iOS macOS限制输入框判断输入内容
鸣谢:HiroGuo
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; }