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Added in API level 1

Summary: Methods | [Expand All]

public static interface ViewTreeObserver.OnGlobalFocusChangeListener

android.view.ViewTreeObserver.OnGlobalFocusChangeListener

Known Indirect Subclasses

WebView

当视图树中的焦点状态更改时调用回调的接口定义。

公共方法(Public methods)
`abstract void`	`onGlobalFocusChanged(View oldFocus, View newFocus)` 在焦点在视图树中更改时调用的回调方法。

Added in API level 1

void onGlobalFocusChanged (View oldFocus, 
                View newFocus)

在焦点在视图树中更改时调用的回调方法。当视图树从触摸模式转换为非触摸模式时，oldFocus为空。当视图树从非触摸模式转换为触摸模式时，newFocus为null。当焦点在非触摸模式下改变（没有从或转换到触摸模式时），oldFocus或newFocus可以为空。

参数(Parameters)
`oldFocus`	`View`: The previously focused view, if any.
`newFocus`	`View`: The newly focused View, if any.