Hey everyone, I'm working with a device which has...

# compose

[masteramyx]

Hey everyone,

I'm working with a device which has a 2nd screen and uses Presentation class. Currently using legacy views and I was exploring updating those views to Compose.

I've tried different approaches for interop here, unsuccessfully.

The problem is ViewTreeLifecycleOwner not found from android.widget.LinearLayout

I don't believe my problem is an outdated library, I've come across many answers referring to appCompat, fragment-ktx, etc. versions. However the versions in my project are up-to-date.

Is there something unique about incorporating Compose UI content in a Presentation class like this?

[masteramyx]

XML:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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/compose_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>

Kotlin:

class PresentationView(val context: Context, display: Display) :
    Presentation(context, display) {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.initial).apply {
            findViewById<ComposeView>(R.id.compose_view).setContent {
                PresentationView()
            }
        }
    }
}

Error:

java.lang.IllegalStateException: ViewTreeLifecycleOwner not found from android.widget.LinearLayout{934d0e2 V.E...... ......I. 0,0-0,0}
                                                                                                    	at androidx.compose.ui.platform.WindowRecomposer_androidKt.createLifecycleAwareWindowRecomposer(WindowRecomposer.android.kt:349)
                                                                                                    	at androidx.compose.ui.platform.WindowRecomposer_androidKt.createLifecycleAwareWindowRecomposer$default(WindowRecomposer.android.kt:324)
                                                                                                    	at androidx.compose.ui.platform.WindowRecomposerFactory$Companion$LifecycleAware$1.createRecomposer(WindowRecomposer.android.kt:168)
                                                                                                    	at androidx.compose.ui.platform.WindowRecomposerPolicy.createAndInstallWindowRecomposer$ui_release(WindowRecomposer.android.kt:224)
                                                                                                    	at androidx.compose.ui.platform.WindowRecomposer_androidKt.getWindowRecomposer(WindowRecomposer.android.kt:299)
                                                                                                    	at androidx.compose.ui.platform.AbstractComposeView.resolveParentCompositionContext(ComposeView.android.kt:242)
                                                                                                    	at androidx.compose.ui.platform.AbstractComposeView.ensureCompositionCreated(ComposeView.android.kt:249)
                                                                                                    	at androidx.compose.ui.platform.AbstractComposeView.onAttachedToWindow(ComposeView.android.kt:281)
                                                                                                    	at android.view.View.dispatchAttachedToWindow(View.java:19553)
                                                                                                    	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.ViewRootImpl.performTraversals(ViewRootImpl.java:2028)
                                                                                                    	at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1721)
                                                                                                    	at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7598)
                                                                                                    	at android.view.Choreographer$CallbackRecord.run(Choreographer.java:966)
                                                                                                    	at android.view.Choreographer.doCallbacks(Choreographer.java:790)
                                                                                                    	at android.view.Choreographer.doFrame(Choreographer.java:725)
                                                                                                    	at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:951)
                                                                                                    	at android.os.Handler.handleCallback(Handler.java:883)
                                                                                                    	at android.os.Handler.dispatchMessage(Handler.java:100)
                                                                                                    	at android.os.Looper.loop(Looper.java:214)
                                                                                                    	at android.app.ActivityThread.main(ActivityThread.java:7356)
                                                                                                    	at java.lang.reflect.Method.invoke(Native Method)
                                                                                                    	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
                                                                                                    	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)

[Ian Lake]

Did you search for ViewTreeLifecycleOwner in this channel? There are a couple of threads about this, such as:
• https://kotlinlang.slack.com/archives/CJLTWPH7S/p1607795847192900
• https://kotlinlang.slack.com/archives/CJLTWPH7S/p1619646833068500?thread_ts=1619643434.059400&cid=CJLTWPH7S

[Ian Lake]

If you aren't tied to something that sets those owners already (e.g., a ComponentActivity or its subclasses or a DialogFragment ), then you need to set them yourself with whatever is the appropriate Lifecycle and SavedStateRegistry for your window