TabLayout not working properly, when scrolling right it works correctly sometime but after scrolling left it shows same data. I'm calling Same Fragment class nine times in SectionPagerAdapter and trying to change data dynamically in Recyclerview.
ViewPagerFragment Class
public class ViewPagerFragment extends Fragment {
private TabLayout tabLayout;
private ViewPager mViewPager;
private SectionsPagerAdapter mSectionsPagerAdapter;
// private ArrayList tabName;
private String[] tabName = {"bangladesh","international","economy" ,"opinion","sports","entertainment", "features","life-style","northamerica"};
public ViewPagerFragment() {
}
public ViewPagerFragment newInstance(String navigation) {
ViewPagerFragment fragment = new ViewPagerFragment();
Bundle args = new Bundle();
args.putString(Constants.FRAG_A, navigation);
fragment.setArguments(args);
return fragment;
}
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.test_fragment, container, false);
tabLayout = (TabLayout)view.findViewById(R.id.tabs);
mViewPager = (ViewPager)view.findViewById(R.id.container);
for(int i=0; i<=8; i++){
tabLayout.addTab(tabLayout.newTab().setText(tabName[i]));
}
tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE);
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
mSectionsPagerAdapter = new SectionsPagerAdapter(getChildFragmentManager(),tabLayout.getTabCount(),tabName);
mViewPager.setAdapter(mSectionsPagerAdapter);
mViewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
#Override
public void onTabSelected(TabLayout.Tab tab) {
mViewPager.setCurrentItem(tab.getPosition()); Log.v("pagerF ^&%&^^&: ",tabName[tab.getPosition()]);
getChildFragmentManager().beginTransaction().addToBackStack(null).commit();
}
#Override
public void onTabUnselected(TabLayout.Tab tab) {
}
#Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
return view;
}
#Override
public void onActivityCreated(#Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
// Note that we are passing childFragmentManager, not FragmentManager
mSectionsPagerAdapter = new SectionsPagerAdapter(getChildFragmentManager(),tabLayout.getTabCount(),tabName);
mViewPager.setAdapter(mSectionsPagerAdapter);
}
#Override
public void onResume() {
super.onResume();
if (mSectionsPagerAdapter!=null){
mSectionsPagerAdapter.notifyDataSetChanged();
}
}
SectionsPagerAdapter Class
public class SectionsPagerAdapter extends FragmentPagerAdapter {
int mNumOfTabs;
String[] tabName;
public SectionsPagerAdapter(FragmentManager fm, int NumOfTabs, String[] tabName) {
super(fm);
this.mNumOfTabs = NumOfTabs;
this.tabName=tabName;
}
#Override
public Fragment getItem(int position) {
HomeFragment comn = new HomeFragment();
return comn.newInstance(tabName[position-1]);
}
#Override
public int getCount() {
Log.v("Count*^&*^ ", String.valueOf(mNumOfTabs));
return mNumOfTabs;
}
}
HomeFragment Class
public class HomeFragment extends Fragment {
public static String fragmentName = "";
HorizontalAdapter adapterhor; VerticalAdapter adapterver;
ProthomAlo prothomAlo;
RecyclerView recyclerViewh, recyclerViewv;
public HomeFragment newInstance(String navigation) {
HomeFragment fragment = new HomeFragment();
Bundle args = new Bundle();
args.putString(Constants.FRAG_A, navigation);
fragment.setArguments(args);
fragmentName = navigation;
Log.v("home^^* :", navigation);
return fragment;
}
public HomeFragment() {
}
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_layout, container, false);
recyclerViewh = view.findViewById(R.id.recycler_View_ho);
recyclerViewv = view.findViewById(R.id.recycler_View_ver);
prothomAlo = new ProthomAlo();
prothomAlo.getProthomAloPage(fragmentName, new ProthomAlo.ApiCallback() {
