ios 输入框输入6位数字

来源：互联网发布：华为手机数据迁移编辑：程序博客网时间：2024/04/30 02:56
-(BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string{    if (textField.tag == 11) {        //新密码                if(range.location <= 5){                                                if ([string length]>0)                            {                                unichar single=[string characterAtIndex:0];//当前输入的字符                                if ((single >='0' && single<='9'))//数据格式正确                                {                                     return YES;                                 }else{                                     return NO;                                 }                             }else{                                 return YES;                             }                                    }else{                                        return NO;                }    }else{        //确认新密码        if(range.location <= 5){                        if ([string length]>0)            {                unichar single=[string characterAtIndex:0];//当前输入的字符                if ((single >='0' && single<='9'))//数据格式正确                {                    return YES;                }else{                    return NO;                }            }else{                return YES;            }                    }else{                        return NO;        }    }}
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