1天学习1个类库 accounts类库与twitter框架

看到ios6支持新浪微博了..学习了一下core services layer/Accounts类库.

刚开始一看云里雾里的.完全不知道干什么.揣测下只知道和帐号相关的.google搜索一下.发现是苹果内嵌twitter使用twitter的.

类有 

ACAccount 帐号

ACAccountCredential 帐号凭证?翻译不好.主要是OAuth的token和secret2个字段的验证

ACAccountStore 帐号存储列表

ACAccountType 帐号类型 目前只有twitter 揣测iOS6里面会添加Facebook和sina等支持

4个类

使用时候

通过 ACAccountStore 来获取帐号存储类.

然后accountsWithAccountType: 方法提交twitter类型.获取twitter类型的ACAccountType对象.

在通过ACAccountStore 提交twitter类型ACAccountType对象获取到twitter帐号列表.

然后遍历帐号..

tiwtter框架里面包含2个类

TWRequest twitter请求.使用方法在代码内有说明.

TWTweetCompostViewControllertwitter控制器.可以直接使用控制器完成提交

代码部分.注意导入2个框架Accounts和twitter

main.m

////  main.m//  ControlDemo////  Created by watsy0007 on 12-6-3.//  Copyright (c) 2012年 __MyCompanyName__. All rights reserved.//#import <UIKit/UIKit.h>#import <Accounts/Accounts.h>#import <Twitter/Twitter.h>#define BARBUTTONITEM(bar,title,act) UIBarButtonItem *bar = [[UIBarButtonItem alloc] initWithTitle:title \style:UIBarButtonItemStylePlain \target:self \action:act];@interface ViewController : UIViewController {}@end@implementation ViewController- (void) dealloc {        [super dealloc];}- (void) displayText:(NSString *) sOutput {    NSLog(@"out : %@",sOutput);}- (void) sendTextToTwitter:(id) sender {    TWTweetComposeViewController *tweetViewController = [[TWTweetComposeViewController alloc] init];        [tweetViewController setInitialText:@"hello,this is a tweet from iphone by watsy0007."];//    [tweetViewController addImage:[UIImage @"head.png"]];        [tweetViewController setCompletionHandler:^(TWTweetComposeViewControllerResult result) {        NSString *output;        switch (result) {            case TWTweetComposeViewControllerResultCancelled:                output = @"Tweet cancelled.";                break;                            case TWTweetComposeViewControllerResultDone:                output = @"tweet done.";                break;                            default:                break;        }                [self performSelectorOnMainThread:@selector(displayText:) withObject:output waitUntilDone:NO];                [self dismissModalViewControllerAnimated:YES];    }];        [self presentModalViewController:tweetViewController animated:YES];    [tweetViewController release];}- (void) sendCustomTwitter:(id) sender {    //获取帐号存储    ACAccountStore *accountStore = [[ACAccountStore alloc] init];        //获取twitter帐号类型    //按照此数据提示.可以看出来苹果在更新后的SDK中,应该会封装facebook sina的帐号吧.    //这样封装了帐号密码在系统级别.而在应用程序中,只需要获取到帐号的索引    //然后调用发送和接收服务    //剩下的只是数据处理    ACAccountType *accountType = [accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierTwitter];        //申请访问帐号    [accountStore requestAccessToAccountsWithType:accountType                             withCompletionHandler:^(BOOL granted,NSError *error) {                                //授权访问                                //提示用户程序需要访问twitter帐号                                if (granted) {                                    //获取twitter帐号列表                                    NSArray *accountArray = [accountStore accountsWithAccountType:accountType];                                                                        //如果添加了twitter帐号                                    if ([accountArray count] > 0) {                                        //这里只是获取了第一个帐号.其实还可以通过username选择具体的用户                                        ACAccount *twitterAccount = [accountArray objectAtIndex:0];                                                                                                                        //twitter 访问请求                                        //封装的相当简洁                                        //用户只需要提交 url 数据字典 和 请求类型                                        //这样独立于帐号                                        TWRequest *postRequest = [[TWRequest alloc] initWithURL:[NSURL URLWithString:@"http://api.twitter.com/1/statuses/update.json"]                                                                                      parameters:[NSDictionary dictionaryWithObject:@"Hello, This is a tweet from ios demo." forKey:@"status"]                                                                                   