Compose Wear OS 导航和旋转输入

Question

当我使用 ScalingLazyColumns 在两个 Scaffold 可组合项之间进行导航时，我无法在 Wear OS 撰写应用程序上使用旋转输入。

我正在使用简单的导航在两个脚手架可组合项之间导航（每个都带有scalinglazycolumn）。

        SwipeDismissableNavHost(
            //modifier = Modifier.background(Color.Black),
            navController = navController,
            startDestination = "main_screen"
        ) {
            composable("settings") {
                Settings(
                    coroutineScope = coroutineScope,
                    viewModel = viewModel,
                    context = context,
                    ...
                    )
            }
            composable("main_screen") {
                    TodayWeatherLayout(
                        coroutineScope = coroutineScope,
                        navController = navController,
                        context = context,
                        scope = scope,
                        viewModel = viewModel,
                        ...
                    )
                } 
}

在主屏幕上，我通过单击按钮输入设置

                onClick = {
                    navController.navigate("settings")
                }

这就是两个可组合屏幕的样子

    Scaffold(
        modifier = Modifier.fillMaxSize(),
        timeText = { TimeText(
            modifier = Modifier.scrollAway(listState, itemIndex = 0, offset = 80.dp),
            timeSource = TimeTextDefaults.timeSource(format),

            ) },
        positionIndicator = { PositionIndicator(scalingLazyListState = listState) }
    ){        

val focusRequester = remember { FocusRequester() }
LaunchedEffect(Unit){focusRequester.requestFocus()}

ScalingLazyColumn(
            modifier = Modifier
                .fillMaxSize()
                .onRotaryScrollEvent {
                    coroutineScope.launch {
                        listState.scrollBy(it.verticalScrollPixels * 2)
                        listState.animateScrollBy(0f)
                    }
                    true
                }
                .focusRequester(focusRequester)
                .focusable(),
            //anchorType = ScalingLazyListAnchorType.ItemStart,
            //autoCentering = AutoCenteringParams(itemIndex = 1),
            autoCentering = null,
            contentPadding = PaddingValues(start = 8.dp, end = 8.dp, top = 40.dp, bottom = 60.dp),
            state = listState,
        ){
.... [COLUMN ITEMS]
}
}

不幸的是，使用

旋转输入滚动仅在我进入应用程序（主屏幕）时才有效。当我进入“设置”时，我无法再通过旋转表冠滚动。 （旋转输入）。当我离开“设置”时，旋转输入在“主屏幕”中也不再起作用。

在两个屏幕中我都请求焦点

    val focusRequester = remember { FocusRequester() }
    LaunchedEffect(Unit){focusRequester.requestFocus()}

我的导航实现有问题吗？滑动滚动在“主屏幕”和“设置”中都可以正常工作

在logcat中我只能看到：

'Rotary事件已创建但未消耗'

Answer 1

解决了

LaunchedEffect(Unit) {
            lifecycleOwner.repeatOnLifecycle(state = Lifecycle.State.RESUMED) {
                try {
                    focusRequester.requestFocus()
                } catch (e: IllegalStateException) {
                    Log.w(TAG, "Focus Requester not working", e)
                }
            }}

还有

LocalView.current.viewTreeObserver.addOnWindowFocusChangeListener {
        if (it) {
            focusRequester.requestFocus()
        }
    }