首先导入build.gradle中需要用到的依赖
implementation ‘com.google.code.gson:gson:2.8.5’
compile ‘com.android.support:recyclerview-v7:27.1.1’
compile ‘com.squareup.okhttp3:okhttp:3.9.0’
在AndroidManifest.xml中添加网络权限以及工具类的属性name
application下的android:name=".application.MyApplication" 首先看看所有的分包，MVP搭建 效果图
接下来就是布局文件main_actvity.xml中一个RecyclerView展示列表的控件
<android.support.v7.widget.RecyclerView
android:id="@+id/rv_news"
android:layout_width=“match_parent”
android:layout_height=“match_parent”></android.support.v7.widget.RecyclerView>
适配器中一个Imagview和两个textview控件
<?xml version="1.0" encoding="utf-8"?>
首先建一个news类为网络请求的数据
package com.example.newweek301.bean;
import java.util.List;
/**
- Created by 迁就 on 2018/11/17.
*/
public class News {
/**
* msg : 成功的返回
* code : 1
* data : [{"uniquekey":"1326bf3c4505783d4a964f81b6220e9d","title":"美国被特朗普坑惨了！又有3个铁杆盟友公开唱对台戏！","date":"2018-05-12 07:25","category":"头条","author_name":"大国军情","url":"http://mini.eastday.com/mobile/180512072544020.html","thumbnail_pic_s":"http://04.imgmini.eastday.com/mobile/20180512/20180512_fe1bf1b6ec00098f9455c84dc81e6763_cover_mwpm_03200403.jpg","thumbnail_pic_s02":"http://04.imgmini.eastday.com/mobile/20180512/20180512_3f636fca330f2311583896aed3185196_cover_mwpm_03200403.jpg","thumbnail_pic_s03":"http://04.imgmini.eastday.com/mobile/20180512/20180512_793fab03dadcd417bf2d8e5e1e48a0f5_cover_mwpm_03200403.jpg"},{"uniquekey":"9db153b507c10bbbed1d26c29c030eef","title":"第71届戛纳电影节：贾樟柯电影《江湖儿女》首映","date":"2018-05-12 07:25","category":"头条","author_name":"新华网","url":"http://mini.eastday.com/mobile/180512072505095.html","thumbnail_pic_s":"http://01.imgmini.eastday.com/mobile/20180512/20180512072505_0fe08f494e7c090764244e3581b3e5ca_5_mwpm_03200403.jpg","thumbnail_pic_s02":"http://01.imgmini.eastday.com/mobile/20180512/20180512072505_0fe08f494e7c090764244e3581b3e5ca_1_mwpm_03200403.jpg","thumbnail_pic_s03":"http://01.imgmini.eastday.com/mobile/20180512/20180512072505_0fe08f494e7c090764244e3581b3e5ca_3_mwpm_03200403.jpg"},{"uniquekey":"4f47eb31b188cfa90881260bb2b11aa8","title":"以色列发射60枚火箭弹对伊朗进行报复，中东小霸王称号保不住了","date":"2018-05-12 07:24","category":"头条","author_name":"遇见优佳","url":"http://mini.eastday.com/mobile/180512072412903.html","thumbnail_pic_s":"http://06.imgmini.eastday.com/mobile/20180512/20180512_38f5183808987be3783b180740d12a2a_cover_mwpm_03200403.jpg","thumbnail_pic_s02":"http://06.imgmini.eastday.com/mobile/20180512/20180512_a3d9f98eb0e3fe36574581f00fa0f898_cover_mwpm_03200403.jpg","thumbnail_pic_s03":"http://06.imgmini.eastday.com/mobile/20180512/20180512_37fa1339af2e64cfd2dc85191950e8ba_cover_mwpm_03200403.jpg"},{"uniquekey":"a3ef77503b9924d7ad6957a5af5da5d1","title":"苏丹驻华大使送别招待会在公共外交文化交流中心举行","date":"2018-05-12 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07:17","category":"头条","author_name":"中国新闻网","url":"http://mini.eastday.com/mobile/180512071745564.html","thumbnail_pic_s":"http://00.imgmini.eastday.com/mobile/20180512/20180512071745_6accdc1c2a1356851f0bf51247a8f256_9_mwpm_03200403.jpg","thumbnail_pic_s02":"http://00.imgmini.eastday.com/mobile/20180512/20180512071745_6accdc1c2a1356851f0bf51247a8f256_8_mwpm_03200403.jpg","thumbnail_pic_s03":"http://00.imgmini.eastday.com/mobile/20180512/20180512071745_6accdc1c2a1356851f0bf51247a8f256_4_mwpm_03200403.jpg"},{"uniquekey":"fc91bd75121e2e84a6cb3d239ddb9846","title":"太反常！