Alternative for the onResume() during Fragment switching

Question

onResume() method won't get called when we switch between fragments more than one time. So, is there any better way to handle resume operation?

Answer 1

Code follows:

Step: 1

Create Interface:

public interface YourFragmentInterface {     void fragmentBecameVisible(); } 

Step: 2

Attach Listner In setOnPageChangeListener:

mViewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {         @Override         public void onPageScrolled(final int position, final float v, final int i2) {         }          @Override         public void onPageSelected(final int position) {             YourFragmentInterface fragment = (YourFragmentInterface) mPagerAdapter.instantiateItem(mViewPager, position);             if (fragment != null) {                 fragment.fragmentBecameVisible();             }          }          @Override         public void onPageScrollStateChanged(final int position) {         }     }); 

Step: 3

Implement Interface In Your Fragment:

public class yourActivity extends SherlockFragment implements YourFragmentInterface{     @Override     public void fragmentBecameVisible() {           System.out.println("TestFragment");     } } 

Implement this listner in all yor fragment activity fragmentBecameVisible() this method call during Fragment switching.

Thanks.

Answer 2

You can simply simulate onResume() for each fragment by using an interface!!!

1- create an interface named FragmentLifecycle , the code is as follows:

public interface FragmentLifecycle {    public void onResumeFragment(); } 

2- Let each Fragment implement the interface:

public class FragmentOne extends Fragment implements FragmentLifecycle 

3- Implement interface methods in each fragment:

@Override public void onResumeFragment() {   Log.i(TAG, "onResumeFragment()");   Toast.makeText(getActivity(), "onResumeFragment():" + TAG,Toast.LENGTH_SHORT).show();  } 

4- Call interface methods on ViewPager page change:

viewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {         @Override         public void onPageSelected(int position) {              FragmentLifecycle fragmentToShow = (FragmentLifecycle)adapter.getItem(position);             fragmentToShow.onResumeFragment();         }     }); 

Enjoy!