android - SupportPlaceAutocompleteFragment 的 OnPlaceSelectedListener 未在 ViewPager 内触发

Question

我的应用程序有一个 viewPager 和 4 个 fragment 。在一个 fragment 中，我添加了一个 google SupportPlaceAutocompleteFragment 和

 public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.area_swipe_fragment, container, false);



    SupportPlaceAutocompleteFragment autocompleteFragment = (SupportPlaceAutocompleteFragment)
            getChildFragmentManager().findFragmentById(R.id.place_autocomplete_fragment);

    autocompleteFragment.setOnPlaceSelectedListener(new PlaceSelectionListener() {
        @Override
        public void onPlaceSelected(Place place) {
            Toast.makeText(ctx, "do something", Toast.LENGTH_SHORT).show();
        }

        @Override
        public void onError(Status status) {
        }
    });






    return view;
}

我的问题是 onPlaceSelectedListener 从未触发，我无法获得所选地点的结果。取而代之的是被放置在第二个 fragment 中的 onActivityResults() 触发。我尝试在第一个 fragment 中使用 onActivityResults() 但它没有被触发，总是在第二个 fragment 中执行。

有什么想法吗？

Answer 1

来自 the docs :

If your fragment is nested within another fragment, your app must also forward onActivityResult() calls to the containing fragment, as shown in the following snippet:

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    autocompleteFragment.onActivityResult(requestCode, resultCode, data);
}

也许这就是解决方案。