NSMutableAttributedString 文字处理 。。。

#pragma mark - 文本处理
+ (NSMutableAttributedString *)attributeStringWith:(NSMutableAttributedString *)attributeString andAttributes:(NSDictionary *)attribute
{
    NSMutableArray *rangeArray = [NSMutableArray array];
    for(NSInteger i=0; i < attributeString.length; i++)
    {
        NSRange range = NSMakeRange(i, 1);
        NSString *str = [attributeString.string substringWithRange:range];
        NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",@"^[0-9]"];
        if([predicate evaluateWithObject:str])
        {
            [rangeArray addObject:[NSValue valueWithRange:range]];
        }
    }
    
//    [rangeArray enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
//        NSRange range = [(NSValue *)obj rangeValue];
//        [attributeString addAttributes:attribute range:range];
//    }];
    
    [rangeArray enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
        NSRange range = [(NSValue *)obj rangeValue];
        [attributeString addAttributes:attribute range:range];
    }];
    
    return attributeString;
}