Fragment 嵌套 Fragment onActivityResult 无效的解决方法

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
FragmentManager fm = getSupportFragmentManager();
int index = requestCode >> 16;
if (index != 0) {
index--;
if (fm.getFragments() == null || index < 0
|| index >= fm.getFragments().size()) {
return;
}
Fragment frag = fm.getFragments().get(index);
if (frag == null) {
} else {
handleResult(frag, requestCode, resultCode, data);
}
return;
}

}

/**
* 递归调用，对所有子Fragement生效
*
* @param frag
* @param requestCode
* @param resultCode
* @param data
*/
private void handleResult(Fragment frag, int requestCode, int resultCode,
Intent data) {
frag.onActivityResult(requestCode & 0xffff, resultCode, data);
List<Fragment> frags = frag.getChildFragmentManager().getFragments();
if (frags != null) {
for (Fragment f : frags) {
if (f != null)
handleResult(f, requestCode, resultCode, data);
}
}
}