在 Android 10 (API 29) 中隐藏状态栏并在应用程序中使用其空间

你需要在应用程序中边到边显示内容(Documentation reference)

Step 1:用法:WindowCompat.setDecorFitsSystemWindows(window, false)

这是确保应用程序边缘到边缘的主要步骤，也就是说，使用显示器的整个宽度和高度进行布局.使用WindowCompat.设置DecorfitsSystemWindows(window，false)以在系统栏后面布局应用程序，如以下代码示例所示:

Step 2:使用WindowInsetsControllerCompat隐藏状态栏:

    WindowInsetsControllerCompat(window, window.decorView).apply {
        // Hide the status bar
        hide(WindowInsetsCompat.Type.statusBars())
        // Allow showing the status bar with swiping from top to bottom
        systemBarsBehavior =
            WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
    }

Step 3:从步骤1开始，底部的活动内容将被底部导航栏遮挡；然后，您需要使用WindowInsetsListener将活动根布局的底部边距调整为导航栏的高度:

锅炉:

// root layout of your activity
val root = findViewById<ConstraintLayout>(R.id.root)
ViewCompat.setOnApplyWindowInsetsListener(
    root
) { view: View, windowInsets: WindowInsetsCompat ->
    val insets = windowInsets.getInsets(WindowInsetsCompat.Type.systemBars())
    view.layoutParams = (view.layoutParams as FrameLayout.LayoutParams).apply {
        // draw on top of the bottom navigation bar
        bottomMargin = insets.bottom
    }

    // Return CONSUMED if you don't want the window insets to keep being
    // passed down to descendant views.
    WindowInsetsCompat.CONSUMED
}

Java :

WindowInsetsControllerCompat windowInsetsCompat = new WindowInsetsControllerCompat(getWindow(), getWindow().getDecorView());

windowInsetsCompat.hide(WindowInsetsCompat.Type.statusBars());
windowInsetsCompat.setSystemBarsBehavior(WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE);

// root layout of your activity
ConstraintLayout root = findViewById(R.id.root);

ViewCompat.setOnApplyWindowInsetsListener(
        root
        , (view, windowInsets) -> {
            Insets insets = windowInsets.getInsets(WindowInsetsCompat.Type.systemBars());
            FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) view.getLayoutParams();
            params.bottomMargin = insets.bottom;
            return WindowInsetsCompat.CONSUMED;
        });

Step 4:最后，确保在应用程序的主题中允许绘制剪切区域:

<item name="android:windowLayoutInDisplayCutoutMode">always</item>