OKHttp

 

// View
public class MainActivity extends AppCompatActivity implements IContract.IView {

    @BindView(R.id.et_location)
    EditText etLocation;
    @BindView(R.id.btn_confirm)
    Button btnConfirm;
    private IContract.IPresenter<IContract.IView> presenter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ButterKnife.bind(this);
        //创建P层对象
        presenter = new PresenterImpl();
        //关联V层对象
        presenter.attachView(this);
    }

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

    @Override
    protected void onDestroy() {
        super.onDestroy();
        //取消解绑V层
        presenter.detachView(this);
    }

    @OnClick(R.id.btn_confirm)
    public void onViewClicked() {
        //获取输入框内容：地址
        String location = etLocation.getText().toString();

        presenter.requestInfo(location);
    }
}




//Modle

@Override
    public void requestData(String userName, String pwd, String rePwd, final onCallBackLisenter onCallBackLisenter) {
        if (userName.equals("") || pwd.equals("") || rePwd.equals("")) {
            onCallBackLisenter.responseMsg("用户名或密码为空");
            return;
        }
        FormBody formBody = new FormBody.Builder()
                .add("username", userName)
                .add("password", pwd)
                .add("repassword", rePwd)
                .build();
        OKHttpUtil.getInstance().post(URL_STRING, formBody, new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                String failureString = e.getMessage().toString();
                onCallBackLisenter.responseMsg(failureString);

                Log.e("ModelImpl", failureString);
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                String reponseString = response.body().string();
                onCallBackLisenter.responseMsg(reponseString);
                Log.e("ModelImpl", reponseString);
                Gson gson = new Gson();
                ResponseBean responseBean = gson.fromJson(reponseString, ResponseBean.class);

            }
        });
    }

//Pressenter
public class PresenterImpl implements IContract.IPresenter<IContract.IView> {

    private WeakReference<IContract.IView> viewWeakReference;
    IContract.IView iView;
    private ModelImpl model;
    private WeakReference<IContract.IModel> modelWeakReference;

    @Override
    public void attachView(IContract.IView iView) {
        this.iView = iView;
        //获取M层对象
        model = new ModelImpl();
        //弱引用包裹V层、M层对象
        viewWeakReference = new WeakReference<>(iView);
        modelWeakReference = new WeakReference<IContract.IModel>(model);
    }

    @Override
    public void detachView(IContract.IView iView) {
        //弱引用解绑/去除包裹的V层、M层对象
        viewWeakReference.clear();
        modelWeakReference.clear();
    }

    @Override
    public void requestInfo(String location) {
        model.requestData(location,new IContract.IModel.onCallBack() {
            @Override
            public void responseMsg(String response) {
                iView.showData(response);
            }
        });
    }
}



//App 得到上下文
public class App extends Application {
    private static App app;

    @Override
    public void onCreate() {
        super.onCreate();
        app = this;
    }

    public static App getInstance() {
        return app;
    }
}