這次帶給大家正規怎麼在ios裡判斷是否輸入，正規在ios裡判斷是否輸入的注意事項有哪些，下面就是實戰案例，一起來看一下。
只能為中文
-(BOOL)onlyInputChineseCharacters:(NSString*)string{
NSString *zhString = @"[\u4e00-\u9fa5]+";
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",zhString];
BOOL inputString = [predicate evaluateWithObject:string];
return inputString;
}登入後複製
只能為數字
- (BOOL)onlyInputTheNumber:(NSString*)string{
NSString *numString =@"[0-9]*";
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",numString];
BOOL inputString = [predicate evaluateWithObject:string];
return inputString;
}登入後複製
只能為小寫
- (BOOL)onlyInputLowercaseLetter:(NSString*)string{
NSString *regex =@"[a-z]*";
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
BOOL inputString = [predicate evaluateWithObject:string];
return inputString;
}登入後複製
*只能為大寫
- (BOOL)onlyInputACapital:(NSString*)string{
NSString *regex =@"[A-Z]*";
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
BOOL inputString = [predicate evaluateWithObject:string];
return inputString;
}登入後複製
#允許大小寫
- (BOOL)InputCapitalAndLowercaseLetter:(NSString*)string{
NSString *regex =@"[a-zA-Z]*";
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
BOOL inputString = [predicate evaluateWithObject:string];
return inputString;
}登入後複製
允許含大小寫或數字(不限字數)
- (BOOL)inputLettersOrNumbers:(NSString*)string{
NSString *regex =@"[a-zA-Z0-9]*";
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
BOOL inputString = [predicate evaluateWithObject:string];
return inputString;
}登入後複製
允許含大小寫或數字(限字數)
-(BOOL)inputNumberOrLetters:(NSString*)name {
NSString *userNameRegex = @"^[A-Za-z0-9]{6,20}+$";
NSPredicate *userNamePredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",userNameRegex];
BOOL inputString = [userNamePredicate evaluateWithObject:name];
return inputString;
}登入後複製
允許漢字或數字(不限字數)
- (BOOL)inputChineseOrNumbers:(NSString*)string{
NSString *regex =@"[\u4e00-\u9fa5]+[0-9]*";
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
BOOL inputString = [predicate evaluateWithObject:string];
return inputString;
}登入後複製
允許漢字或數字(限字數)
- (BOOL)inputChineseOrNumbersLimit:(NSString*)string{
NSString *regex =@"[\u4e00-\u9fa5][0-9]{6,20}+$";
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
BOOL inputString = [predicate evaluateWithObject:string];
return inputString;
}登入後複製
允許漢字，大小寫或數字(不限字數)
#
- (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;
}登入後複製
允許漢字，大小寫或數字(限字數)
- (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;
}登入後複製
相信看了本文案例你已經掌握了方法，更多精彩請關注php中文網其它相關文章！
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