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Android连接热点的Socket文件传输

news 来源：原创 2024/4/29 0:29:51

最近把测试丢过来的种种BUG解决后，终于有时间去研究研究Socket通信，再加上以前做的WiFi连接和热点开启，于是有了现在的这篇博文：创建热点发送文件，让另一台手机连接热点接收文件。

效果图：

两台设备是如何传输文件的：

  • 发送端->创建WiFi热点
  • 接收端->连接热点
  • 发送端->发送文件列表
  • 接收端->收到后展示文件列表，选择要接收的文件发送给发送端
  • 发送端->发送所选文件
  • 接收端->开始接收…

发送端->创建WiFi热点：

由于Android没有直接开启热点的API，所以我们这里采用反射。

/**
 * 开启便携热点
 * @param context 上下文
 * @param SSID 便携热点SSID
 * @param password 便携热点密码
 * @return */ public static boolean openAp(Context context, String SSID, String password) { if(TextUtils.isEmpty(SSID)) { return false; } WifiManager wifiManager = (WifiManager) context.getSystemService(context.WIFI_SERVICE); if (wifiManager.isWifiEnabled()) { wifiManager.setWifiEnabled(false); } WifiConfiguration wifiConfiguration = getApConfig(SSID, password); try { if(wifiManager.isWifiEnabled()) { //关闭WiFi wifiManager.setWifiEnabled(false); } if(isApOn(context)) { //关闭热点 closeAp(context); } //使用反射开启Wi-Fi热点 Method method = wifiManager.getClass().getMethod("setWifiApEnabled", WifiConfiguration.class, boolean.class); method.invoke(wifiManager, wifiConfiguration, true); return true; } catch (Exception e) { e.printStackTrace(); } return false; }

接收端->连接热点：

连接热点前先开启WiFi广播监听事件，然后开启WiFi，扫描周围可用WiFi列表，拿到SSID再进行连接，最后在WiFi广播监听事件中比较已连接WIFI的SSID是否正确。

WiFi广播监听事件：

/**
 * 注册监听WiFi操作的系统广播
 */
private void registerWifiReceiver() {
    IntentFilter filter = new IntentFilter(); //监听WiFi开启与关闭 filter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION); //监听扫描周围可用WiFi列表结果 filter.addAction(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); //监听WiFi连接与断开 filter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION); //注册广播 registerReceiver(mWifiBroadcaseReceiver, filter); } /** * 反注册WiFi相关的系统广播 */ private void unregisterWifiReceiver() { if (mWifiBroadcaseReceiver != null) { unregisterReceiver(mWifiBroadcaseReceiver); mWifiBroadcaseReceiver = null; } }

WiFi广播接收器：

public abstract class WifiBroadcaseReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { if(intent != null) { if(intent.getAction().equals(WifiManager.WIFI_STATE_CHANGED_ACTION)) { //监听WiFi开启/关闭事件 int wifiState = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE, 0); if(wifiState == WifiManager.WIFI_STATE_ENABLED) { //WiFi已开启 onWifiEnabled(); } else if(wifiState == WifiManager.WIFI_STATE_DISABLED) { //WiFi已关闭 onWifiDisabled(); } } else if(intent.getAction().equals(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)) { WifiMgr wifiMgr = new WifiMgr(context); List<ScanResult> scanResults = wifiMgr.getScanResults(); if(wifiMgr.isWifiEnabled() && scanResults != null && scanResults.size() > 0) { //成功扫描 onScanResultsAvailable(scanResults); } } else if(intent.getAction().equals(WifiManager.NETWORK_STATE_CHANGED_ACTION)) { //网络状态改变的广播 NetworkInfo info = intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO); if (info != null) { if (info.getState().equals(NetworkInfo.State.CONNECTED)) { //WiFi已连接 WifiMgr wifiMgr = new WifiMgr(context); String connectedSSID = wifiMgr.getConnectedSSID(); onWifiConnected(connectedSSID); } else if (info.getState().equals(NetworkInfo.State.DISCONNECTED)) { //WiFi已断开连接 onWifiDisconnected(); } } } } } public abstract void onWifiEnabled(); public abstract void onWifiDisabled(); public abstract void onScanResultsAvailable(List<ScanResult> scanResults); public abstract void onWifiConnected(String connectedSSID); public abstract void onWifiDisconnected(); }

