MVP结合(RecycleView,Retorfit,GreenDao和EventBus)数据展示
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MVP结合(RecycleView,Retorfit,GreenDao和EventBus)数据展示
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代碼使用的依賴：
compile'org.greenrobot:greendao:3.0.1'compile'org.greenrobot:greendao-generator:3.0.0'compile 'com.jakewharton:butterknife:7.0.0'compile 'org.greenrobot:eventbus:3.1.1'compile 'com.facebook.fresco:fresco:0.14.1'compile 'com.squareup.okhttp3:mockwebserver:3.9.0'compile 'com.android.support:recyclerview-v7:26.0.0-alpha1'compile 'com.squareup.retrofit2:retrofit:2.0.0-beta4'compile 'com.squareup.retrofit2:converter-gson:2.0.0-beta4'
activity_main
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context="com.example.muhanxi.myapplication.MainActivity"><android.support.v7.widget.RecyclerViewandroid:layout_width="match_parent"android:layout_height="match_parent"android:id="@+id/recycleview"/></LinearLayout>
activity_main2:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context="com.example.muhanxi.myapplication.Main2Activity"></LinearLayout>
主要代碼：
MainActivity:
package com.example.muhanxi.myapplication;import android.app.Activity; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView;import com.example.muhanxi.myapplication.adapter.IApdater; import com.example.muhanxi.myapplication.presenter.MainPresenter; import com.example.muhanxi.myapplication.view.IMainView;import java.util.List;import butterknife.BindView; import butterknife.ButterKnife;public class MainActivity extends Activity implements IMainView {@BindView(R.id.recycleview)RecyclerView recycleview;private MainPresenter presenter;private IApdater adapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);ButterKnife.bind(this);presenter = new MainPresenter(this);presenter.get();LinearLayoutManager manager = new LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false);adapter = new IApdater(this);recycleview.setLayoutManager(manager);recycleview.setAdapter(adapter);List<ListBean> listBeans = IApplication.session.getListBeanDao().loadAll();for(ListBean bean : listBeans){System.out.println(bean.toString());}}@Overridepublic void onSuccess(Bean bean) {adapter.addData(bean);}@Overridepublic void onFailure(Exception e) {} }
初始化IApplication類：
package com.example.muhanxi.myapplication;import android.app.Application;import com.example.muhanxi.myapplication.dao.DaoMaster; import com.example.muhanxi.myapplication.dao.DaoSession; import com.facebook.drawee.backends.pipeline.Fresco;import org.greenrobot.greendao.database.Database;import retrofit2.Retrofit; import retrofit2.converter.gson.GsonConverterFactory;/*** Created by muhanxi on 17/12/1.*/public class IApplication extends Application {public static IGetDataBase iGetDataBase;public static DaoSession session;@Overridepublic void onCreate() {super.onCreate();Fresco.initialize(this);Retrofit retrofit = new Retrofit.Builder().baseUrl("http://v.juhe.cn").addConverterFactory(GsonConverterFactory.create()).build();iGetDataBase = retrofit.create(IGetDataBase.class);DaoMaster.DevOpenHelper helper = new DaoMaster.DevOpenHelper(this,"test");Database database = helper.getWritableDb();session = new DaoMaster(database).newSession();} }
Main2Activity：
生成接口從其中獲得get和post請求：
IGetDataBase:
package com.example.muhanxi.myapplication;import okhttp3.ResponseBody; import retrofit2.Call; import retrofit2.http.Field; import retrofit2.http.FormUrlEncoded; import retrofit2.http.GET; import retrofit2.http.POST; import retrofit2.http.Query;/*** Created by muhanxi on 17/12/1.*/public interface IGetDataBase {/*** get 請求* @param key* @return*/@GET("/weixin/query")Call<Bean> get(@Query("key") String key);/*** post 請求* @param key* @return*/@FormUrlEncoded@POST("/weixin/query")Call<Bean> post(@Field("key") String key);}EventBus設置Bean類：
