按钮旋转45度然后复原

标签：

      //默认没旋转

        open=NO; 

        if (open==YES) {
            [UIView animateWithDuration:0.03 delay:0 options:UIViewAnimationOptionCurveLinear animations:^{
                btn1.transform = CGAffineTransformIdentity;
            } completion:^(BOOL finished) {
                open=NO;
            }];
        } else {
            [UIView animateWithDuration:0.03 delay:0 options:UIViewAnimationOptionCurveLinear animations:^{
                btn1.transform = CGAffineTransformMakeRotation(45.0f * (M_PI / 180.0f));
            } completion:^(BOOL finished) {
                open=YES;
            }];

        }

按钮旋转45度然后复原

标签：

原文地址：http://www.cnblogs.com/huangzs/p/4699683.html