第三方分享（新浪，微信，QQ）

1.去各个平台下载ShareSDK，并注册

[WXApi registerApp:WEIXINAPPID];
    [WeiboSDK registerApp:WEIBOkey];

2.AppDelegate文件

-(BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
{
    if ([url.scheme isEqualToString:WEIXINAPPID])
    {
        if (_weixinshare==nil) {
            _weixinshare=[[WeiXinShare alloc]init];
        }
      return [WXApi handleOpenURL:url delegate:_weixinshare];
    }
    else if ([url.scheme isEqualToString:@"wb1566451595"])
    {
        if (_sinaweiboshare==nil) {
            _sinaweiboshare=[[SinaWeiboShare alloc]init];
        }

        return [WeiboSDK handleOpenURL:url delegate:_sinaweiboshare];
    }
    else if ([url.scheme isEqualToString:@"tencent100794309"])
    {
        if (_tencenqqshare==nil) {
            _tencenqqshare=[[TencenQQshare alloc]init];
        }
        return [QQApiInterface handleOpenURL:url delegate:_tencenqqshare];
    }
    return YES;
}