Android 多窗口支持 : Detecting if status bar is visible?

Question

借助 Android 的多窗口支持，我如何检测状态栏是否可见？例如，在纵向时，如果我是顶部应用程序，状态栏可能可见，但当我是底部应用程序时，状态栏将不可见。现在，我的 View 在底部时很有趣，因为我为不再存在的状态栏腾出了空间。

Answer 1

假设你的意思是系统UI栏，即状态栏这样做:

View decorView = getWindow().getDecorView();

decorView.setOnSystemUiVisibilityChangeListener (new  View.OnSystemUiVisibilityChangeListener() { 
@Override 
public void onSystemUiVisibilityChange(int visibility) {
    // Note that system bars will only be "visible" if none of the 
    // LOW_PROFILE, HIDE_NAVIGATION, or FULLSCREEN flags are set. 
    if ((visibility & View.SYSTEM_UI_FLAG_FULLSCREEN) == 0) {
        // TODO: The system bars are visible. Make any desired 
        // adjustments to your UI, such as showing the action bar or 
        // other navigational controls. 
    } else { 
        // TODO: The system bars are NOT visible. Make any desired 
        // adjustments to your UI, such as hiding the action bar or 
        // other navigational controls. 
    } 
} 

});

这直接来自文档: https://developer.android.com/training/system-ui/visibility.html