如何在没有budle的情况下将数据从活动传递到android中的片段？

Question

This is the activity class of my project

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_tabs_activity);

    String LicID = "DATA"
    Fragment FragmentDetail = new FragmentDetail();
    Bundle data  = new Bundle();
    data.putString("data",LicID);

    FragmentDetail.setArguments(data);

    ViewPageAdapter adapter = new ViewPageAdapter(getSupportFragmentManager());
    adapter.AddFragment(new FragmentDetail(),"Detail");


    viewp.setAdapter(adapter);
    tablay.setupWithViewPager(viewp);
}

}

This is my fragmentDetail activity. and it is a tab fragment...

public class FragmentDetail extends Fragment {

public FragmentDetail() {
}

@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    view = inflater.inflate(R.layout.detail_fragment,container,false);

    return view;
}

@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);


    String LicID = getArguments().getString ("data");
    Toast.makeText(getContext(),""+LicID+" ",Toast.LENGTH_SHORT).show();

} This code is not work.app crash without any error.... please help. thank you

Answer 1

I think the problem is that you set argument to one fragment:

Fragment FragmentDetail = new FragmentDetail();
Bundle data  = new Bundle();
data.putString("data",LicID);

FragmentDetail.setArguments(data);

And add to adapter another fragment:

adapter.AddFragment(new FragmentDetail(),"Detail");

Please, try to use the same fragment.

Answer 2

in tab_activity:

 public String LicID = "DATA"

When you want to access this variable from the fragment attached to activity,

in Detail Fragment :

((tab_activity) (getActivity)).LicID

so you don't have to pass arguments to the fragment and use bundle for this. If you need further assistance, please show your logcat