前言
本章我们基于重构的方式进行一个 MVVM 的实战，我们将一个新闻列表的普通实现，一步一步的改造成 MVVM 的架构模式，一共分为上中下三个章节，本章继续上一章，开始中篇的讲解；
控件化
我们本章向控件化进一步迈进
BaseView 重构
我们上一章，将 TitleView 和 PictureTitleView 抽取了一个 BaseView 来抽取公共的 setData 逻辑，我们还可以继续精进一步；
我们现将我们上一章定义的接口 BaseView 重命名成 IBaseView
public interface IBaseView<DATA extends BaseViewModel> {void setData(DATA data);
}
然后我们定义一个 IBaseView 的实现类，BaseView
public abstract class BaseView extends LinearLayout implements IBaseView<BaseViewModel> {public BaseView(Context context) {super(context);}public BaseView(Context context, @Nullable AttributeSet attrs) {super(context, attrs);}public BaseView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);}public BaseView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {super(context, attrs, defStyleAttr, defStyleRes);}@Overridepublic void setData(BaseViewModel baseViewModel) {}
}
然后我们定义公共的 init 方法，方法中我们进行布局的加载，但是布局 id 我们无法从自身获取，需要通过 工厂方法 模式，提供一个抽象接口来从子类中获取布局 id；同时，通过 泛型 来接收 DataBinding 在 inflater 之后返回的 ViewDataBinding 对象，整体如下：
public abstract class BaseView<VIEW_BINDING extends ViewDataBinding> extends LinearLayout implements IBaseView<BaseViewModel> {protected VIEW_BINDING mBinding;private void init() {LayoutInflater layoutInflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);mBinding = DataBindingUtil.inflate(layoutInflater, getLayoutId(), this, false);addView(mBinding.getRoot());}public abstract int getLayoutId();
}
通常，View 可能会需要一个点击事件，我们这里也提供一下
private void init() {LayoutInflater layoutInflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);mBinding = DataBindingUtil.inflate(layoutInflater, getLayoutId(), this, false);mBinding.getRoot().setOnClickListener(this::onRootClick);addView(mBinding.getRoot());
}public abstract int getLayoutId();public abstract void onRootClick(View view);
然后，我们来实现 setData 部分，这里我们将泛型的实现交给 BaseView
public abstract class BaseView<VIEW_BINDING extends ViewDataBinding, DATA extends BaseViewModel> extends LinearLayout implements IBaseView<DATA> {}
然后，我们发现，当我们在 setData 中去 setViewModel 的时候，报错了，并没有 setViewModel 的接口，那么我们就需要进行剥离出来，交给子类实现；
public abstract class BaseView<VIEW_BINDING extends ViewDataBinding, DATA extends BaseViewModel> extends LinearLayout implements IBaseView<DATA> {@Overridepublic void setData(DATA baseViewModel) {setDataToView(baseViewModel);mBinding.executePendingBindings();}public abstract void setDataToView(DATA data);
}
我们接下来重构 TitleView 和 PictureTitleView，来让它们继承 BaseView
public class TitleView extends BaseView<TitleViewBinding, TitleViewModel> {public TitleView(Context context) {super(context);}@Overridepublic int getLayoutId() {return R.layout.title_view;}@Overridepublic void onRootClick(View view) {}@Overridepublic void setDataToView(TitleViewModel titleViewModel) {mBinding.setTitleViewModel(titleViewModel);}
}
PictureTitleView
public class PictureTitleView extends BaseView<PictureTitleViewBinding, PictureTitleViewModel> {public PictureTitleView(Context context) {super(context);}@Overridepublic int getLayoutId() {return R.layout.picture_title_view;}@Overridepublic void onRootClick(View view) {}@Overridepublic void setDataToView(PictureTitleViewModel pictureTitleViewModel) {mBinding.setPictureTitleViewModel(pictureTitleViewModel);}@BindingAdapter("loadImageUrl")public static void loadImageUrl(ImageView imageView, String imgUrl) {Glide.with(imageView.getContext()).load(imgUrl).transition(withCrossFade()).into(imageView);}
}
可以看到，我们的 TitleView 和 PictureTitleView 也清爽了很多；到这里，对齐了我们在讲 MVx 的时候的 控件化 的重要性；
