Mvp+RecyclerView+Okhttp

源代码如下：

首先要导入依赖

compile 'com.android.support:recyclerview-v7:25.3.1'compile 'com.github.bumptech.glide:glide:3.7.0'compile 'com.squareup.okhttp3:okhttp:3.9.0'compile 'com.jcodecraeer:xrecyclerview:1.3.2'compile 'com.google.code.gson:gson:2.8.2'

 再就是主布局

main布局

<RelativeLayoutxmlns: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"><TextView    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:gravity="center"    android:textSize="24dp"    android:layout_marginTop="10dp"    android:text="搜索商品"/><Button    android:id="@+id/btn_grid_lv"    android:layout_width="42dp"    android:layout_height="42dp"    android:layout_alignParentEnd="true"    android:layout_alignParentRight="true"    android:layout_alignParentTop="true"    android:background="@drawable/grid_icon" /><TextView    android:id="@+id/textView"    android:layout_marginTop="5dp"    android:layout_width="match_parent"    android:layout_height="2dp"    android:layout_below="@+id/btn_grid_lv"    android:layout_centerHorizontal="true"    android:background="#000" /><LinearLayout    android:id="@+id/ll"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:orientation="horizontal"    android:layout_alignTop="@+id/textView"    android:layout_alignParentStart="true">    <EditText        android:id="@+id/et_seek"        android:layout_weight="5"        android:layout_width="0dp"        android:layout_height="50dp" />    <Button        android:id="@+id/btn_seek"        android:layout_weight="1"        android:layout_width="0dp"        android:layout_height="wrap_content"        android:text="搜索"        /></LinearLayout><com.jcodecraeer.xrecyclerview.XRecyclerView    android:id="@+id/xrv"    android:layout_below="@+id/ll"    android:layout_width="match_parent"    android:layout_height="wrap_content"></com.jcodecraeer.xrecyclerview.XRecyclerView></RelativeLayout>

第二个布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent">    <ImageView        android:id="@+id/list_img"        android:layout_width="100dp"        android:layout_height="100dp"        android:src="@mipmap/ic_launcher" />    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="vertical">        <TextView            android:id="@+id/list_title"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_marginTop="10dp"            android:layout_marginLeft="10dp"            android:text="手机"/>        <LinearLayout            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:orientation="horizontal">            <TextView                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_marginTop="10dp"                android:layout_marginLeft="10dp"                android:text="原价:9999"/>            <TextView                android:id="@+id/list_price"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_marginTop="10dp"                android:layout_marginLeft="50dp"                android:text="折扣价:"/>        </LinearLayout>    </LinearLayout></LinearLayout>

第三个布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="horizontal"    android:layout_width="match_parent"    android:layout_height="match_parent">    <ImageView        android:id="@+id/list_img"        android:layout_width="200dp"        android:layout_height="200dp"        android:src="@mipmap/ic_launcher" />    <TextView        android:id="@+id/list_title"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginLeft="10dp"        android:text="手机" />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginLeft="10dp"        android:text="原价:$9999" />    <TextView        android:id="@+id/list_price"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginLeft="10dp"        android:text="折扣价:" /></LinearLayout>

创建Adapter包和Adapter类

public class XAdapter extends RecyclerView.Adapter<XAdapter.ViewHolder> {    private Context context;    private List<Bean.DataBean> list;    private int myResource;    public XAdapter(Context context, List<Bean.DataBean> list, int myResource) {        this.context = context;        this.list = list;        this.myResource = myResource;    }    @Override    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        View view = View.inflate(context, myResource, null);        ViewHolder holder = new ViewHolder(view);        return holder;    }    @Override    public void onBindViewHolder(ViewHolder holder, int position) {        String[] split = list.get(position).getImages().split("\\|");        Log.e("--------",split[0]);        Glide.with(context).load(split[0]).into(holder.listimg);        holder.listprice.setText("折扣价:$"+list.get(position).getPrice());        holder.listtitle.setText(list.get(position).getTitle());    }    @Override    public int getItemCount() {        return list.size();    }    class ViewHolder extends RecyclerView.ViewHolder{        private ImageView listimg;        private TextView listprice;        private TextView listtitle;        public ViewHolder(View itemView) {            super(itemView);            listimg =(ImageView)itemView.findViewById(R.id.list_img);            listprice =(TextView)itemView.findViewById(R.id.list_price);            listtitle = (TextView) itemView.findViewById(R.id.list_title);        }    }}

