一个简单的clock框架用法简介ClockView*clockView=[[ClockViewalloc]initWithFrame:CGRectMake(0,200,200,200)];[self.viewaddSubview:clockView];[clockViewstart];........[clockViewstop];[clockViewrelease];变换秒针旋转样式clock.secRoll=NO/YES;样式设置方法[selfsetClockBackgroundImage:[UIImageimageNamed:@"xxx"