调用notifyDataSetChanged不会触发SimpleCursorAdapter的onContentChanged事件
我有这样的场景
onResume 活动:
@Override
protected void onResume() {
if (adapter1!=null) adapter1.notifyDataSetChanged();
if (adapter2!=null) adapter2.notifyDataSetChanged();
if (adapter3!=null) adapter3.notifyDataSetChanged();
super.onResume();
}
适配器已定义为:
public class ListCursorAdapter extends SimpleCursorAdapter {
Cursor c;
/* (non-Javadoc)
* @see android.widget.CursorAdapter#onContentChanged()
*/
@Override
protected void onContentChanged() {
// this is not called
if (c!=null) c.requery();
super.onContentChanged();
}
}
尽管发出了 onResume 和对适配器的调用,但 onContentChanged 事件未触发。怎么了?
I have this scenario
onResume of an activity:
@Override
protected void onResume() {
if (adapter1!=null) adapter1.notifyDataSetChanged();
if (adapter2!=null) adapter2.notifyDataSetChanged();
if (adapter3!=null) adapter3.notifyDataSetChanged();
super.onResume();
}
Adapter has been defined as:
public class ListCursorAdapter extends SimpleCursorAdapter {
Cursor c;
/* (non-Javadoc)
* @see android.widget.CursorAdapter#onContentChanged()
*/
@Override
protected void onContentChanged() {
// this is not called
if (c!=null) c.requery();
super.onContentChanged();
}
}
And the onContentChanged event is not fired, although the onResume and the call to the adapter is issued. What is wrong?
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当光标上的 ContentObserver 收到更改通知。
The onContentChanged method will be called when the ContentObserver on the cursor receives a change notification.