openURL打电话

1. 通过正则表达式

2. -(NSString *) formatIdentificationNumber:(NSString *)string

   {

       NSCharacterSet * invalidNumberSet = [NSCharacterSetcharacterSetWithCharactersInString:@"\n_!@#$%^&*()[]{}'\".,<>:;|\\/?+=\t~` "];

       

       NSString  * result  = @"";

       NSScanner * scanner = [NSScannerscannerWithString:string];

       NSString  * scannerResult;

       

       [scanner setCharactersToBeSkipped:nil];

       

       while (![scanner isAtEnd])

       {

           if([scanner scanUpToCharactersFromSet:invalidNumberSetintoString:&scannerResult])

           {

               result = [result stringByAppendingString:scannerResult];

           }

           else

           {

               if(![scanner isAtEnd])

               {

                   [scanner setScanLocation:[scannerscanLocation]+1];

               }

           }

       }

       

       return result;

   }

   
   

   - (NSString *)makeCall:(NSString *)number

   {

       NSString *txt = number;

       NSCharacterSet *doNotWant = [NSCharacterSetcharacterSetWithCharactersInString:@"-+() *#"];

       txt = [[txt componentsSeparatedByCharactersInSet: doNotWant]componentsJoinedByString: @""];

       txt = [NSString stringWithFormat:@"tel://%@", txt];

       return txt;

   }

找了好久这个代码！终于找到了！

哈哈