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;}