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I have following workflow in my code. I have fragment A which starts a new activity B using startActivityForResult(intent, requestCode). Activity B has a fragment say fragment C which contains a listview (its adapter has an arraylist) and an edittext below to add new values into the listview.

I intend to send data back to fragment A. I have implemented an interface in the fragment C which is called in onPause() method of the same fragment. 

@Override
public void onPause() {
    // TODO Auto-generated method stub
    OnSubtaskExitListener onSubtaskExitListener = (OnSubtaskExitListener) getSherlockActivity();
    onSubtaskExitListener.onExit(Subtasks);
    super.onPause();
}

Subtasks is the updated arraylist on adding new item from add button in edit text.

I have implemented this interface in activity B which contains the fragment C. 

@Override
public void onExit(ArrayList<HashMap<String, String>> subtasks) {
....
intent.putExtra("ResultArray", stringArray);
setResult(RESULT_OK, intent);
finish();

Note that startActivityForResult was called in fragment A. Therefore, setResult has been used.

The problem: In the onActivityResult(int requestCode, int resultCode, Intent data) of fragment A, Intent data is always null. I have used android.util.Log in the onExit method in activity B to see if data being sent in put extra is null e.g. Log.d("Array Result", stringArray[0].toString()); But onActivityResult() is always getting data null.

Please help me find the bug. Thanks :)

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私の知る限り、呼び出された後にアクティビティ結果を設定することはできませんonPause()。アクティビティの結果を設定するとonPause()、onStop()またはonDestroy()おそらく常に null が返されますonActivityResult()。

なぜメソッドを呼び出したいのかわかりませんがsetResult()、またはメソッドonPause()に移動できるかもしれません。これで問題が解決するはずです。onBackPressed()onKeyDown()

于 2013-03-29T22:16:08.417 に答える