I made a quiz application where I display my Question using a Fragment, and using ViewPager. The Question is taken from SQLite, and here I am confused: If I have 10 questions, then I have to use 10 fragments. How can I use 1 Fragment to hold all questions?
Is there an idea for this?
MainActivity:
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private int mFragmentIndex = 0;
private ViewPager viewPager;
private Button back, next;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
viewPager = findViewById(R.id.view_pager);
setupViewPager(viewPager);
back = findViewById(R.id.buttonBack);
next = findViewById(R.id.buttonNext);
back.setOnClickListener(this);
next.setOnClickListener(this);
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFrag(new Question1(), "Question1");
adapter.addFrag(new Question2(), "Question2");
adapter.addFrag(new Question3(), "Question3");
viewPager.setOffscreenPageLimit(adapter.getCount());
viewPager.setAdapter(adapter);
}
#Override
public void onClick(View view) {
if (view == back) {
mfragmentIndex--;
viewPager.setCurrentItem(mFragmentIndex);
} else if(view == next) {
mfragmentIndex++;
viewPager.setCurrentItem(mFragmentIndex);
}
}
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitle = new ArrayList<>();
public ViewPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
#Override
public int getCount() {
return mFragmentList.size();
}
public void addFrag(Fragment fragment,String title){
mFragmentList.add(fragment);
mFragmentTitle.add(title);
}
#Nullable
#Override
public CharSequence getPageTitle(int position) {
return super.getPageTitle(position);
}
}
}
My Fragment, Question1:
public class Question1 extends Fragment {
private List<Question> questionsList;
private Question currentQuestion;
private TextView txtQuestion, tvNoOfQs;
private RadioButton rbtnA, rbtnB, rbtnC, rbtnD;
private int obtainedScore = 0;
private int questionId = 0;
private int answeredQsNo = 0;
ArrayList<String> myAnsList;
public Question1() {
// Required empty public constructor
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
final DBAdapter dbAdapter = new DBAdapter(getContext());
questionsList = dbAdapter.getAllQuestions();
currentQuestion = questionsList.get(questionId);
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_question1, container, false);
final RadioGroup grp = (RadioGroup)view.findViewById(R.id.radioGroup1);
tvNoOfQs = (TextView)view.findViewById(R.id.tvNumberOfQuestions);
txtQuestion = (TextView)view.findViewById(R.id.tvQuestion);
rbtnA = (RadioButton)view.findViewById(R.id.radio0);
rbtnB = (RadioButton)view.findViewById(R.id.radio1);
rbtnC = (RadioButton)view.findViewById(R.id.radio2);
rbtnD = (RadioButton)view.findViewById(R.id.radio3);
setPertanyaan();
myAnsList = new ArrayList<String>();
return view;
}
private void setPertanyaan() {
rbtnA.setChecked(false);
rbtnB.setChecked(false);
rbtnC.setChecked(false);
rbtnD.setChecked(false);
answeredQsNo = questionId+1;
tvNoOfQs.setText(+answeredQsNo+"/"+questionsList.size());
txtQuestion.setText(currentQuestion.getQUESTION());
rbtnA.setText(currentQuestion.getOptionA());
rbtnB.setText(currentQuestion.getOptionB());
rbtnC.setText(currentQuestion.getOptionC());
rbtnD.setText(currentQuestion.getOptionD());
questionId++;
}
}
I'd recommend using the Fragment's arguments to pass in the question ID. You already have an abstraction around a Question -- it appears that the only thing that really changes here is the question ID.
For example, you would have just a QuestionFragment which is responsible for displaying any given Question:
public class QuestionFragment extends Fragment {
private static final String ARG_QUESTION_ID = "question_id";
public static QuestionFragment newInstance(String questionId) {
final QuestionFragment fragment = new QuestionFragment();
final Bundle args = new Bundle();
args.putString(ARG_QUESTION_ID, questionId);
fragment.setArguments(args);
return fragment;
}
#Override
public View onCreateView(
LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
final String questionId = getArguments().getString(questionId);
final DBAdapter dbAdapter = new DBAdapter(getContext());
questionsList = dbAdapter.getAllQuestions();
currentQuestion = questionsList.get(questionId);
// ...
return view;
}
}
Then, when setting up your ViewPager, just provide the question ID to each instance as you create it:
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFrag(QuestionFragment.newInstance(0), "Question1"));
adapter.addFrag(QuestionFragment.newInstance(1), "Question2"));
adapter.addFrag(QuestionFragment.newInstance(2), "Question3"));
viewPager.setOffscreenPageLimit(adapter.getCount());
viewPager.setAdapter(adapter);
}
Related
Problem:
I'm trying to open a custom dialog after pressing a button in my tabbed fragment.
