iOS 点击键盘的return隐藏键盘

#pragma mark - UITextFieldDetegate

- (BOOL)textFieldShouldReturn:(UITextField *)textField {

    

    [self.view endEditing:YES];

    return YES;

}

#pragma mark - UITextViewDelegate

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text{

    if ([text isEqualToString:@"\n"]){ //判断输入的字是否是回车，即按下return

        //在这里做你响应return键的代码

        [self.remarksTFView resignFirstResponder];

        return NO; //这里返回NO，就代表return键值失效，即页面上按下return，不会出现换行，如果为yes，则输入页面会换行

    }

    return YES;

}