安卓吸引用戶抖動動畫

視圖 抖動動畫，通過改變scale屬性，以及旋轉來實現。
shakeFactor參數爲抖動旋轉幅度，

/**
* 抖動動畫
* @param view
* @param shakeFactor
* @return
*/
public static ObjectAnimator shakeAnim(View view, float shakeFactor) {

    PropertyValuesHolder pvhScaleX = PropertyValuesHolder.ofKeyframe(View.SCALE_X,
            Keyframe.ofFloat(0f, 1f),
            Keyframe.ofFloat(.1f, .9f),
            Keyframe.ofFloat(.2f, .9f),
            Keyframe.ofFloat(.3f, 1.1f),
            Keyframe.ofFloat(.4f, 1.1f),
            Keyframe.ofFloat(.5f, 1.1f),
            Keyframe.ofFloat(.6f, 1.1f),
            Keyframe.ofFloat(.7f, 1.1f),
            Keyframe.ofFloat(.8f, 1.1f),
            Keyframe.ofFloat(.9f, 1.1f),
            Keyframe.ofFloat(1f, 1f)
    );

    PropertyValuesHolder pvhScaleY = PropertyValuesHolder.ofKeyframe(View.SCALE_Y,
            Keyframe.ofFloat(0f, 1f),
            Keyframe.ofFloat(.1f, .9f),
            Keyframe.ofFloat(.2f, .9f),
            Keyframe.ofFloat(.3f, 1.1f),
            Keyframe.ofFloat(.4f, 1.1f),
            Keyframe.ofFloat(.5f, 1.1f),
            Keyframe.ofFloat(.6f, 1.1f),
            Keyframe.ofFloat(.7f, 1.1f),
            Keyframe.ofFloat(.8f, 1.1f),
            Keyframe.ofFloat(.9f, 1.1f),
            Keyframe.ofFloat(1f, 1f)
    );
    PropertyValuesHolder pvhRotate = PropertyValuesHolder.ofKeyframe(View.ROTATION,
            Keyframe.ofFloat(0f, 0f),
            Keyframe.ofFloat(.1f, -3f * shakeFactor),
            Keyframe.ofFloat(.2f, -3f * shakeFactor),
            Keyframe.ofFloat(.3f, 3f * shakeFactor),
            Keyframe.ofFloat(.4f, -3f * shakeFactor),
            Keyframe.ofFloat(.5f, 3f * shakeFactor),
            Keyframe.ofFloat(.6f, -3f * shakeFactor),
            Keyframe.ofFloat(.7f, 3f * shakeFactor),
            Keyframe.ofFloat(.8f, -3f * shakeFactor),
            Keyframe.ofFloat(.9f, 3f * shakeFactor),
            Keyframe.ofFloat(1f, 0)
    );
    return ObjectAnimator.ofPropertyValuesHolder(view, pvhScaleX, pvhScaleY, pvhRotate).
            setDuration(1300);
}