iOS关于判断输入的密码是否合法,价格动态判断合法性

概述iOS关于判断输入的密码是否合法,价格动态判断合法性

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一:正则表达式再用#pragma 正则匹配手机号+ (BOol)checkTelNumber:(Nsstring *) telNumber{     Nsstring *pattern = @^ 1 +[ 3578 ]+\d{ 9 };     nspredicate *pred = [nspredicate predicateWithFormat: @SELF MATCHES %@,pattern];     BOol isMatch = [pred evaluateWithObject:telNumber];     return isMatch;}  #pragma 正则匹配用户密码 6 - 18 位数字和字母组合+ (BOol)checkPassword:(Nsstring *) password{     Nsstring *pattern = @^(?![ 0 - 9 ]+$)(?![a-zA-Z]+$)[a-zA-Z0- 9 ]{ 6,18 };     nspredicate *pred = [nspredicate predicateWithFormat: @SELF MATCHES %@,pattern];     BOol isMatch = [pred evaluateWithObject:password];     return isMatch;      } #pragma 正则匹配用户姓名,20 位的中文或英文+ (BOol)checkUsername : (Nsstring *) username{     Nsstring *pattern = @^[a-zA-Z一-龥]{ 1,20 };     nspredicate *pred = [nspredicate predicateWithFormat: @SELF MATCHES %@,pattern];     BOol isMatch = [pred evaluateWithObject:username];     return isMatch;      }  #pragma 正则匹配用户身份z号 15 或 18 位+ (BOol)checkUserIDCard: (Nsstring *) IDCard{     Nsstring *pattern = @(^[ 0 - 9 ]{ 15 }$)|([ 0 - 9 ]{ 17 }([ 0 - 9 ]|X)$);     nspredicate *pred = [nspredicate predicateWithFormat: @SELF MATCHES %@,pattern];     BOol isMatch = [pred evaluateWithObject:IDCard];     return isMatch;} #pragma 正则匹员工号,12 位的数字+ (BOol)checkEmployeeNumber : (Nsstring *) number{     Nsstring *pattern = @^[ 0 - 9 ]{ 12 };           nspredicate *pred = [nspredicate predicateWithFormat: @SELF MATCHES %@,pattern];     BOol isMatch = [pred evaluateWithObject:number];     return isMatch;      } #pragma 正则匹配URL+ (BOol)checkURL : (Nsstring *) url{     Nsstring *pattern = @^[ 0 -9A-Za-z]{ 1,50 };     nspredicate *pred = [nspredicate predicateWithFormat: @SELF MATCHES %@,pattern];     BOol isMatch = [pred evaluateWithObject:url];     return isMatch;      }二 Textfiled的代理方法//////// 特殊字符的限制输入，价格金额的有效性判断#define myDotNumbers     @"0123456789.\n"#define myNumbers          @"0123456789\n"-(voID) createTextfiled {    textfIEld1_ = [[UITextFIEld alloc] initWithFrame:CGRectMake(0,20,20)];    textfIEld1_.delegate = self;    [self addSubvIEw:textfIEld1_];     textfIEld2_ = [[UITextFIEld alloc] initWithFrame:CGRectMake(0,20)];    textfIEld2_.delegate = self;    [self addSubvIEw:textfIEld2_];     textfIEld3_ = [[UITextFIEld alloc] initWithFrame:CGRectMake(0,20)];    textfIEld3_.delegate = self;    [self addSubvIEw:textfIEld3_];}-(voID)showMyMessage:(Nsstring*)aInfo {    UIAlertVIEw *alertVIEw = [[UIAlertVIEw alloc] initWithTitle:@"提示" message:aInfo delegate:self cancelbuttonTitle:@"确定" otherbuttonTitles:nil,nil];    [alertVIEw show];    [alertVIEw release];}- (BOol)textFIEld:(UITextFIEld *)textFIEld shouldChangeCharactersInRange:(NSRange)range replacementString:(Nsstring *)string {    NSCharacterSet *cs;    if ([textFIEld isEqual:textfIEld1_]) {        cs = [[NSCharacterSet characterSetWithCharactersInString:myNumbers] invertedSet];        Nsstring *filtered = [[string componentsSeparatedByCharactersInSet:cs] componentsJoinedByString:@""];        BOol basicTest = [string isEqualToString:filtered];        if (!basicTest) {            [self showMyMessage:@"只能输入数字"];            return NO;        }    }    else if ([textFIEld isEqual:textfIEld2_]) {        cs = [[NSCharacterSet characterSetWithCharactersInString:myNumbers] invertedSet];        Nsstring *filtered = [[string componentsSeparatedByCharactersInSet:cs] componentsJoinedByString:@""];        BOol basicTest = [string isEqualToString:filtered];        if (!basicTest) {            [self showMyMessage:@"只能输入数字"];            return NO;        }    }    else if ([textFIEld isEqual:textfIEld3_]) {        NSUInteger nDotLoc = [textFIEld.text rangeOfString:@"."].location;        if (NSNotFound == nDotLoc && 0 != range.location) {            cs = [[NSCharacterSet characterSetWithCharactersInString:myDotNumbers] invertedSet];        }        else {            cs = [[NSCharacterSet characterSetWithCharactersInString:myNumbers] invertedSet];        }        Nsstring *filtered = [[string componentsSeparatedByCharactersInSet:cs] componentsJoinedByString:@""];        BOol basicTest = [string isEqualToString:filtered];        if (!basicTest) {            [self showMyMessage:@"只能输入数字和小数点"];            return NO;        }        if (NSNotFound != nDotLoc && range.location > nDotLoc + 3) {            [self showMyMessage:@"小数点后最多三位"];            return NO;        }    }    return YES;}

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