Android属性动画的基本用法

1.ObjectAnimator

        ImageView iv = (ImageView) findViewById(R.id.iv);
        oa1 = ObjectAnimator.ofFloat(iv, "translationX", -100, 2000);
        oa1.setDuration(1000);
        oa1.setRepeatCount(2);
        oa1.setInterpolator(new AccelerateDecelerateInterpolator());
        oa1.setRepeatMode(ObjectAnimator.REVERSE);
        oa1.start();
        oa2 = ObjectAnimator.ofFloat(iv, "translationY", 100, -100);
        oa3 = ObjectAnimator.ofFloat(iv, "scaleX", 0.5f, 1.3f);
        oa4 = ObjectAnimator.ofFloat(iv, "scaleY", .1f, 0.5f,1.5f);
        oa5 = ObjectAnimator.ofFloat(iv, "alpha", 0.4f, 0.7f,0.2f,1f);
        oa6 = ObjectAnimator.ofFloat(iv, "rotation", -90, 200,-500,300);
        oa6.setDuration(1000);
        oa7 = ObjectAnimator.ofFloat(iv, "rotationX", -90, 200);
        oa7.setDuration(1000);
        oa8 = ObjectAnimator.ofFloat(iv, "rotationY", -90, 180);
        oa8.setDuration(1000);
        oa9 = ObjectAnimator.ofFloat(iv, "x", 100,200);
        oa9.setDuration(1000);
        oa10 = ObjectAnimator.ofFloat(iv, "y", 300,500);
        oa10.setDuration(1000);
        oa11 = ObjectAnimator.ofInt(iv, "backgroundColor", Color.argb
                                    (200,130,180,150),Color.argb(200,80,50,70));
        oa11.setDuration(1000);

2.ValueAnimator

        ValueAnimator va1 = ValueAnimator.ofFloat(0,1);
        va1.setDuration(3000);
        va1.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
            @Override
            public void onAnimationUpdate(ValueAnimator animation) {
                float value = (float) animation.getAnimatedValue();
                iv.setAlpha(value);
                iv.setScaleX(value);
                iv.setRotation(value*360);
            }
        });
        va1.start();
        ValueAnimator va2 = ValueAnimator.ofInt(0,300,100);

3 AnimatorSet

        AnimatorSet set1 = new AnimatorSet();
        set1.setDuration(300);
        set1.setTarget(iv);
        set1.playTogether(oa2,oa3,oa4,oa5);
        set1.start();

        AnimatorSet set2 = new AnimatorSet();
        set2.setTarget(iv);
        set2.play(oa6).before(oa7).with(oa8).with(oa9).with(oa10).after(oa11);
        set2.start();

4.PropertyValuesHolder

        PropertyValuesHolder pr1 = PropertyValuesHolder.ofFloat("translationX",100,     
                                                                   -300,500);
        PropertyValuesHolder pr2 = PropertyValuesHolder.ofFloat("alpha",0.3f,1f);
        PropertyValuesHolder pr3 = PropertyValuesHolder.ofFloat("rotationX",-90,135);
        ObjectAnimator oa12 = ObjectAnimator.ofPropertyValuesHolder(iv,pr1,pr2,pr3);
        oa12.setDuration(2000);
        oa12.start();

        ValueAnimator va3 = ValueAnimator.ofPropertyValuesHolder(pr1,pr2,pr3);
        va3.setDuration(2000);
        va3.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
            @Override
            public void onAnimationUpdate(ValueAnimator animation) {
                float translationX = (float) animation.getAnimatedValue("translationX");
                float alpha = (float) animation.getAnimatedValue("alpha");
                float rotationX = (float) animation.getAnimatedValue("rotationX");
                iv.setTranslationX(translationX);
                iv.setAlpha(alpha);
                iv.setRotationX(rotationX);
            }
        });
        va3.start();

5.ViewPropertyAnimator

         iv.animate().setDuration(3000).scaleX(0.5f).scaleY(1.3f).translationX(300).rotation(90).start();

在res文件夹下创建一个animator文件夹

ValueAnimator
新建一个value.xml文件

<?xml version="1.0" encoding="utf-8"?>
<animator xmlns:android="http://schemas.android.com/apk/res/android"
    android:valueFrom="0.1f"
    android:valueTo="1f"
    android:valueType="floatType"
    android:duration="3000"
    />

ObjectAnimator
新建一个object.xml文件

<?xml version="1.0" encoding="utf-8"?>
<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
    android:propertyName="backgroundColor"
    android:repeatCount="infinite"
    android:duration="300"
    android:repeatMode="reverse"
    android:valueFrom="#456412"
    android:valueTo="#780054"
    />

AnimatorSet
新建一个animatorSet.xml文件

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:ordering="together">
    <objectAnimator
        android:duration="500"
        android:valueType="floatType"
        android:propertyName="x"
        android:valueFrom="0"
        android:valueTo="300dp"
        />

    <set android:ordering="sequentially">
        <objectAnimator
            android:propertyName="alpha"
            android:valueFrom="0"
            android:valueTo="1f"
            android:valueType="floatType"
            android:duration="500"
            />

        <objectAnimator
            android:propertyName="rotation"
            android:valueType="floatType"
            android:valueFrom="-90"
            android:valueTo="180"
            android:duration="1000"
            />
    </set>
</set>

在代码中使用

        ObjectAnimator oa13 = (ObjectAnimator) AnimatorInflater.loadAnimator 
                      (this,R.animator.object);

        ValueAnimator va4 = (ValueAnimator)AnimatorInflater.loadAnimator
                       (this,R.animator.value);
        
        AnimatorSet set3 = (AnimatorSet) AnimatorInflater.loadAnimator                       
                       (this,R.animator.animatorSet);

PS.属性动画是一个很强大的动画库，卫星菜单、抽屉等效果都可以通过属性动画来实现，这些只是最基本的使用方法而已。
再PS. 如果想进一步深入了解属性动画请移步启舰、郭霖、张鸿洋、任玉刚等大神的博客