Android View与Compose互相调用实例探究

@Composable
fun ComposeContent() {
    Box(
        modifier = Modifier.fillMaxSize(),
        contentAlignment = Alignment.Center
    ) {
        Text(text = "Hello world!")
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">
    <androidx.compose.ui.platform.ComposeView
        android:id="@+id/compose_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
</LinearLayout>

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)
    val composeView : ComposeView = findViewById(R.id.compose_view)
    composeView.setContent {
        ComposeContent()
    }
}

@Composable
fun AndroidViewPage() {
    AndroidView(factory = {
        CalendarView(it)
    }, modifier = Modifier.fillMaxWidth(), update = {
        it.setOnDateChangeListener { view, year, month, day ->
            Toast.makeText(view.context, "${year}年${month}月${day}日", Toast.LENGTH_SHORT).show()
        }
    })
}

<uses-permission android:name="android.permission.INTERNET" />

@Composable
private fun rememberWebViewLifecycleObserver(webView: WebView): LifecycleEventObserver {
    return remember(webView) {
        LifecycleEventObserver { _, event ->
            run {
                when (event) {
                    Lifecycle.Event.ON_RESUME -> webView.onResume()
                    Lifecycle.Event.ON_PAUSE -> webView.onPause()
                    Lifecycle.Event.ON_DESTROY -> webView.destroy()
                    else -> Log.e("WebView", event.name)
                }
            }
        }
    }
}

@Composable
fun rememberWebViewWIthLifecycle(): WebView {
    val context = LocalContext.current
    val webView = remember {
        WebView(context)
    }
    val lifecycleObserver = rememberWebViewLifecycleObserver(webView)
    val lifecycle = LocalLifecycleOwner.current.lifecycle
    DisposableEffect(lifecycle) {
        lifecycle.addObserver(lifecycleObserver)
        onDispose {
            lifecycle.removeObserver(lifecycleObserver)
        }
    }
    return webView
}

@Composable
fun WebViewPage() {
    //创建有状态的WebView，并注册生命周期
    val webView = rememberWebViewWIthLifecycle()
    AndroidView(factory = {
        webView
    }, modifier = Modifier
        .fillMaxSize() //宽高占满父布局
        .background(Color.Red),
    update = {webView ->
        //设置支持JavaScript
        val webSettings = webView.settings
        webSettings.javaScriptEnabled = true
        webView.loadUrl("https://www.baidu.com")
    })
}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">
    <androidx.compose.ui.platform.ComposeView
        android:id="@+id/compose_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
</LinearLayout>

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)
    val composeView : ComposeView = findViewById(R.id.compose_view)
    composeView.setContent {
        ComposeContent()
    }
}
@Composable
fun ComposeContent() {
	//....
}

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <item type="id" name="my_calendar_view" />
</resources>

@Composable
fun ComposeContent() {
    AndroidView(factory = {
        //这里也可以通过 layoutInflater.inflate(R.layout.xxxxxx) 的方式返回原生View
        val calendarView = CalendarView(it)
        val keyboard = R.id.my_calendar_view
        Log.i(TAG,"my_calendar_view id:$keyboard")
        calendarView.id = keyboard
        calendarView
    }, modifier = Modifier.fillMaxWidth(), update = {
        it.setOnDateChangeListener { view, year, month, day ->
            Toast.makeText(view.context, "${year}年${month}月${day}日", Toast.LENGTH_SHORT).show()
        }
    })
}

window?.decorView?.post {
    val calendarViewId = R.id.my_calendar_view
    Log.i(TAG,"my_calendar_view id ===>:$calendarViewId")
    val calendarView = composeView.findViewById<CalendarView>(calendarViewId)
    Log.i(TAG,"calendarView:$calendarView")
    calendarView.setOnDateChangeListener { view, year, month, day ->
        Toast.makeText(view.context, "!!!! ${year}年${month}月${day}日", Toast.LENGTH_SHORT).show()
    }
}