我有奇怪的问题 我使用框架布局，在里面我使用像下面的一些片段和底部栏处理片段
现在在其中一个片段我使用ViewPager和TabLayout像下面
我的问题是何时将片段从首先变为第三 第一次正确改变但是 第二次它无法正常工作，有些事情发生在下面
这是第三个片段加载（Just Load ViewPager）的代码
public class Social extends Fragment {
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
private TabLayout tabLayout;
private BestMonth b,b1;
private ViewPager viewPager;
private OnFragmentInteractionListener mListener;
public Social() {
// Required empty public constructor
b= new BestMonth();
b1= new BestMonth();
}
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* @param param1 Parameter 1.
* @param param2 Parameter 2.
* @return A new instance of fragment Social.
*/
// TODO: Rename and change types and number of parameters
public static Social newInstance(String param1, String param2) {
Social fragment = new Social();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view= inflater.inflate(R.layout.fragment_social, container, false);
viewPager = (ViewPager)view.findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout)view.findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
setupTabIcons();
return view;
}
// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
if (mListener != null) {
mListener.onFragmentInteraction(uri);
}
}
private void setupTabIcons() {
TextView tabOne = (TextView) LayoutInflater.from(getActivity()).inflate(R.layout.custom_tab, null);
tabOne.setText("برترین های ماه");
tabLayout.getTabAt(0).setCustomView(tabOne);
TextView tabTwo = (TextView) LayoutInflater.from(getActivity()).inflate(R.layout.custom_tab, null);
tabTwo.setText("محمبوب ترین ها");
tabLayout.getTabAt(1).setCustomView(tabTwo);
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getActivity().getSupportFragmentManager());
adapter.addFragment(b, "بهترین ها");
adapter.addFragment(b1, "برترین ها");
viewPager.setAdapter(adapter);
}
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
/**
* This interface must be implemented by activities that contain this
* fragment to allow an interaction in this fragment to be communicated
* to the activity and potentially other fragments contained in that
* activity.
* <p>
* See the Android Training lesson <a href=
* "http://developer.android.com/training/basics/fragments/communicating.html"
* >Communicating with Other Fragments</a> for more information.
*/
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
void onFragmentInteraction(Uri uri);
}
}
此片段加载ViewPager内部第三片段的内容
public class BestMonth extends Fragment {
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
private FloatingActionButton floatingActionButton;
private List<SocialInsClass> movieList = new ArrayList<>();
private RecyclerView recyclerView;
private PostAdapter mAdapter;
private OnFragmentInteractionListener mListener;
public BestMonth() {
// Required empty public constructor
}
// TODO: Rename and change types and number of parameters
public static BestMonth newInstance(String param1, String param2) {
BestMonth fragment = new BestMonth();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_best_month, container, false);
view = Init(view);
return view;
}
private void prepareMovieData() {
movieList.clear();
SocialInsClass movie = new SocialInsClass("آرش", "https://ig-s-b-a.akamaihd.net/hphotos-ak-xpa1/t51.2885-19/s150x150/17267780_1886609681623949_4740572605386326016_a.jpg", "گل من", "http://nargil.ir/plant/images/pic/978/Armeria%20Maritima712.jpg");
movieList.add(movie);
movie = new SocialInsClass("راضیه", "https://ig-s-c-a.akamaihd.net/hphotos-ak-xpa1/t51.2885-19/14134653_740842746053754_866503745_a.jpg", " قابل شما رو ندار", "http://nargil.ir/plant/images/pic/978/Armeria%20Maritima308.jpg");
movieList.add(movie);
movie = new SocialInsClass("یگانه", "https://ig-s-a-a.akamaihd.net/hphotos-ak-xpa1/t51.2885-19/s150x150/17663339_736255433209640_3627796035541139456_a.jpg", "گل دون منزل من", "http://nargil.ir/plant/images/pic/978/Armeria%20Maritima953.jpg");
movieList.add(movie);
mAdapter.notifyDataSetChanged();
}
private View Init(View view) {
recyclerView = (RecyclerView) view.findViewById(R.id.recycler_views);
floatingActionButton= (FloatingActionButton) view.findViewById(R.id.post);
floatingActionButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
startActivity(new Intent(getActivity(), SendPost.class));
}
});
mAdapter = new PostAdapter(movieList, getActivity());
prepareMovieData();
RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getActivity());
recyclerView.setLayoutManager(mLayoutManager);
recyclerView.setItemAnimator(new DefaultItemAnimator());
recyclerView.setAdapter(mAdapter);
return view;
}
// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
if (mListener != null) {
mListener.onFragmentInteraction(uri);
}
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
void onFragmentInteraction(Uri uri);
}
}
非常感谢您的指南
：）
