Question

借助Android的多窗口支持，如何检测状态栏是否可见？例如，当处于纵向方向时，如果我是顶级应用程序，则状态栏可能是可见的，但是当我在底部应用程序时，状态栏可能不可见。现在，我的观点在底部很有趣，因为我为状态栏腾出空间了。

Answer 1

假设您的意思是系统UI栏，即状态栏执行此操作：

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

Android多窗口支持：检测状态栏是否可见？

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