ios 将图片做成圆形

UIImageView * imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"oiuyfdsa.png"]];  

imageView.frame = CGRectMake(20.f, 20.f, 100.f, 100.f);  

imageView.layer.masksToBounds = YES;  

imageView.layer.cornerRadius = 50;  

 

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