Android属性动画-简单实例

1.ValueAnimator

//在2000毫秒内，将值从0过渡到1的动画        ValueAnimator anim = ValueAnimator.ofFloat(0f, 1f);        anim.setDuration(2000);        anim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {            @Override            public void onAnimationUpdate(ValueAnimator valueAnimator) {                float currentValue = (float) valueAnimator.getAnimatedValue();                Log.e("tag", "currentValue="+currentValue);                String textStr = ((int) (currentValue * 60)) + "";                text1_tv.setText(textStr);            }        });        anim.start();

Android属性动画-简单实例_第1张图片

2.ObjectAnimator

//将TextView从常规变换成全透明，再从全透明变换成常规        ObjectAnimator anim1 = ObjectAnimator.ofFloat(text2_tv, "alpha", 1f, 0f, 1f);        anim1.setDuration(3000);        anim1.start();        //将TextView进行一次360度的旋转        ObjectAnimator anim2 = ObjectAnimator.ofFloat(text2_tv, "rotation", 0f, 360f);        anim2.setDuration(3000);        anim2.start();        //将TextView先向左移出屏幕，然后再移动回来        float curTranslationX = text2_tv.getTranslationX();        ObjectAnimator anim3 = ObjectAnimator.ofFloat(text2_tv, "translationX", curTranslationX, -500f, curTranslationX);        anim3.setDuration(3000);        anim3.start();        //将TextView在垂直方向上放大3倍再还原        ObjectAnimator anim4 = ObjectAnimator.ofFloat(text2_tv, "scaleY", 1f, 3f, 1f);        anim4.setDuration(5000);        anim4.start();

Android属性动画-简单实例_第2张图片

3.组合动画

//让TextView先从屏幕外移动进屏幕，然后开始旋转360度，旋转的同时进行淡入淡出操作        ObjectAnimator moveIn = ObjectAnimator.ofFloat(text3_tv, "translationX", -500f, 0f);        ObjectAnimator rotate = ObjectAnimator.ofFloat(text3_tv, "rotation", 0f, 360f);        ObjectAnimator fadeInOut = ObjectAnimator.ofFloat(text3_tv, "alpha", 1f, 0f, 1f);        AnimatorSet animSet = new AnimatorSet();        animSet.play(rotate).with(fadeInOut).after(moveIn);        animSet.setDuration(5000);        animSet.start();

Android属性动画-简单实例_第3张图片

posted @ 2019-05-15 14:41 chenzheng8975 阅读( ...) 评论( ...) 编辑收藏

Android属性动画-简单实例

Android属性动画-简单实例

1.ValueAnimator

2.ObjectAnimator

3.组合动画

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