/** 設(shè)置圓形圖片(放到分類中使用) */

- (UIImage *)cutCircleImage {

UIGraphicsBeginImageContextWithOptions(self.size, NO, 0.0);

// 獲取上下文

CGContextRef ctr = UIGraphicsGetCurrentContext();

// 設(shè)置圓形

CGRect rect = CGRectMake(0, 0, self.size.width, self.size.height);

CGContextAddEllipseInRect(ctr, rect);

// 裁剪

CGContextClip(ctr);

// 將圖片畫上去

[self drawInRect:rect];

UIImage *image = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

return image; ?

}