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-(UIImage *)CSImage:(UIImage *)img AddText:(NSString *)text{ UIImageView *view = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, img.size.width, img.size.height)]; view.image = img; UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0,0,0,0)]; [label setNumberOfLines:0]; label.lineBreakMode = UILineBreakModeWordWrap; NSString *s = text; UIFont *font = [UIFont fontWithName:@"Arial" size:12]; CGSize size = CGSizeMake(320,2000); CGSize labelsize = [s sizeWithFont:font constrainedToSize:size lineBreakMode:UILineBreakModeWordWrap]; label.frame = CGRectMake(0,0, labelsize.width, labelsize.height); [view addSubview:label]; return [self convertViewToImage:view];}-(UIImage*)convertViewToImage:(UIView*)v{ CGSize s = v.bounds.size; UIGraphicsBeginImageContextWithOptions(s, NO, [UIScreen mainScreen].scale); CGContextRef context = UIGraphicsGetCurrentContext(); [v.layer renderInContext:context]; UIImage *image = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); v.layer.contents = nil; return image; }标签：
原文地址：http://www.cnblogs.com/faithful/p/4999838.html
