将WindowCompat.setDecorFitsSystemWindows(window, false)添加到Activity onCreate中

override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        WindowCompat.setDecorFitsSystemWindows(window, false)
        ...
}

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然后在Scaffold中添加WindowInsets.navigationBars，以防止底部部分与导航栏重叠

Scaffold(
    contentWindowInsets = WindowInsets.navigationBars
)

型

只需在setContent之前写入这一行

window.setFlags(
        WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS,
        WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
    )

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首先在你的res >主题中删除动作栏;

<style name="Theme.app_android" 
parent="Theme.MaterialComponents.Light.NoActionBar">

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然后在MainActivity中调用您的composable，设置WindowCompat before，如下所示

class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
WindowCompat.setDecorFitsSystemWindows(window, false)
     setContent {
     App()
    }
  }
}

型
然后使用ProvideWindowInsets函数记住在SideEffect函数中调用的systemUiController，该函数将系统状态栏设置为透明

@Composable
fun App() {
    AppTheme {
        ProvideWindowInsets {
        val systemUiController = rememberSystemUiController()
        SideEffect {
            systemUiController.setSystemBarsColor(Color.Transparent, 
            darkIcons = false)
        }
        val navController = rememberNavController()
        val coroutineScope = rememberCoroutineScope()
        val navBackStackEntry by 
        navController.currentBackStackEntryAsState()
        val currentRoute = navBackStackEntry?.destination?.route
        Scaffold() { innerPadding ->
            Box(modifier = Modifier.padding(innerPadding)) {
                NavGraph(navController = navController)
               }
            }
          }
        }
      }

型
如果你从这里克隆合成样本https://github.com/android/compose-samples，他们会告诉你如何实现它。

在ActivityonCreate()上的setContent{}之前执行以下操作：

WindowCompat.setDecorFitsSystemWindows(window, false)

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