上一篇中主要是将mvp+rxjava+retrofit进行了结合，本篇主要是对mvp框架的优化；建议先去看上一篇：Android 搭建MVP+Retrofit+RxJava网络请求框架(二)

针对view销毁时候产生的内存泄漏，对presenter持有view的引用进行优化：

public class BasePresenter {

protected V mView;

protected Context context;

protected ApiService mApiService;

private CompositeDisposable mCompositeDisposable;

//使用弱引用

private Reference mReference = null;

public BasePresenter(V v) {

this.mView = v;

initContext();

}

private void initContext() {

if (mView instanceof Fragment) {

context = ((Fragment) mView).getActivity();

} else {

context = (Context) mView;

}

}

//关联view

public void attachView(V mvpView) {

mReference = new WeakReference(mvpView);

mApiService = RetrofitHelper.getInstance().getServer();

}

//判断是否关联

public boolean isAttach() {

return null != mReference && null != mReference.get();

}

//接触关联

public void detachView() {

if (null != mReference) {

mReference.clear();

mReference = null;

}

onUnsubscribe();

}

//RXjava取消注册，以避免内存泄露

public void onUnsubscribe() {

if (mCompositeDisposable != null && mCompositeDisposable.isDisposed()) {

mCompositeDisposable.clear();

}

}

public void addSubscription(Observable observable, DisposableObserver subscriber) {

if (mCompositeDisposable == null) {

mCompositeDisposable = new CompositeDisposable();

}

observable

.subscribeOn(Schedulers.io())

.observeOn(AndroidSchedulers.mainThread())

.subscribeWith(subscriber);

mCompositeDisposable.add(subscriber);

}

}

在view进行销毁时候，接触关联，并且使用弱引用，可以优先被gc回收；

抽出一个MvpActivity 来简化项目，让所有使用mvp结构的avtivity继承这个类，在oncreate方法中关联view,在销毁的时候进行接触关联；

public abstract class MvpActivity

extends BaseActivity implements BaseView{

protected P mvpPresenter;

@Override

protected void onCreate(Bundle savedInstanceState) {

mvpPresenter = createPresenter();

super.onCreate(savedInstanceState);

mvpPresenter.attachView(this);

}

protected abstract P createPresenter();

@Override

protected void onDestroy() {

super.onDestroy();

if (mvpPresenter != null) {

mvpPresenter.detachView();

}

}

public void showLoading() {

showProgressDialog();

}

public void hideLoading() {

dismissProgressDialog();

}

}

3.在mainActivity中继承MvpActivity

public class MainActivity extends MvpActivity implements BookInfoContract.IView {

@BindView(R.id.text)

TextView text;

@BindView(R.id.button)

Button button;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

bindClick();

}

@Override

protected BookPresenter createPresenter() {

return new BookPresenter(this);

}

private void bindClick() {

button.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

//开始请求

mvpPresenter.getMsg("人间失格", null, 0, 1);

// LogUtil.e("mvpPresenter","mvpPresenter执行了");

}

});

}

@Override

public void showError(String msg) {

Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show();

}

@Override

public void showResult(String msg) {

text.setText(msg);

}

}

由于使用了retrofit+rxjava进行获取，暂时并未使用model,而是直接通过apiService进行获取Observable 后进行数据请求和回调处理；

github地址：https://github.com/cruiseliang/MvpSample