Android应用开发（38）全屏显示隐藏状态栏和导航栏

Android应用开发学习笔记------目录索引

    protected void onCreate(Bundle savedInstanceState) {

        /* 添加代码 */
        requestWindowFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);

        WindowManager.LayoutParams lp = getWindow().getAttributes();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
            lp.layoutInDisplayCutoutMode = WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES;
        }
        getWindow().setAttributes(lp);
        /* --- */

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
}

    public void onWindowFocusChanged(boolean hasFocus) {
        super.onWindowFocusChanged(hasFocus);
        if (hasFocus) {
            View decorView = getWindow().getDecorView();
            decorView.setSystemUiVisibility(
                    View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                            | View.SYSTEM_UI_FLAG_FULLSCREEN
                            | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
        }
    }

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