code.txt

package com.hit.wi.t9.settings;

import android.view.animation.AccelerateInterpolator;
import android.view.animation.Animation;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.TranslateAnimation;

/**
 * 工厂方法,生成一个飞进飞出的动画
 * @author dagger
 *
 */
public class FlyAnimationFactory{
	public static final int FLYIN_ANIMATION = 0;
	public static final int FLYOUT_ANIMATION = 1;
	
	float mWidth, mHeight, mY, mFromX, mToX;
	long mDuration;
	int mInterpolatorType;
	TranslateAnimation animation;
	private static FlyAnimationFactory mFlyAnimationFactory = null;
	private FlyAnimationFactory(){
	}
	
	public static FlyAnimationFactory getInstance(){
		if (mFlyAnimationFactory == null){
			mFlyAnimationFactory = new FlyAnimationFactory();
		}
		return mFlyAnimationFactory;
	}
	
	/**
	 * 
	 * @param fromX ABSOLUTE
	 * @param toX ABSOLUTE
	 * @param Y ABSOLUTE
	 * @param duration 速度变化区间从1~1000，动画持续时间
	 * @param interpolatorType
	 * @return
	 */
	public TranslateAnimation getFlyAnimation(float fromX, float toX, float Y, long duration, int interpolatorType){
		
		this.mFromX = fromX;
		this.mToX = toX;
		this.mY = Y;
		this.mDuration = duration;
		this.mInterpolatorType = interpolatorType;
		
		animation = new TranslateAnimation(Animation.ABSOLUTE, mFromX,
				Animation.ABSOLUTE, mToX,
				Animation.ABSOLUTE, mY, 
				Animation.ABSOLUTE, mY);
		
		if (interpolatorType == FLYIN_ANIMATION){
			animation.setInterpolator(new DecelerateInterpolator());
		}else{
			animation.setInterpolator(new AccelerateInterpolator());
		}
		animation.setFillAfter(true);
		animation.setDuration(mDuration);
		return animation;
	}
	
}