android之MVP笔记入门

谈起MVP，有点惭愧，还是等到面试的时候被人问到才去做了解，自己阅读了网上的一部分MVP文档，感觉每个人都是按照自己的理解方式来写自己的博客，自己也写个自己的心得体会。

网上的图一大堆，这里就截取一个给大家看。

大神鸿杨的总结就是：Model与View之间的交互由Presenter完成。还有一点就是Presenter与View之间的交互是通过接口的（代码中会体现)。

谈起例子也是各有不同。

下面是我的例子，首先给大家看一下结构：

对应的类如下：

TestPresentBean

public class TestPresentBean {
    public String name;
    public String password;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}

ITestPresentView

public interface ITestPresentView {

    void findView();
    void showLoading();
    void dismissLoading();
    void showUserInfo(TestPresentBean bean);

}

TestPresentModel

public class TestPresentModel {
    public void loadData(final String name, final String pass, final ListenCallBack listenCallBack){
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    Thread.sleep(3000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                TestPresentBean bean = new TestPresentBean();
                bean.setName(name);
                bean.setPassword(pass);
                listenCallBack.loadSuccess(bean);
            }
        }).start();
    }

}

TestPresenter

public class TestPresenter {

    Handler mHandler = new Handler();

    ITestPresentView iTestPresentView;
    TestPresentModel testPresentbiz;

    public TestPresenter(ITestPresentView iTestPresentView) {
        this.iTestPresentView = iTestPresentView;
        testPresentbiz = new TestPresentModel();
    }

    public void loadData(){
        iTestPresentView.showLoading();
        testPresentbiz.loadData("张三", "123", new ListenCallBack() {
            @Override
            public void loadSuccess(final TestPresentBean testPresentBean) {
                //需要在UI线程执行
                mHandler.post(new Runnable() {
                    @Override
                    public void run() {
                        iTestPresentView.showUserInfo(testPresentBean);
                        iTestPresentView.dismissLoading();
                    }
                });

            }

            @Override
            public void loadFailed() {
                //需要在UI线程执行
                mHandler.post(new Runnable() {
                    @Override
                    public void run() {
                        iTestPresentView.dismissLoading();
                    }
                });
            }
        });
    }

}

TestPresentActivity

public class TestPresentActivity extends AppCompatActivity implements ITestPresentView {

    TestPresenter presenter;
    TextView mTestView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_present);
        presenter = new TestPresenter(this);
        initView();
        initData();
    }
    private void initView() {
        mTestView = (TextView) findViewById(R.id.txt_show);
    }

    private void initData() {
        TestPresenter presenter = new TestPresenter(this);
        presenter.loadData();
    }

    @Override
    public void findView() {

    }

    @Override
    public void showLoading() {
        Toast.makeText(this, "正在加载", Toast.LENGTH_LONG).show();
    }

    @Override
    public void dismissLoading() {
        Toast.makeText(this, "加载完成", Toast.LENGTH_LONG).show();
    }

    @Override
    public void showUserInfo(TestPresentBean bean) {
        mTestView.setText(bean.getName()+":"+bean.getPassword());
    }


}

每个人有自己的用法，希望这些跟您自己的代码作对比，写出更规范的MVP模式。

这里给大家提供一些参考网站：

http://www.jianshu.com/p/14283d8d3a60

http://www.jianshu.com/p/9a6845b26856

http://blog.csdn.net/lmj623565791/article/details/46596109

http://blog.csdn.net/hanchendong/article/details/61919599