IOS正则表达式判断输入类型(整理)

在开发过程中，有时需要对用户输入的类型做判断，最常见是在注册页面即用户名和密码，代码整理如下：

只能为中文

-(BOOL)onlyInputChineseCharacters:(Nsstring*)string{
 Nsstring *zhString = @"[\u4e00-\u9fa5]+";
 nspredicate *predicate = [nspredicate predicateWithFormat:@"SELF MATCHES %@",zhString];
 BOOL inputString = [predicate evaluateWithObject:string];
 return inputString;
}

只能为数字

- (BOOL)onlyInputTheNumber:(Nsstring*)string{
 Nsstring *numString =@"[0-9]*";
 nspredicate *predicate = [nspredicate predicateWithFormat:@"SELF MATCHES %@",numString];
 BOOL inputString = [predicate evaluateWithObject:string];
 return inputString;
}

只能为小写

- (BOOL)onlyInputLowercaseLetter:(Nsstring*)string{
 Nsstring *regex =@"[a-z]*";
 nspredicate *predicate = [nspredicate predicateWithFormat:@"SELF MATCHES %@",regex];
 BOOL inputString = [predicate evaluateWithObject:string];
 return inputString;
}

*只能为大写

- (BOOL)onlyInputACapital:(Nsstring*)string{
 Nsstring *regex =@"[A-Z]*";
 nspredicate *predicate = [nspredicate predicateWithFormat:@"SELF MATCHES %@",regex];
 BOOL inputString = [predicate evaluateWithObject:string];
 return inputString;
}

允许大小写

- (BOOL)InputCapitalAndLowercaseLetter:(Nsstring*)string{
 Nsstring *regex =@"[a-zA-Z]*";
 nspredicate *predicate = [nspredicate predicateWithFormat:@"SELF MATCHES %@",regex];
 BOOL inputString = [predicate evaluateWithObject:string];
 return inputString;
}

允许含大小写或数字(不限字数)

- (BOOL)inputLettersOrNumbers:(Nsstring*)string{
 Nsstring *regex =@"[a-zA-Z0-9]*";
 nspredicate *predicate = [nspredicate predicateWithFormat:@"SELF MATCHES %@",regex];
 BOOL inputString = [predicate evaluateWithObject:string];
 return inputString;
}

允许含大小写或数字(限字数)

-(BOOL)inputNumberOrLetters:(Nsstring*)name {
 Nsstring *userNameRegex = @"^[A-Za-z0-9]{6,20}+$";
 nspredicate *userNamePredicate = [nspredicate predicateWithFormat:@"SELF MATCHES %@",userNameRegex];
 BOOL inputString = [userNamePredicate evaluateWithObject:name];
 return inputString;
}

允许汉字或数字(不限字数)

- (BOOL)inputChineSEOrNumbers:(Nsstring*)string{
 Nsstring *regex =@"[\u4e00-\u9fa5]+[0-9]*";
 nspredicate *predicate = [nspredicate predicateWithFormat:@"SELF MATCHES %@",regex];
 BOOL inputString = [predicate evaluateWithObject:string];
 return inputString;
}

允许汉字或数字(限字数)

- (BOOL)inputChineSEOrNumbersLimit:(Nsstring*)string{
 Nsstring *regex =@"[\u4e00-\u9fa5][0-9]{6,20}+$";
 nspredicate *predicate = [nspredicate predicateWithFormat:@"SELF MATCHES %@",regex];
 BOOL inputString = [predicate evaluateWithObject:string];
 return inputString;
}

允许汉字，大小写或数字(不限字数)

- (BOOL)inputChineSEOrLettersAndNumbersNum:(Nsstring*)string{
 Nsstring *regex =@"[\u4e00-\u9fa5]+[A-Za-z0-9]*";
 nspredicate *predicate = [nspredicate predicateWithFormat:@"SELF MATCHES %@",regex];
 BOOL inputString = [predicate evaluateWithObject:string];
 return inputString;
}

允许汉字，大小写或数字(限字数)

- (BOOL)inputChineSEOrLettersNumberslimit:(Nsstring*)string{
 Nsstring *regex =@"[\u4e00-\u9fa5]+[A-Za-z0-9]{6,regex];
 BOOL inputString = [predicate evaluateWithObject:string];
 return inputString;
}

以上所述是小编给大家介绍的IOS正则表达式判断输入类型(整理)，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对编程小技巧网站的支持！