过滤中文输入

gistfile1.txt

    [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(textFiledEditChanged:)
                                                name:@"UITextFieldTextDidChangeNotification"
                                              object:self.bBankCardbyName];
                                              

-(void)textFiledEditChanged:(NSNotification *)obj{
    UITextField *textField = (UITextField *)obj.object;
    
    NSLog(@"textField:%@",textField.text);
    

    NSMutableString *mutalbleStr = [NSMutableString stringWithString:self.bBankCardbyName.text];
    
    
    NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:
                                  @"[\u4e00-\u9fa5]" options:0 error:nil];
    
    [regex replaceMatchesInString:mutalbleStr options:0 range:NSMakeRange(0, [self.bBankCardbyName.text length]) withTemplate:@""];
    self.bBankCardbyName.text = mutalbleStr;
}