标签： 鸿蒙OS ComponentTreeObserver.WindowFocusUpdatedListener
后浪云鸿蒙OS教程：鸿蒙OS ComponentTreeObserver.WindowFocusUpdatedListener
ComponentTreeObserver.WindowFocusUpdatedListener
public static interface ComponentTreeObserver.WindowFocusUpdatedListener
当组件层次结构中窗口焦点……