I have an application with a main activity and inside it there is a viewpager with fragments generated by a list and a floating button. What I want is that by clicking this button I can return data of all fragments generated for this activity. But it always returns only the data from the last fragment.
public class QuestionFragment extends Fragment {
private TextView tvQuestionNumber;
private TextView tvQuestion;
private RadioGroup rgAnswer;
private RadioButton rb1, rb2, rb3, rb4, rb5;
private ImageView ivPhoto;
private Question question;
private FloatingActionButton fab;
// declaração da interface de comunicação
public interface communication {
// aqui, um ou mais métodos de comunicação
void setData(int data); // por exemplo, este método retorna a idade inserida no fragment
}
/* variável que representa quem vai receber a atualização dos dados, no caso a activity principal, que vai implementar a interface de comunicação */
private communication listener;
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
if (activity instanceof communication) {
listener = (communication) activity;
} else {
throw new RuntimeException("Activity deve implementar ExemploFragment.Communication");
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
View view = inflater.inflate(R.layout.question_fragment, container, false);
tvQuestionNumber = (TextView) view.findViewById(R.id.tv_question_number);
tvQuestion = (TextView) view.findViewById(R.id.tv_question);
rgAnswer = (RadioGroup) view.findViewById(R.id.rg_answer);
ivPhoto = (ImageView) view.findViewById(R.id.iv_photo);
rb1 = (RadioButton) view.findViewById(R.id.rb_option_1);
rb2 = (RadioButton) view.findViewById(R.id.rb_option_2);
rb3 = (RadioButton) view.findViewById(R.id.rb_option_3);
rb4 = (RadioButton) view.findViewById(R.id.rb_option_4);
rb5 = (RadioButton) view.findViewById(R.id.rb_option_5);
fab = (FloatingActionButton) getActivity().findViewById(R.id.fab);
return view;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
final Bundle data = getArguments();
if (savedInstanceState != null && savedInstanceState.getParcelable("question") != null) {
question = savedInstanceState.getParcelable("question");
} else {
question = ((MainActivity) getActivity()).questionObject(data.getInt("position"));
}
tvQuestionNumber.setText("Questão " + (data.getInt("position") + 1) + ":");
tvQuestion.setText(question.getQuestion());
if (question.getUrl() != null) {
float scale = getActivity().getResources().getDisplayMetrics().density;
int width = getActivity().getResources().getDisplayMetrics().widthPixels - (int)(14 * scale + 0.5f);
int height = (width / 16) * 9;
Glide
.with(getActivity())
.load(question.getUrl())
.centerCrop()
.crossFade()
.into(ivPhoto);
ivPhoto.getLayoutParams().height = height;
ivPhoto.setVisibility(View.VISIBLE);
}
rb1.setText(question.getA());
rb2.setText(question.getB());
rb3.setText(question.getC());
rb4.setText(question.getD());
rb5.setText(question.getE());
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
int id = rgAnswer.getCheckedRadioButtonId();
listener.setData(id);
}
});
}
@Override
public void onResume() {
super.onResume();
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putParcelable("question", question);
}
}
This is the fragment code.