创建Bean包

bean类

private String msg;private String code;private String page;private List<DataBean> data;

创建persener类 p层

public class Perseners {    private static final String TAG = "Perseners";    private Iview inv;    private List<Bean.DataBean> list;    public void attach(Iview inv){        this.inv=inv;    }    public void get(Map<String,String> map){        HttpUtils.getInstance().get("http://120.27.23.105/product/searchProducts", map, new CallBack() {            @Override            public void onSuccess(Object o) {                Bean bean=(Bean) o;                list = bean.getData();                //Log.e(TAG, "onSuccess: "+list.toString());                inv.success(list);            }            @Override            public void onFailed(Exception e) {                inv.failed(e);            }        },Bean.class);    }    //解决内存泄漏问题    public void deleteView(){        if(inv!=null){            inv=null;        }    }}

CallBack类 放两个接口

public interface CallBack {    void onSuccess(Object o);    void onFailed(Exception e);}

HttpUtils类

public class HttpUtils {    private static volatile HttpUtils instance;    private static Handler handler = new Handler();    private HttpUtils(){    }    public static HttpUtils getInstance() {        if (instance == null) {            synchronized (HttpUtils.class) {                if (instance == null) {                    instance = new HttpUtils();                }            }        }        return instance;    }    //get请求    public void get(String url, Map<String,String> map, final CallBack callBack, final Class c){        //对url和参数做拼接处理        StringBuffer stringBuffer = new StringBuffer();        stringBuffer.append(url);        //判断是否存在?   if中是存在        if(stringBuffer.indexOf("?")!=-1 ){            //判断?是否在最后一位    if中是不在最后一位            if(stringBuffer.indexOf("?")!=stringBuffer.length()-1){                stringBuffer.append("&");            }        }else{            stringBuffer.append("?");        }        for(Map.Entry<String,String> entry:map.entrySet()){            stringBuffer.append(entry.getKey())                    .append("=")                    .append(entry.getValue())                    .append("&");        }        //判断是否存在&   if中是存在        if(stringBuffer.indexOf("&")!=-1){            stringBuffer.deleteCharAt(stringBuffer.lastIndexOf("&"));        }        //1:创建OkHttpClient对象        OkHttpClient okHttpClient = new OkHttpClient.Builder()                .addInterceptor(new Logger())                .build();        //2:创建Request对象        final Request request = new Request.Builder()                .get()                .url(stringBuffer.toString())                .build();        //3:创建Call对象        Call call = okHttpClient.newCall(request);        //4:请求网络        call.enqueue(new Callback() {            //请求失败            @Override            public void onFailure(Call call, final IOException e) {                handler.post(new Runnable() {                    @Override                    public void run() {                        callBack.onFailed(e);                    }                });            }            //请求成功            @Override            public void onResponse(Call call, Response response) throws IOException {                String result = response.body().string();                //拿到数据解析                final Object o = new Gson().fromJson(result, c);                //当前是在子线程,回到主线程中                handler.post(new Runnable() {                    @Override                    public void run() {                        //回调                        callBack.onSuccess(o);                    }                });            }        });    }    //post请求    public void post(String url, Map<String,String> map, final CallBack callBack, final Class c){        //1:创建OkHttpClient对象        OkHttpClient okHttpClient = new OkHttpClient();        //2:提供post请求需要的body对象        FormBody.Builder builder = new FormBody.Builder();        for(Map.Entry<String,String> entry:map.entrySet()){            builder.add(entry.getKey(),entry.getValue());        }        FormBody body = builder.build();        //3:创建Request对象        final Request request = new Request.Builder()                .post(body)                .url(url)                .build();        //4:创建Call对象        Call call = okHttpClient.newCall(request);        //5:请求网络        call.enqueue(new Callback() {            //请求失败            @Override            public void onFailure(Call call, final IOException e) {                handler.post(new Runnable() {                    @Override                    public void run() {                        callBack.onFailed(e);                    }                });            }            //请求成功            @Override            public void onResponse(Call call, Response response) throws IOException {                String result = response.body().string();                //拿到数据解析                final Object o = new Gson().fromJson(result, c);                //当前是在子线程,回到主线程中                handler.post(new Runnable() {                    @Override                    public void run() {                        //回调                        callBack.onSuccess(o);                    }                });            }        });    }}