打开和关闭WiFi：

mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);

/**
 * 打开WiFi
 */
public void openWifi() {
    if (!mWifiManager.isWifiEnabled()) { mWifiManager.setWifiEnabled(true); } } /** * 关闭WiFi */ public void closeWifi() { if (mWifiManager.isWifiEnabled()) { mWifiManager.setWifiEnabled(false); } /** * 当前WiFi是否开启 */ public boolean isWifiEnabled() { return mWifiManager.isWifiEnabled(); }

扫描周围可用WiFi列表：

/**
 * 扫描周围可用WiFi
 * @return
 */
public boolean startScan() { if(isWifiEnabled()) { return mWifiManager.startScan(); } return false; }

拿到WiFi扫描结果并且连接热点，当接收端连接成功后，会发一个UDP广播告知局域网内设备连接热点成功：

/**
 * WiFi广播接收器
 */
private WifiBroadcaseReceiver mWifiBroadcaseReceiver = new WifiBroadcaseReceiver() {
    @Override
    public void onWifiEnabled() { //WiFi已开启，开始扫描可用WiFi mWifiMgr.startScan(); } @Override public void onWifiDisabled() { //WiFi已关闭，清除可用WiFi列表 mSelectedSSID = ""; mScanResults.clear(); setupWifiAdapter(); } @Override public void onScanResultsAvailable(List<ScanResult> scanResults) { //扫描周围可用WiFi成功，设置可用WiFi列表 mScanResults.clear(); mScanResults.addAll(scanResults); setupWifiAdapter(); } @Override public void onWifiConnected(String connectedSSID) { //判断指定WiFi是否连接成功 if (connectedSSID.equals(mSelectedSSID) && !mIsSendInitOrder) { //连接成功 //告知发送端，接收端初始化完毕 mHandler.sendEmptyMessage(MSG_FILE_RECEIVER_INIT_SUCCESS); mIsSendInitOrder = true; } else { //连接成功的不是设备WiFi，清除该WiFi，重新扫描周围WiFi LogUtils.e("连接到错误WiFi，正在断开重连..."); mWifiMgr.disconnectWifi(connectedSSID); mWifiMgr.startScan(); } } @Override public void onWifiDisconnected() { } };

发送端->发送文件列表：

当发送端收到初始化完毕指令时，将用UDP广播发送文件列表。

/**
 * 等待接收端发送初始化完成指令，向其发送文件列表
 * @param serverPort
 * @throws Exception
 */
private void receiveInitSuccessOrder(int serverPort) throws Exception { //确保WiFi连接后获取正确IP地址 int tryCount = 0; String localIpAddress = ApMgr.getHotspotLocalIpAddress(getContext()); while (localIpAddress.equals(Consts.DEFAULT_UNKNOW_IP) && tryCount < Consts.DEFAULT_TRY_COUNT) { Thread.sleep(1000); localIpAddress = ApMgr.getHotspotLocalIpAddress(getContext()); tryCount ++; } /** 这里使用UDP发送和接收指令 */ mDatagramSocket = new DatagramSocket(serverPort); while (true) { byte[] receiveData = new byte[1024]; DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length); mDatagramSocket.receive(receivePacket); String response = new String(receivePacket.getData()).trim(); if(isNotEmptyString(response)) { LogUtils.e("接收到的消息 -------->>>" + response); if(response.equals(Consts.MSG_FILE_RECEIVER_INIT_SUCCESS)) { //初始化成功指令 mHandler.sendEmptyMessage(MSG_FILE_RECEIVER_INIT_SUCCESS); //发送文件列表 InetAddress inetAddress = receivePacket.getAddress(); int port = receivePacket.getPort(); //通过UDP发送文件列表给接收端 sendFileInfoListToFileReceiverWithUdp(inetAddress, port); } else if(response.equals(Consts.MSG_START_SEND)) { //开始发送指令 initSenderServer(); } else { //接收端发来的待发送文件列表 parseFileInfo(response); } } } } /** * 通过UDP发送文件列表给接收端 * @param ipAddress IP地址 * @param serverPort 端口号 */ private void sendFileInfoListToFileReceiverWithUdp(InetAddress ipAddress, int serverPort) { if(!isEmptyList(mAllFileInfos)) { String jsonStr = FileInfo.toJsonStr(mAllFileInfos); DatagramPacket sendFileInfoPacket = new DatagramPacket(jsonStr.getBytes(), jsonStr.getBytes().length, ipAddress, serverPort); try { //发送文件列表 mDatagramSocket.send(sendFileInfoPacket); LogUtils.i("发送消息 --------->>>" + jsonStr + "=== Success!"); mHandler.obtainMessage(MSG_SET_STATUS, "成功发送文件列表...").sendToTarget(); } catch (IOException e) { e.printStackTrace(); LogUtils.i("发送消息 --------->>>" + jsonStr + "=== 失败！"); } } }