It's seems like my MainActivity activity is sent to the dialog while i want my tabbed fragment(GroupFragment) to be sent so i can change the editText(for now) in this fragment.
Code:
public class GroupFragment extends Fragment implements AddGroupDialog.AddGroupDialogListener {
private Button addGroupButton;
private TextView textViewNoGroups;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_group, container, false);
addGroupButton = view.findViewById(R.id.addGroupButton);
textViewNoGroups = view.findViewById(R.id.textViewNoGroups);
addGroupButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
addNewGroupDialog();
}
});
scaleAnimation(addGroupButton);
return view;
}
private void scaleAnimation(View v){
Animator scale = ObjectAnimator.ofPropertyValuesHolder(v,
PropertyValuesHolder.ofFloat(View.SCALE_X, 0, 1.2f, 1),
PropertyValuesHolder.ofFloat(View.SCALE_Y, 0, 1.2f, 1)
);
scale.setDuration(600);
scale.start();
}
private void addNewGroupDialog(){
AddGroupDialog dialog = new AddGroupDialog();
assert getFragmentManager() != null;
dialog.show(getFragmentManager(), "add new group dialog");
}
#Override
public void applyString(String groupName) {
textViewNoGroups.setText(groupName);
}
}
public class AddGroupDialog extends AppCompatDialogFragment {
private EditText editTextGroupName;
private AddGroupDialogListener listener;
#NonNull
#Override
public Dialog onCreateDialog(#Nullable Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
LayoutInflater inflater = getActivity().getLayoutInflater();
View view = inflater.inflate(R.layout.layout_add_new_group_dialog, null);
builder.setView(view)
.setTitle("")
.setPositiveButton(R.string.confirm, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
String groupName = editTextGroupName.getText().toString();
listener.applyString(groupName);
}
});
editTextGroupName = view.findViewById(R.id.editTextGroupName);
return builder.create();
}
#Override
public void onAttach(#NonNull Context context) {
super.onAttach(context);
try {
listener = (AddGroupDialogListener) context;
} catch (ClassCastException e){
throw new ClassCastException(context.toString() +
"Must implement AddGroupDialogListener");
}
}
public interface AddGroupDialogListener{
void applyString(String groupName);
}
}
public class MainActivity extends AppCompatActivity{
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
SectionsPagerAdapter sectionsPagerAdapter = new SectionsPagerAdapter(this, getSupportFragmentManager());
ViewPager viewPager = findViewById(R.id.view_pager);
viewPager.setAdapter(sectionsPagerAdapter);
TabLayout tabs = findViewById(R.id.tabs);
tabs.setupWithViewPager(viewPager);
}
}
public class SectionsPagerAdapter extends FragmentPagerAdapter {
#StringRes
private static final int[] TAB_TITLES = new int[]{R.string.tab_text_1, R.string.tab_text_2, R.string.tab_text_3};
private final Context mContext;
public SectionsPagerAdapter(Context context, FragmentManager fm) {
super(fm);
mContext = context;
}
#Override
public Fragment getItem(int position) {
Fragment fragment = null;
switch (position){
case 0:
fragment = new GroupFragment();
break;
case 1:
fragment = new AttendanceFragment();
break;
case 2:
fragment = new StatisticsFragment();
break;
}
return fragment;
}
#Nullable
#Override
public CharSequence getPageTitle(int position) {
return mContext.getResources().getString(TAB_TITLES[position]);
}
#Override
public int getCount() {
return TAB_TITLES.length;
}
}
Error:
java.lang.ClassCastException: com.example.attendencetaker.MainActivity#26602bcMust implement AddGroupDialogListener
I hope my explanation of the problem is clear. Thank you!
