Communication between Fragments in ViewPager

Question

I'm trying to do this: http://android-er.blogspot.com/2012/06/communication-between-fragments-in.html Except that I'm using a FragmentStatePagerAdapter I have an Activity with two fragments(FragmentA & FragmentB) FragmentA has an edittext and a button, FragmentB has a textview Now all I want is that whenever I enter something in the edittext and click the button, that something will appear on my textview. MainActivity: ``` public class MainActivity extends FragmentActivity { ViewPager viewPager = null; String TabFragmentB; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); viewPager = (ViewPager)findViewById(R.id.pager); FragmentManager fragmentManager = getSupportFragmentManager(); viewPager.setAdapter(new MyAdapter(fragmentManager)); } public class MyAdapter extends FragmentStatePagerAdapter { public MyAdapter (FragmentManager fm) { super(fm); } @Override public Fragment getItem(int i) { Fragment…

Accepted Answer

- You could use Intents (register broadcast receiver in fragment B and send broadcasts from fragment A.

- Use EventBus: https://github.com/greenrobot/EventBus. It's my favorite approach. Very convinient to use, easy communications between any components (Activity & Services, for example).

Steps to do:

First, create some class to represent event when your text changes:

```
public class TextChangedEvent {
  public String newText;
  public TextChangedEvent(String newText) {
      this.newText = newText;
  }
}
```

Then, in fragment A:

```
//when text changes
EventBus bus = EventBus.getDefault();
bus.post(new TextChangedEvent(newText));
```

in fragment B:

```
EventBus bus = EventBus.getDefault();

//Register to EventBus
@Override
public void onCreate(SavedInstanceState savedState) {
 bus.register(this);
}

//catch Event from fragment A
public void onEvent(TextChangedEvent event) {
 yourTextView.setText(event.newText);
}
```

Communication between Fragments in ViewPager

Solution

Problem