viewpager怎么添加滑动animation效果？

[fghnn]

我想要在viewpager左右切换的时候添加渐变的滑动效果，怎么添加呢？修改源码也可以

[半棵树]

重写viewpager

[fghnn]

引用 1 楼 banketree 的回复:

重写viewpager

这样太麻烦

[liuguoqing2]

渐变的滑动效果是什么样的？清楚点

[傲慢的上校]

可能需要重写了吧。。。

[chuanyunglin]

新版的 android-support-v4.jar 針對 ViewPager 多了一個 interface 可以客製化切換頁面時的動畫. 可參考官方的網頁, 裡面有兩個例子. http://developer.android.com/training/animation/screen-slide.html

[Oo_Oo_]

重写，必须的

[指间绕温柔]

楼主你的问题解决了吗 能教下我吗

[无盐andy]

一起分享下啊~~~~~~~~

[j_f0001]

	
		viewPager=(ViewPager)this.findViewById(R.id.viewPager);
		
		PageTransformer pageTransformer=new PageTransformer() {
			
			@Override
			public void transformPage(View arg0, float arg1) {
				arg0.setAnimation(AnimationUtils.loadAnimation(ViewPagerActivity.this, android.R.anim.slide_out_right));
			}
		};
		
		viewPager.setPageTransformer(true, pageTransformer);

[j_f0001]

还有官方的一段代码，你参考一下，改改能实现你的功能

@SuppressLint("NewApi")
	public class ZoomOutPageTransformer implements ViewPager.PageTransformer {     
		private static final float MIN_SCALE = 0.85f;     
		private static final float MIN_ALPHA = 0.5f;     
		@SuppressLint("NewApi")
		public void transformPage(View view, float position) 
		{        
			int pageWidth = view.getWidth();        
			int pageHeight = view.getHeight();   
			Log.d("dd",view.getTag()+"  pageWidth:"+pageWidth+"  pageHeight:"+pageHeight+" position:"+position);
			if (position < -1) { // [-Infinity,-1)             // This page is way off-screen to the left.             
				view.setAlpha(0);         
			} else if (position <= 1) { // [-1,1]             // Modify the default slide transition to shrink the page as well             
				float scaleFactor = Math.max(MIN_SCALE, 1 - Math.abs(position));            
				float vertMargin = pageHeight * (1 - scaleFactor) / 2;             
				float horzMargin = pageWidth * (1 - scaleFactor) / 2;            
				if (position < 0) {                
					view.setTranslationX(horzMargin - vertMargin / 2);           
				} 
				else {                
					view.setTranslationX(-horzMargin + vertMargin / 2);            
				}              // Scale the page down (between MIN_SCALE and 1)             
				view.setScaleX(scaleFactor);            
				view.setScaleY(scaleFactor);              // Fade the page relative to its size.             
				view.setAlpha(MIN_ALPHA +(scaleFactor - MIN_SCALE) / (1 - MIN_SCALE) * (1 - MIN_ALPHA));       
			} else { // (1,+Infinity]             // This page is way off-screen to the right.            
				view.setAlpha(0);        
			} 
		}
	}

[DrSmart]

注意楼上说的都是属性动画，在android 3.0后才能支持

[_周星星]

pager.setPageTransformer(true, new ViewPagerTransformer());//设置滑动时的动画效果

[_周星星]

public class ViewPagerTransformer implements ViewPager.PageTransformer { private static final float MIN_SCALE = 0.85f; private static final float MIN_ALPHA = 0.5f; @SuppressLint("NewApi") public void transformPage(View view, float position) { int pageWidth = view.getWidth(); int pageHeight = view.getHeight(); Log.d("dd",view.getTag()+" pageWidth:"+pageWidth+" pageHeight:"+pageHeight+" position:"+position); if (position < -1) { // [-Infinity,-1) // This page is way off-screen to the left. view.setAlpha(0); } else if (position <= 1) { // [-1,1] // Modify the default slide transition to shrink the page as well float scaleFactor = Math.max(MIN_SCALE, 1 - Math.abs(position)); float vertMargin = pageHeight * (1 - scaleFactor) / 2; float horzMargin = pageWidth * (1 - scaleFactor) / 2; if (position < 0) { view.setTranslationX(horzMargin - vertMargin / 2); } else { view.setTranslationX(-horzMargin + vertMargin / 2); } // Scale the page down (between MIN_SCALE and 1) view.setScaleX(scaleFactor); view.setScaleY(scaleFactor); // Fade the page relative to its size. view.setAlpha(MIN_ALPHA +(scaleFactor - MIN_SCALE) / (1 - MIN_SCALE) * (1 - MIN_ALPHA)); } else { // (1,+Infinity] // This page is way off-screen to the right. view.setAlpha(0); } } }