特朗普声称退出伊核协议以来，伊朗的表现让美军不适应","date":"2018-05-12 07:15","category":"头条","author_name":"阿尔法军事","url":"http://mini.eastday.com/mobile/180512071539046.html","thumbnail_pic_s":"http://01.imgmini.eastday.com/mobile/20180512/20180512_85e54ca8649794d2c3fdf06faf04fa87_cover_mwpm_03200403.jpg","thumbnail_pic_s02":"http://01.imgmini.eastday.com/mobile/20180512/20180512_e8df98afa3707e436d1793e66d5bc063_cover_mwpm_03200403.jpg","thumbnail_pic_s03":"http://01.imgmini.eastday.com/mobile/20180512/20180512_a1d1e3735f424eba66244a7842b2f7bf_cover_mwpm_03200403.jpg"},{"uniquekey":"ebed0b6a189873fa375a47ee8463c9be","title":"沪正在全面消除无证餐饮店铺 \u201c共享餐厅\u201d最快6月运营","date":"2018-05-12 07:13","category":"头条","author_name":"东方网","url":"http://mini.eastday.com/mobile/180512071324017.html","thumbnail_pic_s":"http://06.imgmini.eastday.com/mobile/20180512/20180512071324_ae237ccc4fcee20ec4909588b5b7609f_1_mwpm_03200403.jpg"},{"uniquekey":"8a88eb5466a46cf6d975579ccb658e29","title":"特朗普嘲讽奥巴马：他花18亿救人，我让朝鲜免费放人","date":"2018-05-12 07:09","category":"头条","author_name":"解放网","url":"http://mini.eastday.com/mobile/180512070940666.html","thumbnail_pic_s":"http://05.imgmini.eastday.com/mobile/20180512/20180512070940_3108dd32b82c16f350b949340f95a647_1_mwpm_03200403.jpg"},{"uniquekey":"6113c546a13e9292ced28b0199a23108","title":"身在国外，这五点我必须说清楚！","date":"2018-05-12 07:03","category":"头条","author_name":"新华网","url":"http://mini.eastday.com/mobile/180512070344831.html","thumbnail_pic_s":"http://02.imgmini.eastday.com/mobile/20180512/20180512070344_7f0366d60dea69d79c1f0432600b5f20_4_mwpm_03200403.jpg","thumbnail_pic_s02":"http://02.imgmini.eastday.com/mobile/20180512/20180512070344_7f0366d60dea69d79c1f0432600b5f20_2_mwpm_03200403.jpg","thumbnail_pic_s03":"http://02.imgmini.eastday.com/mobile/20180512/20180512070344_7f0366d60dea69d79c1f0432600b5f20_3_mwpm_03200403.jpg"},{"uniquekey":"ca9d43ed0e6875692164bea6cc898065","title":"再\u201c读\u201d汶川｜究竟是一种什么样的力量，让中国人如此勇敢地面对可怕的灾难？","date":"2018-05-12 06:59","category":"头条","author_name":"解放网","url":"http://mini.eastday.com/mobile/180512065922743.html","thumbnail_pic_s":"http://03.imgmini.eastday.com/mobile/20180512/20180512065922_e367e5443f66512176376bd05ed65f9a_1_mwpm_03200403.jpg"},{"uniquekey":"da0a52bc92c10e81d16a4e728701cffc","title":"十年对比：通往汶川的唯一通道十年之变","date":"2018-05-12 06:50","category":"头条","author_name":"中国网","url":"http://mini.eastday.com/mobile/180512065018882.html","thumbnail_pic_s":"http://03.imgmini.eastday.com/mobile/20180512/20180512065018_01abef975bd32ccc728ac4e4e6a7ec6e_2_mwpm_03200403.jpg","thumbnail_pic_s02":"http://03.imgmini.eastday.com/mobile/20180512/20180512065018_9cfcb8c2869e997daf379bb7ce19180e_6_mwpm_03200403.jpg","thumbnail_pic_s03":"http://03.imgmini.eastday.com/mobile/20180512/20180512065018_0b79422343a8c1c37ec8121cd0c7a11c_5_mwpm_03200403.jpg"},{"uniquekey":"fa498034a3f9cd9fa2f5e0a2fbfd4da4","title":"全国第一！上海的马路边，应该容得下更多街头艺人","date":"2018-05-12 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*/
private String msg;
private int code;
private List<DataBean> data;
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
public int getCode() {
return code;
