okhttp实现下载和上传图片

一 .先导依赖`

implementation 'com.squareup.okhttp3:okhttp:3.11.0'

二.配置权限

上代码

MainActivity

package com.example.picture_dome;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

import com.example.picture_dome.presenter.Presenter;
import com.example.picture_dome.presenter.SecondPresenter;

public class MainActivity extends AppCompatActivity implements View.OnClickListener, Presenter.onLoadData{

    private Button down;
    private Button chuan;
    private ImageView img;
    private Presenter mPresenter;
    private SecondPresenter mSecondPresenter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
        mPresenter = new Presenter(this);
        mSecondPresenter = new SecondPresenter();
    }

    private void initView() {
        down = (Button) findViewById(R.id.down);
        chuan = (Button) findViewById(R.id.chuan);
        img = (ImageView) findViewById(R.id.img);

        down.setOnClickListener(this);
        chuan.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.down:
                mPresenter.loaddata();

                break;
            case R.id.chuan:
                mSecondPresenter.loaddata();
                break;
        }
    }

    @Override
    public void success(final byte[] bytes) {
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                Bitmap bitmap = BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
                img.setImageBitmap(bitmap);
            }
        });
    }

    @Override
    public void error() {
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                Toast.makeText(MainActivity.this, "没有网络", Toast.LENGTH_SHORT).show();
            }
        });
    }

}

布局

下载的实现 接口MVP P层

package com.example.picture_dome.presenter;

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

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

/**
 * date:2018/11/13
 * author:赵豪轩(xuan)
 * function:
 */
public class Presenter {
    String path="https://10.url.cn/eth/ajNVdqHZLLAxibwnrOxXSzIxA76ichutwMCcOpA45xjiapneMZsib7eY4wUxF6XDmL2FmZEVYsf86iaw/";

    public void loaddata() {

        OkHttpClient okHttpClient = new OkHttpClient.Builder()
                .writeTimeout(10, TimeUnit.SECONDS)
                .readTimeout(10, TimeUnit.SECONDS)
                .connectTimeout(10, TimeUnit.SECONDS)
                .build();

        Request request = new Request.Builder()
                .url(path)
                .build();

        okHttpClient.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                mOnLoadData.error();
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                byte[] bytes = response.body().bytes();

                mOnLoadData.success(bytes);
            }
        });

    }


    public interface onLoadData{
        void success(byte[] bytes);
        void error();
    }
    private onLoadData mOnLoadData;

    public Presenter(onLoadData onLoadData) {
        mOnLoadData = onLoadData;
    }
}

上传的实现

package com.example.picture_dome.presenter;

import android.os.Environment;
import android.util.Log;

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

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.MediaType;
import okhttp3.MultipartBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;

/**
 * date:2018/11/13
 * author:赵豪轩(xuan)
 * function:
 */
public class SecondPresenter {
    String path="https://www.718shop.com/sell/sell.m.picture.upload.do";

    public void loaddata() {
        //上传的文件的对象
        File file = new File(Environment.getExternalStorageDirectory()+"/Download", "cccc.jpg");
        //创建RequestBody封装参数
        RequestBody requestBody = RequestBody.create(MediaType.parse("application/octet-stream"), file);
        //创建MultipartBody,给RequestBody进行设置
        MultipartBody multipartBody = new MultipartBody.Builder()
                .setType(MultipartBody.FORM)
                .addFormDataPart("image", "cccc.jpg", requestBody)
                .build();

        OkHttpClient okHttpClient = new OkHttpClient.Builder()
                .writeTimeout(10, TimeUnit.SECONDS)
                .readTimeout(10, TimeUnit.SECONDS)
                .connectTimeout(10, TimeUnit.SECONDS)
                .build();

        final Request request = new Request.Builder()
                .url(path)
                .post(multipartBody)
                .build();

        okHttpClient.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                Log.e("zhx","错误" + e);
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                String string = response.body().string();
                Log.e("zhx","          " + string );
            }
        });

    }

}