Enter PiP at correct times

Your app should not enter PiP mode in the following situations:

• If the video is stopped or paused.
• If you are on a different page of the app than the video player.

To control when your app enters PiP mode, add a variable that tracks the state of the video player using a mutableStateOf.

Toggle state based on if video is playing

To toggle the state based on if the video player is playing, add a listener on the video player. Toggle the state of your state variable based on if the player is playing or not:

player.addListener(object : Player.Listener {
    override fun onIsPlayingChanged(isPlaying: Boolean) {
        shouldEnterPipMode = isPlaying
    }
})
PictureInPictureSnippets.kt

Toggle state based on if player is released

When the player is released, set your state variable to false:

fun releasePlayer() {
    shouldEnterPipMode = false
}
PictureInPictureSnippets.kt

Use state to define if PiP mode is entered (pre-Android 12)

1. Since adding PiP pre-12 uses a DisposableEffect, you need to create a new variable by rememberUpdatedState with newValue set as your state variable. This will ensure that the updated version is used within the DisposableEffect.

2. In the lambda that defines the behavior when the OnUserLeaveHintListener is triggered, add an if statement with the state variable around the call to enterPictureInPictureMode():

   val currentShouldEnterPipMode by rememberUpdatedState(newValue = shouldEnterPipMode)
   if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O &&
       Build.VERSION.SDK_INT < Build.VERSION_CODES.S
   ) {
       val context = LocalContext.current
       DisposableEffect(context) {
           val onUserLeaveBehavior: () -> Unit = {
               if (currentShouldEnterPipMode) {
                   context.findActivity()
                       .enterPictureInPictureMode(PictureInPictureParams.Builder().build())
               }
           }
           context.findActivity().addOnUserLeaveHintListener(
               onUserLeaveBehavior
           )
           onDispose {
               context.findActivity().removeOnUserLeaveHintListener(
                   onUserLeaveBehavior
               )
           }
       }
   } else {
       Log.i("PiP info", "API does not support PiP")
   }
   PictureInPictureSnippets.kt

Use state to define if PiP mode is entered (post-Android 12)

Pass your state variable into setAutoEnterEnabled so that your app only enters PiP mode at the right time:

val pipModifier = modifier.onGloballyPositioned { layoutCoordinates ->
    val builder = PictureInPictureParams.Builder()

    // Add autoEnterEnabled for versions S and up
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
        builder.setAutoEnterEnabled(shouldEnterPipMode)
    }
    context.findActivity().setPictureInPictureParams(builder.build())
}

VideoPlayer(pipModifier)
PictureInPictureSnippets.kt

Use setSourceRectHint to implement a smooth animation

The setSourceRectHint API creates a smoother animation for entering PiP mode. In Android 12+, it also creates a smoother animation for exiting PiP mode. Add this API to the PiP builder to indicate the area of the activity that is visible following the transition into PiP.

1. Only add setSourceRectHint() to the builder if the state defines that the app should enter PiP mode. This avoids calculating sourceRect when the app does not need to enter PiP.
2. To set the sourceRect value, use the layoutCoordinates that are given from the onGloballyPositioned function on the modifier.
3. Call setSourceRectHint() on the builder and pass in the sourceRect variable.

val context = LocalContext.current

val pipModifier = modifier.onGloballyPositioned { layoutCoordinates ->
    val builder = PictureInPictureParams.Builder()
    if (shouldEnterPipMode) {
        val sourceRect = layoutCoordinates.boundsInWindow().toAndroidRectF().toRect()
        builder.setSourceRectHint(sourceRect)
    }

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
        builder.setAutoEnterEnabled(shouldEnterPipMode)
    }
    context.findActivity().setPictureInPictureParams(builder.build())
}

VideoPlayer(pipModifier)
PictureInPictureSnippets.kt