参考http://www.cnblogs.com/purple-sweet-pottoes/p/5569554.html
常用的分类方法
// UIImage分类
+ (UIImage *)imageWithIcon:(NSString *)iconCode size:(NSUInteger)size color:(UIColor *)color {
CGSize imageSize = CGSizeMake(size, size);
UIGraphicsBeginImageContextWithOptions(imageSize, NO, [[UIScreen mainScreen] scale]);
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, size, size)];
label.font = [UIFont fontWithName:@"icomoon" size:size];
label.text = iconCode;
if (color) {
label.textColor = color;
}
[label.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *retImage = UIGraphicsGetImageFromCurrentImageContext();
return retImage;
}
+ (UIImage *)imageWithIcon:(NSString *)iconCode inFont:(NSString *)fontName size:(NSUInteger)size color:(UIColor *)color {
CGSize imageSize = CGSizeMake(size, size);
UIGraphicsBeginImageContextWithOptions(imageSize, NO, [[UIScreen mainScreen] scale]);
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, size, size)];
label.font = [UIFont fontWithName:fontName size:size];
label.text = iconCode;
if (color) {
label.textColor = color;
}
[label.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *retImage = UIGraphicsGetImageFromCurrentImageContext();
return retImage;
}
// UILabel分类
- (void)labelIconWithSize:(CGFloat)size text:(NSString *)text color:(UIColor *)color
{
self.font = [UIFont fontWithName:@"icomoon" size:size];
self.text = text;
[self setTextColor:color];
}