#Override
public void onSuccess(ArrayList<SingleVertical> result) {
adapterhor = new HorizontalAdapter(getActivity(), result);
adapterver = new VerticalAdapter(getActivity(), result);
recyclerViewh.setAdapter(adapterhor); recyclerViewv.setAdapter(adapterver);
recyclerViewv.setLayoutManager(new LinearLayoutManager(getActivity()));
LinearLayoutManager layoutManager
= new LinearLayoutManager(getActivity(), LinearLayoutManager.HORIZONTAL, false);
recyclerViewh.setLayoutManager(layoutManager);
// Log.v("$^&^$$^&", fragmentName);
}
});
return view;
}
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
}
#Override
public void onActivityCreated(#Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
}
#Override
public void onStart() {
super.onStart();
}
#Override
public void onResume() {
super.onResume();
//adapterver.notifyDataSetChanged(); adapterhor.notifyDataSetChanged();
Log.v("home^^* :", fragmentName);
}
}
Related
I created two fragments: 'scheduleFragment' and 'clockFragment'. After setting up
public class ClockFragment extends AppCompatActivity implements View.OnClickListener {
private int notificationId = 1;
in MainActivity.java, the pageAdapter
scheduleFragment = new ScheduleFragment();
clockFragment = new ClockFragment();
tabLayout.setupWithViewPager(viewPager);
ViewPagerAdapter viewPagerAdapter = new ViewPagerAdapter(getSupportFragmentManager(), 0);
viewPagerAdapter.addFragment(clockFragment, "Clock");
viewPagerAdapter.addFragment(scheduleFragment, "Schedule");
viewPager.setAdapter(viewPagerAdapter);
creates an error that states I have to switch refactor the clockFragment into the scheduleFragment so one fragment is created.
I need these two fragments because, in the ClockFragment (tab), the clock must appear to users and on the ScheduleFragment (tab), the schedule of users is present. I am not sure how I can separate the two tabs without causing an error.
Some explanation over why this error occurs and a solution will be greatly appreciated.
public class MainActivity extends AppCompatActivity {
private Toolbar toolbar;
private ViewPager viewPager;
private TabLayout tabLayout;
private ScheduleFragment scheduleFragment;
private ClockFragment clockFragment;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ViewPager viewPager = findViewById(R.id.view_pager);
viewPager.setAdapter(new ViewPagerAdapter(getSupportFragmentManager()));
toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
viewPager = findViewById(R.id.view_pager);
tabLayout = findViewById(R.id.tab_layout);
scheduleFragment = new ScheduleFragment();
clockFragment = new ClockFragment();
tabLayout.setupWithViewPager(viewPager);
tabLayout.getTabAt(0).setIcon(R.drawable.ic_baseline_add_alarm_24);
tabLayout.getTabAt(1).setIcon(R.drawable.ic_baseline_assignment_turned_in_24);
}
private class ViewPagerAdapter extends FragmentPagerAdapter {
private List<Fragment> fragments = new ArrayList<>();
private List<String> fragmentTitle = new ArrayList<>();
public ViewPagerAdapter(#NonNull FragmentManager fm, int behavior) {
super(fm, behavior);
}
public ViewPagerAdapter(FragmentManager supportFragmentManager) {
super(supportFragmentManager);
}
public void addFragment(ClockFragment fragment, String title) {
fragments.add(fragment);
fragmentTitle.add(title);
}
#NonNull
#Override
public Fragment getItem(int position) {
return fragments.get(position);
}
#Override
public int getCount() {
return fragments.size();
}
#Nullable
#Override
public CharSequence getPageTitle(int position) {
return fragmentTitle.get(position);
}
}
}
First ClockFragment extends Activity which means it is not a fragment.
