在Android MVVM中,当相同的数据来自不同服务器端点的响应的一部分时,可以通过以下步骤从另一个存储库中更新存储库的数据:
public class MyViewModel extends ViewModel {
    private MutableLiveData data = new MutableLiveData<>();
    private MyRepository repository;
    public MyViewModel() {
        repository = new MyRepository();
    }
    public LiveData getData() {
        return data;
    }
    public void fetchDataFromServer1() {
        repository.getDataFromServer1(new MyCallback() {
            @Override
            public void onResponse(String response) {
                data.setValue(response);
            }
            @Override
            public void onFailure(String error) {
                // Handle error
            }
        });
    }
    public void fetchDataFromServer2() {
        repository.getDataFromServer2(new MyCallback() {
            @Override
            public void onResponse(String response) {
                data.setValue(response);
            }
            @Override
            public void onFailure(String error) {
                // Handle error
            }
        });
    }
}
  
public class MyRepository {
    private ApiService apiService;
    public MyRepository() {
        apiService = RetrofitClient.getApiService();
    }
    public void getDataFromServer1(MyCallback callback) {
        apiService.getDataFromServer1().enqueue(new Callback() {
            @Override
            public void onResponse(Call call, Response response) {
                if (response.isSuccessful()) {
                    callback.onResponse(response.body());
                } else {
                    callback.onFailure("Error");
                }
            }
            @Override
            public void onFailure(Call call, Throwable t) {
                callback.onFailure(t.getMessage());
            }
        });
    }
    public void getDataFromServer2(MyCallback callback) {
        apiService.getDataFromServer2().enqueue(new Callback() {
            @Override
            public void onResponse(Call call, Response response) {
                if (response.isSuccessful()) {
                    callback.onResponse(response.body());
                } else {
                    callback.onFailure("Error");
                }
            }
            @Override
            public void onFailure(Call call, Throwable t) {
                callback.onFailure(t.getMessage());
            }
        });
    }
}
        
MyCallback,用于处理服务器响应的回调。public interface MyCallback {
    void onResponse(String response);
    void onFailure(String error);
}
public class MyActivity extends AppCompatActivity {
    private MyViewModel viewModel;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_my);
        viewModel = new ViewModelProvider(this).get(MyViewModel.class);
        viewModel.getData().observe(this, new Observer() {
            @Override
            public void onChanged(String data) {
                // Update UI with new data
            }
        });
        // Fetch data from server1
        viewModel.fetchDataFromServer1();
        // Fetch data from server2
        viewModel.fetchDataFromServer2();
    }
}
 
在上述代码中,ViewModel负责从Repository获取数据并将其更新到LiveData中。Activity或Fragment观察LiveData的变化,并在数据更新时更新UI。Repository类使用Retrofit或其他网络库来从服务器获取数据,并使用回调通知ViewModel数据的变化。
请确保在代码中替换相应的网络请求代码,并根据实际情况进行修改。