hyuas-mes/app/src/main/java/com/uas/hystorage/util/YLDownload.java

package com.uas.hystorage.util;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.support.annotation.NonNull;
import android.util.Log;

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

import okhttp3.Call;
import okhttp3.OkHttpClient;

import okhttp3.Callback;
import okhttp3.Request;
import okhttp3.Response;
import okhttp3.ResponseBody;

/**
 * 文件下载工具栏
 */
public class YLDownload {
    private static YLDownload ylDownload;
    private OkHttpClient client = new OkHttpClient.Builder()
            .connectTimeout(60, TimeUnit.SECONDS)
            .readTimeout(60, TimeUnit.SECONDS)
            .writeTimeout(60, TimeUnit.SECONDS)
            .build();

    //    private OkHttpClient client = new OkHttpClient();


    private YLDownload() {
    }

    public static YLDownload getInstance() {
        if (ylDownload == null) {
            ylDownload = new YLDownload();
        }
        return ylDownload;
    }

    /**
     * @param url                下载地址
     * @param fileDir            储存下载文件的目录
     * @param fileName           文件名称
     * @param onDownloadListener 下载监听
     */
    public void download(String url, String fileDir, String fileName, OnDownloadListener onDownloadListener) {
        Request request = new Request.Builder()
                .url(url)
                .build();
        //MyLog.e("aaa","下载路径是:" + url + ",文件夹:" + fileDir + ",文件名:" + fileName);
        Call call = client.newCall(request);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(@NonNull Call call, @NonNull IOException e) {
                onDownloadListener.onDownloadFailed(e);
            }

            @Override
            public void onResponse(@NonNull Call call, @NonNull Response response) throws IOException {
                if (response.isSuccessful()) {
                    MyLog.e("aaa","下载路径是:" + url + ",文件夹:" + fileDir + ",文件名:" + fileName);
                    ResponseBody responseBody = response.body();
                    File file_dir = new File(fileDir);
                    if (!file_dir.exists()) {
                        file_dir.mkdirs();
                    }
                    File file = new File(file_dir, fileName);
                    FileOutputStream fos = new FileOutputStream(file);


//                    // 获取输入流
//                    InputStream inputStream = responseBody.byteStream();
//                    // 创建文件输出流
//                    FileOutputStream fos = new FileOutputStream(file);
//                    // 定义缓冲区
//                    byte[] buffer = new byte[4096];
//                    int bytesRead;
//
//                    // 读取文件并写入到本地
//                    while ((bytesRead = inputStream.read(buffer)) != -1) {
//                        fos.write(buffer, 0, bytesRead);
//                    }
//                    // 关闭流
//                    fos.close();
//                    inputStream.close();



                    fos.write(responseBody.bytes());
                    fos.close();
                    onDownloadListener.onDownloadSuccess();
                }else {
                    MyLog.e("aaa","下载失败路径是:" + url + ",文件名:" + fileName);
                }


                //                InputStream inputStream = null;
                //                FileOutputStream outputStream = null;
                //                byte[] buff = new byte[2048];
                //                int length = 0;
                //
                //                // 储存下载文件的目录
                //                File file_dir = new File(fileDir);
                //                if (!file_dir.exists()) {
                //                    file_dir.mkdirs();
                //                }
                //                File file = new File(file_dir, fileName);
                //
                //                try {
                //                    inputStream = response.body().byteStream();
                //                    long total = response.body().contentLength();
                //                    outputStream = new FileOutputStream(file);
                //                    length = inputStream.read(buff);
                //                    long sum = 0;
                //                    while (length != -1) {
                //                        outputStream.write(buff, 0, length);
                //                        sum += length;
                //                        int progress = (int) (sum * 1.0f / total * 100);
                //                        // 下载中更新进度条
                //                        onDownloadListener.onDownloading(progress);
                //                    }
                //                    outputStream.flush();
                //                    // 下载完成
                //                    onDownloadListener.onDownloadSuccess();
                //                } catch (Exception e) {
                //                    onDownloadListener.onDownloadFailed(e);
                //                } finally {
                //                    if (inputStream != null) {
                //                        inputStream.close();
                //                    }
                //                    if (outputStream != null) {
                //                        outputStream.close();
                //                    }
                //                }


            }
        });

        //        try {
        //            call.execute();
        //        } catch (IOException e) {
        //            e.printStackTrace();
        //        }
    }
}