I will give you an example of how you should do things:
public class ChildFragment1 extends Fragment {
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
View rootView = inflater.inflate(R.layout.child_fragment_1_layout, container, false);
Button buttonInFragment1 = rootView.findViewById(R.id.button_1);
buttonInFragment1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(getContext(), "button in fragment 1", Toast.LENGTH_SHORT).show();
}
});
return rootView;
}
}
Now do Fragment 2:
public class ChildFragment2 extends Fragment {
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
View rootView = inflater.inflate(R.layout.child_fragment_1_layout, container, false);
Button buttonInFragment1 = rootView.findViewById(R.id.button_1);
buttonInFragment1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(getContext(), "button in fragment 2", Toast.LENGTH_SHORT).show();
}
});
return rootView;
}
}
Now add a new class for the adapter:
public class ViewPagerAdapter extends FragmentPagerAdapter {
public ViewPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
switch (position)
{
case 0:
return new ChildFragment1(); //ChildFragment1 at position 0
case 1:
return new ChildFragment2(); //ChildFragment2 at position 1
}
return null; //does not happen
}
#Override
public int getCount() {
return 2; //three fragments
}
}
And your MainActivity would look something like this:
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ViewPager viewPager = findViewById(R.id.view_pager);
viewPager.setAdapter(new ViewPagerAdapter(getSupportFragmentManager()));
}
}
I'm a beginner who learning Android basic course
I want to make 6 fragments that have same structure (only title, image, texts will be different) by using single fragment.
I tried this code but I can see only one fragment.
MainActivity.java
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
viewPager = (ViewPager) findViewById(R.id.fragment_container);
MoviePagerAdapter adapter = new MoviePagerAdapter(getSupportFragmentManager());
mainfragment = new MainFragment();
adapter.addItem(mainfragment);
viewPager.setAdapter(adapter);
viewPager.setOffscreenPageLimit(6);
}
ViewPager Adapter (in MainActivity)
class MoviePagerAdapter extends FragmentStatePagerAdapter {
public ArrayList<Fragment> items = new ArrayList<Fragment>();
#Override
public Fragment getItem(int position) {
return items.get(position);
}
public MoviePagerAdapter(#NonNull FragmentManager fm) {
super(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT);
}
public void addItem(Fragment item) {
items.add(item);
}
#Override
public int getCount() {
return items.size();
}
}
MainFragment.java
public class MainFragment extends androidx.fragment.app.Fragment {
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.main_frargment, container,
false);
//...
'i want to make 6fragments with datas below '
movieData = new MovieData("title1", "rate1", "grade1");
addData(movieData);
movieData = new MovieData("title2", "rate2", "grade2");
addData(movieData);
movieData = new MovieData("title3", "rate3", "grade3");
addData(movieData);
movieData = new MovieData("title4", "rate4", "grade4");
addData(movieData);
movieData = new MovieData("title5", "rate5", "grade5");
addData(movieData);
movieData = new MovieData("title6", "rate6", "grade6");
addData(movieData);
return rootView;
}
public void addData(MovieData movieData){
Bundle bundle = new Bundle();
bundle.putParcelable("data", movieData);
MainFragment mainFragment = new MainFragment();
mainFragment.setArguments(bundle);
title.setText(movieData.title);
reservation_rate.setText(movieData.getReservation_rate());
grade.setText(movieData.getGrade());
image.setImageResource(R.drawable.image6);
}
}
change your code like this:
public class MainActivity extends AppCompatActivity {
private MoviePagerAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
viewPager = (ViewPager) findViewById(R.id.fragment_container);
adapter = new MoviePagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(adapter);
viewPager.setOffscreenPageLimit(6);
for(int i =0;i<6;i++){
createFrag(i);
}
}
}
private void createFrag(int number) {
MainFragment fragment = new MainFragment();
Bundle args = new Bundle();
args.putInt("NUMBER",number);
fragment.setArguments(args);
adapter.addItem(fragment);
adapter.notifyDataSetChanged();
}
class MoviePagerAdapter extends FragmentStatePagerAdapter {
public ArrayList<Fragment> items = new ArrayList<Fragment>();
#Override
public Fragment getItem(int position) {
return items.get(position);
}
public MoviePagerAdapter(#NonNull FragmentManager fm) {
super(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT);
}
public void addItem(Fragment item) {
items.add(item);
}
#Override
public int getCount() {
return items.size();
}
}
and change your Fragment like this:
public class MainFragment extends androidx.fragment.app.Fragment {
//1st
private int number;
#Nullable
//this is variant 1 - with static Movie data
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable
ViewGroup container, #Nullable Bundle savedInstanceState) {
ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.main_frargment,
container,
false);
//...
