Android MVP架构的封装，解决接口过多，内存泄漏

一、思路：

• 1.接口过多—通过把Presenter,Model,View抽取出抽象类BasePresenter，BaseModel，BaseView，并通过使用泛型
• 2.View的内存泄漏—通过使弱引用，在View销毁的时候，手动GC,让系统回收内存

二、核心代码实现

• 1.BasePresenter

package com.example.basemvp.base;

import android.util.Log;

import java.lang.ref.WeakReference;

public abstract class BasePresenter<V extends BaseView, M extends BaseModel, C> {
    private static final String TAG = "BasePresenter";
    protected WeakReference<V> weakReference;
    protected M model;

    protected abstract M getModel();

    protected abstract C getContract();

    public BasePresenter() {
        model = getModel();
    }

    protected V getView() {
        if (weakReference != null) {
            return weakReference.get();
        }
        return null;

    }

    public void bindView(V view) {
        //使用弱应用
        weakReference = new WeakReference<>(view);
        Log.e(TAG, "bindView: " + weakReference);

    }

    //手动gc 让系统回收，以免内存泄漏
    public void unBindView() {
        Log.e(TAG, "unBindView: ");
        if (weakReference != null) {
            weakReference.clear();
            weakReference = null;
        }
        System.gc();
    }


}

• 2.BaseModel

package com.example.basemvp.base;

public abstract class BaseModel<P extends BasePresenter, C> {

    protected abstract C getContract();

    protected P presenter;

    public BaseModel(P presenter) {
        this.presenter = presenter;
    }

}

• 3.BaseView

package com.example.basemvp.base;


import android.os.Bundle;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;

public abstract class BaseView<P extends BasePresenter, C> extends AppCompatActivity {
    protected P presenter;

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        init();
        presenter = getPresenter();
        presenter.bindView(this);
    }

    protected abstract void init();


    protected abstract C getContract();

    protected abstract P getPresenter();

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

• 4.LoginContract

package com.example.basemvp.login.loginContract;

public interface LoginContract {
    interface Model {
        void execueLogin(String username, String pwd);
    }

    interface Presenter<T> {
        void requestLogin(String username, String pwd);

        void responesLogin(T data);

    }

    interface View<T> {
        void handeLogin(T data);
    }

}

三、代码传送门

https://gitee.com/daxiaa/MvpTest