环信的官方demo太复杂,根据视频集成UI各种BUG,chatview跳转总是崩溃

文件会缺失很多,所以我又加了很多class文件夹除了chatview之外的文件夹,编译是通过了
但是在点击button登陆跳转到chatview时总会崩溃
reason: '-[EaseMob callManager]: unrecognized selector sent to instance 0x7fb95b468e50'
 
跳转代码
    ChatViewController * chatVC = [[ChatViewController alloc]initWithChatter:@"fanffff" isGroup:NO];

    //chatVC.title = @"fanffff";

    UINavigationController * nav = [[UINavigationController alloc]initWithRootViewController:chatVC];

    [self presentViewController:nav animated:YES completion:nil];