OkHttp的简单封装(没有掌握，只是Copy)

注释：对okhttp的简单封装实际上就是就是更加简单的调用

方法：

1.新建http文件夹

2.然后新建两个类，然后类名为：BaseCallBack,OkHttpHelper

3.为了使用这个dialog，需要在build中加入相应的依赖

3.再新建SpotsCallBack类，这个类用于使用okhttp来获取json数据，再用Gson解析，得到的数据放入带list<javabean>时，显示一个dialog窗口

4.在activity中使用这个封装

代码：

2.BaseCallBack

package zuo.com.ui.http;

import com.google.gson.internal.$Gson$Types;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.Response;

import java.io.IOException;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;



public abstract class BaseCallback <T> {


    public   Type mType;

    static Type getSuperclassTypeParameter(Class<?> subclass)
    {
        Type superclass = subclass.getGenericSuperclass();
        if (superclass instanceof Class)
        {
            throw new RuntimeException("Missing type parameter.");
        }
        ParameterizedType parameterized = (ParameterizedType) superclass;
        return $Gson$Types.canonicalize(parameterized.getActualTypeArguments()[0]);
    }


    public BaseCallback()
    {
        mType = getSuperclassTypeParameter(getClass());
    }



    public  abstract void onBeforeRequest(Request request);


    public abstract  void onFailure(Request request, Exception e) ;


    /**
     *请求成功时调用此方法
     * @param response
     */
    public abstract  void onResponse(Response response);

    /**
     *
     * 状态码大于200，小于300 时调用此方法
     * @param response
     * @param t
     * @throws IOException
     */
    public abstract void onSuccess(Response response,T t) ;

    /**
     * 状态码400，404，403，500等时调用此方法
     * @param response
     * @param code
     * @param e
     */
    public abstract void onError(Response response, int code,Exception e) ;

}

3..OkHttpHelper:

package zuo.com.ui.http;

import android.os.Handler;
import android.os.Looper;
import android.util.Log;

import com.google.gson.Gson;
import com.google.gson.JsonParseException;
import com.squareup.okhttp.Callback;
import com.squareup.okhttp.FormEncodingBuilder;
import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.RequestBody;
import com.squareup.okhttp.Response;

import java.io.IOException;
import java.util.Map;
import java.util.concurrent.TimeUnit;



public class OkHttpHelper {






        public static final String TAG="OkHttpHelper";

        private  static  OkHttpHelper mInstance;
        private OkHttpClient mHttpClient;
        private Gson mGson;

        private Handler mHandler;



        static {
            mInstance = new OkHttpHelper();
        }

        private OkHttpHelper(){

            mHttpClient = new OkHttpClient();
            mHttpClient.setConnectTimeout(10, TimeUnit.SECONDS);
            mHttpClient.setReadTimeout(10,TimeUnit.SECONDS);
            mHttpClient.setWriteTimeout(30,TimeUnit.SECONDS);

            mGson = new Gson();

            mHandler = new Handler(Looper.getMainLooper());

        };

        public static  OkHttpHelper getInstance(){
            return  mInstance;
        }




        public void get(String url,BaseCallback callback){


            Request request = buildGetRequest(url);

            request(request,callback);

        }


        public void post(String url,Map<String,String> param, BaseCallback callback){

            Request request = buildPostRequest(url,param);
            request(request,callback);
        }





        public  void request(final Request request,final  BaseCallback callback){

            callback.onBeforeRequest(request);

            mHttpClient.newCall(request).enqueue(new Callback() {

                @Override
                public void onFailure(Request request, IOException e) {
                    callback.onFailure(request,e);

                }

                @Override
                public void onResponse(Response response) throws IOException {

                    callback.onResponse(response);

                    if(response.isSuccessful()) {

                        String resultStr = response.body().string();

                        Log.d(TAG, "result=" + resultStr);

                        if (callback.mType == String.class){
                            callbackSuccess(callback,response,resultStr);
                        }
                        else {
                            try {

