public class ShakeAnimation
{
    public boolean mNeedShake = false; //是否要播放抖動動畫，預設否
    private static final int ICON_WIDTH = 80;
    private static final int ICON_HEIGHT = 94;
    private static final float DEGREE_0 = 1.8f;
    private static final float DEGREE_1 = - 2.0f;
    private static final float DEGREE_2 = 2.0f;
    private static final float DEGREE_3 = - 1.5f;
    private static final float DEGREE_4 = 1.5f;
    private static final int ANIMATION_DURATION = 100;
    private int mCount = 0;
    private static final ShakeAnimation instance = new ShakeAnimation();
    private ShakeAnimation(){}
    public static final ShakeAnimation getInstance()
    {
        return instance;
    }

    // 晃動動畫
    public void shakeAnimation(final View v)
    {
        DisplayMetrics dm = new DisplayMetrics();
        float mDensity = dm.density;
        float rotate;
        int c = mCount++ % 5;
        if (c == 0)
        {
            rotate = DEGREE_0;
        }
        else if (c == 1)
        {
            rotate = DEGREE_1;
        }
        else if (c == 2)
        {
            rotate = DEGREE_2;
        }
        else if (c == 3)
        {
            rotate = DEGREE_3;
        }
        else
        {
            rotate = DEGREE_4;
        }
        final RotateAnimation ra1 = new RotateAnimation(rotate, - rotate,
                ICON_WIDTH * mDensity / 2, ICON_HEIGHT * mDensity / 2);
        final RotateAnimation ra2 = new RotateAnimation(- rotate, rotate,
                ICON_WIDTH * mDensity / 2, ICON_HEIGHT * mDensity / 2);

        ra1.setDuration(ANIMATION_DURATION);
        ra2.setDuration(ANIMATION_DURATION);

        // 設定旋轉動畫的監聽
        ra1.setAnimationListener(new Animation.AnimationListener()
        {
            @Override
            public void onAnimationEnd(Animation animation)
            {
                if (mNeedShake)
                {
                    ra1.reset(); // 重置動畫
                    v.startAnimation(ra2); // 第一個動畫結束開始第二個旋轉動畫
                }
            }

            @Override
            public void onAnimationRepeat(Animation animation)
            {
            }

            @Override
            public void onAnimationStart(Animation animation)
            {
            }
        });

        ra2.setAnimationListener(new Animation.AnimationListener()
        {
            @Override
            public void onAnimationEnd(Animation animation)
            {
                if (mNeedShake)
                {
                    ra2.reset();
                    v.startAnimation(ra1);// 第二個動畫結束開始第一個旋轉動畫
                }
            }

            @Override
            public void onAnimationRepeat(Animation animation)
            {
            }

            @Override
            public void onAnimationStart(Animation animation)
            {
            }
        });
        v.startAnimation(ra1);
    }
}