接收端->选择文件，并告知发送端开始发送：

收到文件列表后，接收端会将文件列表展示在RecyclerView控件，通过选择需要接收的文件，点击“开始发送”按钮，将发送“开始发送”指令到发送端，开启端口进行文件接收。

/**
 * 设置接收文件列表适配器
 */
private void setupReceiveFilesAdapter() {
    List<Map.Entry<String, FileInfo>> fileInfos = AppContext.getAppContext().getReceiverFileInfoMap();
    Collections.sort(fileInfos, Consts.DEFAULT_COMPARATOR);
    //设置适配器 mReceiveFilesAdapter = new CommonAdapter<Map.Entry<String, FileInfo>>(getContext(), R.layout.item_files_selector, fileInfos) { @Override protected void convert(ViewHolder holder, Map.Entry<String, FileInfo> fileInfoMap, int position) { final FileInfo fileInfo = fileInfoMap.getValue(); //文件路径 holder.setText(R.id.tv_item_files_selector_file_path, fileInfo.getFilePath()); //文件大小 holder.setText(R.id.tv_item_files_selector_size, FileUtils.FormetFileSize(fileInfo.getSize())); //文件接收状态 if(fileInfo.getProgress() >= 100) { holder.setText(R.id.tv_item_files_selector_status, "接收完毕"); } else if(fileInfo.getProgress() == 0) { holder.setText(R.id.tv_item_files_selector_status, "准备接收"); } else if(fileInfo.getProgress() < 100) { holder.setText(R.id.tv_item_files_selector_status, "正在接收"); } else { holder.setText(R.id.tv_item_files_selector_status, "接收失败"); } //文件接收进度 ProgressBar progressBar = holder.getView(R.id.pb_item_files_selector); progressBar.setProgress(fileInfo.getProgress()); //选中文件 CheckBox checkBox = holder.getView(R.id.cb_item_files_selector); checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { if(isChecked) { mSendFileInfos.add(fileInfo); } else { mSendFileInfos.remove(fileInfo); } //选中的文件个数大于零才可点击底部按钮 btnSendFileList.setEnabled(mSendFileInfos.size() > 0); } }); } }; mReceiveFilesRecyclerView.setAdapter(mReceiveFilesAdapter); //设置ListView样式 mReceiveFilesRecyclerView.setLayoutManager(new LinearLayoutManager(getContext())); //分割线 mReceiveFilesRecyclerView.addItemDecoration(new DividerItemDecoration(getContext(), DividerItemDecoration.VERTICAL)); } /** * 发送选中的文件列表给发送端 */ private void sendFileListToFileSender() { new Thread() { @Override public void run() { try { //获取IP地址 String serverIp = mWifiMgr.getIpAddressFromHotspot(); if(mDatagramSocket == null) { //解决：java.net.BindException: bind failed: EADDRINUSE (Address already in use) mDatagramSocket = new DatagramSocket(null); mDatagramSocket.setReuseAddress(true); mDatagramSocket.bind(new InetSocketAddress(Consts.DEFAULT_SERVER_UDP_PORT)); } //发送选中的文件列表 InetAddress ipAddress = InetAddress.getByName(serverIp); String jsonStr = FileInfo.toJsonStr(mSendFileInfos); DatagramPacket sendPacket = new DatagramPacket(jsonStr.getBytes(), jsonStr.getBytes().length, ipAddress, Consts.DEFAULT_SERVER_UDP_PORT); mDatagramSocket.send(sendPacket); LogUtils.i("发送消息 ------->>>" + jsonStr); //发送开始发送文件指令 byte[] sendData = Consts.MSG_START_SEND.getBytes(BaseTransfer.UTF_8); DatagramPacket sendPacket2 = new DatagramPacket(sendData, sendData.length, ipAddress, Consts.DEFAULT_SERVER_UDP_PORT); mDatagramSocket.send(sendPacket2); LogUtils.i("发送消息 ------->>>" + sendData); } catch (Exception e) { e.printStackTrace(); } } }.start(); } /** * ServerSocket启动线程 */ private class ReceiveServerRunnable implements Runnable { @Override public void run() { try { //开始接收文件 String serverIp = mWifiMgr.getIpAddressFromHotspot(); List<Map.Entry<String, FileInfo>> fileInfoList = AppContext.getAppContext().getReceiverFileInfoMap(); Collections.sort(fileInfoList, Consts.DEFAULT_COMPARATOR); for(final Map.Entry<String, FileInfo> fileInfoMap : fileInfoList) { //连接发送端，逐个文件进行接收 final int position = fileInfoList.indexOf(fileInfoMap); mClientSocket = new Socket(serverIp, Consts.DEFAULT_FILE_RECEIVE_SERVER_PORT); FileReceiver fileReceiver = new FileReceiver(mClientSocket, fileInfoMap.getValue()); fileReceiver.setOnReceiveListener(new FileReceiver.OnReceiveListener() { @Override public void onStart() { mHandler.obtainMessage(MSG_SET_STATUS, "开始接收"+ FileUtils.getFileName(fileInfoMap.getValue().getFilePath())).sendToTarget(); } @Override public void onProgress(FileInfo fileInfo, long progress, long total) { //更新接收进度视图 int i_progress = (int) (progress * 100 / total); LogUtils.e("正在接收：" + fileInfo.getFilePath() + "\n当前进度：" + i_progress); Message msg = new Message(); msg.what = MSG_UPDATE_PROGRESS; msg.arg1 = position; msg.arg2 = i_progress; mHandler.sendMessage(msg); } @Override public void onSuccess(FileInfo fileInfo) { //接收成功 mHandler.obtainMessage(MSG_SET_STATUS, "文件：" + FileUtils.getFileName(fileInfo.getFilePath()) + "接收成功").sendToTarget(); fileInfo.setResult(FileInfo.FLAG_SUCCESS); AppContext.getAppContext().updateReceiverFileInfo(fileInfo); Message msg = new Message(); msg.what = MSG_UPDATE_PROGRESS; msg.arg1 = position; msg.arg2 = 100; mHandler.sendMessage(msg); } @Override public void onFailure(Throwable throwable, FileInfo fileInfo) { if(fileInfo != null) { //接收失败 mHandler.obtainMessage(MSG_SET_STATUS, "文件：" + FileUtils.getFileName(fileInfo.getFilePath()) + "接收失败").sendToTarget(); fileInfo.setResult(FileInfo.FLAG_FAILURE); AppContext.getAppContext().updateReceiverFileInfo(fileInfo); Message msg = new Message(); msg.what = MSG_UPDATE_PROGRESS; msg.arg1 = position; msg.arg2 = -1; mHandler.sendMessage(msg); } } }); //加入线程池执行 mFileReceiverList.add(fileReceiver); AppContext.getAppContext().MAIN_EXECUTOR.execute(fileReceiver); } } catch (Exception e) { e.printStackTrace(); } } }

