Integrate twitter into iOS 5 but maintain backwards compatibility with older iOS - objective-c

Question

Been following this great tutorial on how to integrate twitter into your app. I know there are other ways that programmers have used to integrate twitter before iOS 5 but my question is this:
My app supports iOS 3.0+ so if I integrate twitter using just the iOS 5 way of doing it, how will this affect my users that aren't using iOS 5? Will it even work for them?
Thanks!

Answer 1

If you are OK by only making Twitter available for iOS 5 users, you can check if Twitter is available with this:
// Don't forget to import Twitter!
#import <Twitter/Twitter.h>
....
if([TWTweetComposeViewController class] != nil) {
// your code here
}
Also, make sure that when adding the Twitter framework you set it as optional.

Answer 2

The official API framework wouldn't work unfortunately as the twitter app/integration is only available in iOS 5
A good solution is to use ShareKit, a free API that allows you to integrate twitter, facebook and other social network support.

Answer 3

You should look into DETweetComposeViewController. We built it just for this purpose. It is an iOS4 compatible re-implementation of the TWTweetComposeViewController.

Answer 4

Use weak linking and some code like the following:
- (void)tweet
{
Class tweeterClass = NSClassFromString(#"TWTweetComposeViewController");
if(tweeterClass != nil) {
if([TWTweetComposeViewController canSendTweet]) {
TWTweetComposeViewController *tweetViewController = [[TWTweetComposeViewController alloc] init];
tweetViewController.completionHandler = ^(TWTweetComposeViewControllerResult result) {
if(result == TWTweetComposeViewControllerResultDone) {
}
[self dismissViewControllerAnimated:YES completion:nil];
};
[self presentViewController:tweetViewController animated:YES completion:nil];
} else {
#if !(TARGET_IPHONE_SIMULATOR)
[self displayAlert:#"You can't send a tweet right now, make sure your device has an internet connection and you have at least one Twitter account setup."];
#else
NSString *tweetString = [NSString stringWithFormat:#"http://mobile.twitter.com/home?status=%#%#", [self urlEncode:#"Check out this awesome pic: "] ,[self urlEncode:[_blobTweet.shortUrl absoluteString]]];
NSURL *tweetURL = [NSURL URLWithString:tweetString];
if ([[UIApplication sharedApplication] canOpenURL:tweetURL]) {
[[UIApplication sharedApplication] openURL:tweetURL];
}
#endif
}
} else {
// no Twitter integration could default to third-party Twitter framework
}
}
#end