EventBean:
package com.example.muhanxi.myapplication;/*** Created by muhanxi on 17/12/1.*/public class EventBean {public String url;public String title;public EventBean(String url, String title) {this.url = url;this.title = title;}public String getUrl() {return url;}public String getTitle() {return title;} }
Bean:
ListBean:
package com.example.muhanxi.myapplication;import org.greenrobot.greendao.annotation.Entity; import org.greenrobot.greendao.annotation.Id; import org.greenrobot.greendao.annotation.Generated;@Entity public class ListBean {/*** id : wechat_20171201008724* title : 威廉·德雷謝維奇《簡·奧斯丁的教導》：改變生活的藝術* source : 文藝報1949* firstImg : http://zxpic.gtimg.com/infonew/0/wechat_pics_-60604411.jpg/640* mark :* url : http://v.juhe.cn/weixin/redirect?wid=wechat_20171201008724*/@Id(autoincrement = true)private Long iid;private String id;private String title;private String source;private String firstImg;private String mark;private String url;@Generated(hash = 2061991154)public ListBean(Long iid, String id, String title, String source, String firstImg,String mark, String url) {this.iid = iid;this.id = id;this.title = title;this.source = source;this.firstImg = firstImg;this.mark = mark;this.url = url;}@Generated(hash = 777734033)public ListBean() {}public String getId() {return id;}public void setId(String id) {this.id = id;}public String getTitle() {return title;}public void setTitle(String title) {this.title = title;}public String getSource() {return source;}public void setSource(String source) {this.source = source;}public String getFirstImg() {return firstImg;}public void setFirstImg(String firstImg) {this.firstImg = firstImg;}public String getMark() {return mark;}public void setMark(String mark) {this.mark = mark;}public String getUrl() {return url;}public void setUrl(String url) {this.url = url;}public Long getIid() {return this.iid;}public void setIid(Long iid) {this.iid = iid;}@Overridepublic String toString() {return "ListBean{" +"iid=" + iid +", id='" + id + '\'' +", title='" + title + '\'' +", source='" + source + '\'' +", firstImg='" + firstImg + '\'' +", mark='" + mark + '\'' +", url='" + url + '\'' +'}';} }
放置獲取的數據的Bean類，其中ListBean用于生成GreenDao中dao包的三大類：其中有Bean類和ListBean:
其中ListBean的注意點：@Entity和@Id是必須要寫的：
MVP三層的使用：
M層的model包中的三個類：
MainModelImpl：
package com.example.muhanxi.myapplication.model;import com.example.muhanxi.myapplication.Bean; import com.example.muhanxi.myapplication.IApplication;import retrofit2.Call; import retrofit2.Callback; import retrofit2.Response;/*** Created by muhanxi on 17/12/1.*/public class MainModelImpl {/*** get 請求* @param callBack*/public void getData(final ModelCallBack callBack){Call<Bean> call = IApplication.iGetDataBase.get("88f7bbc507e3ecacfaeab2b47dd8936f");call.enqueue(new Callback<Bean>() {@Overridepublic void onResponse(Call<Bean> call, Response<Bean> response) {Bean bean = response.body();callBack.onSuccess(bean);// 保存到數據庫IApplication.session.getListBeanDao().insertInTx(bean.getResult().getList());}@Overridepublic void onFailure(Call<Bean> call, Throwable t) {callBack.onFailure(new Exception(""));}});}/*** post 請求*/public void postData(final ModelCallBack callBack){Call<Bean> call = IApplication.iGetDataBase.post("88f7bbc507e3ecacfaeab2b47dd8936f");call.enqueue(new Callback<Bean>() {@Overridepublic void onResponse(Call<Bean> call, Response<Bean> response) {Bean bean = response.body() ;callBack.onSuccess(bean);}@Overridepublic void onFailure(Call<Bean> call, Throwable t) {callBack.onFailure(new Exception(""));}});}}
package com.example.muhanxi.myapplication.model;import com.example.muhanxi.myapplication.Bean;/*** Created by muhanxi on 17/12/1.*/public interface ModelCallBack {public void onSuccess(Bean bean);public void onFailure(Exception e);}
