[iOS微博项目

github: https://github.com/hellovoidworld/HVWWeibo

 

A.发送授权请求

1.使用UIWebView加载请求页面

自定义一个继承UIViewController的HVWOAuthViewController

//
//  HVWOAuthViewController.m
//  HVWWeibo
//
//  Created by hellovoidworld on 15/2/4.
//  Copyright (c) 2015年 hellovoidworld. All rights reserved.
//

#import "HVWOAuthViewController.h"

@interface HVWOAuthViewController ()

@end

@implementation HVWOAuthViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
   
    // 创建UIWebView
    UIWebView *webView = [[UIWebView alloc] init];
    webView.frame = self.view.bounds;
   
    // 添加到主界面
    [self.view addSubview:webView];
   
    // 加载请求页面
    NSURL *url = [NSURL URLWithString:@"https://api.weibo.com/oauth2/authorize?client_id=3942775926&redirect_uri=http://www.cnblogs.com/hellovoidworld/"];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    [webView loadRequest:request];
}


@end

 

把这个控制器作为window的根控制器运行测试：

AppDelegate:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
   
    // 启动后显示状态栏
    UIApplication *app = [UIApplication sharedApplication];
    app.statusBarHidden = NO;
   
    // 设置window
    self.window = [[UIWindow alloc] init];
    self.window.frame = [UIScreen mainScreen].bounds;
  
    self.window.rootViewController = [[HVWOAuthViewController alloc] init];
    [self.window makeKeyAndVisible];
   
    return YES;
}

 

 

 

2.使用UIWebView代理拦截发送url动作，发送授权请求之后发送的url就带有access_code

/** 截取web发送请求 */
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
   
    NSString *urlStr = request.URL.absoluteString;
    NSRange range = [urlStr rangeOfString:@"http://www.cnblogs.com/hellovoidworld/?code="];
    if (range.length > 0) { // 如果是匹配的url，即发送的是带access_code的url
        // 截取access_code
        NSUInteger accessCodeLocation = range.length + range.location;
        NSString *accessCode = [urlStr substringFromIndex:accessCodeLocation];
       
        HVWLog(@"%@", accessCode);
       
        return NO; // 阻止发送，不需要跳转到重定向页面
    }
   
    return YES; // 其他情况照常发送
}

 

Output:

5bef5308ba902cc52d9f2dc34bbfdd1c

 

注意这个access_code每次都不一样的

 

 

3.获取access_token

（1）获取access_token的请求API，发送POST请求

 

（2）使用AFN框架来发送post请求

/** 根据access_code获取access_token */
- (void) accessTokenWithAccessCode:(NSString *) accessCode {
    // 创建AFN的http操作请求管理者
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

    // 参数设置
    NSMutableDictionary *param = [NSMutableDictionary dictionary];
    param[@"client_id"] = @"3942775926";
    param[@"client_secret"] = @"cc577953b2aa3aa8ea220fd15775ea35";
    param[@"grant_type"] = @"authorization_code";
    param[@"code"] = accessCode;
    param[@"redirect_uri"] = @"http://www.cnblogs.com/hellovoidworld/";
   
    // 发送请求
    [manager POST:@"https://api.weibo.com/oauth2/access_token" parameters:param success:^(AFHTTPRequestOperation *operation, NSDictionary *accountInfo) {
        [MBProgressHUD hideHUD];
       
        // 返回的是用户信息字典
        HVWLog(@"%@", accountInfo);
       
       
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        [MBProgressHUD hideHUD];
       
        HVWLog(@"请求access_token失败 ----> %@", error);
    }];
  
}

 

（3）由于新浪返回的json数据Content-Type是 text/plain，但是AFNetworking框架默认的json序列化器不能识别，所以要修改一下json序列化器的acceptableContentType

 

- (instancetype)init {
    self = [super init];
    if (!self) {
        return nil;
    }

    self.acceptableContentTypes = [NSSet setWithObjects:@"application/json", @"text/json", @"text/javascript", @"text/plain", nil];

    return self;
}

 

Output:

{
    "access_token" = "2.00A5GpAGGIUpSEff44478fe90yykBw";
    "expires_in" = 181897;
    "remind_in" = 181897;
    uid = 5508976272;

}

 

（4）保存返回的用户信息到沙盒

        // 返回的是用户信息字典
        // 存储用户信息，包括access_token到沙盒中
        NSString *docPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
        NSString *filePath = [docPath stringByAppendingPathComponent:@"accountInfo.plist"];

        [accountInfo writeToFile:filePath atomically:YES];