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];