iOS macOS限制输入框判断输入内容

鸣谢:

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)onlyInputLowercaseLetter:(NSString*)string{
        NSString *regex =@"[a-z]*";
        NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
        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]{6,20}+$";
        NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
        BOOL  inputString = [predicate evaluateWithObject:string];
        return inputString;
    }

     

posted on 2022-08-01 15:42  高彰  阅读(79)  评论(0编辑  收藏  举报

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