Make the activity implement your interfaces and so on and then pass all data to the fragment with an method on the fragment. You will need an reference to actual Fragment that is displayed.
In your fragment add a method similar to this:
public void updateData(String data) {
editText.setText(data);
}
And in the override method of the interface in your activity to this:
#Override
public void update(String data) {
fragment.updateData(data);
}
Update
Use this Adapter instead:
public class SectionTabAdapter extends FragmentPagerAdapter {
private ArrayList<Fragment> fragments = new ArrayList<>();
private ArrayList<String> titles = new ArrayList<>();
public SectionTabAdapter(#NonNull FragmentManager fm, int behavior) {
super(fm, behavior);
}
public void addFragment(Fragment fragment, String title) {
fragments.add(fragment);
titles.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 titles.get(position);
}
}
In your activity then do this:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
SectionsPagerAdapter sectionTabAdapter = new SectionTabAdapter(this, getSupportFragmentManager());
Fragment groupFragment = new GroupFragment();
Fragment attendanceFragment = new AttendanceFragment();
Fragment statisticsFragment = new StatisticsFragment();
sectionTabAdapter.addFragment(groupFragment, context.getString(R.string.title_1);
sectionTabAdapter.addFragment(attendanceFragment, context.getString(R.string.title_2);
sectionTabAdapter.addFragment(statisticsFragment, context.getString(R.string.title_3);
ViewPager viewPager = findViewById(R.id.view_pager);
viewPager.setAdapter(sectionTabAdapter);
TabLayout tabs = findViewById(R.id.tabs);
tabs.setupWithViewPager(viewPager);
}
how can i implement a onRefreshListener in fragments if i am using ViewPager (ViewPager 2) with FragmentStateAdapter.
I found only examples with FragmentPageAdapter.
the other code works so far, i mean swiping between fragments an displaying a list of strings.
Just the refresh (pull from top to bottom) don't work.
I just see the refresh symbol short and then it dissapears.
In the debugger the onRefresh functions will not be called, after a refresh action.
This is my Code:
main activity
viewPager = findViewById(R.id.view_pager);
tabLayout = findViewById(R.id.tabs);
viewPager.setAdapter(new ViewPagerAdapter(this, dataManager));
new TabLayoutMediator(tabLayout, viewPager,
new TabLayoutMediator.TabConfigurationStrategy() {
#Override public void onConfigureTab(#NonNull TabLayout.Tab tab, int position) {
tab.setText("Tab " + (position + 1));
}
}).attach();
viewpager
public class ViewPagerAdapter extends FragmentStateAdapter {
private static final int CARD_ITEM_SIZE = 3;
private DataManager dataManager;
public ViewPagerAdapter(#NonNull FragmentActivity fragmentActivity, DataManager dataManager) {
super(fragmentActivity);
this.dataManager = dataManager;
}
#NonNull #Override public Fragment createFragment(int position) {
Fragment fragment = null;
if (position == 0)
{
fragment = new FragmentA();
Bundle bundle = new Bundle(2);
bundle.putString("TOKEN", dataManager.getToken());
bundle.putString("SERVER_URL", dataManager.getServerURL());
fragment.setArguments(bundle);
}
else if (position == 1)
{
fragment = new FragmentB();
}
else if (position == 2)
{
fragment = new FragmentC();
}
return fragment;
}
#Override public int getItemCount() {
return CARD_ITEM_SIZE;
}
fragment
public class FragmentA extends Fragment implements SwipeRefreshLayout.OnRefreshListener{
private RecyclerView recyclerView;
private SwipeRefreshLayout swipeLayout;
private Bundle bundle;
private ListView mainListView;
private LibrariesAdapter listAdapter;
private LibraryDataManager libraryDataManager;
private RecyclerViewAdapter adapter;
private GetLibrariesTask getLibrariesTask;
private String token;
private String serverUrl;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
bundle = getArguments();
if (bundle != null) {
token = bundle.getString("TOKEN");
serverUrl = bundle.getString("SERVER_URL");
libraryDataManager = new LibraryDataManager(token, serverUrl);
} else {
// ToDo show error or something else
}
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View rootView = inflater.inflate(
R.layout.fragment, container, false);
swipeLayout = rootView.findViewById(R.id.swiperefresh);
getLibrariesTask = new GetLibrariesTask();
getLibrariesTask.execute();
return rootView;
}
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mainListView = view.findViewById(android.R.id.list);
ArrayList<Library> librariesList = new ArrayList<>();
listAdapter = new LibrariesAdapter(getActivity(), librariesList);
mainListView.setAdapter(listAdapter);
swipeLayout.setOnRefreshListener(this);
swipeLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh() {
getLibrariesTask = new GetLibrariesTask();
getLibrariesTask.execute();
}
});
}
private class GetLibrariesTask extends AsyncTask<Void, Void, List<Library>> {
#Override
protected List<Library> doInBackground(Void... args) {
List<Library> libraries = libraryDataManager.getLibraries();
return libraries;
}
#Override
protected void onPostExecute(List<Library> libraries) {
listAdapter.clear();
listAdapter.addAll(libraries);
listAdapter.notifyDataSetChanged();
Logger.debug("on refresh2");
// swipeLayout.setRefreshing(false);
}
}
}
I am a having a fragment with TabLayout. As soon as I move from TabLayout Fragment to the next Fragment and press the back key. The content on the default TabLayout fragment disappears. I found a possible solution to this in the post. Following is the code for the TabLayout.
