android设置页面顶部沉浸式布局并透明显示

    // 设置沉浸式布局标志位
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
        frameLayout.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
    } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
        frameLayout.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
    }

    // 设置状态栏背景颜色
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        Window window = getWindow();
        window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
        window.setStatusBarColor(Color.TRANSPARENT); // 将状态栏设置为透明
        window.setNavigationBarColor(Color.BLACK);   // 设置导航栏颜色
    }