MainModel：
package com.example.muhanxi.myapplication.model;/*** Created by muhanxi on 17/12/1.*/public interface MainModel { }
MAinView：
package com.example.muhanxi.myapplication.view;import com.example.muhanxi.myapplication.Bean;/*** Created by muhanxi on 17/12/1.*/public interface IMainView {public void onSuccess(Bean bean);public void onFailure(Exception e);}
MainPresenter：
package com.example.muhanxi.myapplication.presenter;import com.example.muhanxi.myapplication.Bean; import com.example.muhanxi.myapplication.model.MainModelImpl; import com.example.muhanxi.myapplication.model.ModelCallBack; import com.example.muhanxi.myapplication.view.IMainView;/*** Created by muhanxi on 17/12/1.*/public class MainPresenter {private IMainView iView ;private MainModelImpl mainModel ;public MainPresenter(IMainView view){this.iView = view;this.mainModel = new MainModelImpl();}public void get(){mainModel.getData(new ModelCallBack() {@Overridepublic void onSuccess(Bean bean) {if(iView != null){iView.onSuccess(bean);}}@Overridepublic void onFailure(Exception e) {if(iView != null){iView.onFailure(e);}}});}public void post(){mainModel.postData(new ModelCallBack() {@Overridepublic void onSuccess(Bean bean) {if(iView != null){iView.onSuccess(bean);}}@Overridepublic void onFailure(Exception e) {if(iView != null){iView.onFailure(e);}}});}}
GreenDao中生成的三個主要類：點擊軟件里的一個“ 錘子”類的按鈕就可以出來，dao類的使用在“http://blog.csdn.net/oaitan/article/details/51464743”
這是使用的過程：可以看看：
最后RecycleView的Adapter類的代碼：
IAdapter:
package com.example.muhanxi.myapplication.adapter;import android.content.Context; import android.content.Intent; import android.support.v7.widget.RecyclerView; import android.view.View; import android.view.ViewGroup; import android.widget.TextView;import com.example.muhanxi.myapplication.Bean; import com.example.muhanxi.myapplication.EventBean; import com.example.muhanxi.myapplication.ListBean; import com.example.muhanxi.myapplication.Main2Activity; import com.example.muhanxi.myapplication.R; import com.facebook.drawee.view.SimpleDraweeView;import org.greenrobot.eventbus.EventBus;import java.util.ArrayList; import java.util.List;import butterknife.BindView; import butterknife.ButterKnife;/*** Created by muhanxi on 17/12/1.*/public class IApdater extends RecyclerView.Adapter<IApdater.IViewHolder> {Context context;List<ListBean> list ;public IApdater(Context context) {this.context = context;}public void addData(Bean bean){if(list == null){list = new ArrayList<>();}list.addAll(bean.getResult().getList());notifyDataSetChanged();}@Overridepublic IApdater.IViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {View view = View.inflate(context, R.layout.layout, null);return new IViewHolder(view);}@Overridepublic void onBindViewHolder(IApdater.IViewHolder holder, final int position) {holder.adapterSimpledraweeview.setImageURI(list.get(position).getFirstImg());holder.adapterTextview.setText(list.get(position).getTitle());holder.adapterTextview.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {EventBus.getDefault().postSticky(new EventBean(list.get(position).getFirstImg(),list.get(position).getTitle()));context.startActivity(new Intent(context, Main2Activity.class));}});}@Overridepublic int getItemCount() {return list == null ? 0 : list.size();}static class IViewHolder extends RecyclerView.ViewHolder{@BindView(R.id.adapter_simpledraweeview)SimpleDraweeView adapterSimpledraweeview;@BindView(R.id.adapter_textview)TextView adapterTextview;IViewHolder(View view) {super(view);ButterKnife.bind(this, view);}} }
最后整個小Demo就結束了，可以簡單參考參考：
對了最后還有GreenDao的配置類：
效果如下：
配置一定不要忘了，否則就
出不來了
總結
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