获取微博数据

#import <UIKit/UIKit.h>

@interface IWOAuthViewController : UIViewController

@end

#import "IWOAuthViewController.h"
#import "MBProgressHUD+MJ.h"
#import "AFNetworking.h"
#import "MJExtension.h"
#import "IWAccount.h"
#import "IWAccountTool.h"
#import "HomeViewController.h"

@interface IWOAuthViewController ()<UIWebViewDelegate>

@end

@implementation IWOAuthViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    
    UIWebView *webView = [[UIWebView alloc] init];
    webView.frame = self.view.bounds;
    webView.delegate = self;
    [self.view addSubview:webView];
    self.view.backgroundColor = [UIColor orangeColor];
    
    //PiersNovia;3989606836;0300642b574cdcd130f008bf3500f20b;http://www.baidu.com
    //加载页面,这里加载失败的话需要修改plist文件
    NSURL *url = [NSURL URLWithString:@"https://api.weibo.com/oauth2/authorize?client_id=3989606836&redirect_uri=http://www.baidu.com"];
    NSURLRequest *requset = [NSURLRequest requestWithURL:url];
    [webView loadRequest:requset];
}
#pragma mark - webView回调方法
- (void)webViewDidStartLoad:(UIWebView *)webView
{
    // 显示提醒框
    [MBProgressHUD showMessage:@"哥正在帮你加载中..."];
}
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
    // 隐藏提醒框
    [MBProgressHUD hideHUD];
}
- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error
{
    // 隐藏提醒框
    [MBProgressHUD hideHUD];
}
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
    
    //每一次网络请求都会返回一个request,我们要拿到一个code
    NSString *urlStr = request.URL.absoluteString;
    
    // should start == http://www.baidu.com/?code=9d3115d76eb1ab915f391514ceb20dbd
    NSRange range = [urlStr rangeOfString:@"code="];
    if (range.length) {
        
         //0. 拿到code
        NSString *code = [urlStr substringFromIndex:range.location+range.length];
        
        
        // 1.创建请求管理对象
        AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];
        
        // 2.封装请求参数
        NSMutableDictionary *params = [NSMutableDictionary dictionary];
        params[@"client_id"] = @"3989606836";
        params[@"client_secret"] = @"0300642b574cdcd130f008bf3500f20b";
        params[@"grant_type"] = @"authorization_code";
        params[@"code"] = code;
        params[@"redirect_uri"] = @"http://www.baidu.com";
        
        // 3.发送请求
        [mgr POST:@"https://api.weibo.com/oauth2/access_token" parameters:params
          success:^(AFHTTPRequestOperation *operation, id responseObject) {
              //解析文件形成模型
              IWAccount *account =[IWAccount objectWithKeyValues:responseObject];
              //存储模型
              [IWAccountTool saveAccount:account];
              
              //跳转
              [self presentViewController:[HomeViewController new] animated:YES completion:nil];
              
              
              [MBProgressHUD hideHUD];
          } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
              // 隐藏提醒框
              [MBProgressHUD hideHUD];
          }];
        
        
        [MBProgressHUD hideHUD];
        
    }
    return YES;
}