从 MainActivity 在 Fragment 中编辑 EditText

Question

I've tried to replace textviews whose are connected to fragment with data that I get from service. But even if I use LayoutInflator in Activity to edit those edittextes, I couldn't change them. All I understand is that I need to change them from the fragment but I need to send data from activity to fragment for that, which I couldn't achieve again.

Here's the code lines that I wrote inside onCreate of MainActivity

        LayoutInflater layoutInflater = (LayoutInflater) getApplicationContext()
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        View mView = layoutInflater.inflate(R.layout.tab_designreservation, null);

        Bundle extrasofuser = getIntent().getExtras();
        nameofuser = extrasofuser.getString("nameofuser").toString();
        surnameofuser = extrasofuser.getString("surnameofuser").toString();

        EditText enum_of_name = (EditText) mView.findViewById(R.id.et_name);
        EditText enum_of_surname = (EditText) mView.findViewById(R.id.et_surname);

        enum_of_name.setText(nameofuser);
        enum_of_surname.setText(surnameofuser);

As far as I know, I need to send those string variables to fragment but I couldn't do it. Thanks for your helps!!

Answer 1

If I understood well your problem, you need to set the text of a editText in a Fragment from your Activity. An approach is to keep a reference of the fragment in your activity.

     private MyFragment mFragment;

     @Override
     protected void onCreate(Bundle savedInstanceState) {
        ...
        mFragment = new MyFragment();
        ...
     }

And then create a method in your fragment class to change the EditText text:

     public void changeEditTextContent(Bundle extras){
          String nameofuser = extrasofuser.getString("nameofuser").toString();
          String surnameofuser = extrasofuser.getString("surnameofuser").toString();

           EditText enum_of_name = (EditText) rootView.findViewById(R.id.et_name);
           EditText enum_of_surname = (EditText) rootView.findViewById(R.id.et_surname);

           enum_of_name.setText(nameofuser);
           enum_of_surname.setText(surnameofuser);
     }

Lastly, from your activity you can call this method:

     Bundle extrasofuser = getIntent().getExtras();
     mFragment.changeEditTextContent(extrasofuser);