MVP优化的结构

mvp结构图.png

view的结构

• BaseView

public interface BaseView {

    void showLoading();
    void hideLoading();

}

• NewMvpView

public interface NewMvpView extends BaseView {
    void setListItem(List<String> data);
    void showMessage(String message);
}

presenter结构

• BasePresenter

public abstract class BasePresenter<T> {
    public T mView;

    public void attach(T mView){
        this.mView = mView;
    }

    public void dettach(){
        mView = null;
    }
}

NewMvpPresenter

public class NewMvpPresenter extends BasePresenter<NewMvpView> {

    private RequestBiz requestBiz;
    private Handler mHandler;

    public NewMvpPresenter() {
        requestBiz = new RequestBiziml();
        mHandler = new Handler(Looper.getMainLooper());
    }

    public void onResume(){
        requestBiz.requestForData(new OnRequestListener() {

            @Override
            public void onSuccess(final List<String> data) {
                mHandler.post(new Runnable() {
                    @Override
                    public void run() {
                        mView.hideLoading();
                        mView.setListItem(data);
                    }
                });
            }

            @Override
            public void onFailed() {
                mView.showMessage("请求失败");
            }
        });
    }

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

activity结构

• BaseMvpActivity

public abstract class BaseMvpActivity<V,T extends BasePresenter<V>> extends AppCompatActivity {

    public T presenter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        presenter = initPresenter();
    }

    @Override
    protected void onResume() {
        super.onResume();
        presenter.attach((V)this);
    }

    @Override
    protected void onDestroy() {
        presenter.dettach();
        super.onDestroy();
    }

    public abstract T initPresenter();

}

• NewMvpActivity

public class NewMvpActivity extends BaseMvpActivity<NewMvpView,NewMvpPresenter> implements NewMvpView,AdapterView.OnItemClickListener{

    private ListView mvpListView;
    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);
    }

    @Override
    protected void onResume() {
        super.onResume();
        presenter.onResume();
    }

    @Override
    public NewMvpPresenter initPresenter() {
        return new NewMvpPresenter();
    }

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

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

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

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

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