警报视图问题，'委托'未声明的错误

Question

这可能是学校男生的错误，但我想在有人选择不是地址的peoplePickerNavigationController中的联系人属性后嵌入UIAlertView。如果得到'委托'未声明的错误我做错了什么！有人可以从概念上告诉我为什么这不起作用，因为我已经使自己成为UIAlertViewDelegate并做了正确的事情！在此先感谢： - ）

- (BOOL) peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker 
    shouldContinueAfterSelectingPerson:(ABRecordRef)person 
         property:(ABPropertyID)property 
          identifier:(ABMultiValueIdentifier)identifier {
 UIAlertView *alert;
 if (property == kABPersonAddressProperty)
  NSLog(@"ZOMG YOU PRESSED FOR AN ADDRESS!!");
 else {
  alert = [UIAlertView alloc];
  [alert initWithTitle:@"Invalid Address" message:@"Please pick an address from a contact": delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
  [alert show];
  [alert release];
 }

 [self dismissModalViewControllerAnimated:YES];
 return NO;
}

Answer 1

你还有一个额外的： -

message:@"Please pick an address from a contact": delegate:self