Change ViewPager Fragment From Child Fragment

Question

I have a ViewPager using a TabLayout with several fragments. I would like to click a button from one of the ViewPager fragments and direct the user to another tab/fragment u

Answer 1

the easiest way to achieve this, using an EventBus framework!

I prefer(ed) using EventBus by greenRobot

How to implement:

1) Create an event class which fulfills your needs

public class ClickedButtonInsideFragmentEvent {

    // some data you want to store

}

2) prepare your subscribers! In your case this would be the Activity which holds the reference to the tab layout:

public class MyTabActivity {

    public void onCreate(Bundle savedInstanceSate) {
        // your stuff you do in onCreate
        eventBus.register(this);
    }

    @Subscribe  
    public void onEvent(ClickedButtonInsideFragmentEvent event) {
        // Do what you want to do
    } 

}

3) and finally: post the event from your OnClickListener insider your fragment:

public class MyClickableFragment {

    public void initOnClickListiner(View clickableView) {
        clickableView.setOnClickListener(new OnClickListener() {
            public void onClick(View view) {
                ClickedButtonInsideFragmentEvent event = new ClickedButtonInsideFragmentEvent();
                // add what you want to your event
                eventBus.post(event);                
            }
        ));
    }

    @Subscribe  
    public void onEvent(ClickedButtonInsideFragmentEvent event) {
        // Do what you want to do
    } 

}