[iOS] Attributed string for UIButton

AttrStrForButton

NSMutableAttributedString *attributeString = [[NSMutableAttributedString alloc] initWithString:@"test1"];
[attributeString addAttribute:NSForegroundColorAttributeName value:[UIColor grayColor] range:NSMakeRange(0, [attributeString length])];
[attributeString addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:15.0f] range:NSMakeRange(0, [attributeString length])];
    
NSMutableAttributedString *attributeNewString = [[NSMutableAttributedString alloc] initWithString:@"test2"];
[attributeString appendAttributedString:attributeNewString];

self.testButton.titleLabel.attributedText = attributeString;

// Image attachment
NSTextAttachment *imageAttachment = [[NSTextAttachment alloc] init];
imageAttachment.bounds = CGRectMake(0, 0, 40, 40);
imageAttachment.image = [UIImage imageNamed:@"partly_cloudy"];
    
NSAttributedString *attachmentString = [NSAttributedString attributedStringWithAttachment:imageAttachment];
[attributeString appendAttributedString:attachmentString];