MVP+Rxjava+Okhttp+Retrofit+XRecyclerview请求数据
效果展示如下：
//导入的依赖如下，记得在manifest中加权限：
// xrecyclerview的依赖
compile 'com.jcodecraeer:xrecyclerview:1.3.2'
// fresco
compile 'com.facebook.fresco:fresco:0.12.0'
// Retrofit库
compile 'com.squareup.retrofit2:retrofit:2.0.1'
// Okhttp库
compile 'com.squareup.okhttp3:okhttp:3.1.2'
// rxjava+rxandroid+retrofit2+okhttp
compile 'io.reactivex:rxjava:1.0.14'
compile 'io.reactivex:rxandroid:1.0.1'
compile 'com.squareup.retrofit2:converter-gson:2.0.1'
compile 'com.squareup.retrofit2:adapter-rxjava:2.0.1'
compile 'com.squareup.okhttp3:logging-interceptor:3.4.1'
//布局如下：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main"
android:layout_width="match_parent" android:layout_height="match_parent"
>
<com.jcodecraeer.xrecyclerview.XRecyclerView
android:id="@+id/xr"
android:layout_width="match_parent"
android:layout_height="wrap_content"></com.jcodecraeer.xrecyclerview.XRecyclerView>
</RelativeLayout>
//item的布局：<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:fresco="http://schemas.android.com/apk/res-auto"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<com.facebook.drawee.view.SimpleDraweeView
android:id="@+id/recy_item_img"
android:layout_width="100dp"
android:layout_height="100dp"
fresco:placeholderImage="@mipmap/ic_launcher" />
<TextView
android:id="@+id/recy_item_tv"
android:layout_width="wrap_content"
android:textSize="25sp"
android:layout_marginTop="20dp"
android:textColor="@color/colorAccent"
android:layout_height="wrap_content"
android:text="标题" />
</LinearLayout>
//定义一个Api：
public class API {
//http://api.expoon.com/AppNews/getNewsList/type/1/p/1
public static final String URL = "http://api.expoon.com";
}
//定义一个接口ApiService：public interface ApiService {
@GET("/AppNews/getNewsList/type/1/p/1")
Observable<NewsBean> getData();
}
//定义一个app：
public class App extends Application {
@Override
public void onCreate() {
super.onCreate();
Fresco.initialize(this);
}
}
//这里Bean就不写了，接口可以另换
//定义一个Imodel接口：
public interface IMOdel {
// 处理数据的方法
void GetData();
}
//定义一个UserModel类实现接口
public class UserModel implements IMOdel{
// 创建集合 保存请求下来的数据
ArrayList<NewsBean.DataBean> lists;
private OnFinish onFinish;
public UserModel(OnFinish onFinish) {
this.onFinish = onFinish;
}
// 创建接口
public interface OnFinish{
void onFinishLinisher(ArrayList<NewsBean.DataBean> lists);
}
@Override
public void GetData() {
lists = new ArrayList<>();
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(API.URL)
.addCallAdapterFactory(RxJavaCallAdapterFactory.create())
.addConverterFactory(GsonConverterFactory.create())
.build();
// 通过动态代理获得网络接口数据
ApiService apiService = retrofit.create(ApiService.class);
Observable<NewsBean> data = apiService.getData();
// 设置请求数据时候的线程
data.subscribeOn(Schedulers.io())
// 设置请求结束后的线程
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Observer<NewsBean>() {
@Override
public void onCompleted() {
}
@Override
public void onError(Throwable e) {
}
@Override
public void onNext(NewsBean newsBean) {
Log.d("main2", "onNext: " + newsBean.getData() + "----");
lists = (ArrayList<NewsBean.DataBean>) newsBean.getData();
onFinish.onFinishLinisher(lists);
}
});
}
}
//定义一个p类进行v和m的交互
public class UserPresenter implements UserModel.OnFinish{
private final Iview iview;
private final UserModel userModel;
public UserPresenter(Iview iview) {
this.iview = iview;
userModel = new UserModel(this);
}
// 处理model与view的逻辑
public void getData(){
userModel.GetData();
}
@Override
public void onFinishLinisher(ArrayList<NewsBean.DataBean> lists) {
iview.ShowData(lists);
}
}
//定义一个Iview的接口:
public interface Iview {
// 展示数据的方法
void ShowData(ArrayList<NewsBean.DataBean> lists);
}
//定义一个adapter，将数据和图片优化，用recyclerview展示：
public class MyXrecyclerviewAdapter extends RecyclerView.Adapter<MyXrecyclerviewAdapter.MyViewHolder> {
// 数据源
ArrayList<NewsBean.DataBean> lists;
// 上下文
Context context;
public MyXrecyclerviewAdapter(ArrayList<NewsBean.DataBean> lists, Context context) {
this.lists = lists;
this.context = context;
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType)
{
MyViewHolder holder = new MyViewHolder(LayoutInflater.from(context).inflate(R.layout.recy_item, parent,
false));
return holder;
}
@Override
public void onBindViewHolder(MyViewHolder holder, int position)
{
holder.tv.setText(lists.get(position).getNews_title());
Uri uri = Uri.parse(lists.get(position).getPic_url());
holder.img.setImageURI(uri);
}
@Override
public int getItemCount()
{
return lists.size();
}
class MyViewHolder extends RecyclerView.ViewHolder
{
TextView tv;
SimpleDraweeView img;
public MyViewHolder(View view)
{
super(view);
tv = view.findViewById(R.id.recy_item_tv);
img = view.findViewById(R.id.recy_item_img);
}
}
}
//最后，在mainActivity实现代码：
public class MainActivity extends AppCompatActivity implements Iview{
XRecyclerView xr;
UserPresenter presenter;
MyXrecyclerviewAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 初始化
init();
}
private void init() {
xr = (XRecyclerView) findViewById(R.id.xr);
// 初始化数据
initData();
// 上拉刷新 下拉加载
xr.setLoadingMoreEnabled(true);
xr.setPullRefreshEnabled(true);
// 监听事件就不做了 具体需求自定义即可
xr.setLoadingListener(new XRecyclerView.LoadingListener() {
@Override
public void onRefresh() {
xr.refreshComplete();
Toast.makeText(MainActivity.this,"下拉刷新",Toast.LENGTH_SHORT).show();
}
@Override
public void onLoadMore() {
xr.loadMoreComplete();
Toast.makeText(MainActivity.this,"上拉加载",Toast.LENGTH_SHORT).show();
}
});
}
private void initData() {
presenter = new UserPresenter((Iview) this);
presenter.getData();
}
@Override
public void ShowData(ArrayList<NewsBean.DataBean> lists) {
xr.setLayoutManager(new LinearLayoutManager(this));
xr.setAdapter(adapter = new MyXrecyclerviewAdapter(lists,this));
}
}
--------------------- 本文来自 花痴与潇洒 的CSDN 博客 ，全文地址请点击：https://blog.csdn.net/qq_39712239/article/details/78499412?utm_source=copy
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