}
public void setCode(int code) {
this.code = code;
}
public List<DataBean> getData() {
return data;
}
public void setData(List<DataBean> data) {
this.data = data;
}
public static class DataBean {
/**
* uniquekey : 1326bf3c4505783d4a964f81b6220e9d
* title : 美国被特朗普坑惨了！又有3个铁杆盟友公开唱对台戏！
* date : 2018-05-12 07:25
* category : 头条
* author_name : 大国军情
* url : http://mini.eastday.com/mobile/180512072544020.html
* thumbnail_pic_s : http://04.imgmini.eastday.com/mobile/20180512/20180512_fe1bf1b6ec00098f9455c84dc81e6763_cover_mwpm_03200403.jpg
* thumbnail_pic_s02 : http://04.imgmini.eastday.com/mobile/20180512/20180512_3f636fca330f2311583896aed3185196_cover_mwpm_03200403.jpg
* thumbnail_pic_s03 : http://04.imgmini.eastday.com/mobile/20180512/20180512_793fab03dadcd417bf2d8e5e1e48a0f5_cover_mwpm_03200403.jpg
*/
private String uniquekey;
private String title;
private String date;
private String category;
private String author_name;
private String url;
private String thumbnail_pic_s;
private String thumbnail_pic_s02;
private String thumbnail_pic_s03;
public String getUniquekey() {
return uniquekey;
}
public void setUniquekey(String uniquekey) {
this.uniquekey = uniquekey;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public String getCategory() {
return category;
}
public void setCategory(String category) {
this.category = category;
}
public String getAuthor_name() {
return author_name;
}
public void setAuthor_name(String author_name) {
this.author_name = author_name;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getThumbnail_pic_s() {
return thumbnail_pic_s;
}
public void setThumbnail_pic_s(String thumbnail_pic_s) {
this.thumbnail_pic_s = thumbnail_pic_s;
}
public String getThumbnail_pic_s02() {
return thumbnail_pic_s02;
}
public void setThumbnail_pic_s02(String thumbnail_pic_s02) {
this.thumbnail_pic_s02 = thumbnail_pic_s02;
}
public String getThumbnail_pic_s03() {
return thumbnail_pic_s03;
}
public void setThumbnail_pic_s03(String thumbnail_pic_s03) {
this.thumbnail_pic_s03 = thumbnail_pic_s03;
}
}
}
接下来就是MVP分包了
view层
public interface IRecyView {
void showRecy(List<News.DataBean> list);
}
model层两个
1：
public interface IRecyModel {
void recy(Callback callback);
}
2：
public class RecyModel implements IRecyModel{
@Override
public void recy(Callback callback) {//请求数据的网址
OkHttpUtils.getInStance().doGet("http://www.xieast.com/api/news/news.php",callback);
}
}
presenter层
public class RecyPresenter {
private IRecyView view;
private IRecyModel model;
public RecyPresenter(IRecyView view) {
this.view = view;
model = new RecyModel();
}
public void showRecy(){
model.recy(new OnUiCallback() {
private ArrayList<News.DataBean> dataBeans;
@Override
public void onFailed(Call call, IOException e) {
}
@Override
public void onSuccess(String result) throws IOException {
Log.i("ss",result);
Gson gson = new Gson();
News news = gson.fromJson(result, News.class);
dataBeans = (ArrayList<News.DataBean>) news.getData();
view.showRecy(this.dataBeans);
}
});
}
public void onDestory(){
view = null;
}
}
两个utils层
1：
public class OkHttpUtils {
private Handler handler = new Handler(Looper.getMainLooper());
public Handler getHandler(){
return handler;
}
//单例
private static OkHttpUtils okHttpUtils = new OkHttpUtils();
