一般View收到ACTION_DRAG_STARTED的事件后,都会在整个DragEvent事件结束时收到ACTION_DRAG_ENDED事件,除非,在拖放事件结束时,次View不可见。 ACTION_DRAG_ENTERED 当Drag操作进入View的边界时,就会发出此事件。 如果一个View接收Drag操作,它就会在当它(这个View)成为Drag的目标时,改变样子(View发生了变化),以此来响应...
Returns true for an DragEvent#ACTION_DRAG_STARTED ACTION_DRAG_STARTED event Calls #performReceiveContent for an DragEvent#ACTION_DROP ACTION_DROP event Returns true for an DragEvent#ACTION_DROP ACTION_DROP event if the OnReceiveContentListener consumed some or all of the content Java documentati...
ACTION_DRAG_STARTED getResult() Constant Value:4 (0x00000004) public static final intACTION_DRAG_ENTERED Added inAPI level 11 Action constant returned bygetAction(): Signals to a View that the drag point has entered the bounding box of the View. ...
importandroid.view.DragEvent;//导入依赖的package包/类privatebooleanhandleDragEvent(finalView v,finalDragEventevent){switch(event.getAction()) {caseDragEvent.ACTION_DRAG_STARTED:caseDragEvent.ACTION_DRAG_ENTERED:caseDragEvent.ACTION_DRAG_LOCATION:caseDragEvent.ACTION_DRAG_EXITED:caseDragEvent.ACTION_DRAG...
int ACTION_DRAG_STARTED 由getAction()返回的操作常量:表示拖放操作的开始。 如果视图可以接受放置, true从其onDragEvent()处理程序方法或OnDragListener.onDrag()侦听器返回true。 onDragEvent()或onDrag()方法通常会检查来自getClipDescription()的元数据,以确定它们是否可以接受包含在此拖动中的数据。 对于不表示数...
int ACTION_DRAG_STARTED 由getAction()返回的操作常量:表示拖放操作的开始。 如果视图可以接受放置, true从其onDragEvent()处理程序方法或OnDragListener.onDrag()侦听器返回true。 onDragEvent()或onDrag()方法通常会检查来自getClipDescription()的元数据,以确定它们是否可以接受包含在此拖动中的数据。 对于不表示数...
String actionName = (action == DragEvent.ACTION_DRAG_STARTED) ?"DRAG_STARTED": (action == DragEvent.ACTION_DRAG_LOCATION) ?"DRAG_LOCATION": (action == DragEvent.ACTION_DRAG_ENDED) ?"DRAG_ENDED": (action == DragEvent.ACTION_DROP) ?"DROP":"UNKNOWN ACTION #"+ action; ...
在拖拽事件开始和结束时,我们可以通过DragEvent的getAction方法来获取拖拽事件的类型,并进行相应的处理。 caseDragEvent.ACTION_DRAG_STARTED:// 拖拽事件开始时的处理// 获取被拖拽的视图ViewdraggedView=(View)event.getLocalState();// 设置被拖拽的视图为半透明draggedView.setAlpha(0.5f);break;caseDragEvent.ACT...
Create DragAndDropPermissions object bound to this activity and controlling the access permissions for content URIs associated with the DragEvent.
OnLocalVoiceInteractionStarted OnLocalVoiceInteractionStopped OnLowMemory OnMenuItemSelected OnMenuOpened OnMultiWindowModeChanged OnNavigateUp OnNavigateUpFromChild OnNewIntent OnOptionsItemSelected OnOptionsMenuClosed OnPanelClosed OnPause OnPerformDirectAction OnPictureInPictureModeChanged OnPictureInPictureRequested ...