 Iview类  也是放接口的

public interface Iview {    void success(List<Bean.DataBean> list);    void failed(Exception e);}

拦截器的代码

public class Logger implements Interceptor {    @Override    public Response intercept(Chain chain) throws IOException {        Request original = chain.request();        HttpUrl url=original.url().newBuilder()                .addQueryParameter("source","android")                .build();        //添加请求头        Request request = original.newBuilder()                .url(url)                .build();        return chain.proceed(request);    }}

mainActivity主页

public class MainActivity extends AppCompatActivity implements XRecyclerView.LoadingListener,Iview{    private XRecyclerView xrv;    private TextView etseek;    private Button btn;    private TextView btnseek;    private Perseners perseners;    int flag=1;    int page=1;    private XAdapter xAdapter;    private ArrayList<Bean.DataBean> list = new ArrayList<>();    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        xrv =(XRecyclerView)findViewById(R.id.xrv);        btn =(Button)findViewById(R.id.btn_grid_lv);        etseek =(TextView)findViewById(R.id.et_seek);        btnseek =(TextView) findViewById(R.id.btn_seek);        //设置上下刷新        xrv.setLoadingListener(this);        xrv.setPullRefreshEnabled(true);        xrv.setLoadingMoreEnabled(true);        xAdapter = new XAdapter(MainActivity.this,list,R.layout.list1);        LinearLayoutManager linearLayoutManager=new LinearLayoutManager(this);        xrv.setLayoutManager(linearLayoutManager);        xrv.setAdapter(xAdapter);        //p层对象        perseners = new Perseners();        perseners.attach(this);        Map<String,String> map = new HashMap<>();        map.put("keywords","笔记本");        map.put("page","1");        perseners.get(map);        btn.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                flag++;                if (flag%2==0){                    btn.setBackgroundResource(R.drawable.grid_icon);                    GridLayoutManager manager=new GridLayoutManager(MainActivity.this,2);                    xrv.setLayoutManager(manager);                    xAdapter = new XAdapter(MainActivity.this, list, R.layout.list1);                    xrv.setAdapter(xAdapter);                }else{                    btn.setBackgroundResource(R.drawable.lv_icon);                    LinearLayoutManager linearLayoutManager=new LinearLayoutManager(MainActivity.this);                    xrv.setLayoutManager(linearLayoutManager);                    xAdapter = new XAdapter( MainActivity.this, list,R.layout.list2);                    xrv.setAdapter(xAdapter);                }            }        });        btnseek.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                String string = etseek.getText().toString();                list.clear();                Map<String,String> map = new HashMap<>();                map.put("keywords",string);//keywords=笔记本&page=1                map.put("page","1");//keywords=笔记本&page=1                perseners.get(map);            }        });    }    @Override    public void onRefresh() {        page=1;        list.clear();        Map<String,String> map = new HashMap<>();        map.put("keywords","笔记本");        map.put("page","1");        perseners.get(map);        xrv.refreshComplete();    }    @Override    public void onLoadMore() {        page++;        Map<String,String> map = new HashMap<>();        map.put("keywords","笔记本");//keywords=笔记本&page=1        map.put("page",page+"");//keywords=笔记本&page=1        perseners.get(map);        xrv.refreshComplete();    }    @Override    public void success(List<Bean.DataBean> list) {        this.list.addAll(list);        Log.e("嗝屁", "success: "+list.toString() );        xAdapter.notifyDataSetChanged();    }    @Override    public void failed(Exception e) {    }    //内存泄漏    @Override    protected void onDestroy() {        super.onDestroy();        if (perseners!=null){            perseners.deleteView();        }    }}

文章最后进行网络请求

<uses-permission android:name="android.permission.INTERNET"></uses-permission><uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"></uses-permission><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission><uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"></uses-permission>