CODEWITHSUNDEEP
javaandroidandroid-fragments
Shino Rascal
Shino Rascal

Reputation: 157

setText in fragment from another activity not related with fragment

i wanna set textView in fragment from another activity which this activity is not MainActivity has fragment transaction ..

already tried some method from the other related article which related with my problem, but got an error..

here's my method inside fragment to recieve from another activity

Fragment A

public class FragmentA extends Fragment {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);


        ProgressDialog pDialog = new ProgressDialog(getContext());
        pDialog.setCancelable(false);

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflating view layout
        View layout = inflater.inflate(R.layout.fragment_A, container, false);

        //Put Data to id fragment
        valueName = (TextView) layout.findViewById(R.id.valueNameNav);
        valueStatus = (TextView) layout.findViewById(R.id.valueStatusNav);

    }

    public void setText(String name, String status){

            valueName = (TextView) getView().findViewById(R.id.valueNameNav);
            valueName.setText(name);
            valueStatus = (TextView) getView().findViewById(R.id.valueStatusNav);
            valueStatus.setText(status);
    }
}

and this is how i call setText method in fragment from activity

String editValueName= editName.getText().toString();
String lastStatus = valueStatus.getText().toString();

FragmentA mFragment = (FragmentA )
     getSupportFragmentManager().findFragmentById(R.id.fragment_A);

mFragment.setText(editValueName, lastStatus);

but got an error like this

java.lang.NullPointerException: Attempt to invoke virtual method 'void com.example.study.fragment.fragmentA.setText(java.lang.String, java.lang.String)' on a null object reference

100% sure there's a data string on string getText

Upvotes: 3

Views: 878

Answers (4)

Sandeep Agrawal
Sandeep Agrawal

Reputation: 576

Try to do like this and make sure your fragment is attached with activity.

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

    if(savedInstanceState == null)
    {
        fragment = new FragmentA();
        fragment.setTag(R.id.myfragmentId);
        getFragmentManager().beginTransaction()
            .add(R.id.container, fragment).commit();
    }
    else
    {
        if(fragment == null)
        {
            fragment = (FragmentA) getFragmentManager().findFragmentByTag(R.id.myfragmentId);
        }
    }
}

Upvotes: 1

Mureed Hussain
Mureed Hussain

Reputation: 2795

No need to findView in setText method you should do in this way and it will work

public class FragmentA extends Fragment {

TextView valueName,valueStatus ;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);


    ProgressDialog pDialog = new ProgressDialog(getContext());
    pDialog.setCancelable(false);

}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflating view layout
    View layout = inflater.inflate(R.layout.fragment_A, container, false);

    //Put Data to id fragment
    valueName = (TextView) layout.findViewById(R.id.valueNameNav);
    valueStatus = (TextView) layout.findViewById(R.id.valueStatusNav);

 return layout;
}

public void setText(String name, String status){

        valueName.setText(name);
        valueStatus.setText(status);
}

}

Upvotes: 2

Burhanuddin Rashid
Burhanuddin Rashid

Reputation: 5370

Create a FrameLayout in your activity with id container with height width to MATCH_PARENT Then add fragment in your activity like this

FragmentA newFragment = new FragmentA ();
            FragmentTransaction ft = getFragmentManager().beginTransaction();
            ft.replace(R.id.container, newFragment).commit();

and than set your text

String editValueName= editName.getText().toString();
String lastStatus = valueStatus.getText().toString();
newFragment .setText(editValueName, lastStatus);

Upvotes: 2

peyman rahmani
peyman rahmani

Reputation: 73

You can useing store SharedPreferences for save your string and load it in every where.Of course, if you like to change your code.

Upvotes: 2

Related Questions