Animation(1、Tween Animation)
Android的补间动画,主要例子如下:
mImageView = (ImageView)findViewById(R.id.imageView1); //透明度动画 AnimationSet animationSet = new AnimationSet(true); //设置透明度 AlphaAnimation alphaAnimation = new AlphaAnimation(0,1); //通用API alphaAnimation.setDuration(2500); //设置持续时间 alphaAnimation.setStartOffset(1000); //设置延迟 alphaAnimation.setRepeatCount(2); //设置重复次数 //动画参数也可以设置在资源文件alpha.xml中 /*Animation animation = AnimationUtils.loadAnimation( Animation1Activity.this, R.anim.alpha);*/ //动画效果是可以叠加的!! //animationSet.addAnimation(alphaAnimation); //旋转动画 //参数1:开始旋转角度 //参数2:结束旋转角度 //参数3、4、5、6:设置旋转圆心,此例子中为中心,即自身长宽的一半处 RotateAnimation rotateAnimation = new RotateAnimation(0, 360, Animation.RELATIVE_TO_SELF,0.5f, Animation.RELATIVE_TO_SELF,0.5f); rotateAnimation.setDuration(5000); //差值器Interpolator,用以定义动画速率的变化 animationSet.setInterpolator(new AccelerateInterpolator()); animationSet.addAnimation(rotateAnimation); //伸缩动画 //参数1~2:x轴的初始和结束长度,1f为自身长度; //参数3~4:y轴的初始和结束长度,1f为自身长度; //参数5~8:伸缩的轴心位置,类似旋转的圆心 ScaleAnimation scaleAnimation = new ScaleAnimation( 0, 1f,0,1f, Animation.RELATIVE_TO_SELF,1f, Animation.RELATIVE_TO_SELF,1f); scaleAnimation.setDuration(5000); //animationSet.addAnimation(scaleAnimation); //移动动画 //参数1,2:设置x轴开始和结束的位置; //参数3,4:设置y轴开始和结束的位置 TranslateAnimation translateAnimation = new TranslateAnimation( Animation.RELATIVE_TO_SELF,0f, Animation.RELATIVE_TO_SELF,0.5f, Animation.RELATIVE_TO_SELF,0f, Animation.RELATIVE_TO_SELF,0.5f); translateAnimation.setDuration(1000); //animationSet.addAnimation(translateAnimation); mImageView.startAnimation(animationSet);