在iOS中关闭通讯录

Question

我知道如何使用MFMailComposeViewController在iOS中打开并发送电子邮件。 下面的代码将允许用户编写和发送电子邮件，然后直接返回到应用程序。

- (IBAction)sendEmail:(id)sender {
        // Email Subject
        NSString *emailTitle = @"Test";
        // Email Content
        NSString *messageBody = @"Test";
        // To address
        NSArray *toRecipents = [NSArray arrayWithObject:@"te@gmail.com"];


        MFMailComposeViewController *mc = [[MFMailComposeViewController alloc] init];
        mc.mailComposeDelegate = self;
        [mc setSubject:emailTitle];
        [mc setMessageBody:messageBody isHTML:NO];
        [mc setToRecipients:toRecipents];

        // Present mail view controller on screen
        [self presentViewController:mc animated:YES completion:NULL];

    }

    - (void) mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error
    {
        switch (result)
        {
            case MFMailComposeResultCancelled:
                NSLog(@"Mail cancelled");
                break;
            case MFMailComposeResultSaved:
                NSLog(@"Mail saved");
                break;
            case MFMailComposeResultSent:
                NSLog(@"Mail sent");
                break;
            case MFMailComposeResultFailed:
                NSLog(@"Mail sent failure: %@", [error localizedDescription]);
                break;
            default:
                break;
        }

        // Close the Mail Interface
        [self dismissViewControllerAnimated:YES completion:NULL];
    }

我要弄清楚的是，是否要让用户打开通讯录并向其中一个联系人发送电子邮件，在发送电子邮件之后，用户必须重新打开应用程序...我希望他们自动返回到应用程序。 以下是打开通讯录，查看联系人以及发送电子邮件/拨打电话/向该联系人发送消息的代码。

- (IBAction)openContacts:(id)sender {
    ABPeoplePickerNavigationController *peoplePicker =
    [[ABPeoplePickerNavigationController alloc] init];
    peoplePicker.peoplePickerDelegate = self;
    [self presentModalViewController:peoplePicker animated:YES];
}


- (BOOL)peoplePickerNavigationController:
(ABPeoplePickerNavigationController *)picker
      shouldContinueAfterSelectingPerson:(ABRecordRef)person
{
//    [self dismissModalViewControllerAnimated:YES];
    return YES;
}

- (BOOL)peoplePickerNavigationController:
(ABPeoplePickerNavigationController *)picker
      shouldContinueAfterSelectingPerson:(ABRecordRef)person
                                property:(ABPropertyID)property
                              identifier:(ABMultiValueIdentifier)identifier
{
    return YES;
}

- (void)peoplePickerNavigationControllerDidCancel:
(ABPeoplePickerNavigationController *)picker
{
    [self dismissViewControllerAnimated:YES completion:NULL];
}

有谁知道让用户在打开地址簿后直接回到应用程序吗？ 谢谢！

编辑实施@Rob的建议后，我的代码如下所示：

- (IBAction)openContacts:(id)sender {
    ABPeoplePickerNavigationController *peoplePicker =
    [[ABPeoplePickerNavigationController alloc] init];
    peoplePicker.peoplePickerDelegate = self;
    [self presentModalViewController:peoplePicker animated:YES];
}


- (BOOL)peoplePickerNavigationController:
(ABPeoplePickerNavigationController *)peoplePicker
      shouldContinueAfterSelectingPerson:(ABRecordRef)person
{
    return YES;
}


- (void)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker
                         didSelectPerson:(ABRecordRef)person
                                property:(ABPropertyID)property
                              identifier:(ABMultiValueIdentifier)identifier {
    if (property == kABPersonEmailProperty) {
        ABMultiValueRef emails = ABRecordCopyValue(person, property);
        CFIndex index = ABMultiValueGetIndexForIdentifier(emails, identifier);
        NSString *email = CFBridgingRelease(ABMultiValueCopyValueAtIndex(emails, index));
        CFRelease(emails);

