireActivity(), R.style.Theme_Design_BottomSheetDialog)
val bottomSheetView = BottomsheetBinding.inflate(layoutInflater, null, false)
myBottomSheetDialog.setContentView(bottomSheetView.root)其中BottomSheetBinding视图是：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.compose.ui.platform.ComposeView
android:id="@+id/bottom_sheet_compose"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</androidx.compose.ui.platform.ComposeView>
</RelativeLayout>当我打开对话框时，会引发以下异常。
java.lang.IllegalStateException: ViewTreeLifecycleOwner not found from android.widget.FrameLayout{ee8d547 V.E...... ......I. 0,0-0,0 #7f0a00c1 app:id/container}
at androidx.compose.ui.platform.WindowRecomposer_androidKt.createLifecycleAwareViewTreeRecomposer(WindowRecomposer.android.kt:244)
at androidx.compose.ui.platform.WindowRecomposer_androidKt.access$createLifecycleAwareViewTreeRecomposer(WindowRecomposer.android.kt:1)
at androidx.compose.ui.platform.WindowRecomposerFactory$Companion$LifecycleAware$1.createRecomposer(WindowRecomposer.android.kt:99)
at androidx.compose.ui.platform.WindowRecomposerPolicy.createAndInstallWindowRecomposer$ui_release(WindowRecomposer.android.kt:155)
at androidx.compose.ui.platform.WindowRecomposer_androidKt.getWindowRecomposer(WindowRecomposer.android.kt:230)
at androidx.compose.ui.platform.AbstractComposeView.resolveParentCompositionContext(ComposeView.android.kt:244)
at androidx.compose.ui.platform.AbstractComposeView.ensureCompositionCreated(ComposeView.android.kt:251)
at androidx.compose.ui.platform.AbstractComposeView.onMeasure(ComposeView.android.kt:288出于几个原因，我不能让父视图首先组成。但是我想显示一个对话框，并使用compose作为该对话框中的内容。
回答 2
Stack Overflow用户
发布于 2022-06-21 04:41:12
在调用setContentView之前，必须首先声明组合策略：setViewCompositionStrategy(ViewCompositionStrategy.DisposeOnViewTreeLifecycleDestroyed)
Stack Overflow用户
发布于 2022-08-05 05:14:14
为了将可组合性用作任何窗口的内容，我们必须在视图树的根上设置视图树所有者。在大多数安卓主类中，它已经由google完成，但出于某种原因，他们忘记了BottomSheetDialog。
下面是解决方案，在调用setViewTreeOwners()之前调用BottomSheetDialog.setContentView()
private fun setViewTreeOwners() {
val activity = extractActivity(context) // if you have activity present nearby, then just use your activity here.
val decorView = window?.decorView
if (activity != null && decorView != null) {
ViewTreeLifecycleOwner.set(decorView, activity as? LifecycleOwner)
ViewTreeViewModelStoreOwner.set(decorView, activity as? ViewModelStoreOwner)
ViewTreeSavedStateRegistryOwner.set(decorView, activity as? SavedStateRegistryOwner)
}
}从上下文中提取活动的可选代码
private fun extractActivity(context: Context?): Activity? {
var currentContext = context
while (currentContext != null) {
if (currentContext is Activity) return currentContext
if (currentContext !is ContextWrapper) break
currentContext = currentContext.baseContext
}
return null
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/72395779
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