Listen to FragmentTransaction animation events

ObservableFragment.java

import android.animation.Animator;
import android.animation.AnimatorInflater;
import android.app.Fragment;

/**
 * Created by francesco on 14/10/14.
 */
public class ObservableFragment extends Fragment {

    private TransitionListener mListener;

    @Override
    public Animator onCreateAnimator(int transit, boolean enter, int nextAnim) {
        if(nextAnim != 0x0) {
            Animator animator = AnimatorInflater.loadAnimator(getActivity(), nextAnim);
            if (mListener != null) {
                animator.addListener(new Animator.AnimatorListener() {
                    @Override
                    public void onAnimationStart(Animator animation) {
                        mListener.onTransitionStarted();
                    }

                    @Override
                    public void onAnimationEnd(Animator animation) {
                        mListener.onTransitionEnded();
                    }

                    @Override
                    public void onAnimationCancel(Animator animation) {
                        mListener.onTransitionCancel();
                    }

                    @Override
                    public void onAnimationRepeat(Animator animation) {
                        mListener.onTransitionRepeated();
                    }
                });
            }
            return animator;
        }
        return null;
    }

    public void setTransitionListener(TransitionListener listener) {
        this.mListener = listener;
    }

    public interface TransitionListener {

        public void onTransitionStarted();

        public void onTransitionCancel();

        public void onTransitionEnded();

        public void onTransitionRepeated();
    }
}

sample.java

ObservableFragment f = new MyFragment();

f.setTransitionListener(new ObservableFragment.TransitionListener() {
        
        @Override
        public void onTransitionStarted() {
            
        };
        
        @Override
        public void onTransitionCancel(){
            
        };
        
        @Override
        public void onTransitionEnded(){
            
        };
        
        @Override
        public void onTransitionRepeated(){
            
        };
    });