這個沒有什麼好說的 同標題

package soexample.umeng.com.okhttp.utils;

import android.os.Environment;

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

import okhttp3.Callback;
import okhttp3.FormBody;
import okhttp3.MediaType;
import okhttp3.MultipartBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.logging.HttpLoggingInterceptor;

/**
 * 靜態內部類單例模式
 * OKHttp的重點
 * 1：同步和非同步的區別
 * 2：get和POST怎麼使用
 * 3：怎麼封裝
 * 擴充套件有攔截器，上傳圖片，原始碼區看一看
 */
public class OkUtils {
    private OkHttpClient okHttpClient;

    private OkUtils() {
        //日誌攔截器
        HttpLoggingInterceptor loggingInterceptor = new HttpLoggingInterceptor();
        okHttpClient = new OkHttpClient.Builder()
                .connectTimeout(20, TimeUnit.SECONDS)
                .readTimeout(20, TimeUnit.SECONDS)
                .callTimeout(20, TimeUnit.SECONDS)
                .addInterceptor(loggingInterceptor)
                .build();
    }

    public static OkUtils getInstance() {
        return OkHolder.okUtils;
    }

    static class OkHolder {
        private static final OkUtils okUtils = new OkUtils();
    }

    //這是同步的get和post
    public String getSync(String url) throws IOException {
        Request request = new Request.Builder().url(url).build();
        return okHttpClient.newCall(request).execute().body().string();
    }

    public String postSync(String url, String key, String value) throws IOException {
        RequestBody body = new FormBody.Builder().add(key, value).build();
        Request request = new Request.Builder().url(url).post(body).build();
        return okHttpClient.newCall(request).execute().body().string();
    }

    //非同步的get和post

    public void getAsync(String url, Callback callback) {
        Request request = new Request.Builder().url(url).build();
        okHttpClient.newCall(request).enqueue(callback);
    }

    public void postAsync(String url, Callback callback) {
        RequestBody body = new FormBody.Builder().add("key", "value").build();
        Request request = new Request.Builder().url(url).post(body).build();
        okHttpClient.newCall(request).enqueue(callback);
    }

    //上傳圖片  必須是POST
    public void upLoadImage(String url, String uid, Callback callback) {
        File file = new File(Environment.getExternalStorageDirectory() + "/Pictures/test.jpg");
        //上傳圖片需要 MultipartBody
        MultipartBody.Builder body = new MultipartBody.Builder().setType(MultipartBody.FORM)
                .addFormDataPart("uid", uid)
                .addFormDataPart("file", "test.jpg", RequestBody.create(MediaType.parse("image/jpg"), file));
        RequestBody body1 = body.build();
        Request request = new Request.Builder().url(url).post(body1).build();
        okHttpClient.newCall(request).enqueue(callback);
    }

}