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  • Rxjava+retrofit+okHttp+mvp网络请求数据

    //Api类

    public class Api {
        //http://api.svipmovie.com/front/columns/getVideoList.do?catalogId=402834815584e463015584e539330016
        public static final String benUrl="http://api.svipmovie.com/front/columns/";
    
    }

    //Api接口

    public interface ApiSevert {
    //      getVideoList.do?catalogId=402834815584e463015584e539330016
            @GET("getVideoList.do?catalogId=402834815584e463015584e539330016")
            Observable<Bean> getNoPrea();
    
    }

    //model层

    public interface MainActivityModelListener {
          void getData(OnFinish finish);
    }
    public class MainActivityModel implements MainActivityModelListener {
    
        @Override
        public void getData(final OnFinish finish) {
            OkHttpClient okHttpClient=new OkHttpClient.Builder()
                    //网络拦截器
                   // .addInterceptor(new LoggingInterceptor())
                    .build();
    
            Retrofit retrofit=new Retrofit.Builder()
                    .baseUrl(Api.benUrl)
                    .addCallAdapterFactory(RxJavaCallAdapterFactory.create())
                    .addConverterFactory(GsonConverterFactory.create())
                    //
                    .client(okHttpClient)
                    .build();
            Observable<Bean> getNoPrea = retrofit.create(ApiSevert.class).getNoPrea();
            getNoPrea.subscribeOn(Schedulers.io())
                    .observeOn(AndroidSchedulers.mainThread())
                    .subscribe(new Subscriber<Bean>() {
                        @Override
                        public void onCompleted() {
    
                        }
    
                        @Override
                        public void onError(Throwable e) {
    
                        }
    
                        @Override
                        public void onNext(Bean bean) {
    
                            finish.finish(bean);
                        }
                    });
        }
    }

    //view层

    public interface MainActivityViewListener {
            void ShowData(Bean bean);
    }

    //presenter层,Bean层自己实现

    public interface IPresenter {
        void loadList();
    }
    public class ListPresenter implements IPresenter {
        private final MainActivityModelListener molder;
        private MainActivityViewListener gv;
        public ListPresenter(MainActivityViewListener gv) {
            this.gv=gv;
            molder=new MainActivityModel();
        }
    
    
        @Override
        public void loadList() {
              molder.getData(new OnFinish() {
                  @Override
                  public void finish(Bean bean) {
                      gv.ShowData(bean);
                  }
              });
        }
    }

    //适配器

    public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder>  implements View.OnClickListener,View.OnLongClickListener{
    
        //点击事件
        private OnItemClickListener mOnItemClickListener = null;
        //长按点击事件
        private OnRecyclerItemLongListener mOnItemLong = null;
        private Context context;
        private List<Bean.RetBean.ListBean>list;
    
        public MyAdapter(Context context,List<Bean.RetBean.ListBean> list) {
            this.context = context;
            this.list = list;
        }
    
    
        public void setData(Bean bean) {
    
            if (this.list == null) {
                this.list = new ArrayList<>();
            }
            this.list.addAll(bean.getRet().getList());
            notifyDataSetChanged();
    
        }
    
    
        @Override
        public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            View view = LayoutInflater.from(context).inflate(R.layout.item, parent, false);
            ViewHolder holder=new ViewHolder(view);
            view.setOnClickListener(this);
            view.setOnLongClickListener(this);
            return holder;
        }
    
        @Override
        public void onBindViewHolder(ViewHolder holder, int position) {
            ViewGroup.LayoutParams params = holder.img.getLayoutParams();//得到item的LayoutParams布局参数
            holder.img.setLayoutParams(params);//把params设置给itemView布局
            Uri uri = Uri.parse(list.get(position).getPic());
            holder.img.setImageURI(uri);
            holder.tv.setText(list.get(position).getTitle());
            holder.tv2.setText(list.get(position).getDuration());
                holder.itemView.setTag(position);
    
        }
    
        @Override
        public int getItemCount() {
            return list == null ? 0 : list.size();
        }
    
    
    
        //长按点击事件
        public interface OnRecyclerItemLongListener{
            void onItemLongClick(View view,int position);
        }
        public void setOnItemLongClickListener(OnRecyclerItemLongListener listener){
            this.mOnItemLong =  listener;
        }
        @Override
        public boolean onLongClick(View view) {
            if(mOnItemLong != null){
                mOnItemLong.onItemLongClick(view,1);
            }
            return true;
        }
    
