My app works with a TabLayout (and so a ViewPager).
I have a Fragment A and a Fragment B. My goal is to recover data from my EditTexts of Fragment A to, obviously, print and works with them in my Fragment B.
For this, I use an interface named ButtonCliked, but seems not to work well. Did I forgot something ?
TabFragment.java (use to manage my fragments)
public class TabFragment extends Fragment implements EquationsCalculFragment.ButtonClicked {
public static TabLayout tabLayout;
public static ViewPager viewPager;
public static int int_items = 3 ;
@Override
public void sendResultats(float a, float b) {
EquationsResultatFragment fragRes = (EquationsResultatFragment) getFragmentManager().findFragmentById(R.id.Equa_2nd_ResLayout);
fragRes.getResultat(a, b);
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
/**
*Inflate tab_layout and setup Views.
*/
View x = inflater.inflate(R.layout.tab_layout,null);
tabLayout = (TabLayout) x.findViewById(R.id.tabs);
viewPager = (ViewPager) x.findViewById(R.id.viewpager);
/**
*Set an Apater for the View Pager
*/
viewPager.setAdapter(new MyAdapter(getChildFragmentManager()));
tabLayout.post(new Runnable() {
@Override
public void run() {
tabLayout.setupWithViewPager(viewPager);
}
});
return x;
}
class MyAdapter extends FragmentPagerAdapter{
public MyAdapter(FragmentManager fm) {
super(fm);
}
/**
* Return fragment with respect to Position .
*/
@Override
public Fragment getItem(int position)
{
switch (position){
case 0 : return new EquationsCalculFragment();
case 1 : return new EquationsResultatFragment();
case 2 : return new EquationsInfosFragment();
}
return null;
}
@Override
public int getCount() {
return int_items;
}
/**
* This method returns the title of the tab according to the position.
*/
@Override
public CharSequence getPageTitle(int position) {
switch (position){
case 0 :
return "Calcul";
case 1 :
return "Résultats";
case 2 :
return "Infos";
}
return null;
}
}
}
Fragment A : EquationsCalculFragment.java
public class EquationsCalculFragment extends Fragment {
private String aS;
private String bS;
private EquationsCalculFragment.ButtonClicked callEqua2ndRes;
public interface ButtonClicked {
void sendResultats(float a, float b);
}
private ViewPager viewPager;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_equations_calcul, container, false);
viewPager = (ViewPager) getActivity().findViewById(R.id.viewpager);
final EditText champ_a = (EditText) view.findViewById(R.id.equa_2nd_a);
final EditText champ_b = (EditText) view.findViewById(R.id.equa_2nd_b);
Button button = (Button) view.findViewById(R.id.btn_equations_resultats);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
bS = champ_b.getText().toString();
aS = champ_a.getText().toString();
callEqua2ndRes.sendResultats(Float.parseFloat(aS), Float.parseFloat(bS));
viewPager.setCurrentItem(1, true);
}
});
return view;
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
// This makes sure that the container activity has implemented
// the callback interface. If not, it throws an exception
try {
if (context instanceof EquationsCalculFragment.ButtonClicked) {
callEqua2ndRes = (EquationsCalculFragment.ButtonClicked) context;
}
} catch (ClassCastException e) {
throw new ClassCastException(context.toString()
+ " must implement ButtonClicked");
}
}
@Override
public void onDetach() {
callEqua2ndRes = null;
super.onDetach();
}
}
Fragment B : EquationsResultatFragment.java
public class EquationsResultatFragment extends Fragment {
private TextView results;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_equations_resultat, container, false);
return view;
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
results = (TextView) getView().findViewById(R.id.equa_2nd_resultat);
}
public void getResultat(float a, float b) {
results.setText(String.valueOf((a*a)+(2*a*b)+(b*b)));
}
}
Is there anything I'm doing wrong ?