//2d
assert getArguments() != null;
number = getArguments().getInt("NUMBER");
switch (number) {
case 0:
MmovieData movieData1 = new MovieData("title1", "rate1",
"grade1");
addData(movieData1);
break;
case 1:
MmovieData movieData2 = new MovieData("title2", "rate2",
"grade2");
addData(movieData2);
break;
//...
}
return rootView;
}
public void addData(MovieData movieData){
title.setText(movieData.title);
reservation_rate.setText(movieData.getReservation_rate());
grade.setText(movieData.getGrade());
image.setImageResource(R.drawable.image6);
}
}
and this is variant 2 ( with dynamic data and listener)
public class MainFragment extends androidx.fragment.app.Fragment {
//1st
private int number;
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable
ViewGroup container, #Nullable Bundle savedInstanceState) {
ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.main_frargment,
container,
false);
//...
//2d
assert getArguments() != null;
number = getArguments().getInt("NUMBER");
return rootView;
}
//some method of listener changed
public void dataChanged(MovieData movieData, int position){
if(number==position){
title.setText(movieData.title);
reservation_rate.setText(movieData.getReservation_rate());
grade.setText(movieData.getGrade());
image.setImageResource(R.drawable.image6);
}
}
I have 3 tabs each are sharing a single fragment. But this fragment contains a viewPager. So all the three tabs will have a UI with a viewPager and viewPager have three different fragments. After following the examples available I managed to implement Tab layout with single fragment. But when I tried to implement a viewPager inside this fragment I am facing issue. Tab is not scrolling smoothly and its not moving to third tab. I am also not able to see my viewPager fragment.
Main Fragment with tablayout implementation:
public class DashboardFragment extends android.support.v4.app.Fragment {
Activity mActivity;
private TabLayout tabLayout;
private ViewPager viewPager;
private static final String TAG = "DashboardFragment";
public DashboardFragment() {
}
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mActivity = getActivity();
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.dashboard_fragment, container, false);
tabLayout = (TabLayout)view.findViewById(R.id.tabs);
viewPager = (ViewPager)view.findViewById(R.id.viewpager);
tabLayout.addTab(tabLayout.newTab().setText("Yesterday"));
tabLayout.addTab(tabLayout.newTab().setText("Last Week"));
tabLayout.addTab(tabLayout.newTab().setText("This Month"));
setupViewPager(viewPager);
return view;
}
private void setupViewPager(ViewPager viewPager) {
DashboardTabPagerAdapter adapter = new DashboardTabPagerAdapter(((AppCompatActivity)getActivity()).getSupportFragmentManager(),tabLayout.getTabCount());
viewPager.setAdapter(adapter);
viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
#Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(TabLayout.Tab tab) {
}
#Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
}
}
DashboardPagerAdapter:
public class DashboardTabPagerAdapter extends FragmentStatePagerAdapter {
private int mNoOfTabs;
public DashboardTabPagerAdapter(FragmentManager fm, int tabCount) {
super(fm);
mNoOfTabs=tabCount;
}
#Override
public Fragment getItem(int position) {
DashboardYesterdayFragment fragment = new DashboardYesterdayFragment();
Bundle args = new Bundle();
switch (position) {
case 0:
args.putSerializable(AppConstants.TAB_DASHBOARD_TYPE, AppConstants.TAB_DASHBOARD_YESTERDAY);
break;
case 1:
args.putSerializable(AppConstants.TAB_DASHBOARD_TYPE, AppConstants.TAB_DASHBOARD_LAST_WEEK);
break;
case 2:
args.putSerializable(AppConstants.TAB_DASHBOARD_TYPE, AppConstants.TAB_DASHBOARD_THIS_MONTH);
