如何使用iOS 5中的Twitter框架獲取用戶Twitter個人資料信息？

Question

我可以張貼到Twitter用下面的代碼：

TWTweetComposeViewController *tweeter = [[TWTweetComposeViewController alloc] init]; 
     [tweeter setInitialText:@"message"]; 
     [tweeter addImage:image]; 
     [self presentModalViewController:tweeter animated:YES]; 

我怎樣才能在iOS 5的Twitter的框架用戶的Twitter個人資料嗎？

Answer 1

請注意，設備上可能存在多個帳戶設置;

// Is Twitter is accessible is there at least one account 
    // setup on the device 
    if ([TWTweetComposeViewController canSendTweet]) 
    { 
    // Create account store, followed by a twitter account identifer 
    account = [[ACAccountStore alloc] init]; 
    ACAccountType *accountType = [account accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierTwitter]; 

    // Request access from the user to use their Twitter accounts. 
    [account requestAccessToAccountsWithType:accountType withCompletionHandler:^(BOOL granted, NSError *error) 
    { 
     // Did user allow us access? 
     if (granted == YES) 
     { 
     // Populate array with all available Twitter accounts 
     arrayOfAccounts = [account accountsWithAccountType:accountType]; 
     [arrayOfAccounts retain]; 

     // Populate the tableview 
     if ([arrayOfAccounts count] > 0) 
      [self performSelectorOnMainThread:@selector(updateTableview) withObject:NULL waitUntilDone:NO]; 
     } 
    }]; 
    } 

參考文獻;

http://iosdevelopertips.com/core-services/ios-5-twitter-framework-%E2%80%93-part-3.html

Answer 2

唯一可能的類用於獲取詳細信息（Twitter的框架內）是TWRequest。我不知道它，但它似乎是任何API請求到Twitter服務的包裝。

http://developer.apple.com/library/ios/#documentation/Twitter/Reference/TWRequestClassRef/Reference/Reference.html#//apple_ref/doc/uid/TP40010942

Answer 3

好吧，讓說你要顯示的Twitter帳號的用戶都有一個表中的設備上。您可能希望在表格單元格中顯示頭像，在這種情況下，您需要查詢Twitter的API。

假設您有NSArray的ACAccount對象，您可以創建一個字典來存儲每個帳戶的額外配置文件信息。你的表視圖控制器的tableView:cellForRowAtIndexPath:將需要一些像這樣的代碼：

// Assuming that you've dequeued/created a UITableViewCell... 

    // Check to see if we have the profile image of this account 
    UIImage *profileImage = nil; 
    NSDictionary *info = [self.twitterProfileInfos objectForKey:account.identifier]; 
    if (info) profileImage = [info objectForKey:kTwitterProfileImageKey]; 

    if (profileImage) { 
     // You'll probably want some neat code to round the corners of the UIImageView 
     // for the top/bottom cells of a grouped style `UITableView`. 
     cell.imageView.image = profileImage; 

    } else { 
     [self getTwitterProfileImageForAccount:account completion:^ { 
      // Reload this row 
      [self.tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade]; 
     }];    
    } 

這一切正在做的是從字典的字典，由帳戶標識符鍵訪問UIImage對象，然後靜態NSString關鍵。如果它沒有得到一個圖像對象，那麼它會調用一個實例方法，傳遞一個完成處理程序塊，它將重新加載表格行。實例方法看起來有點像這樣：

#pragma mark - Twitter 

- (void)getTwitterProfileImageForAccount:(ACAccount *)account completion:(void(^)(void))completion { 

    // Create the URL 
    NSURL *url = [NSURL URLWithString:@"users/profile_image" relativeToURL:kTwitterApiRootURL]; 

    // Create the parameters 
    NSDictionary *params = [NSDictionary dictionaryWithObjectsAndKeys: 
          account.username, @"screen_name", 
          @"bigger", @"size", 
          nil]; 

    // Create a TWRequest to get the the user's profile image 
    TWRequest *request = [[TWRequest alloc] initWithURL:url parameters:params requestMethod:TWRequestMethodGET]; 

    // Execute the request 
    [request performRequestWithHandler:^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error) { 

     // Handle any errors properly, not like this!   
     if (!responseData && error) { 
      abort(); 
     } 

     // We should now have some image data 
     UIImage *profileImg = [UIImage imageWithData:responseData]; 

     // Get or create an info dictionary for this account if one doesn't already exist 
     NSMutableDictionary *info = [self.twitterProfileInfos objectForKey:account.identifier]; 
     if (!info) { 
      info = [NSMutableDictionary dictionary];    
      [self.twitterProfileInfos setObject:info forKey:account.identifier]; 
     } 

     // Set the image in the profile 
     [info setObject:profileImg forKey:kTwitterProfileImageKey]; 

     // Execute our own completion handler 
     if (completion) dispatch_async(dispatch_get_main_queue(), completion); 
    }]; 
} 

所以，一定要優雅地失敗，但是，那麼將更新表作爲它下載個人資料圖片。在你的完成處理程序中，你可以將它們放在圖像緩存中，或者將它們保存在課程的整個生命週期之外。

可以使用相同的過程來訪問其他Twitter用戶信息，see their docs。

Answer 4

上述方法過於複雜。只需使用：

ACAccount *twitterAccount = [accountsArray objectAtIndex:0]; 
NSLog(twitterAccount.accountDescription);