如何配置系统栏和导航栏以获得沉浸式体验？

1. 隐藏系统栏和导航栏

使用下面的代码段可以隐藏系统栏和导航栏：

// 隐藏状态栏和导航栏
View decorView = getWindow().getDecorView();
int uiOptions = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
decorView.setSystemUiVisibility(uiOptions);

在您的Activity中将以上代码添加到onCreate()方法中。

2. 使系统栏和导航栏在滑动时显示和隐藏

您可以使用如下代码实现隐藏并使系统栏和导航栏出现在滑动时。

private static final int AUTO_HIDE_DELAY_MILLIS = 3000;
private static final int UI_ANIMATION_DELAY = 300;
private final Handler mHideHandler = new Handler();
private final Runnable mHideRunnable = new Runnable() {
    @Override
    public void run() {
        hide();
    }
};
private final Runnable mShowPart2Runnable = new Runnable() {
    @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
    @Override
    public void run() {
        // Delayed display of UI elements
        ActionBar actionBar = getSupportActionBar();
        if (actionBar != null) {
            actionBar.show();
        }
    }
};
private final Runnable mHidePart2Runnable = new Runnable() {
    @Override
    public void run() {
        // Delayed removal of status and navigation bar

        // Note that some of these constants are new as of API 16 (Jelly Bean)
        // and API 19 (KitKat). It is safe to use them, as they are inlined
        // at compile-time and do nothing on earlier devices.
        mContentView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE
                | View.SYSTEM_UI_FLAG_FULLSCREEN
                | View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                | View.SYSTEM_UI_FLAG_IMMERSIVE
                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
    }
};
private View mContentView;

private void