搜索界面Mvp+RecyclerView+Okhttp

Dear 丶 2023-10-17 22:00 20阅读 0赞

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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

第二个布局

第三个布局

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>

[Center]: https://img-blog.csdn.net/20171114184809291?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvaG9uZ2Z1cWlhbmc=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
[Center 1]: https://img-blog.csdn.net/20171114185102033?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvaG9uZ2Z1cWlhbmc=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center