twitter投稿さんぷる(SLComposeViewController使わない版)

twitterViewController.m

// #import <Social/Social.h> -> Social.framework
// #import <Accounts/Accounts.h> -> Accounts.framework

// 投稿ボタンタップとか？
- (IBAction)postTwitter:(id)sender {
    
    // Twitterアカウントが端末に設定されているか？
    if ( ! [SLComposeViewController isAvailableForServiceType:SLServiceTypeTwitter]) {
        return;
    }
    
    // 設定されてるアカウントを取得(マルチアカウントってな)
    ACAccountStore *accountStore = [ACAccountStore new];
    ACAccountType *accountType = [accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierTwitter];
    
    [accountStore requestAccessToAccountsWithType:accountType
                                          options:nil
                                       completion:^(BOOL granted, NSError *error) {
        
        if ( ! granted) {
            return;
        }
        
        self.accounts = [accountStore accountsWithAccountType:accountType];
        
        // ゲーム用、プライベート用などいろいろあるとおもうんで
        // せめて選ばせたい
        dispatch_async(dispatch_get_main_queue(), ^{
            UIActionSheet *actionSheet = [UIActionSheet new];
            actionSheet.title = @"アカウントえらんでね";
            for (ACAccount *account in self.accounts) {
                [actionSheet addButtonWithTitle:account.username];
            }
            [actionSheet addButtonWithTitle:@"cancel"];
            actionSheet.cancelButtonIndex = [self.accounts count];
            actionSheet.delegate = self;
            [actionSheet showInView:self.view];
        });
    }];
    
}

// アカウント選択後
- (void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex
{
    if (buttonIndex == actionSheet.cancelButtonIndex) {
        return;
    }
    
    // 投稿するGIF
    NSURL *gifUrl = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"mikumiku" ofType:@"gif"]];
    NSData *gifData = [NSData dataWithContentsOfURL: gifUrl];
    
    // 投稿処理へ
    ACAccount *account = [self.accounts objectAtIndex:buttonIndex];
    
    // twitter api
    NSURL *url = [NSURL URLWithString:@"https://api.twitter.com/1.1/statuses/update_with_media.json"];
    NSDictionary *params = @{@"status" : @"テスト投稿だよ〜"};  // めっせーじ
    // request の作成
    SLRequest *request = [SLRequest requestForServiceType:SLServiceTypeTwitter
                                            requestMethod:SLRequestMethodPOST
                                                      URL:url
                                               parameters:params];
    
    [request setAccount:account];       // 投稿アカウントの指定
    [request addMultipartData:gifData withName:@"media[]" type:@"image/gif" filename:@"image.gif"]; //マルチパートの設定
    
    // リクエスト投げる
    [request performRequestWithHandler:^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error) {
        NSLog(@"response : %@", [urlResponse debugDescription]);
    }];
    
}