Android实现简单旋转动画

public void startAnimation(Animation animation)

public RotateAnimation(float fromDegrees, float toDegrees) {
    mFromDegrees = fromDegrees;
    mToDegrees = toDegrees;
    mPivotX = 0.0f;
    mPivotY = 0.0f;
}

RotateAnimation ta = new RotateAnimation(0, 360);
// 设置动画播放的时间
ta.setDuration(1000);
// 开始播放动画
iv.startAnimation(ta);

    public RotateAnimation(float fromDegrees, float toDegrees, float pivotX, float pivotY) {
        mFromDegrees = fromDegrees;
        mToDegrees = toDegrees;

        mPivotXType = ABSOLUTE;
        mPivotYType = ABSOLUTE;
        mPivotXValue = pivotX;
        mPivotYValue = pivotY;
        initializePivotPoint();
    }

RotateAnimation ta = new RotateAnimation(0, 360, iv.getWidth() / 2, iv.getHeight() / 2);
// 设置动画播放的时间
ta.setDuration(1000);
// 开始播放动画
iv.startAnimation(ta);

public RotateAnimation(float fromDegrees, float toDegrees, int pivotXType, float pivotXValue, int pivotYType, float pivotYValue) {
   mFromDegrees = fromDegrees;
   mToDegrees = toDegrees;

   mPivotXValue = pivotXValue;
   mPivotXType = pivotXType;
   mPivotYValue = pivotYValue;
   mPivotYType = pivotYType;
   initializePivotPoint();
}

// 创建旋转的动画对象
RotateAnimation ta = new RotateAnimation(0, 360, RotateAnimation.RELATIVE_TO_SELF, 0.5f, RotateAnimation.RELATIVE_TO_SELF, 0.5f);
// 设置动画播放的时间
ta.setDuration(1000);
// 开始播放动画
iv.startAnimation(ta);

public void setRepeatCount(int repeatCount) {
    if (repeatCount < 0) {
        repeatCount = INFINITE;
    }
    mRepeatCount = repeatCount;
}

sa.setRepeatCount(2);

sa.setRepeatCount(Animation.INFINITE);

public void setRepeatMode(int repeatMode) {
    mRepeatMode = repeatMode;
}

sa.setRepeatMode(ScaleAnimation.REVERSE);

rotateAnimation.setAnimationListener(new AnimationListener() {

            @Override
            public void onAnimationStart(Animation animation) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onAnimationRepeat(Animation animation) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onAnimationEnd(Animation animation) {
                // TODO Auto-generated method stub

            }
 });