Android MVP 架构一 View与Presenter _Android

少年意气强不羁，虎胁插翼白日飞。这篇文章主要讲述Android MVP 架构一 View与Presenter相关的知识，希望能为你提供帮助。
View：主要负责界面的显示及跟数据无关的逻辑，比如设置控件的点击事件等
Presenter:主要负责View与Model的交互
Model:数据部分
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MVP的核心是：
View层不持有Model层对象任何引用，当然参数里面和临时变量里可以有Model层对象，只持有Presenter层对象引用，任何需要更新或者操作数据的，都间接通过Presenter对象去操作数据。而Model层想要操作View层是无法实现的，必须通过Presenter层。
Presenter层持有View层对象的引用，除此之外不持有其他的UI控件等的引用，Model层会把想要更新View的操作委托Presenter去操作，而Presenter层会把更新View操作交给View层对象去操作。
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1、view 层，实现：

public class GoodsActivity extends Activity implements ViewPager.OnPageChangeListener, OnPageClickListener, ShoppingMarkContentView {

2、ShoppingMarkContentView ：

package com.wbh.mall.views.iviews; import com.wbh.mall.restful.bean.GoodDTO; import com.wbh.mall.restful.bean.UserDataListDTO; import java.util.List; public abstract interface ShoppingMarkContentView { public abstract void refershRecommendItemList(List< GoodDTO> paramList); public abstract void refreshCollectSameMarkUserInfo(UserDataListDTO paramUserDataListDTO); public abstract void refreshItemDetail(GoodDTO paramGoodDTO); public abstract void setFollow(short paramShort); }

3、在GoodsActivity 中实现上面的方法：

@Override @SuppressLint({"MissingSuperCall"}) protected void onResume() { super.onResume(); this.markContentPresenter.start(); }@Override public void refershRecommendItemList(List< GoodDTO> paramList) { runOnUiThread(new Runnable() { @Override public void run() { if ((paramList != null) & & (!paramList.isEmpty())) { GoodsActivity.this.recommend_good_container.setVisibility(0); GoodsActivity.this.recommendGoodListAdapter.goodDTOS.addAll(paramList); GoodsActivity.this.recommend_good_list_recyclerview.notifyFinish(); } } }); }

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其实在他上面有个入口：

@Override public void onCreate(Bundle savedInstanceState) { this.markContentPresenter.tuijianGoods(false);

public void tuijianGoods(boolean b) {if (!b) { this.manager.current_page = 1; this.lastUpDate = DateUtil.getCurrentTime(); }int j = this.manager.page_num; int i = this.manager.current_page; long l = this.lastUpDate; String str = this.articleId; if (TextUtils.isEmpty(this.itemUrl) == true) {} StringBuilder sb = new StringBuilder(); sb.append(this.num_iid); sb.append(""); markSource.tuiJianGoods(j, i, l, str, sb.toString()); }

在 public class ShoppingMarkContentPresenter extends Presenter {中定义上面的方法；
4、请求服务器：

public class MarkRestSource extends RestSource {

public void tuiJianGoods(int paramInt1, int paramInt2, long paramLong, String paramString1, String paramString2) { Map localMap = createPhoneInfoMap(); localMap.put("pageSize", Integer.valueOf(paramInt1)); localMap.put("pageNo", Integer.valueOf(paramInt2)); localMap.put("lastUpDate", Long.valueOf(paramLong)); if (!TextUtils.isEmpty(paramString1)) { localMap.put("articleId", paramString1); } if (!TextUtils.isEmpty(paramString2)) { localMap.put("num_iid", paramString2); } cleanNullParams(localMap); this.markApi.tuiJianGoods(localMap).enqueue(new Callback() {@Override public void onResponse(Call call, Response response) { int i = response.code(); if (i == 200) { MarkRestSource.this.storeToken(((MarkRestResponse.TuijianGoodsResponse) response.body()).token); MarkRestSource.this.dataBus.post(response.body()); } else { MarkRestSource.this.dataBus.post(new MarkRestResponse.TuijianGoodsResponse(Integer.valueOf(i))); } }@Override public void onFailure(Call call, Throwable throwable) { MarkRestSource.this.dataBus.post(new MarkRestResponse.TuijianGoodsResponse(Integer.valueOf(2000))); }}); }

BUS 事件传递

/** * 订阅事件 EventBus @Subscribe * * @return Result< Xxxx> */ @Subscribe public void tuijianGoodsResponse(MarkRestResponse.TuijianGoodsResponse paramTuijianGoodsResponse) { try { if ((paramTuijianGoodsResponse.code == 200) & & (paramTuijianGoodsResponse.data != null) & & paramTuijianGoodsResponse.data.list != null) { this.lastUpDate = paramTuijianGoodsResponse.data.lastUpDate; PageManager localPageManager = this.manager; boolean isLastPage; if (paramTuijianGoodsResponse.data.isLastPage == 0) { isLastPage = false; } else { isLastPage = true; } localPageManager.isLastPage = isLastPage; this.markContentView.refershRecommendItemList(paramTuijianGoodsResponse.data.list); if (TextUtils.isEmpty(this.itemUrl)) { storeMarkrRecords(paramTuijianGoodsResponse.data.list); } } else { this.markContentView.refershRecommendItemList(null); } } catch (Exception ex) { ex.printStackTrace(); } }

【Android MVP 架构一 View与Presenter】