Android 动画（View动画,帧动画,属性动画）详细介绍

 splash = (RelativeLayout)findViewById(R.id.splash); //旋转动画 RotateAnimation rotateAnimation = new RotateAnimation(0,360, Animation.RELATIVE_TO_SELF,0.5f,Animation.RELATIVE_TO_SELF,0.5f); rotateAnimation.setDuration(2000); rotateAnimation.setFillAfter(true); //缩放动画 ScaleAnimation scaleAnimation = new ScaleAnimation(0,1,0,1, Animation.RELATIVE_TO_SELF,0.5f,Animation.RELATIVE_TO_SELF,0.5f); scaleAnimation.setDuration(2000); scaleAnimation.setFillAfter(true); //渐变动画 AlphaAnimation alphaAnimation = new AlphaAnimation(0.2f,1.0f); alphaAnimation.setDuration(2000); alphaAnimation.setFillAfter(true); //平移动画 TranslateAnimation translateAnimation = newTranslateAnimation (0,0,100,100); translateAnimation.setDuration(2000); translateAnimation.setFillAfter(true); //动画集合 AnimationSet animationSet = new AnimationSet(true); animationSet.addAnimation(rotateAnimation); animationSet.addAnimation(scaleAnimation); animationSet.addAnimation(alphaAnimation); animationSet.addAnimation(translateAnimation); //启动动画 plash.startAnimation(animationSet); 

 //res/anim/anim/layout_anim.xml  //res/anim/anim/layout_anim_item.xml   //表示所有子元素共享该插值器   

 //res/anim/tran_in   

 //res/drawable/myanimation.xml   //false为循环播放，true为类似于View动画的setFillAfter效果    //在代码里加载动画设置并启动动画 view.setBackgroundResource(R.drawable.myanimation.xml); (AnimationDrawable)view.getBackground.start(); 

 view.setTranslationX(x);//3.0以后 ViewHelper.setTranslationX(view,x);//3.0以前通过NineOldAndroid库实现 

 ValueAnimator只定义和执行动画流程，并没有直接操作属性值的逻辑，需要添加动画更新的监听，并在onAnimationUpdate()中执行自定义的动画逻辑。 [java] view plain copy 在CODE上查看代码片派生到我的代码片 ValueAnimator animator = ValueAnimator.ofInt(1, 100); //定义动画，相当于1秒内数100个数 animator.addUpdateListener(new AnimatorUpdateListener() { @Override public void onAnimationUpdate(ValueAnimator animation){ float fraction = animation.getAnimatedFraction();//动画进度值0-1 //整型估值器帮我们计算了start+(end-strat)*fraction，并设置给控件的宽度 view.getLayoutParams().width = new IntEvaluator().evaluate(fraction,start,end) //不需要set方法 view.requestLayout(); } }); animator.setDuration(1000).start(); 

 //x轴方向缩放的例子 ObjectAnimator animator = ObjectAnimator.ofFloat(view,”scaleX”,2.0f); animator.setDuration(1000); animator.setStartDelay(1000); animator.start(); 

 ViewWrapper wrapper = new ViewWrapper(view); ObjectAnimator.ofInt(view,”width”,200).setDuration(1000).start(); private static class ViewWrapper{ private View myView; public ViewWrapper(View view){ myView = view; } public int getWidth(){ return myView.getLayoutParams().width; } public int setWidth(int width){ myView.getLayoutParams().width = width; myView.requestLayout(); } } 

 //x轴方向缩放的例子，效果同3.3 ViewPropertyAnimation.animate(view).scaleX(2.0f).setDuration(1000) .setInterpolator(new OvershootInterpolator()) .setStartDelay(1000).start(); 

 ObjectAnimator objectAnimator1= ObjectAnimator.ofFloat(view, "alpha", 1.0f, 0f); ObjectAnimator objectAnimator2= ObjectAnimator.ofFloat(view, "translationY", 0f, 30f); ObjectAnimator objectAnimator3= ObjectAnimator.ofFloat(view, "translationX", 0f, 30f); AnimatorSet animatorSet = new AnimatorSet(); animatorSet.setDuration(5000); animatorSet.setInterpolator(new LinearInterpolator()); // animatorSet.playTogether(objectAnimator1, objectAnimator2. objectAnimator3); //三个动画同时执行 // 12同时执行，3接着执行 animatorSet.play(objectAnimator1).with(objectAnimator2); animatorSet.play(objectAnimator3).after(objectAnimator2); animatorSet.start(); 

 public class AccelerateDecelerateInterpolator extends BaseInterpolator implements NativeInterpolatorFactory { ...... public float getInterpolation(float input) { return (float)(Math.cos((input + 1) * Math.PI) / 2.0f) + 0.5f; } ...... } 

 //监听动画完成 animationSet.setAnimationListener(new Animation.AnimationListener() { @Override public void onAnimationStart(Animation animation) {} @Override public void onAnimationEnd(Animation animation) {} @Override public void onAnimationRepeat(Animation animation) {} @Override public void onAnimationCancel(Animation animation) {} });