[SNIPPET] ObservableFragment

[cesco]

Ho creato questa classe che estende android.app.Fragment per avere dei callback quando la transizione da un fragment all'altro è completa.
Perchè funzioni è necessario impostare un'animazione custom per la transizione tra fragments

https://gist.github.com/cesco89/9ddb738eef1cead8fea7

	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();
	}
	}

view raw ObservableFragment.java hosted with ❤ by GitHub

	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(){
	};
	});

view raw sample.java hosted with ❤ by GitHub