        MFMailComposeViewController *composeViewController = [[MFMailComposeViewController alloc] init];
        [composeViewController setToRecipients:@[email]];
        composeViewController.mailComposeDelegate = self;

        [peoplePicker dismissViewControllerAnimated:NO completion:^{
            [self presentViewController:composeViewController animated:YES completion:nil];
        }];
    } else {
        [peoplePicker dismissViewControllerAnimated:YES completion:nil];
    }
}


- (void)peoplePickerNavigationControllerDidCancel:(ABPeoplePickerNavigationController *)peoplePicker {
    [peoplePicker dismissViewControllerAnimated:YES completion:nil];
}

我可以选择一个联系人，然后拨打电话或发送电子邮件，但完成这些操作之一后，仍然必须手动返回到该应用程序。

Answer 1

您的shouldContinueAfterSelectingPerson:property:identifier:返回YES ，这告诉人员选择器您希望iOS处理电子邮件的发送（即它将离开您的应用程序）。 如果您不想离开应用程序，请让此函数返回NO ，然后在适当的ABPeoplePickerNavigationControllerDelegate函数中展示您自己的MFMailComposeViewController （如您先前显示的）。 然后，您可以在不影响应用程序的情况下拉起联系人并开始发送电子邮件。

例如，您可以执行以下操作：

#pragma mark - ABPeoplePickerNavigationControllerDelegate

// for iOS versions before 8.0

- (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker
      shouldContinueAfterSelectingPerson:(ABRecordRef)person
                                property:(ABPropertyID)property
                              identifier:(ABMultiValueIdentifier)identifier {
    [self peoplePickerNavigationController:peoplePicker
                           didSelectPerson:person
                                  property:property
                                identifier:identifier];

    return NO;
}

// for iOS 8+

- (void)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker
                         didSelectPerson:(ABRecordRef)person
                                property:(ABPropertyID)property
                              identifier:(ABMultiValueIdentifier)identifier {
    if (property == kABPersonEmailProperty) {
        ABMultiValueRef emails = ABRecordCopyValue(person, property);
        CFIndex index = ABMultiValueGetIndexForIdentifier(emails, identifier);
        NSString *email = CFBridgingRelease(ABMultiValueCopyValueAtIndex(emails, index));
        CFRelease(emails);

        MFMailComposeViewController *composeViewController = [[MFMailComposeViewController alloc] init];
        [composeViewController setToRecipients:@[email]];
        composeViewController.mailComposeDelegate = self;

        [peoplePicker dismissViewControllerAnimated:NO completion:^{
            [self presentViewController:composeViewController animated:YES completion:nil];
        }];
    } else {
        [peoplePicker dismissViewControllerAnimated:YES completion:nil];
    }
}

- (void)peoplePickerNavigationControllerDidCancel:(ABPeoplePickerNavigationController *)peoplePicker {
    [peoplePicker dismissViewControllerAnimated:YES completion:nil];
}

注意，我在iOS 8例程didSelectPerson实现了该逻辑，但是从shouldContinueAfterSelectingPerson调用它是为了向后兼容。

---

与您的问题无关，但是如果使用人员选择器选择电子邮件地址，则在iOS 8中，可以使用户避免选择没有电子邮件地址的联系人，以及在显示联系人时仅显示电子邮件地址。 仅有一些不错的iOS 8增强功能：

ABPeoplePickerNavigationController *picker = [[ABPeoplePickerNavigationController alloc] init];
picker.peoplePickerDelegate = self;

// if you don't want user to select contacts with no email address

if ([picker respondsToSelector:@selector(setPredicateForEnablingPerson:)]) {
    picker.predicateForEnablingPerson = [NSPredicate predicateWithFormat:@"emailAddresses.@count > 0"];
}

// if you don't want to show phone numbers, mailing addresses, etc., you can show just email addresses in iOS 8

if ([picker respondsToSelector:@selector(setDisplayedProperties:)]) {
    picker.displayedProperties = @[@(kABPersonEmailProperty)];
}

[self presentViewController:picker animated:YES completion:nil];