Model
我们接下来，终于可以向 MVVM 的架构来迈进了，我们先来看下我们的 Fragment，一开始我们把数据的加载直接放在了 Fragment 中，这其实并不合理，我们需要将数据的获取放到 model 层，我们来进行重构；
首先我们在 base 层定义下我们的 baseModel，创建一个 IBaseModelListener，用来将 model 获取的数据回调到 View
public interface IBaseModelListener<DATA> {void onLoadSuccess(DATA data);void onLoadFail(int errorCode, String errorMsg);
}
然后我们定义一个我们用来获取频道列表的 model
public class NewsChannelModel {private IBaseModelListener<List<NewsChannelsBean.ChannelList>> mListener;public NewsChannelModel(IBaseModelListener<List<NewsChannelsBean.ChannelList>> mListener) {this.mListener = mListener;}public void load() {TecentNetworkApi.getService(NewsApiInterface.class).getNewsChannels().compose(TecentNetworkApi.getInstance().applySchedulers(new BaseObserver<NewsChannelsBean>() {@Overridepublic void onSuccess(NewsChannelsBean newsChannelsBean) {mListener.onLoadSuccess(newsChannelsBean.showapiResBody.channelList);}@Overridepublic void onFailure(Throwable e) {e.printStackTrace();mListener.onLoadFail(400, e.getMessage());}}));}
}
然后，我们在 Fragment 中调用这个 model 的 load 方法；
public class HeadlineNewsFragment extends Fragment implements IBaseModelListener<List<NewsChannelsBean.ChannelList>> {public HeadlineNewsFragmentAdapter adapter;private FragmentHomeBinding viewDataBinding;private NewsChannelModel model;@Overridepublic View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {viewDataBinding = DataBindingUtil.inflate(inflater, R.layout.fragment_home, container, false);adapter = new HeadlineNewsFragmentAdapter(getChildFragmentManager());viewDataBinding.tablayout.setTabMode(TabLayout.MODE_SCROLLABLE);viewDataBinding.viewpager.setAdapter(adapter);viewDataBinding.tablayout.setupWithViewPager(viewDataBinding.viewpager);viewDataBinding.viewpager.setOffscreenPageLimit(1);model = new NewsChannelModel(this);model.load();return viewDataBinding.getRoot();}@Overridepublic void onLoadSuccess(List<NewsChannelsBean.ChannelList> channelLists) {if (adapter != null) {adapter.setChannels(channelLists);}}@Overridepublic void onLoadFail(int errorCode, String errorMsg) {}
}
Fragment 也清爽了很多，我们接下来重构下 NewsListFragment，重构逻辑一样，我们封装一个 NewListModel
public class NewsListModel {private IBaseModelListener<ArrayList<BaseViewModel>> mListener;private int mPageNum;private String mChannelId;private String mChannelName;public NewsListModel(IBaseModelListener<ArrayList<BaseViewModel>> mListener, String channelId, String channelName) {this.mListener = mListener;this.mChannelId = channelId;this.mChannelName = channelName;}public void load() {TecentNetworkApi.getService(NewsApiInterface.class).getNewsList(mChannelId,mChannelName, String.valueOf(mPageNum)).subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread()).flatMap(new Function<NewsListBean, ObservableSource<ArrayList<BaseViewModel>>>() {@Overridepublic ObservableSource<ArrayList<BaseViewModel>> apply(NewsListBean newsChannelsBean) throws Exception {ArrayList<BaseViewModel> viewModels = new ArrayList<>();for (NewsListBean.Contentlist contentlist : newsChannelsBean.showapiResBody.pagebean.contentlist) {if (contentlist.imageurls != null && contentlist.imageurls.size() > 0) {PictureTitleViewModel pictureTitleViewModel = new PictureTitleViewModel();pictureTitleViewModel.imgUrl = contentlist.imageurls.get(0).url;pictureTitleViewModel.title = contentlist.title;pictureTitleViewModel.jumpUrl = contentlist.link;viewModels.add(pictureTitleViewModel);} else {TitleViewModel titleViewModel = new TitleViewModel();titleViewModel.title = contentlist.title;titleViewModel.jumpUrl = contentlist.link;viewModels.add(titleViewModel);}}return Observable.just(viewModels);}}).subscribe(new Consumer<ArrayList<BaseViewModel>>() {@Overridepublic void accept(ArrayList<BaseViewModel> baseViewModels) throws Exception {mPageNum++;mListener.onLoadSuccess(baseViewModels);}});}public void refresh() {mPageNum = 1;load();}