requestMethod:TWRequestMethodPOST];                                        //设置请教的归属帐号                                        //使用什么帐号来完成操作                                        [postRequest setAccount:twitterAccount];                                                                                //请求数据                                        [postRequest performRequestWithHandler:^(NSData *responseData,NSHTTPURLResponse *urlResponse,NSError *error){                                            //请求返回的结果                                            NSString *output = [NSString stringWithFormat:@"HTTP response status : %i\n data: %@",[urlResponse statusCode],[[[NSString alloc] initWithData:responseData                                                         encoding:NSUTF8StringEncoding] autorelease]];                                             [self performSelectorOnMainThread:@selector(displayText:) withObject:output waitUntilDone:NO];                                        }];                                    }                                }                            }];}- (void) getpublicLineTwitter:(id) sender {    //同上    TWRequest *postRequest = [[TWRequest alloc] initWithURL:[NSURL URLWithString:@"http://api.twitter.com/1/statuses/public_timeline.json"]                                                  parameters:nil                                               requestMethod:TWRequestMethodGET];    [postRequest performRequestWithHandler:^(NSData *responseData,NSHTTPURLResponse *urlResponse,NSError *error){         NSString *output;        if ([urlResponse statusCode] == 200) {            // Parse the responseData, which we asked to be in JSON format for this request, into an NSDictionary using NSJSONSerialization.            NSError *jsonParsingError = nil;            NSDictionary *publicTimeline = [NSJSONSerialization JSONObjectWithData:responseData options:0 error:&jsonParsingError];            output = [NSString stringWithFormat:@"HTTP response status: %i\nPublic timeline:\n%@", [urlResponse statusCode], publicTimeline];        }        else {            output = [NSString stringWithFormat:@"HTTP response status: %i\n", [urlResponse statusCode]];        }                [self performSelectorOnMainThread:@selector(displayText:) withObject:output waitUntilDone:NO];    }];}- (void) loadView {    [super loadView];        [[self view] setBackgroundColor:[UIColor whiteColor]];        BARBUTTONITEM(leftItem1, @"默认测试",@selector(sendTextToTwitter:));    BARBUTTONITEM(leftItem2, @"post测试",@selector(sendCustomTwitter:));        self.navigationItem.leftBarButtonItems = [NSArray arrayWithObjects:leftItem1,leftItem2, nil];    [leftItem1 release];    [leftItem2 release];        BARBUTTONITEM(rightItem, @"获取列表",@selector(getpublicLineTwitter:));    self.navigationItem.rightBarButtonItem = rightItem;    [rightItem release];    }- (void) viewWillUnload {        [super viewWillUnload];}- (BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation {    return YES;}- (void) viewDidLoad {    [super viewDidLoad];}@end//-----------------------------------------------------------------------------------------------------#pragma mark -#pragma mark AppDelegate@interface AppDelegate : UIResponder <UIApplicationDelegate>@property (strong, nonatomic) UIWindow *window;@property (strong, nonatomic) UIViewController *viewController;@end@implementation AppDelegate@synthesize window = _window;@synthesize viewController = _viewController;- (void) dealloc {    [_window release];    [_viewController release];        [super dealloc];}- (BOOL) application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    srand(time(NULL));        self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];        self.viewController = [[ViewController alloc] init];        UINavigationController *controller = [[UINavigationController alloc] initWithRootViewController:self.viewController];     self.window.rootViewController = controller;    [controller release];        [self.window makeKeyAndVisible];    return YES;}@endint main(int argc, char *argv[]){    @autoreleasepool {        return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));    }}