public class IndividualCollectionSheetFragment extends MifosBaseFragment {
private TabLayout tabLayout;
private ViewPager viewPager;
private View rootView;
public IndividualCollectionSheetFragment() {
}
public static IndividualCollectionSheetFragment newInstance() {
Bundle args = new Bundle();
IndividualCollectionSheetFragment fragment = new IndividualCollectionSheetFragment();
fragment.setArguments(args);
return fragment;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater,
#Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.fragment_individual_recycler, container, false);
ButterKnife.bind(this, rootView);
setToolbarTitle(getStringMessage(R.string.individual_collection_sheet));
viewPager = rootView.findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = rootView.findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
return rootView;
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getActivity().getSupportFragmentManager());
adapter.addFragment(new NewIndividualCollectionSheetFragment(), Constants.NEW);
adapter.addFragment(new SavedIndividualCollectionSheetFragment(), Constants.SAVED);
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);
}
}
}
The solution in the post suggested using getChildFramentManager instead of getSupportFragmentManager. As soon as I changed to getChildFragmentManager. I got the error.
java.lang.IllegalStateException: Fragment CollectionSheetDialogFragment{572dd42 #0 Identifier Dialog Fragment} declared target fragment NewIndividualCollectionSheetFragment{45e8153 #0 id=0x7f090361 android:switcher:2131297121:0} that does not belong to this FragmentManager!
which might be because of the class CollectionSheetDialogFragment which extends DialogFragment and there must be inconsistencies with the different Fragment Managers being used.
NewIndividualCollectionSheet.java(first fragment in tablayout)
public class NewIndividualCollectionSheetFragment extends MifosBaseFragment implements
IndividualCollectionSheetMvpView, MFDatePicker.OnDatePickListener,
Spinner.OnItemSelectedListener, View.OnClickListener {
#BindView(R.id.btn_fetch_collection_sheet)
Button btnFetchSheet;
#BindView(R.id.sp_office_list)
Spinner spOffices;
#BindView(R.id.sp_staff_list)
Spinner spStaff;
#BindView(R.id.tv_repayment_date)
TextView tvRepaymentDate;
#Inject
NewIndividualCollectionSheetPresenter presenter;
private IndividualCollectionSheet sheet;
private DialogFragment datePicker;
private RequestCollectionSheetPayload requestPayload;
private View rootView;
private ArrayAdapter<String> officeAdapter;
private ArrayList<String> officeNameList;
private List<Office> officeList;
private ArrayAdapter<String> staffAdapter;
private ArrayList<String> staffNameList;
private List<Staff> staffList;
private int officeId;
private int staffId;
private int requestCode = 1;
private boolean success = true;
private String actualDisbursementDate;
private String transactionDate;
public NewIndividualCollectionSheetFragment() {
}
public static NewIndividualCollectionSheetFragment newInstance() {
Bundle args = new Bundle();
NewIndividualCollectionSheetFragment fragment = new NewIndividualCollectionSheetFragment();
fragment.setArguments(args);
return fragment;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
((MifosBaseActivity) getActivity()).getActivityComponent().inject(this);
if (savedInstanceState != null) {
sheet = (IndividualCollectionSheet) savedInstanceState.get(
Constants.EXTRA_COLLECTION_INDIVIDUAL);
}
setHasOptionsMenu(true);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.fragment_new_collection_sheet, container, false);
ButterKnife.bind(this, rootView);
