9.42. IOS-Twitter and Facebook

发布时间 : 2025-10-25 13:32:34 UTC      

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9.42.1. Brief introduction

Twitter has been integrated into iOS5.0, while Facebook has been integrated into iOS 6.0. This tutorial focuses on how to deploy Twitter and Facebook in iOS5.0 and iOS6.0 using classes provided by Apple.

9.42.2. Instance step

  1. Create a simple View based application

two。 Select the project file, then select targets, and then add Social.framework and Accounts.framework to the choose frameworks (select frame)

3. 添加两个名为facebookPost 和 twitterPost的按钮,并为他们创建 ibActions。

  1. Update the ViewController.h as follows

#import  #import  #import  @interface ViewController : UIViewController -(IBAction)twitterPost:(id)sender; -(IBAction)facebookPost:(id)sender; @end    
  1. Update ViewController.m, as shown below

#import "ViewController.h" @interface ViewController () @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } -(IBAction)facebookPost:(id)sender{ SLComposeViewController *controller = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeFacebook]; SLComposeViewControllerCompletionHandler myBlock = ^(SLComposeViewControllerResult result){ if (result == SLComposeViewControllerResultCancelled) { NSLog(@"Cancelled"); } else { NSLog(@"Done"); } [controller dismissViewControllerAnimated:YES completion:nil]; }; controller.completionHandler =myBlock; //Adding the Text to the facebook post value from iOS [controller setInitialText:@"My test post"]; //Adding the URL to the facebook post value from iOS [controller addURL:[NSURL URLWithString:@"http://www.test.com"]]; //Adding the Text to the facebook post value from iOS [self presentViewController:controller animated:YES completion:nil]; } -(IBAction)twitterPost:(id)sender{ SLComposeViewController *tweetSheet = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeTwitter]; [tweetSheet setInitialText:@"My test tweet"]; [self presentModalViewController:tweetSheet animated:YES]; } @end 

9.42.3. Output

When we run the application and click facebookPost, we will get the following output

FBTwit_Output1

When we click twitterPost, we get the following output

FBTwit_Output2

《地理信息系统原理、技术与方法》  97

最近几年来,地理信息系统无论是在理论上还是应用上都处在一个飞速发展的阶段。 GIS被应用于多个领域的建模和决策支持,如城市管理、区划、环境整治等等,地理信息成为信息时代重要的组成部分之一; “数字地球”概念的提出,更进一步推动了作为其技术支撑的GIS的发展。 与此同时,一些学者致力于相关的理论研究,如空间感知、空间数据误差、空间关系的形式化等等。 这恰好说明了地理信息系统作为应用技术和学科的两个方面,并且这两个方面构成了相互促进的发展过程。