                                Object obj = mGson.fromJson(resultStr, callback.mType);
                                callbackSuccess(callback,response,obj);
                            }
                            catch (JsonParseException e){ // Json解析的错误
                                callback.onError(response,response.code(),e);
                            }
                        }
                    }
                    else {
                        callbackError(callback,response,null);
                    }

                }
            });


        }


        private void callbackSuccess(final  BaseCallback callback , final Response response, final Object obj ){

            mHandler.post(new Runnable() {
                @Override
                public void run() {
                    callback.onSuccess(response, obj);
                }
            });
        }


        private void callbackError(final  BaseCallback callback , final Response response, final Exception e ){

            mHandler.post(new Runnable() {
                @Override
                public void run() {
                    callback.onError(response,response.code(),e);
                }
            });
        }



        private  Request buildPostRequest(String url,Map<String,String> params){

            return  buildRequest(url,HttpMethodType.POST,params);
        }

        private  Request buildGetRequest(String url){

            return  buildRequest(url,HttpMethodType.GET,null);
        }

        private  Request buildRequest(String url,HttpMethodType methodType,Map<String,String> params){


            Request.Builder builder = new Request.Builder()
                    .url(url);

            if (methodType == HttpMethodType.POST){
                RequestBody body = builderFormData(params);
                builder.post(body);
            }
            else if(methodType == HttpMethodType.GET){
                builder.get();
            }


            return builder.build();
        }



        private RequestBody builderFormData(Map<String,String> params){


            FormEncodingBuilder builder = new FormEncodingBuilder();

            if(params !=null){

                for (Map.Entry<String,String> entry :params.entrySet() ){

                    builder.add(entry.getKey(),entry.getValue());
                }
            }

            return  builder.build();

        }



        enum  HttpMethodType{

            GET,
            POST,

        }



}

3.SpotsCallBack代码：

package zuo.com.ui.http;

import android.content.Context;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.Response;


import dmax.dialog.SpotsDialog;


public abstract class SpotsCallBack<T> extends BaseCallback<T> {


    private  Context mContext;

    private  SpotsDialog mDialog;

    public SpotsCallBack(Context context){

        mContext = context;

        initSpotsDialog();
    }



    private  void initSpotsDialog(){

        mDialog = new SpotsDialog(mContext,"拼命加载中...");

    }

    public  void showDialog(){
        mDialog.show();
    }

    public  void dismissDialog(){
        mDialog.dismiss();
    }


    public void setLoadMessage(int resId){
        mDialog.setMessage(mContext.getString(resId));
    }


    @Override
    public void onFailure(Request request, Exception e) {
        dismissDialog();
    }

    @Override
    public void onBeforeRequest(Request request) {

        showDialog();
    }

    @Override
    public void onResponse(Response response) {
        dismissDialog();
    }
}

4.添加的dependence依赖：

    compile 'com.github.d-max:spots-dialog:0.4@aar'
}
//compile 'com.github.d-max:spots-dialog:0.4@aar'是对一个加载dialog的依赖

5.在Activity中使用这个封装的类：首先创建对象，然后编写方法（这个方法实际上就是对list<javabean>的对象赋值，然后将值设置到页面上），之后调用这个方法，之后将值设置到页面上

//简单封装okhttp操作，首先创建对象
 private OkHttpHelper httpHelper = OkHttpHelper.getInstance();

requestHttpImformation();
initSlider();

    /**
     * 获取网络上的数据，用get方法，得到的json数据
     */
    private void requestHttpImformation(){
        String url ="http://112.124.22.238:8081/course_api/banner/query?type=1";
//        OkHttpClient okHttpClient=new OkHttpClient();
//        RequestBody body = new FormEncodingBuilder().add("type","1").build();
//        Request request=new Request.Builder().url(url).post(body).build();
//
//
//         okHttpClient.newCall(request).enqueue(new Callback() {
//                @Override
//                public void onFailure(Request request, IOException e) {
//
//                }
//
//                @Override
//                public void onResponse(Response response) throws IOException {
//
//                    if (response.isSuccessful()) {
//                        String json = response.body().string();                   //json数据只需要用.string()获取就行
//                        Type type=new TypeToken<List<Banner>>(){}.getType();      //使用Gson实现对json数据的解析
//                        banners=gson.fromJson(json,type);                             //然后放在list中
//
//                        Log.d(TAG, "获取的数据为" + json);
//                    }
//
//                }
//            });
        httpHelper.get(url, new SpotsCallBack<List<Banner>>(getContext()){


