Open Twitter Setting from ACAccountStore (iOS 5.1

问题:

in iOS 5.0 i was opening Twitter setting from my app by

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=TWITTER"]];

but , this features is removed in iOS 5.1 , hence i can not able to open twitter setting .

Now i am using

 + (void)makeRequestsWithURL: (NSURL *)url {
// Create an account store object.
ACAccountStore *accountStore = [[ACAccountStore alloc] init];

// Create an account type that ensures Twitter accounts are retrieved.
ACAccountType *accountType = [accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierTwitter];
[self canTweetStatus];

// Request access from the user to use their Twitter accounts.
[accountStore requestAccessToAccountsWithType:accountType withCompletionHandler:^(BOOL granted, NSError *error) {
    if(granted) {
        // Get the list of Twitter accounts.
        NSArray *accountsArray = [accountStore accountsWithAccountType:accountType];

        // For the sake of brevity, we'll assume there is only one Twitter account present.
        // You would ideally ask the user which account they want to tweet from, if there is more than one Twitter account present.
        if ([accountsArray count] > 0) {
            // Grab the initial Twitter account to tweet from.
            ACAccount *twitterAccount = [accountsArray objectAtIndex:0];


            // Create a request, which in this example, posts a tweet to the user's timeline.
            // This example uses version 1 of the Twitter API.
            // This may need to be changed to whichever version is currently appropriate.
            TWRequest *postRequest = [[TWRequest alloc] initWithURL:url parameters:nil requestMethod:TWRequestMethodPOST];

            // Set the account used to post the tweet.
            [postRequest setAccount:twitterAccount];

            // Perform the request created above and create a handler block to handle the response.
            [postRequest performRequestWithHandler:^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error) {
                NSString *output = [NSString stringWithFormat:@"HTTP response status: %i", [urlResponse statusCode]];
                iOS5Twitter *twitter5 = [[iOS5Twitter alloc] init];
                [twitter5 performSelectorOnMainThread:@selector(displayText:) withObject:output waitUntilDone:NO];
                [twitter5 release];                }];
        }
    }

}];

}

for making request, i am able to check wether i am loged in or not by the

if ([TWTweetComposeViewController canSendTweet])

but now i want : if i am not loged in it would be show an alert like shown in image and want to move to the twitter setting . is it possible ? or i have to manually go ti twitter setting ?

回答1:

It is little tricky , i get by the removing the subviews in *TWTWeetComposeViewController*, so it shows only alert when user is not loged in and by the clicking on setting button , we can open Setting page in my app.

     + (void)setAlertForSettingPage :(id)delegate 
    {
     // Set up the built-in twitter composition view controller.
        TWTweetComposeViewController *tweetViewController = [[TWTweetComposeViewController alloc] init];


        // Create the completion handler block.
        [tweetViewController setCompletionHandler:^(TWTweetComposeViewControllerResult result) {
            [delegate dismissModalViewControllerAnimated:YES];
        }];

        // Present the tweet composition view controller modally.
        [delegate presentModalViewController:tweetViewController animated:YES];
        //tweetViewController.view.hidden = YES;
        for (UIView *view in tweetViewController.view.subviews){
            [view removeFromSuperview];
        }

     } 

here , deleate is your viewcontroller , if you are using this method inside your viewcontroller just use self instead of delegate.

回答2:

iOS 6 uses SLComposeViewController instead of TWTweetComposeViewController, so now you have to do this if you want it to work on iOS 6 and iOS 5:

    UIViewController *tweetComposer;

    if([SLComposeViewController class] != nil)
    {
        tweetComposer = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeTwitter];

        [(SLComposeViewController *)tweetComposer setCompletionHandler:^(SLComposeViewControllerResult result)
         {
            // do whatever you want
         }];
    }
    else
    {
        tweetComposer = [[TWTweetComposeViewController alloc] init];

        [(TWTweetComposeViewController *)tweetComposer setCompletionHandler:^(TWTweetComposeViewControllerResult result)
         {
            // do whatever you want
         }];
    }

    for (UIView *view in [[tweetComposer view] subviews])
        [view removeFromSuperview];

    [self presentViewController:tweetComposer animated:NO completion:nil];

回答3:

Building upon Senior's and PJR's answers above, this is what worked for me.

Same as Senior's, except with a dimissViewController in the completion handler. For me this got around the problem that the empty view controller would stick around after I returned to the app from the settings. It would overlay my view controller and make it useless.

Brilliant solution, thanks Senior and PJR.

UIViewController *tweetComposer;

if([SLComposeViewController class] != nil)
{
    tweetComposer = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeTwitter];

    [(SLComposeViewController *)tweetComposer setCompletionHandler:^(SLComposeViewControllerResult result)
     {
            [self dismissViewControllerAnimated:NO completion:nil];
     }];
}
else
{
    tweetComposer = [[TWTweetComposeViewController alloc] init];

    [(TWTweetComposeViewController *)tweetComposer setCompletionHandler:^(TWTweetComposeViewControllerResult result)
     {
           [self dismissViewControllerAnimated:NO completion:nil];

     }];
}

for (UIView *view in [[tweetComposer view] subviews])
    [view removeFromSuperview];

[self presentViewController:tweetComposer animated:NO completion:nil];

回答4:

To remove the post view, instead using this code:

for (UIView *view in [[tweetComposer view] subviews])
    [view removeFromSuperview];

use this:

tweetComposer.view.alpha = 0;

works both for twitter and facebook.