break;
default:
return null;
}
fragment.setArguments(args);
return fragment;
}
#Override
public int getCount() {
return mNoOfTabs;
}
}
TabFragment which contains a childViewPager:
public class DashboardYesterdayFragment extends android.support.v4.app.Fragment {
private String title;
private Bundle bundle;
ViewPager mViewPager;
public DashboardYesterdayFragment(){
}
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
bundle = getArguments();
}
}
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.dashboard_yesterday_layout, container, false);
mViewPager = view.findViewById(R.id.vpPager);
setupViewPager(mViewPager);
return view;
}
private void setupViewPager(ViewPager viewPager) {
DashboardViewPagerAdapter adapter = new DashboardViewPagerAdapter( getChildFragmentManager(),bundle);
mViewPager.setAdapter(adapter);
mViewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
#Override
public void onPageSelected(int position) {
}
#Override
public void onPageScrollStateChanged(int state) {
}
});
mViewPager.setPageMargin(24);
}
ChildViewPagerAdapter:
public class DashboardViewPagerAdapter extends FragmentStatePagerAdapter {
private static int NUM_ITEMS = 3;
private Bundle bundle;
public DashboardViewPagerAdapter(FragmentManager fm, Bundle bundle) {
super(fm);
this.bundle=bundle;
}
#Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return IncidentsFragment.newInstance(bundle);
case 1:
return VehicleUtilizationFragment.newInstance(bundle);
case 2:
return FleetPerformanceFragment.newInstance(bundle);
default:
return null;
}
}
#Override
public int getCount() {
return NUM_ITEMS;
}
}
ChildViewPager first fragment:
public class IncidentsFragment extends Fragment {
private TextView mOverSpeeding,mGeoFence,mIdlingCase,mFuelFilling,mMosetIncidences, mLeastIncidences;
public static IncidentsFragment newInstance(Bundle bundle) {
IncidentsFragment fragmentFirst = new IncidentsFragment();
Bundle args = new Bundle();
args.putBundle("bundle", bundle);
fragmentFirst.setArguments(args);
return fragmentFirst;
}
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.incident_layout, container, false);
initViews(view);
return super.onCreateView(inflater, container, savedInstanceState);
}
private void initViews(View view) {
mOverSpeeding = (TextView)view.findViewById(R.id.over_speeding_value);
mGeoFence = (TextView)view.findViewById(R.id.geofence_value);
mIdlingCase = (TextView)view.findViewById(R.id.idling_value);
mFuelFilling = (TextView)view.findViewById(R.id.fuel_value);
mMosetIncidences = (TextView)view.findViewById(R.id.vehicle_reg_no);
mLeastIncidences = (TextView)view.findViewById(R.id.least_incidences_value);
}
}
I am confused what is going wrong.
Change this:
DashboardTabPagerAdapter adapter = new DashboardTabPagerAdapter(((AppCompatActivity)getActivity()).getSupportFragmentManager(),tabLayout.getTabCount());
to this:
DashboardTabPagerAdapter adapter = new DashboardTabPagerAdapter(((AppCompatActivity)getActivity()).getChildFragmentManager(),tabLayout.getTabCount());
I have one parent fragment where there is viewpager and tablayout.
Viewpager holds the fragment with different contents associated with it.
Every think works fine on swipe but whenever I tap on the different tabs of the tablayout, categoryId and categoryName of SwipableFragment is changed to adjacent tab's SwipableFragmet to the visible fragment.
Basically when I launch my FragmentAllNews (containing a ViewPager) it's shown the second fragment/page instead of the first and when I swipe to the second I see the third... In other words It's always shown the next or the previous fragment/page depending on the swipe direction (left or right).
