Android - Fading in/out textview

AnimatedTextView.java

package org.sgnn7.ui;

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.TextView;

import org.sgnn7.R;

public class AnimatedTextView extends TextView {
	private static final int IS_ANIMATING_TAG_ID = "isAnimating".hashCode();

	private Animation fadeInAnimation;
	private Animation fadeOutAnimation;

	public AnimatedTextView(Context context) {
		super(context);

		initAnimations(context);
	}

	public AnimatedTextView(Context context, AttributeSet attrs) {
		super(context, attrs);

		initAnimations(context);
	}

	public AnimatedTextView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);

		initAnimations(context);
	}

	public void initAnimations(Context context) {
		fadeInAnimation = AnimationUtils.loadAnimation(this.getContext(), R.anim.fadein);
		fadeOutAnimation = AnimationUtils.loadAnimation(this.getContext(), R.anim.fadeout);

		fadeInAnimation.setAnimationListener(new AnimationListenerAdapter() {
			@Override
			public void onAnimationStart(Animation animation) {
				setAnimatingFlag(true);
			}

			@Override
			public void onAnimationEnd(Animation animation) {
				setAnimatingFlag(false);
			}
		});

		fadeOutAnimation.setAnimationListener(new AnimationListenerAdapter() {
			@Override
			public void onAnimationStart(Animation animation) {
				setAnimatingFlag(false);
			}

		});

		setAnimatingFlag(false);
	}

	public void fadeOut() {
		if (getVisibility() == View.VISIBLE) {
			startAnimation(fadeOutAnimation);
			setVisibility(View.INVISIBLE);
		}
	}

	public void fadeIn() {
		if (getVisibility() == View.INVISIBLE && !isAnimating()) {
			startAnimation(fadeInAnimation);
			setVisibility(View.VISIBLE);
		}
	}

	private boolean isAnimating() {
		return (Boolean) getTag(IS_ANIMATING_TAG_ID) == true;
	}

	private void setAnimatingFlag(boolean isAnimating) {
		setTag(IS_ANIMATING_TAG_ID, new Boolean(isAnimating));
	}
}

put the full code bcus the R.anim.fadein & fadeout is not available