MVP操作RecyclerView多条目SpringView,OKHttp封装请求网络

build.gradle导入依赖

apply plugin: 'com.android.application'

android {
compileSdkVersion 25
buildToolsVersion "25.0.1"

defaultConfig {
applicationId "com.example.lianxiday10_myp_recyclerview"
minSdkVersion 18
targetSdkVersion 25
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}

dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:25.+'
compile 'com.android.support:recyclerview-v7:25.3.1'

compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'
compile 'com.squareup.okhttp3:okhttp:3.9.0'
compile 'com.google.code.gson:gson:2.8.2'
compile 'com.liaoinstan.springview:library:1.3.0'
}

activity_main的布局

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
>

<com.liaoinstan.springview.widget.SpringView
android:id="@+id/spring_view"
android:layout_width="match_parent"
android:layout_height="match_parent">

<android.support.v7.widget.RecyclerView
android:id="@+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent">

</android.support.v7.widget.RecyclerView>
</com.liaoinstan.springview.widget.SpringView>
</RelativeLayout>MainActivity 实现
view层的接口,成功的回调方法里 去给适配器设置集合数据

public class MainActivity extends AppCompatActivity implements MutiViewCallBack{

private SpringView springView;
private RecyclerView recyclerView;
private MutiAdapter mutiAdapter;
private MutiPresenter mutiPresenter;

//mvp   展示recycleview  多条目 上拉下拉 使用okhttp封装请求数据
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

//获取id
springView = (SpringView) findViewById(R.id.spring_view);
recyclerView = (RecyclerView) findViewById(R.id.recycler_view);

//new适配器,将上下文传过去
mutiAdapter = new MutiAdapter(this);
//new出来presenter
mutiPresenter = new MutiPresenter(this);

//设置布局类型  false是正序
LinearLayoutManager manager = new LinearLayoutManager(MainActivity.this,LinearLayoutManager.VERTICAL,false);
//设置布局管理器
recyclerView.setLayoutManager(manager);
recyclerView.setAdapter(mutiAdapter);

//springview的设置
springView.setHeader(new DefaultHeader(this));
springView.setFooter(new DefaultFooter(this));

springView.setListener(new SpringView.OnFreshListener() {
@Override
public void onRefresh() {
//下拉刷新
mutiPresenter.onRefresh(true);
}

@Override
public void onLoadmore() {
//上拉加载
mutiPresenter.onRefresh(false);
}
});

//进入页面先访问数据
mutiPresenter.onRefresh(true);
}

//实现MutiViewCallBack
@Override
public void success(MutiBean mutibean) {
//这个回调是mutiview的 presenter请求到数据的成功回调
if(springView !=null){
//刷新完成的方法
springView.onFinishFreshAndLoad();
}
//进入页面给适配器传数据
mutiAdapter.addData(mutibean.getResult().getData());
}

@Override
public void failure(Exception e) {
Toast.makeText(this,"error",Toast.LENGTH_SHORT).show();
}
}

view层的接口

public interface MutiViewCallBack {

public void success(MutiBean mutibean);//这个方法接收到访问网络传回的数据
public void failure(Exception e);
}

presenter层,在调用model层访问数据

public class MutiPresenter {

MutiModel mutiModel = new MutiModel();

MutiViewCallBack mutiviewCallBack;
public MutiPresenter(MutiViewCallBack mutiviewCallBack) {
this.mutiviewCallBack = mutiviewCallBack;
}

//view层调用p这个方法 p层再去model层访问数据
public void onRefresh(boolean shuaxin){
mutiModel.Refresh(shuaxin, new MutiModel.ModelCallBack() {
@Override
public void modelsuccess(MutiBean bean) {
mutiviewCallBack.success(bean);
}

@Override
public void modelfailure(Exception e) {
mutiviewCallBack.failure(e);
}
});
}

}

model层里面调用okhttp封装类,访问网络数据,成功的回调中携带bean类,bean类型改成提前写好的bean类
public class MutiModel {

//model层里面访问网络数据,调用okhttp
public void Refresh(boolean shuaxin, final ModelCallBack modelCallBack) {
//这里面 使用okhttp 封装好的方法请求数据

//http://v.juhe.cn/toutiao/index?type=&key=fac0f16b2ab153b436517271e78408ad
//http://v.juhe.cn/toutiao/index?type=top&key=597b4f9dcb50e051fd725a9ec54d6653
OkhttpUtils.getInstance().asyn(null, "http://v.juhe.cn/toutiao/index?type=&key=fac0f16b2ab153b436517271e78408ad", new AbstractUiCallBack<MutiBean>() {
@Override
//封装好的okhttputils类里面实现的接口
public void success(MutiBean mutiBean) {
modelCallBack.modelsuccess(mutiBean);

