DepthPageTransformer.java

package com.hua.goddess.animation;

import android.support.v4.view.ViewPager;
import android.view.View;

public class DepthPageTransformer implements ViewPager.PageTransformer {

	private static float MIN_SCALE = 0.75f;
	@Override
	public void transformPage(View view, float position) {
		// TODO Auto-generated method stub
		int pageWidth = view.getWidth();
		
		if(position < -1){
			view.setAlpha(0);
		} else if (position <= 0) {
			view.setAlpha(1);
			view.setTranslationX(0);
			view.setScaleX(1);
			view.setScaleY(1);
		} else if (position <= 1) {
			view.setAlpha(1 - position);
			view.setTranslationX(pageWidth * -position);
			float scaleFactor = MIN_SCALE + (1 - MIN_SCALE) * (1 - Math.abs(position));
			view.setScaleX(scaleFactor);
			view.setScaleY(scaleFactor);
		} else {
			view.setAlpha(0);
		}
	}

}