}
然后 NewListFragment 重构如下：
public class NewsListFragment extends Fragment implements IBaseModelListener<ArrayList<BaseViewModel>> {private NewsListRecyclerViewAdapter mAdapter;private FragmentNewsBinding viewDataBinding;private NewsListModel mNewsListModel;protected final static String BUNDLE_KEY_PARAM_CHANNEL_ID = "bundle_key_param_channel_id";protected final static String BUNDLE_KEY_PARAM_CHANNEL_NAME = "bundle_key_param_channel_name";public static NewsListFragment newInstance(String channelId, String channelName) {NewsListFragment fragment = new NewsListFragment();Bundle bundle = new Bundle();bundle.putString(BUNDLE_KEY_PARAM_CHANNEL_ID, channelId);bundle.putString(BUNDLE_KEY_PARAM_CHANNEL_NAME, channelName);fragment.setArguments(bundle);return fragment;}@Overridepublic View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {viewDataBinding = DataBindingUtil.inflate(inflater, R.layout.fragment_news, container, false);mAdapter = new NewsListRecyclerViewAdapter(getContext());viewDataBinding.listview.setHasFixedSize(true);viewDataBinding.listview.setLayoutManager(new LinearLayoutManager(getContext()));viewDataBinding.listview.setAdapter(mAdapter);mNewsListModel = new NewsListModel(this, getArguments().getString(BUNDLE_KEY_PARAM_CHANNEL_ID),getArguments().getString(BUNDLE_KEY_PARAM_CHANNEL_NAME));mNewsListModel.load();viewDataBinding.refreshLayout.setOnRefreshListener(new OnRefreshListener() {@Overridepublic void onRefresh(@NonNull RefreshLayout refreshLayout) {mNewsListModel.refresh();}});viewDataBinding.refreshLayout.setOnLoadMoreListener(new OnLoadMoreListener() {@Overridepublic void onLoadMore(@NonNull RefreshLayout refreshLayout) {mNewsListModel.load();}});return viewDataBinding.getRoot();}@Overridepublic void onLoadSuccess(ArrayList<BaseViewModel> baseViewModels) {contentList.addAll(baseViewModels);mAdapter.setData(contentList);viewDataBinding.refreshLayout.finishRefresh();viewDataBinding.refreshLayout.finishLoadMore();}@Overridepublic void onLoadFail(int errorCode, String errorMsg) {}
}
我们这个页面的数据加载，涉及到了分页的逻辑，我们需要将回调的结果带上分页的结果，要告知 View 是加载的哪一页，我们需要一个分页结果；
public class PageResult {private boolean isFirstPage;private boolean isEmpty;private boolean hasNextPage;public PageResult(boolean isFirstPage, boolean isEmpty, boolean hasNextPage) {this.isFirstPage = isFirstPage;this.isEmpty = isEmpty;this.hasNextPage = hasNextPage;}
}
然后，我们修改回调结果的 Listener，这个接口是公共的，也就是说，有的需要分页结果，有的不需要分页结果，那么就需要一个可变参数；
public interface IBaseModelListener<DATA> {void onLoadSuccess(DATA data, PageResult... pageResults);void onLoadFail(int errorCode, String errorMsg);
}
然后，NewsListModel 的回调带上这个 PageResult；
mListener.onLoadSuccess(baseViewModels,new PageResult(mPageNum == 1, baseViewModels.isEmpty(), baseViewModels.size() >= 10));
onLoadSuccess 的回调改造如下：
@Override
public void onLoadSuccess(ArrayList<BaseViewModel> baseViewModels, PageResult... pageResults) {if (pageResults != null && pageResults.length > 0 && pageResults[0].isFirstPage) {contentList.clear();}contentList.addAll(baseViewModels);mAdapter.setData(contentList);viewDataBinding.refreshLayout.finishRefresh();viewDataBinding.refreshLayout.finishLoadMore();