            @Override
            public void onSuccess(Response response, List<Banner> mbanners) {

                banners = mbanners;
                initSlider();
            }

            @Override
            public void onError(Response response, int code, Exception e) {

            }
        });


    }

    private void initSlider() {
        if(banners!=null) {
            for (Banner b:banners) {
                TextSliderView textSliderView = new TextSliderView(this.getActivity());
                textSliderView.description(b.getName()).image(b.getImgUrl());
                sliderLayout.addSlider(textSliderView);

            }

        }
//        textSliderView.description("新品男装").image(R.mipmap.slider_mani);
//        textSliderView.setOnSliderClickListener(new BaseSliderView.OnSliderClickListener() {
//            @Override
//            public void onSliderClick(BaseSliderView slider) {
//                Toast.makeText(getContext(),"新品男装",Toast.LENGTH_SHORT).show();
//            }
//        });
//
//        TextSliderView textSliderView1 = new TextSliderView(this.getActivity());
//        textSliderView1.description("潮流女装").image(R.mipmap.slider_woman);
//        textSliderView1.setOnSliderClickListener(new BaseSliderView.OnSliderClickListener() {
//            @Override
//            public void onSliderClick(BaseSliderView slider) {
//                Toast.makeText(getContext(),"潮流女装",Toast.LENGTH_SHORT).show();
//            }
//        });
//
//        TextSliderView textSliderView2 = new TextSliderView(this.getActivity());
//        textSliderView2.description("时尚男装").image(R.mipmap.slider_man);
//        textSliderView2.setOnSliderClickListener(new BaseSliderView.OnSliderClickListener() {
//            @Override
//            public void onSliderClick(BaseSliderView slider) {
//                Toast.makeText(getContext(),"时尚男装",Toast.LENGTH_SHORT).show();
//            }
//        });
//
//        TextSliderView textSliderView3 = new TextSliderView(this.getActivity());
//        textSliderView3.description("青春女装").image(R.mipmap.slider_yu);
//        textSliderView3.setOnSliderClickListener(new BaseSliderView.OnSliderClickListener() {
//            @Override
//            public void onSliderClick(BaseSliderView slider) {
//                Toast.makeText(getContext(),"青春女装",Toast.LENGTH_SHORT).show();
//            }
//        });
//
//        sliderLayout.addSlider(textSliderView);
//        sliderLayout.addSlider(textSliderView1);
//        sliderLayout.addSlider(textSliderView2);
//        sliderLayout.addSlider(textSliderView3);
        sliderLayout.setPresetIndicator(SliderLayout.PresetIndicators.Center_Bottom);    //这个为默认的indicator
//       sliderLayout.setCustomIndicator(pagerIndicator);     //设置下标的点，所在的位置在底部正中间
        sliderLayout.setCustomAnimation(new DescriptionAnimation());                       //动画效果
        sliderLayout.setPresetTransformer(SliderLayout.Transformer.RotateUp);              //设置转动模式，下面的文字说明自动出来
        sliderLayout.setDuration(3000);              //设置动画效果3秒自动转动
        //sliderLayout的监听事件，这个监听事件
        sliderLayout.addOnPageChangeListener(new ViewPagerEx.OnPageChangeListener() {
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
        //    Log.d(TAG,"onPageScrolled");
            }

            @Override
            public void onPageSelected(int position) {
          //      Log.d(TAG,"onPageSelected");

            }

            @Override
            public void onPageScrollStateChanged(int state) {
            //    Log.d(TAG,"onPageScrollStateChanged");

            }
        });

    }

效果图

最上面的sliderlayout，就是获取json数据，解析到sliderview上面