    
        //点击事件接口
        //define interface
        public static interface OnItemClickListener {
            void onItemClick(View view , int position);
        }
        public void setOnItemClickListener(OnItemClickListener listener) {
            this.mOnItemClickListener = listener;
        }
        @Override
        public void onClick(View view) {
            if (mOnItemClickListener != null) {
                //注意这里使用getTag方法获取position
                mOnItemClickListener.onItemClick(view,(int)view.getTag());
            }
        }
    
    
    
        public class ViewHolder extends RecyclerView.ViewHolder{
            public SimpleDraweeView img;
            public TextView tv,tv2;
            public ViewHolder(View itemView) {
                super(itemView);
                img=itemView.findViewById(R.id.img);
                tv=itemView.findViewById(R.id.tv1);
                tv2=itemView.findViewById(R.id.tv2);
            }
        }
    }

    //适配器布局

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        xmlns:fresco="http://schemas.android.com/apk/res-auto"
    
        android:orientation="vertical"
        android:layout_height="wrap_content">
        <com.facebook.drawee.view.SimpleDraweeView
            android:scaleType="fitXY"
            android:padding="10dp"
            android:id="@+id/img"
            android:src="@mipmap/ic_launcher_round"
            android:layout_width="120dp"
            android:layout_height="120dp"
            fresco:viewAspectRatio="1.33"/>
        <!--<!– other attributes –>-->
    
    
        <LinearLayout
            android:orientation="vertical"
            android:layout_width="match_parent"
            android:layout_height="match_parent">
            <TextView
                android:id="@+id/tv1"
                android:padding="10dp"
                android:text="成都"
                android:textSize="20sp"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />
            <TextView
                android:id="@+id/tv2"
                android:padding="10dp"
                android:textSize="20sp"
                android:text="二货_无法长大"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />
        </LinearLayout>
    </LinearLayout>

    //主Activity

    public class MainActivity extends FragmentActivity implements MainActivityViewListener{
        private ListPresenter presenter;
        private List<Bean.RetBean.ListBean>list;
        private RecyclerView thirdRecyclerview;
        private MyAdapter myAdapter;
        //下载
        private int max;
        private TextView total;
        private ProgressBar mProgressBar;
        private DownloadUtil mDownloadUtil;
        private static final String TAG = MainActivity.class.getSimpleName();
        private String urlString;
        //长度
        private Handler handler = new Handler();
        int pro=0;
    
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            Fresco.initialize(this);
            setContentView(R.layout.activity_main);
            initView();
            urlString = "http://phonemovie.ks3-cn-beijing.ksyun.com/image/2017/10/16/1508141676941055287.jpg";
            String localPath = Environment.getExternalStorageDirectory()
                    .getAbsolutePath() + "/local";
            mDownloadUtil = new DownloadUtil(2, localPath, "ab.jpg", urlString,
                    this);
            mDownloadUtil.setOnDownloadListener(new DownloadUtil.OnDownloadListener() {
                @Override
                public void downloadStart(int fileSize) {
                    // TODO Auto-generated method stub
                    Log.w(TAG, "fileSize::" + fileSize);
                    max = fileSize;
                    mProgressBar.setMax(fileSize);
                }
                @Override
                public void downloadProgress(int downloadedSize) {
                    Log.w(TAG, "Compelete::" + downloadedSize);
                    mProgressBar.setProgress(downloadedSize);
                    total.setText((int) downloadedSize * 100 / max + "%");
                }
                @Override
                public void downloadEnd() {
                    Log.w(TAG, "ENd");
                }
            });
        }
        private void initView() {
            thirdRecyclerview = findViewById(R.id.third_recyclerview);
            thirdRecyclerview.setLayoutManager(new LinearLayoutManager(this));
            myAdapter=new MyAdapter(MainActivity.this,list);
            presenter = new ListPresenter(this);
            thirdRecyclerview.setAdapter(myAdapter);
            presenter.loadList();
            myAdapter.setOnItemClickListener(new MyAdapter.OnItemClickListener() {
                @Override
                public void onItemClick(View view, int position) {
                    mDownloadUtil.start();
                    handler.post(runnable); //开始执行
    
                    Toast.makeText(MainActivity.this,"开始",Toast.LENGTH_LONG).show();
                }
            });
            myAdapter.setOnItemLongClickListener(new MyAdapter.OnRecyclerItemLongListener() {
                @Override
                public void onItemLongClick(View view, int position) {
                    mDownloadUtil.pause();
                    Toast.makeText(MainActivity.this,"暂停",Toast.LENGTH_LONG).show();
                }
            });
    
