Mac 进度条／菊花加载视图

NSProgressIndicator *indicator = [[NSProgressIndicator alloc]initWithFrame:CGRectMake(150, 100, 40, 40)]; 

indicator.style = NSProgressIndicatorSpinningStyle; //这种方式只是给背景rect添加了背景色。indicator.wantsLayer = YES; 

indicator.layer.backgroundColor = [NSColor cyanColor].CGColor;    indicator.controlSize = NSControlSizeRegular;    

[indicator sizeToFit];    

self.indicator = indicator;    [self.window.contentView addSubview:indicator];

原链接：http://blog.csdn.net/lovechris00/article/details/78271045?locationnum=9&fps=1