objective-c - ios--后台返回信息有字符串和数字组成的，如何获取电话号码，让用户能够点击并且进行拨打？

Question

请教个问题：后台返回的json数据，有字符串和数字组成的信息。如何获取其中的电话号码，让其能够点击并且进行拨打。

Answer 1

After obtaining the json data, use NSString to uniformly accept strings and numbers. When detecting them, the length of mobile phone numbers is generally fixed. That’s it. Finally, after getting this substring, add tel:// and it’s done

Answer 2

-(void)callPhone:(NSString*)phoneNumber{
  NSString *phoneStr=[NSString stringWithFormat:@"tel://%@",phoneNumber];
  NSURL *url=[NSURL URLWithString:phoneStr];
  [[UIApplication sharedApplication] openURL:url];
}

    NSString *string;
    NSString *pattern;

    pattern=@"\d*";

    string=@"s100s110s111jdlfj18203092902lsd";


    NSError *error;
    NSRegularExpression *regex = [[NSRegularExpression alloc] initWithPattern:pattern options:NSRegularExpressionCaseInsensitive error:&error];

    NSLog(@"%@",error);

    [regex enumerateMatchesInString:string options:NSMatchingReportProgress range:NSMakeRange(0, string.length) usingBlock:^(NSTextCheckingResult * _Nullable result, NSMatchingFlags flags, BOOL * _Nonnull stop) {
     if (NSMatchingReportProgress==flags) {

      }else{
        /**
         *  系统内置方法
         */
        if (NSTextCheckingTypePhoneNumber==result.resultType) {
          NSLog(@"%@",[string substringWithRange:result.range]);
        }
        /**
         *  长度为11位的数字串
         */
        if (result.range.length==11) {
          NSLog(@"%@",[string substringWithRange:result.range]);
        }
      }
    }];