}
到这的时候，我们的 model 层就抽离出来了，可能看到这的时候，好多人就疑问了，你这也没使用 Jetpack 的 ViewModel 和 LiveData 呀，别着急，我们精彩的还在后面；
BaseModel
可以看到，NewChannelModel 和 NewListModel 中都有 IBaseModelListener，这个是可以抽取到 base 层的，所以我们可以创建一个 BaseMvvmModel 来抽取它；
public abstract class BaseMvvmModel {protected WeakReference<IBaseModelListener> mReferenceIBaseModeListener;public void register(IBaseModelListener listener) {if (listener != null) {mReferenceIBaseModeListener = new WeakReference<>(listener);}}
}
然后，NewListModel 和 NewsChannelModel 分别继承 BaseMvvmModel，同时移除子类 model 中的 IBaseModelListener 的声明；
public class NewsListModel extends BaseMvvmModel {private int mPageNum;private final String mChannelId;private final String mChannelName;public NewsListModel(String channelId, String channelName) {this.mChannelId = channelId;this.mChannelName = channelName;}public void load() {TecentNetworkApi.getService(NewsApiInterface.class).getNewsList(mChannelId,mChannelName, String.valueOf(mPageNum)).subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread()).flatMap(new Function<NewsListBean, ObservableSource<ArrayList<BaseViewModel>>>() {@Overridepublic ObservableSource<ArrayList<BaseViewModel>> apply(NewsListBean newsChannelsBean) throws Exception {ArrayList<BaseViewModel> viewModels = new ArrayList<>();for (NewsListBean.Contentlist contentlist : newsChannelsBean.showapiResBody.pagebean.contentlist) {if (contentlist.imageurls != null && contentlist.imageurls.size() > 0) {PictureTitleViewModel pictureTitleViewModel = new PictureTitleViewModel();pictureTitleViewModel.imgUrl = contentlist.imageurls.get(0).url;pictureTitleViewModel.title = contentlist.title;pictureTitleViewModel.jumpUrl = contentlist.link;viewModels.add(pictureTitleViewModel);} else {TitleViewModel titleViewModel = new TitleViewModel();titleViewModel.title = contentlist.title;titleViewModel.jumpUrl = contentlist.link;viewModels.add(titleViewModel);}}return Observable.just(viewModels);}}).subscribe(new Consumer<ArrayList<BaseViewModel>>() {@Overridepublic void accept(ArrayList<BaseViewModel> baseViewModels) throws Exception {mPageNum++;mReferenceIBaseModeListener.get().onLoadSuccess(baseViewModels,new PageResult(mPageNum == 1, baseViewModels.isEmpty(), baseViewModels.size() >= 10));}});}public void refresh() {mPageNum = 1;load();}
}
NewsChannelModel 重构如下：
public class NewsChannelModel extends BaseMvvmModel {public NewsChannelModel() {}public void load() {TecentNetworkApi.getService(NewsApiInterface.class).getNewsChannels().compose(TecentNetworkApi.getInstance().applySchedulers(new BaseObserver<NewsChannelsBean>() {@Overridepublic void onSuccess(NewsChannelsBean newsChannelsBean) {mReferenceIBaseModeListener.get().onLoadSuccess(newsChannelsBean.showapiResBody.channelList);}@Overridepublic void onFailure(Throwable e) {e.printStackTrace();mReferenceIBaseModeListener.get().onLoadFail(400, e.getMessage());}}));}
}
然后对应的 Fragment 也需要重构下：
mNewsListModel = new NewsListModel(getArguments().getString(BUNDLE_KEY_PARAM_CHANNEL_ID),getArguments().getString(BUNDLE_KEY_PARAM_CHANNEL_NAME));
mNewsListModel.register(this);
model = new NewsChannelModel();
model.register(this);
然后，我们的 page 其实也可以抽取到 base 层，通过可变参数的形式来决定分页的内容以及是否要分页，所以 BaseMvvmModel 继续重构；
