//建立一個CGAffineTransform  transform物件
    CGAffineTransform  transform; 
    //設定旋轉度數
    transform = CGAffineTransformRotate(manImageView.transform,M_PI/6.0);
    //動畫開始
    [UIView beginAnimations:@"rotate" context:nil ];
    //動畫時常
    [UIView setAnimationDuration:2];
    //新增代理
    [UIView setAnimationDelegate:self];
    //獲取transform的值
    [manImageView setTransform:transform];
    //關閉動畫
    [UIView commitAnimations];