Awesome

IDTwitterAccountChooserViewController

Twitter Account Chooser view controller for iOS 6+. Uses a block-based completion handler or a classic protocol-based delegate method.

Why?

In iOS 6 and up you can store system-wide Twitter accounts. I looked for an existing Account chooser for when you have multiple accounts and I couldn't find one so I decided to make my own.

What does it looks like?

It has a very basic look but it can be easily customized via standard UITableViewCell subclassing (or whatever your favorite method is).

How does it works?

Copy and add the IDTwitterAccountChooserViewController.h and IDTwitterAccountChooserViewController.m files to your project, and make sure to link against the Social and Accounts frameworks.

In your own view controller implementation file (.m):

#import <Social/Social.h>
#import <Accounts/Accounts.h>
#import "IDTwitterAccountChooserViewController.h"

...

ACAccountStore *accountStore = [[ACAccountStore alloc] init];
ACAccountType *twitterAccountType = [accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierTwitter];
// check for access etc.
NSArray *twitterAccounts = [accountStore accountsWithAccountType:twitterAccountType];
if([twitterAccounts count] > 1) {
	// more than one account, use Chooser
	IDTwitterAccountChooserViewController *chooser = [[IDTwitterAccountChooserViewController alloc] init];
	[chooser setTwitterAccounts:twitterAccounts];
	[chooser setCompletionHandler:^(ACAccount *account) {
		// if user cancels the chooser then 'account' will be set to nil
		NSLog(@"account chosen: %@", account);
	}];
	[self presentModalViewController:chooser animated:YES];
}

If you'd rather use a protocol based delegation pattern instead of a completion handler block:

// make your view controller conform to the <IDTwitterAccountChooserViewControllerDelegate> protocol
@interface MyOwnViewController <IDTwitterAccountChooserViewControllerDelegate>

...

	[chooser setAccountChooserDelegate:self];

...

// implement the <IDTwitterAccountChooserViewControllerDelegate> method

#pragma mark - <IDTwitterAccountChooserViewControllerDelegate> Methods

- (void)twitterAccountChooserViewController:(IDTwitterAccountChooserViewController *)controller didChooseTwitterAccount:(ACAccount *)account {
		// if user cancels the chooser then 'account' will be set to nil
		NSLog(@"account chosen: %@", account);
}

If you set both a completion handler and a delegate, the former will be called while the later will be ignored.

License

Licensed under the MIT license

Copyright by @iDevSoftware 2012