Sorry For my bad english :(
here are my Fragments and FragmentStatePagerAdater class
###1 FragmentAllNews which holds the viewpager and tablayout
public class FragmentAllNews extends Fragment {
#Bind(R.id.tab_layout)
TabLayout tabLayout;
#Bind(R.id.all_news_viewpager)
ViewPager viewPager;
SessionManager sessionManager;
String categoryId;
String categoryName;
ArrayList<TabModel> tabs;
public static FragmentAllNews createNewInstance() {
FragmentAllNews fragmentAllNews = new FragmentAllNews();
return fragmentAllNews;
}
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
sessionManager = new SessionManager(getActivity());
tabs = sessionManager.getSwitchedNewsValue() == 0 ?
StaticStorage.getTabData(0) :
StaticStorage.getTabData(1);
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View fragmentView = inflater.inflate(R.layout.fragment_all_news, container, false);
ButterKnife.bind(this, fragmentView);
return fragmentView;
}
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
setViewPager(tabs);
setTabLayout();
}
private void setTabLayout() {
tabLayout.setupWithViewPager(viewPager);
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
#Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(TabLayout.Tab tab) {
}
#Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
}
private void setViewPager(ArrayList<TabModel> tabs) {
ArrayList<NewsFragmentModel> frags = new ArrayList<>();
for (int i = 0; i < tabs.size(); i++) {
if (i == 0) {
categoryId = tabs.get(i).cat_id;
categoryName = tabs.get(i).cat_name;
frags.add(new NewsFragmentModel(FragmentBreakingAndLatestNews.createNewInstance(categoryId, categoryName), categoryName));
} else {
categoryId = tabs.get(i).cat_id;
categoryName = tabs.get(i).cat_name;
frags.add(new NewsFragmentModel(SwipableFragment.createNewInstance(categoryId, categoryName), categoryName));
}
}
NewsPagerAdapter adapter = new NewsPagerAdapter(getChildFragmentManager(),frags);
viewPager.setAdapter(adapter);
}
#Override
public void onDestroyView() {
super.onDestroyView();
ButterKnife.unbind(this);
}
}
###2 SwipableFragment which the fragment attached to the viewpager
public class SwipableFragment extends Fragment implements NewsTitlesAdapter.RecyclerPositionListener {
#Bind(R.id.recycler_view)
RecyclerView recyclerView;
#Bind(R.id.progess)
ProgressBar progressBar;
#Bind(R.id.cat_id)
TextView categoryTextView;
ArrayList<NewsObj> newsObjs;
NewsTitlesAdapter newsTitlesAdapter;
SessionManager sessionManager;
private static String categoryId;
private static String categoryName;
public static SwipableFragment createNewInstance(String category_id, String category_name) {
SwipableFragment swipableFragment = new SwipableFragment();
Bundle box = new Bundle();
box.putString(StaticStorage.NEWS_CATEGORY_ID, category_id);
box.putString(StaticStorage.NEWS_CATEGORY, category_name);
swipableFragment.setArguments(box);
return swipableFragment;
}
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
sessionManager = new SessionManager(getActivity());
categoryId = getArguments().getString(StaticStorage.NEWS_CATEGORY_ID);
categoryName = getArguments().getString(StaticStorage.NEWS_CATEGORY);
newsObjs = (sessionManager.getSwitchedNewsValue() == 0) ?