public abstract class BaseMvvmModel {protected WeakReference<IBaseModelListener> mReferenceIBaseModeListener;protected boolean mIsPaging;protected final int INIT_PAGE_NUMBER;public BaseMvvmModel(boolean isPaging, int... initPageNumber) {if (isPaging && initPageNumber != null && initPageNumber.length > 0) {INIT_PAGE_NUMBER = initPageNumber[0];} else {INIT_PAGE_NUMBER = -1;}}public void register(IBaseModelListener listener) {if (listener != null) {mReferenceIBaseModeListener = new WeakReference<>(listener);}}
}
子类实现中，也需要重构下
NewsChannelModel 的构造方法重构如下：
public NewsChannelModel() {super(false);
}
NewsListModel 的构造方法重构如下：
public NewsListModel(String channelId, String channelName) {super(true, 1);this.mChannelId = channelId;this.mChannelName = channelName;
}
到这里的时候，有人可能会问，INIT_PAGE_NUMBER 没有用到呀，定义它做什么？别急，它来了，我们其实也可以把 NewListModel 中的 refresh 和 load 提取到 base 层；
public abstract class BaseMvvmModel {public void refresh() {mPageNum = INIT_PAGE_NUMBER;load();}public abstract void load();
}
这样，我们定义的 INIT_PAGE_NUMBER 是不是就使用到了；然后我们还可以给 refresh 加上多次加载控制，如果正在加载中则不触发二次请求，所以需要我们定义一个变量来控制是否正在加载，同时我们来区分下加载下一页和加载；
public abstract class BaseMvvmModel {protected boolean isLoading;public void refresh() {if (!isLoading) {if (mIsPaging) {mPageNum = INIT_PAGE_NUMBER;}isLoading = true;load();}}public void loadNextPage() {if (!isLoading) {isLoading = true;load();}}
}
另外，我们在子类 model 中分别操作了 BaseMvvmModel 中的 mPageNum 和 mReferenceIBaseModeListener 这两个的操作也是需要抽取到 base 层的，我们来继续重构；
public abstract class BaseMvvmModel<RESULT_DATA> {//protected void notifyResultToListener(RESULT_DATA data) {IBaseModelListener listener = mReferenceIBaseModeListener.get();if (listener != null) {if (mIsPaging) {listener.onLoadSuccess(this, data, new PageResult(mPageNum == INIT_PAGE_NUMBER, data == null?true: ((List)data).isEmpty(), ((List)data).size() > 10));} else {listener.onLoadSuccess(this, data);}}if (mIsPaging) {if (data != null && ((List)data).size() > 0) {mPageNum ++;}}isLoading = false;}protected void loadFail(int errorCode, String errorMsg) {IBaseModelListener listener = mReferenceIBaseModeListener.get();if (listener != null) {listener.onLoadFail(errorCode, errorMsg);}isLoading = false;}
}
然后子类 model 中直接调用对应的 notifyResultToListener 和 loadFail
NewsListModel
subscribe(new Consumer<ArrayList<BaseViewModel>>() {@Overridepublic void accept(ArrayList<BaseViewModel> baseViewModels) throws Exception {notifyResultToListener(baseViewModels);}
});
NewsChannelModel
.compose(TecentNetworkApi.getInstance().applySchedulers(new BaseObserver<NewsChannelsBean>() {@Overridepublic void onSuccess(NewsChannelsBean newsChannelsBean) {notifyResultToListener(newsChannelsBean.showapiResBody.channelList);}@Overridepublic void onFailure(Throwable e) {e.printStackTrace();loadFail(404, e.getMessage());}
}));
数据缓存
如果我们在无网的情况下打开 app，通常会展示一片空白，体验很不好，所以，就需要我们提前将数据缓存下来，当用户无网打开的时候，不至于显示一片白；
首先，我们来提供一个 CacheData；
public class BaseCachedData<DATA> {public long updateTimeInMills;public DATA data;
}
然后我们需要对 BaseMvvmModel 进行重构，增加缓存逻辑；
public abstract class BaseMvvmModel<NETWORK_DATA, RESULT_DATA> {private String mCachedPreferenceKey;private BaseCachedData<NETWORK_DATA> mData;public BaseMvvmModel(boolean isPaging, String cachedPreferenceKey, int... initPageNumber) {if (isPaging && initPageNumber != null && initPageNumber.length > 0) {INIT_PAGE_NUMBER = initPageNumber[0];} else {INIT_PAGE_NUMBER = -1;}// 增加缓存keythis.mCachedPreferenceKey = cachedPreferenceKey;}protected void notifyResultToListener(NETWORK_DATA networkData, RESULT_DATA data) {IBaseModelListener listener = mReferenceIBaseModeListener.get();if (listener != null) {if (mIsPaging) {listener.onLoadSuccess(this, data, new