    
    
            //下载
            total= (TextView) findViewById(R.id.textView);
            mProgressBar= (ProgressBar) findViewById(R.id.progressBar);
        }
    
        //启动子线程进度完之后跳转
        Runnable runnable=new Runnable() {
            @Override
            public void run() {
                mProgressBar.setVisibility(View.VISIBLE);
                pro=mProgressBar.getProgress()+100;
                mProgressBar.setProgress(pro);
                //如果进度小于100,,则延迟1000毫秒后重复执行runnable
                if(pro<100){
                    handler.postDelayed(runnable, 100);
                }else{
                    mProgressBar.setVisibility(View.GONE);
                    startActivity(new Intent(MainActivity.this, Main2Activity.class));
                    handler.removeCallbacks(runnable);
                    mProgressBar.setProgress(0);
                }
            }
        };
        @Override
        public void ShowData(Bean bean) {
    
            myAdapter.setData(bean);
        }
    }

    //主布局

    <LinearLayout
        android:orientation="vertical"
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
        android:layout_height="match_parent" tools:context="com.bawei.mythetests.MainActivity">
    
       <android.support.v7.widget.RecyclerView
           android:layout_width="match_parent"
           android:layout_weight="1"
           android:layout_height="match_parent"
           android:id="@+id/third_recyclerview"
    
         />
       <TextView
           android:id="@+id/textView"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:layout_alignParentLeft="true"
           android:layout_alignParentStart="true"
           android:layout_alignParentTop="true"
           android:layout_marginLeft="23dp"
           android:layout_marginStart="23dp"
           android:layout_marginTop="18dp"
           android:text="TextView" />
    
       <ProgressBar
           android:id="@+id/progressBar"
           style="?android:attr/progressBarStyleHorizontal"
           android:layout_width="fill_parent"
           android:layout_height="7.5dp"
           android:max="100"
           android:progress="100"
           android:layout_marginRight="8dp"
           android:layout_below="@+id/textView"
           android:visibility="visible"/>
    </LinearLayout>

    //接口

    public interface OnFinish {
        void finish(Bean bean);
    
    
    }

    //Main2类

    public class Main2Activity extends AppCompatActivity {
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main2);
            VideoView vv=(VideoView) findViewById(R.id.videoView1);
            //设置播放路径
            ///data/media/0/local/abc.MP4
            ///data/iToolsVMShare/minion_09.mp4
            vv.setVideoPath("data/media/0/local/abc.MP4");
            MediaController control=new MediaController(this);
            control.setMediaPlayer(vv);
            vv.setMediaController(control);
            //开始播放
            vv.start();
        }
    }

    //Main2布局

     <VideoView
            android:id="@+id/videoView1"
            android:layout_width="match_parent"
            android:layout_height="200dp"
    />

    //断点续传

    public class DownlaodSqlTool {
    
        private DownLoadHelper dbHelper;
        public DownlaodSqlTool(Context context){
            dbHelper=new DownLoadHelper(context);
    
        }
        /**
         * 创建下载的具体信息
         */
        public void insertInfos(List<DownloadInfo> infos) {
            SQLiteDatabase database = dbHelper.getWritableDatabase();
            for (DownloadInfo info : infos) {
                String sql = "insert into download_info(thread_id,start_pos, end_pos,compelete_size,url) values (?,?,?,?,?)";
                Object[] bindArgs = { info.getThreadId(), info.getStartPos(),
                        info.getEndPos(), info.getCompeleteSize(), info.getUrl() };
                database.execSQL(sql, bindArgs);
            }
        }
        /**
         * 得到下载具体信息
         */
        public List<DownloadInfo> getInfos(String urlstr) {
            List<DownloadInfo> list = new ArrayList<DownloadInfo>();
            SQLiteDatabase database = dbHelper.getWritableDatabase();
            String sql = "select thread_id, start_pos, end_pos,compelete_size,url from download_info where url=?";
            Cursor cursor = database.rawQuery(sql, new String[] { urlstr });
            while (cursor.moveToNext()) {
                DownloadInfo info = new DownloadInfo(cursor.getInt(0),
                        cursor.getInt(1), cursor.getInt(2), cursor.getInt(3),
                        cursor.getString(4));
                list.add(info);
            }
            return list;
        }
    