NewsData.getNewsRepublica(getActivity()) :
NewsData.getNewsNagarik(getActivity(),categoryName);
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_swipable, container, false);
ButterKnife.bind(this, view);
return view;
}
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
Log.i("category", categoryId + " " + categoryName);
categoryTextView.setText(categoryId+" "+categoryName);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getContext());
recyclerView.setLayoutManager(linearLayoutManager);
recyclerView.setHasFixedSize(true);
recyclerView.setItemAnimator(new DefaultItemAnimator());
newsTitlesAdapter = new NewsTitlesAdapter(newsObjs);
newsTitlesAdapter.setOnRecyclerPositionListener(this);
recyclerView.setAdapter(newsTitlesAdapter);
recyclerView.addOnScrollListener(new EndlessScrollListener(linearLayoutManager) {
#Override
public void onLoadMore(int current_page) {
Log.i("categoryId", categoryId+" "+categoryName);
categoryTextView.setText(categoryId+" "+categoryName);
progressBar.setVisibility(View.VISIBLE);
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
ArrayList<NewsObj> moreNews = sessionManager.getSwitchedNewsValue() == 0 ?
NewsData.getNewsRepublica(getContext()) :
NewsData.getNewsNagarik(getContext(),categoryName);
int curSize = newsTitlesAdapter.getItemCount();
newsObjs.addAll(moreNews);
newsTitlesAdapter.notifyItemRangeInserted(curSize, newsObjs.size() - 1);
progressBar.setVisibility(View.GONE);
}
}, 5000);
}
});
}
#Override
public void onChildItemPositionListen(int position, View view) {
if (view.getId() == R.id.news_share_text_view) {
} else if (view.getId() == R.id.news_show_detail_text_view) {
} else {
Intent newsDetailIntent = new Intent(getActivity(), NewsDetailActivity.class);
NewsObj newsObj = newsObjs.get(position);
newsObj.setNewsCategory(categoryName);
newsDetailIntent.putExtra(NewsDetailActivity.NEWS_TITLE_EXTRA_STRING, newsObj);
startActivity(newsDetailIntent);
}
}
}
###3 NewsPagerAdapter is the subclass extended from FragmentStatePagerAdapter
public class NewsPagerAdapter extends FragmentStatePagerAdapter {
ArrayList<NewsFragmentModel> frags;
public NewsPagerAdapter(FragmentManager fm) {
super(fm);
}
public NewsPagerAdapter(FragmentManager fm,ArrayList<NewsFragmentModel> frags){
super(fm);
this.frags = frags;
}
#Override
public Fragment getItem(int position) {
return frags.get(position).getFrag();
}
#Override
public int getCount() {
return frags.size();
}
#Override
public CharSequence getPageTitle(int position) {
return frags.get(position).getTitle();
}
}
###4 NewsFragmentModel
public class NewsFragmentModel {
private Fragment frag;
private String title;
public NewsFragmentModel(Fragment frag, String title) {
this.frag = frag;
this.title = title;
}
public Fragment getFrag() {
return frag;
}
public void setFrag(Fragment frag) {
this.frag = frag;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
}
Am I doing any mistakes ? please help me.If you need more info please let me know. My final hope is Stackoverflow
I am trying to load data in two fragments hosted in a viewpager using cursorloaders. Everytime Ilaunch the activity only one fragment1 cursorloader loads data. Fragment2 loads when there is an orientation change and at this point fragment1 doesnt load data.The code for fragment1 is:
public class TransactionFragment extends Fragment
implements LoaderManager.LoaderCallbacks<Cursor>{
private static final int TRANSACTION_LOADER = 0;
private int walletId;
private RecyclerView transactionRecycler;
TransactionCursorAdapter adapter;
public TransactionFragment() {
// Required empty public constructor
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
walletId=WalletViewDashboardActivity.walletId;
getActivity().getSupportLoaderManager().initLoader(TRANSACTION_LOADER, null, this);
}
#Override
public void onResume() {
super.onResume();
getActivity().getSupportLoaderManager().restartLoader(TRANSACTION_LOADER, null, this);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView=inflater.inflate(R.layout.fragment_transaction, container, false);
transactionRecycler = (RecyclerView) rootView.findViewById(R.id.recycler_transactions);
