第一种
public void onAttach(Context context) {
super.onAttach(context);
try {
mListener = (SingleOptionsPicker.onListener) context;
mListener.OnListener();
}catch (ClassCastException e) {
throw new ClassCastException(context.toString()
+ " must implement SingleOptionsPicker.onListener");
}
第二种
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
OnListener listener = (OnListener) activity;
}
或是
@Override
public void onAttach(Context context) {
OnListener listener = (OnListener) activity;
}
都不行
如何解决接受接口回调