ok封装和解析json封装

来源：互联网发布：vb label 字体大小编辑：程序博客网时间：2024/05/22 04:44
OkHttp3Utils 

import android.os.Environment;import android.os.Handler;import java.io.File;import java.util.concurrent.TimeUnit;import okhttp3.Cache;import okhttp3.Call;import okhttp3.Callback;import okhttp3.OkHttpClient;import okhttp3.Request;public class OkHttp3Utils {    /**     * 懒汉 安全 加同步     * 私有的静态成员变量 只声明不创建     * 私有的构造方法     * 提供返回实例的静态方法     */    private static OkHttp3Utils okHttp3Utils = null;    private OkHttp3Utils() {    }    public static OkHttp3Utils getInstance() {        if (okHttp3Utils == null) {            //加同步安全            synchronized (OkHttp3Utils.class) {                if (okHttp3Utils == null) {                    okHttp3Utils = new OkHttp3Utils();                }            }        }        return okHttp3Utils;    }    private static OkHttpClient okHttpClient = null;    public synchronized static OkHttpClient getOkHttpClient() {        if (okHttpClient == null) {            File sdcache = new File(Environment.getExternalStorageDirectory(), "cache");            int cacheSize = 10 * 1024 * 1024;            //拦截器            okHttpClient = new OkHttpClient.Builder().connectTimeout(15, TimeUnit.SECONDS)                    //添加OkHttp3的拦截器                    .writeTimeout(20, TimeUnit.SECONDS).readTimeout(20, TimeUnit.SECONDS)                    .cache(new Cache(sdcache.getAbsoluteFile(), cacheSize))                    .build();        }        return okHttpClient;    }    private static Handler mHandler = null;    public synchronized static Handler getHandler() {        if (mHandler == null) {            mHandler = new Handler();        }        return mHandler;    }    /**     * get请求     * 参数1 url     * 参数2 回调Callback     */    public static void doGet(String url, Callback callback) {        //创建OkHttpClient请求对象        OkHttpClient okHttpClient = getOkHttpClient();        //创建Request        Request request = new Request.Builder().url(url).build();        //得到Call对象        Call call = okHttpClient.newCall(request);        //执行异步请求        call.enqueue(callback);    }}

GsonObjectCallback


import android.os.Handler;import com.google.gson.Gson;import java.io.IOException;import java.lang.reflect.ParameterizedType;import java.lang.reflect.Type;import okhttp3.Call;import okhttp3.Callback;import okhttp3.Response;/** * 1. 类的用途 如果要将得到的json直接转化为集合 建议使用该类 * 该类的onUi() onFailed()方法运行在主线程 *   */public abstract class GsonObjectCallback<T> implements Callback {    private Handler handler = OkHttp3Utils.getInstance().getHandler();    //主线程处理    public abstract void onUi(T t);    //主线程处理    public abstract void onFailed(Call call, IOException e);    //请求失败    @Override    public void onFailure(final Call call, final IOException e) {        handler.post(new Runnable() {            @Override            public void run() {                onFailed(call, e);            }        });    }    //请求json 并直接返回泛型的对象 主线程处理    @Override    public void onResponse(Call call, Response response) throws IOException {        //如果返回的数据超过1M就不要使用string方法，这样会把数据全部加载到内存中，应该使用流；        String json = response.body().string();        Class<T> cls = null;        Class clz = this.getClass();        ParameterizedType type = (ParameterizedType) clz.getGenericSuperclass();        Type[] types = type.getActualTypeArguments();        cls = (Class<T>) types[0];        Gson gson = new Gson();        final T t = gson.fromJson(json, cls);        handler.post(new Runnable() {            @Override            public void run() {                onUi(t);            }        });    }}//使用
private void getData() {    OkHttp3Utils.doGet("http://news-at.zhihu.com/api/4/theme/11", new GsonObjectCallback<NewsBean>() {        @Override        public void onUi(NewsBean userBean) {            Toast.makeText(MainActivity.this, userBean.getName(), Toast.LENGTH_SHORT).show();            Toast.makeText(MainActivity.this, userBean.getImage(), Toast.LENGTH_SHORT).show();        }        @Override        public void onFailed(Call call, IOException e) {        }    });}
GsonArrayCallback


import android.os.Handler;import com.google.gson.Gson;import com.google.gson.JsonArray;import com.google.gson.JsonElement;import com.google.gson.JsonParser;import java.io.IOException;import java.lang.reflect.ParameterizedType;import java.lang.reflect.Type;import java.util.ArrayList;import java.util.List;import okhttp3.Call;import okhttp3.Callback;import okhttp3.Response;/** * 1. 类的用途 如果要将得到的json直接转化为集合 建议使用该类 * 该类的onUi() onFailed()方法运行在主线程 * 2. @author forever * 3. @date 2017/9/24 18:47 */public abstract class GsonArrayCallback<T> implements Callback {    private Handler handler = OkHttp3Utils.getInstance().getHandler();    //主线程处理    public abstract void onUi(List<T> list);    //主线程处理    public abstract void onFailed(Call call, IOException e);    //请求失败    @Override    public void onFailure(final Call call, final IOException e) {        handler.post(new Runnable() {            @Override            public void run() {                onFailed(call, e);            }        });    }    //请求json 并直接返回集合 主线程处理    @Override    public void onResponse(Call call, Response response) throws IOException {        final List<T> mList = new ArrayList<T>();        String json = response.body().string();        JsonArray array = new JsonParser().parse(json).getAsJsonArray();        Gson gson = new Gson();        Class<T> cls = null;        Class clz = this.getClass();        ParameterizedType type = (ParameterizedType) clz.getGenericSuperclass();        Type[] types = type.getActualTypeArguments();        cls = (Class<T>) types[0];        for(final JsonElement elem : array){            //循环遍历把对象添加到集合            mList.add((T) gson.fromJson(elem, cls));        }        handler.post(new Runnable() {            @Override            public void run() {                onUi(mList);            }        });    }}
阅读全文
0 0