setToolbarTitle(getStringMessage(R.string.individual_collection_sheet));
presenter.attachView(this);
setUpUi();
return rootView;
}
private void setUpUi() {
setRepaymentDate();
officeNameList = new ArrayList<>();
officeAdapter = new ArrayAdapter<>(getActivity(),
android.R.layout.simple_spinner_item, officeNameList);
officeAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spOffices.setAdapter(officeAdapter);
spOffices.setOnItemSelectedListener(this);
staffNameList = new ArrayList<>();
staffAdapter = new ArrayAdapter<>(getActivity(),
android.R.layout.simple_spinner_item, staffNameList);
staffAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spStaff.setAdapter(staffAdapter);
tvRepaymentDate.setOnClickListener(this);
btnFetchSheet.setOnClickListener(this);
presenter.fetchOffices();
}
void setRepaymentDate() {
datePicker = MFDatePicker.newInsance(this);
String date = DateHelper.
getDateAsStringUsedForCollectionSheetPayload(MFDatePicker.getDatePickedAsString());
tvRepaymentDate.setText(date.replace('-', ' '));
transactionDate = date.replace('-', ' ');
actualDisbursementDate = transactionDate;
}
private void prepareRequestPayload() {
requestPayload = new RequestCollectionSheetPayload();
requestPayload.setOfficeId(officeId);
requestPayload.setStaffId(staffId);
requestPayload.setTransactionDate(tvRepaymentDate.getText().toString());
}
#Override
public void setOfficeSpinner(List<Office> offices) {
officeList = offices;
officeNameList.clear();
officeNameList.add(getString(R.string.spinner_office));
officeNameList.addAll(presenter.filterOffices(officeList));
officeAdapter.notifyDataSetChanged();
}
#Override
public void onDatePicked(String date) {
String d = DateHelper.getDateAsStringUsedForCollectionSheetPayload(date);
tvRepaymentDate.setText(d.replace('-', ' '));
}
public void retrieveCollectionSheet() {
prepareRequestPayload();
presenter.fetchIndividualCollectionSheet(requestPayload);
}
public void setTvRepaymentDate() {
datePicker.show(getActivity().getSupportFragmentManager(),
FragmentConstants.DFRAG_DATE_PICKER);
}
#Override
public void setStaffSpinner(List<Staff> staffs) {
spStaff.setOnItemSelectedListener(this);
staffList = staffs;
staffNameList.clear();
staffNameList.add(getString(R.string.spinner_staff));
staffNameList.addAll(presenter.filterStaff(staffList));
staffAdapter.notifyDataSetChanged();
}
#Override
public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
switch (adapterView.getId()) {
case R.id.sp_office_list:
if (i == officeList.size() || i == 0) {
Toaster.show(rootView, getStringMessage(R.string.error_select_office));
} else {
Toaster.show(rootView, officeNameList.get(i));
officeId = officeList.get(i - 1).getId();
presenter.fetchStaff(officeId);
}
break;
case R.id.sp_staff_list:
if (i == staffList.size() || i == 0) {
Toaster.show(rootView, getStringMessage(R.string.error_select_staff));
} else {
staffId = staffList.get(i - 1).getId();
}
break;
}
}
public void popupDialog() {
CollectionSheetDialogFragment collectionSheetDialogFragment =
CollectionSheetDialogFragment.newInstance(tvRepaymentDate.getText().toString(),
sheet.getClients().size());
collectionSheetDialogFragment.setTargetFragment(this, requestCode);
FragmentTransaction fragmentTransaction = getActivity().getSupportFragmentManager()
.beginTransaction();
fragmentTransaction.addToBackStack(FragmentConstants.FRAG_DOCUMENT_LIST);
collectionSheetDialogFragment.show(fragmentTransaction, "Identifier Dialog Fragment");
}
public void getResponse(String response) {
switch (response) {
case "FillNow":
FragmentManager fm = getActivity()
.getSupportFragmentManager();
fm.popBackStack();