transactionRecycler.setLayoutManager(new LinearLayoutManager(getActivity()));
return rootView;
}
#Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
String sTransactionSelection =
CarepayContract.InvoiceEntry.TABLE_NAME +
"." + CarepayContract.InvoiceEntry.COLUMN_WALLET_ID + " = ? ";
String[] sArguments = {String.valueOf(walletId)};
return new CursorLoader(
getActivity(),
CarepayContract.InvoiceEntry.CONTENT_URI,
null,
sTransactionSelection,
sArguments,
null
);
}
#Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
Log.e("Transactions", String.valueOf(data.getCount()));
adapter = new TransactionCursorAdapter(getActivity(), data);
transactionRecycler.setAdapter(adapter);
}
#Override
public void onLoaderReset(Loader<Cursor> loader) {
}}
The code for the second fragment is:
public class DependantFragment extends Fragment implements LoaderManager.LoaderCallbacks<Cursor> {
private RecyclerView recyclerView;
private static final int DEPENDANT_LOADER = 0;
private int walletId;
private DependantCursorAdapter adapter;
public DependantFragment() {}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
walletId=WalletViewDashboardActivity.walletId;
recyclerView.setAdapter(adapter);
getActivity().getSupportLoaderManager().initLoader(DEPENDANT_LOADER, null, this);
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public void onResume() {
super.onResume();
recyclerView.setAdapter(adapter);
getActivity().getSupportLoaderManager().restartLoader(DEPENDANT_LOADER, null, this);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_dependant, container, false);
recyclerView = (RecyclerView) rootView.findViewById(R.id.recycler_dependants);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
return rootView;
}
#Override
public android.support.v4.content.Loader<Cursor> onCreateLoader(int id, Bundle args) {
String sDependantSelection =
CarepayContract.UserEntry.TABLE_NAME +
"." + CarepayContract.UserEntry.COLUMN_TYPE + " = ? AND " + CarepayContract.UserEntry.TABLE_NAME +
"." + CarepayContract.UserEntry.COLUMN_WALLET_ID + " = ?";
String[] sArguments = {"1", String.valueOf(walletId)};
return new CursorLoader(
getActivity(),
CarepayContract.UserEntry.DEPENDANT_URI,
null,
sDependantSelection,
sArguments,
null
);
}
#Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
Log.e("Dependant", String.valueOf(data.getCount()));
adapter = new DependantCursorAdapter(getActivity(), data);
recyclerView.setAdapter(adapter);
}
#Override
public void onLoaderReset(Loader<Cursor> loader) {
} }
The code for the hosting activity is:
public class WalletViewDashboardActivity extends AppCompatActivity {
public static int walletId;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_wallet_view_dashboard);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
walletId = Integer.parseInt(getIntent().getStringExtra("wallet_id"));
TabLayout tabLayout = (TabLayout) findViewById(R.id.tab_layout);
tabLayout.addTab(tabLayout.newTab().setText("Transactions"));
tabLayout.addTab(tabLayout.newTab().setText("Dependants"));
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
final ViewPager viewPager = (ViewPager) findViewById(R.id.pager);
final WalletViewPagerAdapter adapter = new WalletViewPagerAdapter(getSupportFragmentManager(), tabLayout.getTabCount());
viewPager.setAdapter(adapter);
viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
#Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(TabLayout.Tab tab) {
}
#Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
public class WalletViewPagerAdapter extends FragmentStatePagerAdapter {
int mNumOfTabs;
public WalletViewPagerAdapter(FragmentManager fm, int NumOfTabs) {
super(fm);
this.mNumOfTabs = NumOfTabs;
}
#Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return new TransactionFragment();
case 1:
return new DependantFragment();
default:
return null;
}
}
#Override
public int getCount() {
return mNumOfTabs;
}
}}
private static final int TRANSACTION_LOADER = 0;
private static final int DEPENDANT_LOADER = 0;
You use getActivity(), so you use one loadermanager and set 0 as id for both loaders, just change one of constants to 1 and all will be fine