问题描述

我有一个简单的 Activity，其中包含 TabLayout、ViewPager 和 2 个片段.这是我的活动:

I have a simple Activity with TabLayout, ViewPager and 2 Fragments in it. Here's my Activity:

public class ManagementCompanyOverviewActivity extends BaseActivity implements ManagementCompanyOverviewView {

    private ManagementCompanyVPAdapter mVPAdapter;
    private TabLayout mTLContent;
    private ViewPager mVPContent;

    @InjectPresenter
    ManagementCompanyPresenter mPresenter;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_management_company);

        mVPAdapter = new ManagementCompanyVPAdapter(getSupportFragmentManager());

        mTLContent = (TabLayout) findViewById(R.id.tl_company_content);

        mVPContent = (ViewPager) findViewById(R.id.vp_company_content);
        mVPContent.setAdapter(mVPAdapter);
        mTLContent.setupWithViewPager(mVPContent);
    }

    @Override
    public void onAboutCompanyInfoReceivedFromServer(AboutCompanyViewModel model) {

    }

Activity 有一个 Presenter(我正在使用 Moxy)，Presenter 发送请求，获取答案，创建 JavaObject(视图模型)并使用 getViewState() 将此模型传递给 Activity.我需要将此模型从 Activity 传递给我的一个 Fragment.

Activity has a Presenter (I'm using Moxy), Presenter sends request, gets answer, creates JavaObject (view model) and with getViewState() passes this model to activity. I need to pass this model from Activity to one of my Fragments.

Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

    View view = inflater.inflate(R.layout.fragment_about_company, container, false);

    mTVName = (TextView) view.findViewById(R.id.tv_company_name);
    mTVDirector = (TextView) view.findViewById(R.id.tv_company_director);
    mTVWebsite = (TextView) view.findViewById(R.id.tv_company_website);
    mTVEmail = (TextView) view.findViewById(R.id.tv_company_email);
    mTVPhone = (TextView) view.findViewById(R.id.tv_company_phone);
    mTVSchedule = (TextView) view.findViewById(R.id.tv_company_schedule);
    mTVAddress = (TextView) view.findViewById(R.id.tv_company_address);

    return view;
}

这个片段有一些 TextViews 来显示来自我的模型的信息.如何通过这个模型?如果我知道正确，我应该创建一个侦听器，但是如何?我不完全了解如何使用它们.

This fragment has some TextViews to show the info from my model. How to pass this model? If I know it right I should create a listener, but how? I don't completely understand how to work with em.

推荐答案

好的，我做到了.

1 步:我在我的 Activity 中创建了公共接口并为其设置:

1 step: I created public interface in my Activity and setter for it:

private OnAboutDataReceivedListener mAboutDataListener;

public interface OnAboutDataReceivedListener {
        void onDataReceived(AboutCompanyViewModel model);
    }

public void setAboutDataListener(OnAboutDataReceivedListener listener) {
    this.mAboutDataListener = listener;
}

第 2 步:我在 Fragment 中实现了这个接口并设置了监听器:

2 step: I implemented this interface in my Fragment and set listener:

public class AboutCompanyFragment extends BaseFragment implements ManagementCompanyOverviewActivity.OnAboutDataReceivedListener

    @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);

            mActivity = (ManagementCompanyOverviewActivity) getActivity();
            mActivity.setAboutDataListener(this);
        }

第三步:我重写了接口的方法:

3 step: I overrided interface's method:

@Override
    public void onDataReceived(AboutCompanyViewModel model) {
        mPBName.setVisibility(View.INVISIBLE);
        mPBDirector.setVisibility(View.INVISIBLE);
        mPBWebsite.setVisibility(View.INVISIBLE);
        mPBEmail.setVisibility(View.INVISIBLE);
        mPBPhone.setVisibility(View.INVISIBLE);
        mPBSchedule.setVisibility(View.INVISIBLE);
        mPBAddress.setVisibility(View.INVISIBLE);

        mTVName.setVisibility(View.VISIBLE);
        mTVDirector.setVisibility(View.VISIBLE);
        mTVWebsite.setVisibility(View.VISIBLE);
        mTVEmail.setVisibility(View.VISIBLE);
        mTVPhone.setVisibility(View.VISIBLE);
        mTVSchedule.setVisibility(View.VISIBLE);
        mTVAddress.setVisibility(View.VISIBLE);

        mTVName.setText(model.getCompanyName());
        mTVDirector.setText(model.getDirectorName());
        mTVWebsite.setText(model.getWebsite());
        mTVEmail.setText(model.getEmail());
        mTVPhone.setText(model.getPhone());
        mTVSchedule.setText(model.getWorkTime());
        mTVAddress.setText(model.getAddress());
    }

就是这样.

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