}

@Override
public void failure(Exception e) {
modelCallBack.modelfailure(e);
}
});
}

//model的接口
public interface ModelCallBack{
public void modelsuccess(MutiBean bean);
public void modelfailure(Exception e);
}
}
这时Mainactivity的成功的回调方法里面有了 bean的数据,将集合传给adapter,设置recyclerview显示
public class MutiAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>{

private Context context;
public MutiAdapter(Context context){
this.context = context;
}
//先定义一个装数据的集合,一开始是空的,调用adddata方法时候集合才有数据
private List<MutiBean.ResultBean.DataBean> listda;

public void addData(List<MutiBean.ResultBean.DataBean> list){
//list是传来的集合,里面有请求到的数据
if(listda==null){
//如果不存在这个集合 就创建一个
listda = new ArrayList<>();
}
//将传来的集合 添加进去
listda.addAll(list);
//刷新适配器
notifyDataSetChanged();

}
@Override
//创建viewholder 的
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
//根据 不同的类型 创建不同的viewholder
if(viewType == 0){
//一张图片
View view1 = View.inflate(context, R.layout.muti_item1,null);
ViewHolder1 viewHolder1 = new ViewHolder1(view1);
return viewHolder1;
}else if (viewType==1){
//两张图片
View view2 = View.inflate(context,R.layout.muti_item2,null);
ViewHolder2 viewHolder2 = new ViewHolder2(view2);
return viewHolder2;
}else{
View view3 = View.inflate(context,R.layout.muti_item3,null);
ViewHolder3 viewHolder3 = new ViewHolder3(view3);
return viewHolder3;
}
}

@Override
//显示图片的 判断viewholder的不同,设置控件的值
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {

//判断viewholder
if(holder instanceof ViewHolder1){
ViewHolder1 holder1 = (ViewHolder1) holder;

ImageLoader.getInstance().displayImage(listda.get(position).getThumbnail_pic_s(),holder1.item1_image);
}else if (holder instanceof ViewHolder2){
ViewHolder2 holder2 = (ViewHolder2) holder;

ImageLoader.getInstance().displayImage(listda.get(position).getThumbnail_pic_s(),holder2.item2_image1);
ImageLoader.getInstance().displayImage(listda.get(position).getThumbnail_pic_s02(),holder2.item2_image2);
}else{
ViewHolder3 holder3 = (ViewHolder3) holder;

ImageLoader.getInstance().displayImage(listda.get(position).getThumbnail_pic_s(),holder3.item3_image1);
ImageLoader.getInstance().displayImage(listda.get(position).getThumbnail_pic_s02(),holder3.item3_image2);
ImageLoader.getInstance().displayImage(listda.get(position).getThumbnail_pic_s03(),holder3.item3_image3);

}
}

@Override
public int getItemViewType(int position) {
//返回条目类型的数量,3种条目 返回0,1,2
//判断是哪种条目类型
if(!TextUtils.isEmpty(listda.get(position).getThumbnail_pic_s03())){
return 2;
}else if(!TextUtils.isEmpty(listda.get(position).getThumbnail_pic_s02())){
return 1;
}else{
return 0;
}
}

@Override
public int getItemCount() {
return listda==null?0:listda.size();//返回的条目的数量
}

//自己写的三个viewholder,获取控件的id
public static class ViewHolder1 extends RecyclerView.ViewHolder {

private final ImageView item1_image;

public ViewHolder1(View itemView) {
super(itemView);
//一张图片的
item1_image = (ImageView) itemView.findViewById(R.id.item1_image);

}
}

public static class ViewHolder2 extends RecyclerView.ViewHolder {

private final ImageView item2_image1;
private final ImageView item2_image2;

public ViewHolder2(View itemView) {
super(itemView);
item2_image1 = (ImageView) itemView.findViewById(R.id.item2_image1);
item2_image2 = (ImageView) itemView.findViewById(R.id.item2_image2);
}
}

public static class ViewHolder3 extends RecyclerView.ViewHolder {

private final ImageView item3_image1;
private final ImageView item3_image2;
private final ImageView item3_image3;

public ViewHolder3(View itemView) {
super(itemView);
item3_image1 = (ImageView) itemView.findViewById(R.id.item3_image1);
item3_image2 = (ImageView) itemView.findViewById(R.id.item3_image2);
item3_image3 = (ImageView) itemView.findViewById(R.id.item3_image3);

}
}
}