我正在使用Android支持库26.1.0。以下是app模块中的依赖项：

implementation "android.arch.lifecycle:runtime:1.0.0"
implementation "android.arch.lifecycle:extensions:1.0.0-beta1"
implementation "android.arch.persistence.room:rxjava2:1.0.0-beta1"
implementation "android.arch.lifecycle:common-java8:1.0.0-beta1"
annotationProcessor "android.arch.lifecycle:compiler:1.0.0-beta1"

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但是当我尝试像下面这样使用ViewModel时：

mUserViewModel.getUsers().observe(this,
            (Observer<Resource<List<UserView>>>) listResource -> {
                if(listResource != null){
                    this.handleDataState(listResource.status, listResource.data, listResource.message);
                }
            });

型
在this处显示错误，错误消息为Wrong first argument type Found: packagename.BrowseActivity, required: android.arch.lifecycle.LifecycleOwner。（尽管支持库版本为26.1+，已经实现了LifecycleOwner）
我也尝试过实现LifecycleRegistryOwner，我在这个sample中发现了它，这也不起作用。请提出一个解决方案，让我知道如果我做错了什么。

编辑1-这是一个Activity类：

import android.arch.lifecycle.Observer;
import android.arch.lifecycle.ViewModelProviders;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.ProgressBar;

import com.github.amitkma.boilerplate.app.R;
import com.github.amitkma.boilerplate.app.mapper.UserMapper;
import com.github.amitkma.boilerplate.app.model.UserModel;
import com.github.amitkma.boilerplate.app.ui.widget.EmptyView;
import com.github.amitkma.boilerplate.app.ui.widget.ErrorView;
import com.github.amitkma.boilerplate.presentation.data.Resource;
import com.github.amitkma.boilerplate.presentation.data.ResourceState;
import com.github.amitkma.boilerplate.presentation.factory.ViewModelFactory;
import com.github.amitkma.boilerplate.presentation.viewmodel.UserViewModel;
import com.github.amitkma.boilerplate.presentation.vo.UserView;

import java.util.ArrayList;
import java.util.List;

import javax.inject.Inject;

import dagger.android.AndroidInjection;

public class BrowseActivity extends AppCompatActivity {

    @Inject
    UserAdapter mUserAdapter;
    @Inject
    UserMapper mUserMapper;
    @Inject
    ViewModelFactory mViewModelFactory;
    private UserViewModel mUserViewModel;

    private RecyclerView mRecyclerView;
    private ProgressBar mProgressBar;
    private ErrorView mErrorView;
    private EmptyView mEmptyView;

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       AndroidInjection.inject(this);
       setContentView(R.layout.activity_browse);
       mUserViewModel = ViewModelProviders.of(this, mViewModelFactory)
            .get(UserViewModel.class);

       mRecyclerView = findViewById(R.id.recycler_browse);
       mProgressBar = findViewById(R.id.progress);
       mEmptyView = findViewById(R.id.view_empty);
       mErrorView = findViewById(R.id.view_error);

       setupBrowseRecycler();
       setupViewListeners();
   }

    @Override
    protected void onStart() {
        super.onStart();
        mUserViewModel.getUsers().observe(this,
            (Observer<Resource<List<UserView>>>) listResource -> {
                if(listResource != null){
                    this.handleDataState(listResource.status, listResource.data, listResource.message);
                }
            });
    }
    ....
}

型
这是ViewModel类：

import android.arch.lifecycle.LiveData;
import android.arch.lifecycle.MutableLiveData;
import android.arch.lifecycle.ViewModel;

import com.github.amitkma.boilerplate.domain.interactor.GetUserList;
import com.github.amitkma.boilerplate.domain.model.User;
import com.github.amitkma.boilerplate.presentation.data.Resource;
import com.github.amitkma.boilerplate.presentation.data.ResourceState;
import com.github.amitkma.boilerplate.presentation.mapper.UserMapper;
import com.github.amitkma.boilerplate.presentation.vo.UserView;

import java.util.ArrayList;
import java.util.List;

import javax.inject.Inject;

import io.reactivex.subscribers.DisposableSubscriber;

public class UserViewModel extends ViewModel {

    private final GetUserList mGetUserList;
    private final UserMapper mUserMapper;

    @Inject
    public UserViewModel(GetUserList getUserList,
            UserMapper userMapper) {
        mGetUserList = getUserList;
        mUserMapper = userMapper;
        fetchUsers();
    }

    public void fetchUsers(){
        mUserMutableLiveData.postValue(new Resource(ResourceState.LOADING, null, null));
        mGetUserList.execute(new UserSubscriber(), null);
    }

    public LiveData<Resource<List<UserView>>> getUsers(){
        return mUserMutableLiveData;
    }

    @Override
    protected void onCleared() {
        mGetUserList.dispose();
        super.onCleared();
    }

    private final MutableLiveData<Resource<List<UserView>>> mUserMutableLiveData =
        new MutableLiveData<>();
}

型