        /**
         * 更新数据库中的下载信息
         */
        public void updataInfos(int threadId, int compeleteSize, String urlstr) {
            SQLiteDatabase database = dbHelper.getWritableDatabase();
            String sql = "update download_info set compelete_size=? where thread_id=? and url=?";
            Object[] bindArgs = { compeleteSize, threadId, urlstr };
            database.execSQL(sql, bindArgs);
        }
        /**
         * 关闭数据库
         */
        public void closeDb() {
            dbHelper.close();
        }
    
        /**
         * 下载完成后删除数据库中的数据
         */
        public void delete(String url) {
            SQLiteDatabase database = dbHelper.getWritableDatabase();
            database.delete("download_info", "url=?", new String[] { url });
        }
    }

    //断点续传

    public class DownLoadHelper extends SQLiteOpenHelper {
        private static final String SQL_NAME = "download.db";
        private static final int DOWNLOAD_VERSION=1;
        public DownLoadHelper(Context context) {
            super(context, SQL_NAME, null, DOWNLOAD_VERSION);
        }
    
        @Override
        public void onCreate(SQLiteDatabase db) {
            db.execSQL("create table download_info(_id integer PRIMARY KEY AUTOINCREMENT, thread_id integer, "
                    + "start_pos integer, end_pos integer, compelete_size integer,url char)");
        }
    
        @Override
        public void onUpgrade(SQLiteDatabase sqLiteDatabase, int i, int i1) {
    
        }
    }

    //断点续传

    public class DownloadHttpTool {
        /**
         *
         * 利用Http协议进行多线程下载具体实践类
         */
        private static final String TAG = DownloadHttpTool.class.getSimpleName();
        private int threadCount;//线程数量
        private String urlstr;//URL地址
        private Context mContext;
        private Handler mHandler;
        private List<DownloadInfo> downloadInfos;//保存下载信息的类
        private String localPath;//目录
        private String fileName;//文件名
        private int fileSize;
        private DownlaodSqlTool sqlTool;//文件信息保存的数据库操作类
        private enum Download_State {
            Downloading, Pause, Ready;//利用枚举表示下载的三种状态
        }
        private Download_State state = Download_State.Ready;//当前下载状态
    
        private int globalCompelete = 0;//所有线程下载的总数
    
        public DownloadHttpTool(int threadCount, String urlString,
                                String localPath, String fileName, Context context, Handler handler) {
            super();
            this.threadCount = threadCount;
            this.urlstr = urlString;
            this.localPath = localPath;
            this.mContext = context;
            this.mHandler = handler;
            this.fileName = fileName;
            sqlTool = new DownlaodSqlTool(mContext);
        }
    
        //在开始下载之前需要调用ready方法进行配置
        public void ready() {
            Log.w(TAG, "ready");
            globalCompelete = 0;
            downloadInfos = sqlTool.getInfos(urlstr);
            if (downloadInfos.size() == 0) {
                initFirst();
            } else {
                File file = new File(localPath + "/" + fileName);
                if (!file.exists()) {
                    sqlTool.delete(urlstr);
                    initFirst();
                } else {
                    fileSize = downloadInfos.get(downloadInfos.size() - 1)
                            .getEndPos();
                    for (DownloadInfo info : downloadInfos) {
                        globalCompelete += info.getCompeleteSize();
                    }
                    Log.w(TAG, "globalCompelete:::" + globalCompelete);
                }
            }
        }
    
        public void start() {
            Log.w(TAG, "start");
            if (downloadInfos != null) {
                if (state == Download_State.Downloading) {
                    return;
                }
                state = Download_State.Downloading;
                for (DownloadInfo info : downloadInfos) {
                    Log.v(TAG, "startThread");
                    new DownloadThread(info.getThreadId(), info.getStartPos(),
                            info.getEndPos(), info.getCompeleteSize(),
                            info.getUrl()).start();
                }
            }
        }
    
        public void pause() {
            state = Download_State.Pause;
            sqlTool.closeDb();
        }
    
        public void delete(){
            compelete();
            File file = new File(localPath + "/" + fileName);
            file.delete();
        }
    
        public void compelete() {
            sqlTool.delete(urlstr);
            sqlTool.closeDb();
        }
    