PageResult(mPageNum == INIT_PAGE_NUMBER, data == null ? true : ((List) data).isEmpty(), ((List) data).size() > 10));} else {listener.onLoadSuccess(this, data);}}// 增加缓存逻辑，将网络数据缓存到本地if (mIsPaging) {if (mCachedPreferenceKey != null && mPageNum == INIT_PAGE_NUMBER) {saveDataToPreference(networkData);}} else {if (mCachedPreferenceKey != null) {saveDataToPreference(networkData);}}if (mIsPaging) {if (data != null && ((List) data).size() > 0) {mPageNum++;}}}private void saveDataToPreference(NETWORK_DATA networkData) {if (networkData != null) {BaseCachedData<NETWORK_DATA> baseCachedData = new BaseCachedData<>();baseCachedData.data = networkData;baseCachedData.updateTimeInMills = System.currentTimeMillis();// 这里可以调换成自己的 spUtilsBasicDataPreferenceUtil.getInstance().setString(mCachedPreferenceKey, new Gson().toJson(baseCachedData));}}
}
同时 NewsChannelModel 和 NewsListModel 的构造方法以及 load 实现也需要重构下，增加需要缓存的数据的传入；
public class NewsChannelModel extends BaseMvvmModel<NewsChannelsBean, List<NewsChannelsBean.ChannelList>> {public NewsChannelModel() {super(false, "NEWS_CHANNEL_PREF_KEY");}@Overridepublic void load() {TecentNetworkApi.getService(NewsApiInterface.class).getNewsChannels().compose(TecentNetworkApi.getInstance().applySchedulers(new BaseObserver<NewsChannelsBean>() {@Overridepublic void onSuccess(NewsChannelsBean newsChannelsBean) {notifyResultToListener(newsChannelsBean, newsChannelsBean.showapiResBody.channelList);}@Overridepublic void onFailure(Throwable e) {e.printStackTrace();mReferenceIBaseModeListener.get().onLoadFail(400, e.getMessage());}}));}
}
NewsListModel 重构如下：
public class NewsListModel extends BaseMvvmModel<NewsListBean, ArrayList<BaseViewModel>> {private final String mChannelId;private final String mChannelName;private NewsListBean mNewsListBean;public NewsListModel(String channelId, String channelName) {super(true, channelId + channelName + "pref_key", 1);this.mChannelId = channelId;this.mChannelName = channelName;}@Overridepublic void load() {TecentNetworkApi.getService(NewsApiInterface.class).getNewsList(mChannelId,mChannelName, String.valueOf(mPageNum)).subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread()).flatMap(new Function<NewsListBean, ObservableSource<ArrayList<BaseViewModel>>>() {@Overridepublic ObservableSource<ArrayList<BaseViewModel>> apply(NewsListBean newsChannelsBean) throws Exception {ArrayList<BaseViewModel> viewModels = new ArrayList<>();NewsListModel.this.mNewsListBean = newsChannelsBean;for (NewsListBean.Contentlist contentlist : newsChannelsBean.showapiResBody.pagebean.contentlist) {if (contentlist.imageurls != null && contentlist.imageurls.size() > 0) {PictureTitleViewModel pictureTitleViewModel = new PictureTitleViewModel();pictureTitleViewModel.imgUrl = contentlist.imageurls.get(0).url;pictureTitleViewModel.title = contentlist.title;pictureTitleViewModel.jumpUrl = contentlist.link;viewModels.add(pictureTitleViewModel);} else {TitleViewModel titleViewModel = new TitleViewModel();titleViewModel.title = contentlist.title;titleViewModel.jumpUrl = contentlist.link;viewModels.add(titleViewModel);}}return Observable.just(viewModels);}}).subscribe(new Consumer<ArrayList<BaseViewModel>>() {@Overridepublic void accept(ArrayList<BaseViewModel> baseViewModels) throws Exception {notifyResultToListener(NewsListModel.this.mNewsListBean, baseViewModels);}});}
}
OK，运行可以看到，数据已经存到了 SP 中；
好了，中篇文章就讲解到这里吧；
下一章预告
MVVM 实战一个新闻客户端 (下)
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