dialog全屏且显示透明状态栏

    Window dialogWindow = aDialog.getWindow();
    //全屏且显示透明状态栏
    dialogWindow.clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
    dialogWindow.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
            | View.SYSTEM_UI_FLAG_LAYOUT_STABLE);
    dialogWindow.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        dialogWindow.setStatusBarColor(Color.TRANSPARENT);
    }