        public int getFileSize() {
            return fileSize;
        }
    
        public int getCompeleteSize() {
            return globalCompelete;
        }
    
        //第一次下载初始化
        private void initFirst() {
            Log.w(TAG, "initFirst");
            try {
                URL url = new URL(urlstr);
                HttpURLConnection connection = (HttpURLConnection) url
                        .openConnection();
                connection.setConnectTimeout(5000);
                connection.setRequestMethod("GET");
                fileSize = connection.getContentLength();
                Log.w(TAG, "fileSize::" + fileSize);
                File fileParent = new File(localPath);
                if (!fileParent.exists()) {
                    fileParent.mkdir();
                }
                File file = new File(fileParent, fileName);
                if (!file.exists()) {
                    file.createNewFile();
                }
                // 本地访问文件
                RandomAccessFile accessFile = new RandomAccessFile(file, "rwd");
                accessFile.setLength(fileSize);
                accessFile.close();
                connection.disconnect();
            } catch (Exception e) {
                e.printStackTrace();
            }
            int range = fileSize / threadCount;
            downloadInfos = new ArrayList<DownloadInfo>();
            for (int i = 0; i < threadCount - 1; i++) {
                DownloadInfo info = new DownloadInfo(i, i * range, (i + 1) * range
                        - 1, 0, urlstr);
                downloadInfos.add(info);
            }
            DownloadInfo info = new DownloadInfo(threadCount - 1, (threadCount - 1)
                    * range, fileSize - 1, 0, urlstr);
            downloadInfos.add(info);
            sqlTool.insertInfos(downloadInfos);
        }
        //自定义下载线程
        private class DownloadThread extends Thread {
    
            private int threadId;
            private int startPos;
            private int endPos;
            private int compeleteSize;
            private String urlstr;
            private int totalThreadSize;
    
            public DownloadThread(int threadId, int startPos, int endPos,
                                  int compeleteSize, String urlstr) {
                this.threadId = threadId;
                this.startPos = startPos;
                this.endPos = endPos;
                totalThreadSize = endPos - startPos + 1;
                this.urlstr = urlstr;
                this.compeleteSize = compeleteSize;
            }
    
            @Override
            public void run() {
                HttpURLConnection connection = null;
                RandomAccessFile randomAccessFile = null;
                InputStream is = null;
                try {
                    randomAccessFile = new RandomAccessFile(localPath + "/"
                            + fileName, "rwd");
                    randomAccessFile.seek(startPos + compeleteSize);
                    URL url = new URL(urlstr);
                    connection = (HttpURLConnection) url.openConnection();
                    connection.setConnectTimeout(5000);
                    connection.setRequestMethod("GET");
                    connection.setRequestProperty("Range", "bytes="
                            + (startPos + compeleteSize) + "-" + endPos);
                    is = connection.getInputStream();
                    byte[] buffer = new byte[1024];
                    int length = -1;
                    while ((length = is.read(buffer)) != -1) {
                        randomAccessFile.write(buffer, 0, length);
                        compeleteSize += length;
                        Message message = Message.obtain();
                        message.what = threadId;
                        message.obj = urlstr;
                        message.arg1 = length;
                        mHandler.sendMessage(message);
                        sqlTool.updataInfos(threadId, compeleteSize, urlstr);
                        Log.w(TAG, "Threadid::" + threadId + "    compelete::"
                                + compeleteSize + "    total::" + totalThreadSize);
                        if (compeleteSize >= totalThreadSize) {
                            break;
                        }
                        if (state != Download_State.Downloading) {
                            break;
                        }
                    }
    
                } catch (Exception e) {
                    e.printStackTrace();
                } finally {
                    try {
                        if (is != null) {
                            is.close();
                        }
                        randomAccessFile.close();
                        connection.disconnect();
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }
        }
    }

    //断点续传

    public class DownloadInfo {
        /**
         * 保存每个下载线程下载信息类
         * 
         */
        private int threadId;// 下载器id
        private int startPos;// 开始点
        private int endPos;// 结束点
        private int compeleteSize;// 完成度
        private String url;// 下载文件的URL地址
        public DownloadInfo(int threadId, int startPos, int endPos,
                int compeleteSize, String url) {
            this.threadId = threadId;
            this.startPos = startPos;
            this.endPos = endPos;
            this.compeleteSize = compeleteSize;
            this.url = url;
        }
        public DownloadInfo() {
        }
    
        public String getUrl() {
            return url;
        }
    
        public void setUrl(String url) {
            this.url = url;
        }
    
        public int getThreadId() {
            return threadId;
        }
    
        public void setThreadId(int threadId) {
            this.threadId = threadId;
        }
    
        public int getStartPos() {
            return startPos;
        }
    
        public void setStartPos(int startPos) {
            this.startPos = startPos;
        }
    
        public int getEndPos() {
            return endPos;
        }
    
        public void setEndPos(int endPos) {
            this.endPos = endPos;
        }
    
        public int getCompeleteSize() {
            return compeleteSize;
        }
    
        public void setCompeleteSize(int compeleteSize) {
            this.compeleteSize = compeleteSize;
        }
    