IndividualCollectionSheetDetailsFragment frag = new
IndividualCollectionSheetDetailsFragment().newInstance(sheet,
actualDisbursementDate, transactionDate);
((MifosBaseActivity) getActivity()).replaceFragment(frag,
true, R.id.container);
break;
}
}
#Override
public void onNothingSelected(AdapterView<?> adapterView) {
}
#Override
public void showSheet(IndividualCollectionSheet individualCollectionSheet) {
sheet = individualCollectionSheet;
}
#Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putParcelable(Constants.EXTRA_COLLECTION_INDIVIDUAL, sheet);
}
#Override
public void showSuccess() {
if (success) {
popupDialog();
}
}
#Override
public void showError(String message) {
Toaster.show(rootView, message);
}
#Override
public void showNoSheetFound() {
success = false;
Toaster.show(rootView, getStringMessage(R.string.no_collectionsheet_found));
}
#Override
public void showProgressbar(boolean b) {
if (b) {
showMifosProgressDialog();
} else {
hideMifosProgressDialog();
}
}
#Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.tv_repayment_date:
setTvRepaymentDate();
break;
case R.id.btn_fetch_collection_sheet:
retrieveCollectionSheet();
break;
}
}
}
CollectionSheetDialogFragment.java
public class CollectionSheetDialogFragment extends DialogFragment {
#BindView(R.id.tv_due_date)
TextView tvDueDate;
#BindView(R.id.tv_members)
TextView tvMembers;
#BindView(R.id.btn_fillnow)
Button btnFillnow;
#BindView(R.id.btn_cancel)
Button btnCancel;
private View rootView;
private String date;
private int members;
public CollectionSheetDialogFragment() {
}
public static CollectionSheetDialogFragment newInstance(String date, int members) {
CollectionSheetDialogFragment collectionSheetDialogFragment =
new CollectionSheetDialogFragment();
Bundle args = new Bundle();
args.putString(Constants.REPAYMENT_DATE, date);
args.putInt(Constants.MEMBERS, members);
collectionSheetDialogFragment.setArguments(args);
return collectionSheetDialogFragment;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
((MifosBaseActivity) getActivity()).getActivityComponent().inject(this);
date = getArguments().getString(Constants.REPAYMENT_DATE);
members = getArguments().getInt(Constants.MEMBERS);
super.onCreate(savedInstanceState);
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable
ViewGroup container, Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.fragment_collection_sheet_dialog, container, false);
ButterKnife.bind(this, rootView);
return rootView;
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
tvDueDate.setText(date);
tvMembers.setText(Integer.toString(members));
}
#OnClick(R.id.btn_fillnow)
public void setBtnFillnow() {
((NewIndividualCollectionSheetFragment) getTargetFragment()).getResponse("FillNow");
}
#OnClick(R.id.btn_cancel)
public void setBtnCancel() {
getDialog().dismiss();
}
}
Can someone help me get around this error so I can persist the TabLayout On back press?
Maybe This Work :
Replace getFragmentManager() instead of getChildFragmentManager()
Try this changing seupViewPager() in IndividualCollectionSheetFragment.java like this
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getActivity().getChildFragmentManager());
adapter.addFragment(new NewIndividualCollectionSheetFragment(), Constants.NEW);
adapter.addFragment(new SavedIndividualCollectionSheetFragment(), Constants.SAVED);
viewPager.setAdapter(adapter);
}
I have a variable in MainActivity that I have successfully passed to StoriesActivity.
The problem is with getting it from there to StoriesFragment, which is a TabLayout tab.
I understand about Intents and Bundles but I'm not sure how they'd work in this instance.
