CODEWITHSUNDEEP
androidandroid-jetpack-compose
Yannick
Yannick

Reputation: 5861

Keyboard with Jetpack Compose was broken by Compose beta-01 (ViewTreeLifecycleOwner not found from DecorView)

This is related to this question

As described here I was able to create a keyboard with Jetpack Compose. Now after I upgrade the project from alpha-11 to alpha-12 the code broke (and is still broken in beta-01) and I get the following error whenever I try to open the keyboard:

 java.lang.IllegalStateException: ViewTreeLifecycleOwner not found from DecorView@aaf805f[InputMethod]
        at androidx.compose.ui.platform.WindowRecomposer_androidKt.createLifecycleAwareViewTreeRecomposer(WindowRecomposer.android.kt:214)
        at androidx.compose.ui.platform.WindowRecomposer_androidKt.access$createLifecycleAwareViewTreeRecomposer(WindowRecomposer.android.kt:1)
        at androidx.compose.ui.platform.WindowRecomposerFactory$Companion$LifecycleAware$1.createRecomposer(WindowRecomposer.android.kt:98)
        at androidx.compose.ui.platform.WindowRecomposerPolicy.createAndInstallWindowRecomposer$ui_release(WindowRecomposer.android.kt:151)
        at androidx.compose.ui.platform.WindowRecomposer_androidKt.getWindowRecomposer(WindowRecomposer.android.kt:199)
        at androidx.compose.ui.platform.AbstractComposeView.ensureCompositionCreated(ComposeView.android.kt:176)
        at androidx.compose.ui.platform.AbstractComposeView.onAttachedToWindow(ComposeView.android.kt:207)
        at android.view.View.dispatchAttachedToWindow(View.java:20105)
        at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3430)
        at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3437)
        at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3437)
        at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3437)
        at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3437)
        at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3437)
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2052)
        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1745)
        at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7768)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:967)
        at android.view.Choreographer.doCallbacks(Choreographer.java:791)
        at android.view.Choreographer.doFrame(Choreographer.java:726)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:952)
        at android.os.Handler.handleCallback(Handler.java:883)
        at android.os.Handler.dispatchMessage(Handler.java:100)
        at android.os.Looper.loop(Looper.java:214)
        at android.app.ActivityThread.main(ActivityThread.java:7356)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:491)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:940)

That's very weird because I have set the ViewTreeLifecycleOwner here and worked perfectly fine in previous versions of compose until alpha-12

The error gives me no idea of what's broken and what I should change. Maybe you can help me.

Here you can find all code for a reproducible example

Upvotes: 3

Views: 1744

Answers (1)

ianhanniballake
ianhanniballake

Reputation: 199795

The error message says:

ViewTreeLifecycleOwner not found from DecorView@aaf805f[InputMethod]

Compose looks for a ViewTreeLifecycleOwner set on the DecorView of your whole Window, not the one set on your View itself.

Therefore instead of setting the ViewTrees on the ComposeKeyboardView you return, instead use the InputMethodService API of getWindow() with getDecorView() to get the DecorView of your window.

override fun onCreateInputView(): View {
    val view = ComposeKeyboardView(this)
    window?.window?.decorView?.let { decorView ->
        ViewTreeLifecycleOwner.set(decorView, this)
        ViewTreeViewModelStoreOwner.set(decorView, this)
        ViewTreeSavedStateRegistryOwner.set(decorView, this)
    }
    return view
}

Upvotes: 7

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