        @Override
        public String toString() {
            return "DownloadInfo [threadId=" + threadId + ", startPos=" + startPos
                    + ", endPos=" + endPos + ", compeleteSize=" + compeleteSize
                    + "]";
        }
    }

    //断点续传

    public class DownloadUtil {
     
        private DownloadHttpTool mDownloadHttpTool;
        private OnDownloadListener onDownloadListener;
     
        private int fileSize;
        private int downloadedSize = 0;
     
        @SuppressLint("HandlerLeak")
        private Handler mHandler = new Handler() {
     
            @Override
            public void handleMessage(Message msg) {
                // TODO Auto-generated method stub
                super.handleMessage(msg);
                int length = msg.arg1;
                synchronized (this) {//加锁保证已下载的正确性
                    downloadedSize += length;
                }
                if (onDownloadListener != null) {
                    onDownloadListener.downloadProgress(downloadedSize);
                }
                if (downloadedSize >= fileSize) {
                    mDownloadHttpTool.compelete();
                    if (onDownloadListener != null) {
                        onDownloadListener.downloadEnd();
                    }
                }
            }
     
        };
     
        public DownloadUtil(int threadCount, String filePath, String filename,
                String urlString, Context context) {
     
            mDownloadHttpTool = new DownloadHttpTool(threadCount, urlString,
                    filePath, filename, context, mHandler);
        }
    
    
    
        //下载之前首先异步线程调用ready方法获得文件大小信息,之后调用开始方法
        public void start() {
            new AsyncTask<Void,Void,Void>() {
     
                @Override
                protected Void doInBackground(Void... arg0) {
                    // TODO Auto-generated method stub
                    mDownloadHttpTool.ready();
                    return null;
                }
     
                @Override
                protected void onPostExecute(Void result) {
                    // TODO Auto-generated method stub
                    super.onPostExecute(result);
                    fileSize = mDownloadHttpTool.getFileSize();
                    downloadedSize = mDownloadHttpTool.getCompeleteSize();
                    Log.w("Tag", "downloadedSize::" + downloadedSize);
                    if (onDownloadListener != null) {
                        onDownloadListener.downloadStart(fileSize);
                    }
                    mDownloadHttpTool.start();
                }
            }.execute();
        }
     
        public void pause() {
            mDownloadHttpTool.pause();
        }
         
        public void delete(){
            mDownloadHttpTool.delete();
        }
     
        public void reset(){
            mDownloadHttpTool.delete();
            start();
        }
         
        public void setOnDownloadListener(OnDownloadListener onDownloadListener) {
            this.onDownloadListener = onDownloadListener;
        }
     
        //下载回调接口
        public interface OnDownloadListener {
            public void downloadStart(int fileSize);
     
            public void downloadProgress(int downloadedSize);//记录当前所有线程下总和
     
            public void downloadEnd();
        }
    }

    //权限

     <uses-sdk
            android:minSdkVersion="8"
            android:targetSdkVersion="18" />
    
        <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
        <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
        <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
        <uses-permission android:name="android.permission.INTERNET"/>

    //依赖

    compile 'com.android.support:appcompat-v7:26.+'
        compile 'com.android.support.constraint:constraint-layout:1.0.2'
        compile 'com.squareup.retrofit2:retrofit:2.0.1'
        compile 'com.squareup.retrofit2:converter-gson:2.0.1'
        compile 'com.squareup.retrofit2:adapter-rxjava:2.0.1'
        compile 'io.reactivex:rxandroid:1.1.0'
        compile 'com.squareup.okhttp3:logging-interceptor:3.4.1'
        compile 'com.android.support:recyclerview-v7:26.+'
        compile 'com.facebook.fresco:fresco:0.9.0+'
        compile 'com.jakewharton:butterknife:8.8.1'
        testCompile 'junit:junit:4.12'
        annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
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  • 原文地址:https://www.cnblogs.com/yu12/p/7877917.html
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