private OkHttpUtils(){};
public static OkHttpUtils getInStance(){
return okHttpUtils;
}
private OkHttpClient client;
private void initOkHttpClient(){
if (client == null){
client = new OkHttpClient.Builder().build();
}
}
//公用的get请求方法，完成的功能不确定
public void doGet(String url, Callback callback){
initOkHttpClient();
Request request = new Request.Builder().addHeader(“User-Agent”, “”).url(url).build();
Call call = client.newCall(request);
call.enqueue(callback);
}
}
2：
public abstract class OnUiCallback implements Callback{
private Handler handler = OkHttpUtils.getInStance().getHandler();
public abstract void onFailed(Call call, IOException e);
public abstract void onSuccess(String result) throws IOException;
@Override
public void onFailure(final Call call, final IOException e) {
handler.post(new Runnable() {
@Override
public void run() {
onFailed(call,e);
}
});
}
@Override
public void onResponse(final Call call, final Response response) throws IOException {
final String result = response.body().string();
//该方式 存在问题 网络请求也跑到了主线程 待解决
handler.post(new Runnable() {
@Override
public void run() {
try {
onSuccess(result);
} catch (IOException e) {
e.printStackTrace();
}
}
});
}
}
一个请求图片的工具类
public class MyApplication extends Application {
@Override
public void onCreate() {
super.onCreate();
ImageLoaderConfiguration configuration = new ImageLoaderConfiguration.Builder(this).build();
ImageLoader.getInstance().init(configuration);
}
}
适配器
public class RvAdapter extends RecyclerView.Adapter<RvAdapter.ViewHolder> {
private Context context;
private List<News.DataBean> list;
public RvAdapter(Context context, List<News.DataBean> list) {
this.context = context;
this.list = list;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View inflate = View.inflate(context, R.layout.rv_news, null);
ViewHolder holder = new ViewHolder(inflate);
return holder;
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.txtTitle.setText(list.get(position).getTitle());
holder.txtTitme.setText(list.get(position).getDate());
ImageLoader.getInstance().displayImage(list.get(position).getThumbnail_pic_s(),holder.imgLogo);
}
@Override
public int getItemCount() {
return list.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
private final ImageView imgLogo;
private final TextView txtTitle;
private final TextView txtTitme;
public ViewHolder(View itemView) {
super(itemView);
imgLogo = itemView.findViewById(R.id.img_logo);
txtTitle = itemView.findViewById(R.id.txt_title);
txtTitme = itemView.findViewById(R.id.txt_time);
}
}
}
最后的MainActvity
public class MainActivity extends Activity implements IRecyView {
private RecyclerView rvNews;
private RecyPresenter presenter;
private List<News.DataBean> list;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
presenter = new RecyPresenter(this);
presenter.showRecy();
list = new ArrayList<>();
}
private void initView() {
rvNews = findViewById(R.id.rv_news)；
LinearLayoutManager manager = new LinearLayoutManager(this);
manager.setOrientation(LinearLayoutManager.VERTICAL);
rvNews.setLayoutManager(manager);
}
@Override
public void showRecy(List<News.DataBean> list) {
//加载更多的方法
RvAdapter adapter = new RvAdapter(this,list);
rvNews.setAdapter(adapter);
}
}