This is StoriesActivity:
public class StoriesActivity extends AppCompatActivity {
//This is our tablayout
private TabLayout tabLayout;
//This is our viewPager
private ViewPager viewPager;
private Toolbar toolbar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_stories);
/* +++ START Intent +++ */
Bundle extras = getIntent().getExtras();
final int authorID = extras.getInt("author_id");
final String authorName = extras.getString("author_name");
Log.i("click", Integer.toString(authorID));
// this is successful
/* +++ END Intent +++ */
toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setTitle(authorName);
setSupportActionBar(toolbar);
toolbar.setNavigationOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
finish();
}
});
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFragment(new StoriesFragment(), "Stories");
adapter.addFragment(new CollectionsFragment(), "Collections");
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);
}
}
}
And this is StoriesFragment (which doesn't work at the moment because it's not accessing the authorID variable from StoriesActivity):
public class StoriesFragment extends Fragment {
public StoriesFragment() {
// Required empty public constructor
}
private ListView storiesListView;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// link ListView object with XML ListView
storiesListView = (ListView) findViewById(R.id.stories_list_view);
// create new instance of DatabaseHelper
DatabaseHelper db = new DatabaseHelper(this);
// create list of stories through getAllStories method
List<Book> storyList = db.getAllStories(authorID);
// create new ArrayAdapter
ArrayAdapter<Book> arrayAdapter =
new ArrayAdapter<Book>(this, android.R.layout.simple_list_item_1, storyList);
// link ListView and ArrayAdapter
storiesListView.setAdapter(arrayAdapter);
Log.i("test", storyList.toString());
storiesListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
Book story = (Book) storiesListView.getItemAtPosition(i);
//Log.i("click", story);
Intent intent = new Intent(StoriesActivity.this, StoryBodyActivity.class);
intent.putExtra("story", story.getTitle());
startActivity(intent);
//Log.i("click", "That's a click!");
}
});
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_stories, container, false);
}
}
StoriesTabsAdapter:
public class StoriesTabsAdapter extends FragmentPagerAdapter {
int mNumOfTabs;
public StoriesTabsAdapter(FragmentManager fm, int NumOfTabs) {
super(fm);
this.mNumOfTabs = NumOfTabs;
}
private String[] tabTitles = new String[]{"Stories", "Collections"};
// overriding getPageTitle()
#Override
public CharSequence getPageTitle(int position) {
return tabTitles[position];
}
#Override
public Fragment getItem(int position) {
switch (position) {
case 0:
StoriesFragment tab1 = new StoriesFragment();
return tab1;
case 1:
CollectionsFragment tab2 = new CollectionsFragment();
return tab2;
default:
return null;
}
}
#Override
public int getCount() {
return tabTitles.length;
}
}
Here is solution to your problem:
This is your activity:
public class StoriesActivity extends AppCompatActivity {
//This is our tablayout
private TabLayout tabLayout;
//This is our viewPager
private ViewPager viewPager;
private Toolbar toolbar;
private int authorID;
private String authorName;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_stories);
/* +++ START Intent +++ */
Bundle extras = getIntent().getExtras();
authorID = extras.getInt("author_id");
authorName = extras.getString("author_name");
Log.i("click", Integer.toString(authorID));
// this is successful
/* +++ END Intent +++ */
toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setTitle(authorName);
setSupportActionBar(toolbar);
toolbar.setNavigationOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
finish();
}
});
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFragment(StoriesFragment.newInstance(authorID, authorName), "Stories");
adapter.addFragment(new CollectionsFragment(), "Collections");
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);
}
}
}
This is your fragment:
public class StoriesFragment extends Fragment {
private int authorID;
private String authorName;
public StoriesFragment() {
// Required empty public constructor
}
public static StoriesFragment newInstance(int authorID, String authorName) {
Bundle args = new Bundle();
args.putInt("author_id", authorID);
args.putString("author_name", authorName);
StoriesFragment fragment = new StoriesFragment();
fragment.setArguments(args);
return fragment;
}
private ListView storiesListView;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Here is your arguments
authorID = getArguments().getInt("author_id");
authorName = getArguments().getString("author_name");
// link ListView object with XML ListView
storiesListView = (ListView) findViewById(R.id.stories_list_view);
// create new instance of DatabaseHelper
DatabaseHelper db = new DatabaseHelper(this);
// create list of stories through getAllStories method
List<Book> storyList = db.getAllStories(authorID);
// create new ArrayAdapter
ArrayAdapter<Book> arrayAdapter =
new ArrayAdapter<Book>(this, android.R.layout.simple_list_item_1, storyList);
// link ListView and ArrayAdapter
storiesListView.setAdapter(arrayAdapter);
Log.i("test", storyList.toString());
storiesListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
Book story = (Book) storiesListView.getItemAtPosition(i);
//Log.i("click", story);
Intent intent = new Intent(StoriesActivity.this, StoryBodyActivity.class);
intent.putExtra("story", story.getTitle());
startActivity(intent);
//Log.i("click", "That's a click!");
}
});
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_stories, container, false);
}
}
Hope it will help you.
