【总结】Android Fragment MVC思路

Android 中 Activity

显示界面可以由几个Fragment拼成的

每个Fragment都有自己的布局和处理布局的逻辑。

使用了Fragment将视图分拆成模板然后处理逻辑就好像

在Activity这个蓝图上拼接板块一样。因为Fragment还可以在其他界面重用。感觉满满的View解耦。

下面给出一种辅助Fragment处理逻辑的模式方法。看上去遵循了MVC的思想。

 

Presenter（C）——Fragment（V）

public abstract classBaseFragment<Textends Presenter<U>,U extends Ui> extends Fragment {

    private Tpresenter;

    public abstract T createPresenter();

    public abstract U getUi();

    protected BaseFragment() {
        presenter =createPresenter();
    }

    public TgetPresenter() {
        return presenter;
    }

    @Override
    public void onCreate(BundlesavedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    public void onAttach(Contextcontext) {
        super.onAttach(context);
    }

    @Override
    public void onActivityCreated(BundlesavedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        presenter.onUiReady(getUi());
    }

    @Override
    public void onDestroyView() {
        super.onDestroyView();
        presenter.onUiDestroy(getUi());
    }

    @Override
    public void onSaveInstanceState(BundleoutState) {
        super.onSaveInstanceState(outState);
    }

}

 

UI接口 没有方法。仅仅起令牌的作用

public interfaceUi {
}

 

Presenter

public abstract class Presenter<U extends Ui> {    private U mUi;    public void onUiReady(U ui) {        mUi = ui;    }    public final void onUiDestroy(U ui) {        onUIUnready(ui);        mUi = null;    }    public void onUIUnready(U ui) {    }    public U getUi() {        return mUi;    }}

 

抽象出基础类放到UIBase包内

 

使用

public class ChatSessionFragment extends BaseFragment<ChatSessionPresenter, ChatSessionPresenter.ChatSessionUi> implements ChatSessionPresenter.ChatSessionUi {

@Overridepublic ChatSessionPresenter createPresenter() {    return new ChatSessionPresenter();}@Overridepublic ChatSessionPresenter.ChatSessionUi getUi() {    return this;}

}

 

 

public class ChatSessionPresenter extends Presenter<ChatSessionPresenter.ChatSessionUi>{

@Overridepublic void onUiReady(ChatSessionUi ui) {    super.onUiReady(ui);    AppApplication.getInstance().getmMessageBroadcastReceiver().addMessageNotiferListener(this);}@Overridepublic void onUIUnready(ChatSessionUi ui) {    super.onUIUnready(ui);}public interface ChatSessionUi extends Ui {    Context getContexts();    void refreshSessionList(List<Session> list);}

}