Android MVP 加 RXjava

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本文链接： https://blog.csdn.net/LH_sunshine/article/details/102631789

MVP使用

Modle 层：

实体类

public class DataModule {

    List data = new ArrayList();

     ModuleInterface mCallback;

    public DataModule(ModuleInterface moduleInterface){
        this.mCallback = moduleInterface;
    }

    //模拟数据处理
    public void getdata() {
        Observable.create(new ObservableOnSubscribe<List<String>>() {
            @Override
            public void subscribe(@NonNull ObservableEmitter<List<String>> e) throws Exception {
                for (int i = 0; i <100; i++) {
                    data.add(i + "items");
                }
                e.onNext(data);
            }
        }).subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Observer<List<String>>() {
                    @Override
                    public void onSubscribe(Disposable d) {

                    }

                    @Override
                    public void onNext(List<String> strings) {

                        mCallback.LoadSuccess(strings);
                    }

                    @Override
                    public void onError(Throwable e) {
                         mCallback.LoadFailed();
                    }

                    @Override
                    public void onComplete() {

                    }
                });
    }

}

接口

public interface ModuleInterface {
    //获取数据状态回调的接口
    void LoadSuccess(List<String> data);

    void LoadFailed();
}

Presenter 层

实体类：

public class MvpPresenter  implements ModuleInterface {

    private MvpView mvpView;

    //获取Module实例，执行数据处理方法。
    DataModule dataModule = new DataModule(this);;
    public MvpPresenter(MvpView mvpView){
        this.mvpView = mvpView;

    }





    public void handledata() {
        mvpView.showLoading();
        dataModule.getdata();
    }

    public void onItemClick(int position){
        mvpView.showMessage("点击了item"+position);
    }


    @Override
    public void LoadSuccess(List<String> data) {
        mvpView.hideLoading();
        mvpView.setListItem(data);
}

    @Override
    public void LoadFailed() {
     //处理失败后View的操作
        mvpView.failed();
    }
}

View 层

实体类：

public class MvpActivity extends AppCompatActivity implements MvpView,AdapterView.OnItemClickListener{

    private ListView mvpListView;
    private MvpPresenter mvpPresenter;
    private ProgressBar pb;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_mvp);
            mvpListView = (ListView)findViewById(R.id.mvp_listview);
            mvpListView.setOnItemClickListener(this);
            pb = (ProgressBar) findViewById(R.id.mvp_loading);
            mvpPresenter = new MvpPresenter(this);
            //开始执行
            mvpPresenter.handledata();
        }

        @Override
        public void showLoading() {
            pb.setVisibility(View.VISIBLE);
        }

        @Override
        public void hideLoading() {
         pb.setVisibility(View.GONE);
    }

    @Override
    public void setListItem(List<String> data) {
        ArrayAdapter adapter = new ArrayAdapter(MvpActivity.this,android.R.layout.simple_list_item_1,data);
        mvpListView.setAdapter(adapter);
    }

    @Override
    public void failed() {
        Toast.makeText(MvpActivity.this,"加载失败",Toast.LENGTH_SHORT).show();
    }

    @Override
    public void showMessage(String message) {
        Toast.makeText(this,message,Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        mvpPresenter.onItemClick(position);
    }

}

接口：

public interface MvpView {
       void showLoading();
       void hideLoading();
       void setListItem(List<String> data);
       void failed();
       void showMessage(String message);
}