How to determine if ios user is signed in to twitter? - iphone

Question

I want to determine it a user is signed on to twitter, so I can prompt them to post a tweet but only if they are set up with ios and twitter. Also, is there a way to set up the twitter screen with a default tweet?

Answer 1

For iOS 5.x, you can check if the user is signed in to twitter using:
[TWTweetComposeViewController canSendTweet]
As for presenting a tweet screen with default message, you can do something like:
TWTweetComposeViewController *tweetSheet = [[TWTweetComposeViewController alloc] init];
[tweetSheet setInitialText:defaultMsg];
[self presentModalViewController:tweetSheet animated:YES];
You can refer this tutorial for more.
EDIT: For iOS 6.0 and above, use:
// requires "Social.framework"
[SLComposeViewController isAvailableForServiceType:SLServiceTypeTwitter]
So, an example usage could be:
if([SLComposeViewController isAvailableForServiceType:SLServiceTypeTwitter])
{
SLComposeViewController *controller = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeTwitter];
SLComposeViewControllerCompletionHandler myBlock = ^(SLComposeViewControllerResult result){
[controller dismissViewControllerAnimated:YES completion:Nil];
};
controller.completionHandler = myBlock;
[controller setInitialText:#"#myHashTag"];
[controller addImage:myImage];
[self presentViewController:controller animated:YES completion:Nil];
}
else
{ /* Show error alert, etc*/ }
Further reading

Answer 2

As I said in my comment if you are using IOS 5 or later versions just add Twitter.framework to your projects
#import <Twitter/Twitter.h>
//post tweets
- (IBAction)postTapped:(id)sender{
if ([TWTweetComposeViewController canSendTweet])
{
TWTweetComposeViewController *tweetSheet = [[TWTweetComposeViewController alloc] init];
[tweetSheet setInitialText:#" #hashtag"];
[self presentModalViewController:tweetSheet animated:YES];
}
else
{
TWTweetComposeViewController *viewController = [[TWTweetComposeViewController alloc] init];
//hide the tweet screen
viewController.view.hidden = YES;
//fire tweetComposeView to show "No Twitter Accounts" alert view on iOS5.1
viewController.completionHandler = ^(TWTweetComposeViewControllerResult result) {
if (result == TWTweetComposeViewControllerResultCancelled) {
[self dismissModalViewControllerAnimated:NO];
}
};
[self presentModalViewController:viewController animated:NO];
//hide the keyboard
[viewController.view endEditing:YES];
}
}