WXLocationObject *ext = [WXLocationObject object];
    ext.lat = 22.8162750;
    ext.lng = 113.819904;

    WXMediaMessage *wxMediaMessage = [WXMediaMessage message];
    wxMediaMessage.title = @"123";
    wxMediaMessage.description = @"123";
    [wxMediaMessage setThumbImage:[UIImage imageNamed:@"logo.png"]];
    wxMediaMessage.mediaObject = ext;

   sendReq.bText = NO;
   sendReq.scene = WXSceneSession;
   sendReq.message = wxMediaMessage;

   [WXApi sendReq:sendReq completion:completion];