for sending bundle data from your StoriesActivity
private void setupViewPager(ViewPager viewPager) {
Bundle bundle = new Bundle();
bundle.putString("your_key", "yourdata");
// set Fragmentclass Arguments
StoriesFragment fragStory = new StoriesFragment();
fragStory.setArguments(bundle);
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFragment(fragStory, "Stories");
adapter.addFragment(new CollectionsFragment(), "Collections");
viewPager.setAdapter(adapter);
}
Im trying to pass string data together with images.
Why when running this code I get only image 'nature4' shown but there is no 'nature2' image and strings 'Fragment1' etc..
public class MainActivity extends AppCompatActivity {
private ViewPager viewPager;
private ArrayList<String> strs;
private FragmentPagerAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Log.i("x","onCreateActivity");
strs = new ArrayList<String>();
strs.add("Fragment 1");
strs.add("Fragment 2");
strs.add("Fragment 3");
strs.add("Fragment 4");
strs.add("Fragment 5");
viewPager = (ViewPager) findViewById(R.id.pager);
adapter = new FragmentPagerAdapter(getSupportFragmentManager(), strs);
viewPager.setAdapter(adapter);
}
public class FragmentPagerAdapter extends FragmentStatePagerAdapter {
private ArrayList<String> itemData;
public FragmentPagerAdapter(FragmentManager fm, ArrayList<String> itemData) {
super(fm);
this.itemData = itemData;
}
#Override
public int getCount()
{
return itemData.size();
}
#Override
public void destroyItem(ViewGroup container, int position, Object object) {
super.destroyItem(container, position, object);
Log.i("x","destroyItem");
}
#Override
public Fragment getItem(int position){
Log.i("x","getItem");
// pass data to fragment
Fragment1 f = Fragment1.newInstance(itemData.get(position));
return f;
}
}
}
And Fragment.class
public class Fragment1 extends Fragment {
public Fragment1(){}
String stringValue;
private int [] images = {R.drawable.nature2,R.drawable.nature4};
public static Fragment1 newInstance(String str)
{
Fragment1 slider=new Fragment1();
Bundle b=new Bundle();
b.putString("stringValue", str);
slider.setArguments(b);
return slider;
}
TextView textView;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
Log.i("x","onCreateViewFragment");
View view = inflater.inflate(R.layout.fragment1, container, false);
textView = (TextView) view.findViewById(R.id.textView);
ImageView photo = (ImageView) view.findViewById(image);
photo.setImageResource(images[1]);
return view;
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
Log.i("x","onActivityCreatedFragment");
super.onActivityCreated(savedInstanceState);
stringValue = getArguments().getString("stringValue");
textView.setText(stringValue);
}
#Override
public void onCreate(Bundle savedInstanceState) {
Log.i("x","onCreateFragment");
super.onCreate(savedInstanceState);
}
}
I think you need to make your question clear. If you want to pass String stringValue and in imageResId from Activity to Fragment, try the following codes.
public static Fragment1 newInstance(String str, int imageResId) {
Fragment1 slider = new Fragment1();
Bundle b=new Bundle();
b.putString("stringValue", str);
b.putInt("image_resid", imageResId);
slider.setArguments(b);
return slider;
}
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
stringValue = getArguments().getString("stringValue");
imageResId = getArguments().getIn("image_resid");
}
FragmentPagerAdapter:
public class FragmentPagerAdapter extends FragmentStatePagerAdapter {
...
#Override
public Fragment getItem(int position){
Fragment fragment;
String str = itemData.get(position);
int resId;
if (position == 0) {
resId = R.drawable.nature2;
} else if (position == 1) {
resId = R.drawable.nature4;
}
fragment = Fragment1.newInstance(str, resId);
...
return fragment;
}
}