文件接收线程：

public class FileReceiver extends BaseTransfer implements Runnable { /** * 接收文件的Socket的输入输出流 */ private Socket mSocket; private InputStream mInputStream; /** * 待接收的文件数据 */ private FileInfo mFileInfo; /** * 用来控制线程暂停、恢复 */ private final Object LOCK = new Object(); private boolean mIsPaused = false; /** * 设置未执行线程的不执行标识 */ private boolean mIsStop; /** * 该线程是否执行完毕 */ private boolean mIsFinish; /** * 文件接收监听事件 */ private OnReceiveListener mOnReceiveListener; public FileReceiver(Socket socket, FileInfo fileInfo) { mSocket = socket; mFileInfo = fileInfo; } /** * 设置接收监听事件 * @param onReceiveListener */ public void setOnReceiveListener(OnReceiveListener onReceiveListener) { mOnReceiveListener = onReceiveListener; } @Override public void run() { if(mIsStop) { return; } //初始化 try { if(mOnReceiveListener != null) { mOnReceiveListener.onStart(); } init(); } catch (Exception e) { e.printStackTrace(); LogUtils.i("FileReceiver init() ------->>> occur expection"); if(mOnReceiveListener != null) { mOnReceiveListener.onFailure(e, mFileInfo); } } //发送文件实体数据 try { parseBody(); } catch (Exception e) { e.printStackTrace(); LogUtils.i("FileReceiver parseBody() ------->>> occur expection"); if(mOnReceiveListener != null) { mOnReceiveListener.onFailure(e, mFileInfo); } } //文件传输完毕 try { finishTransfer(); } catch (Exception e) { e.printStackTrace(); LogUtils.i("FileReceiver finishTransfer() ------->>> occur expection"); if(mOnReceiveListener != null) { mOnReceiveListener.onFailure(e, mFileInfo); } } } @Override public void init() throws Exception { if(mSocket != null) { mInputStream = mSocket.getInputStream(); } } @Override public void parseBody() throws Exception { if(mFileInfo == null) { return; } long fileSize = mFileInfo.getSize(); OutputStream fos = new FileOutputStream(FileUtils.gerateLocalFile(mFileInfo.getFilePath())); byte[] bytes = new byte[BYTE_SIZE_DATA]; long total = 0; int len = 0; long sTime = System.currentTimeMillis(); long eTime = 0; while ((len = mInputStream.read(bytes)) != -1) { synchronized (LOCK) { if(mIsPaused) { try { LOCK.wait(); } catch (InterruptedException e) { e.printStackTrace(); } } //写入文件 fos.write(bytes, 0, len); total = total + len; //每隔200毫秒返回一次进度 eTime = System.currentTimeMillis(); if(eTime - sTime > 200) { sTime = eTime; if(mOnReceiveListener != null) { mOnReceiveListener.onProgress(mFileInfo, total, fileSize); } } } } //文件接收成功 if(mOnReceiveListener != null) { mOnReceiveListener.onSuccess(mFileInfo); } mIsFinish = true; } @Override public void finishTransfer() throws Exception { if(mInputStream != null) { try { mInputStream.close(); } catch (IOException e) { e.printStackTrace(); } } if(mSocket != null && mSocket.isConnected()) { try { mSocket.close(); } catch (IOException e) { e.printStackTrace(); } } } /** * 暂停接收线程 */ public void pause() { synchronized (LOCK) { mIsPaused = true; LOCK.notifyAll(); } } /** * 恢复接收线程 */ public void resume() { synchronized (LOCK) { mIsPaused = false; LOCK.notifyAll(); } } /** * 设置当前的接收任务不执行 */ public void stop() { mIsStop = true; } /** * 文件是否在接收中 * @return */ public boolean isRunning() { return !mIsFinish; } /** * 文件接收监听事件 */ public interface OnReceiveListener { void onStart(); void onProgress(FileInfo fileInfo, long progress, long total); void onSuccess(FileInfo fileInfo); void onFailure(Throwable throwable, FileInfo fileInfo); } }

 

发送端->发送所选文件：

收到接收端发来的文件列表和“开始发送”指令后，发送端将会把所选文件逐个发送给接收端。

/**
 * 初始化发送端服务，开始发送文件
 */
private void initSenderServer() {
    mSenderServerRunnable = new SenderServerRunnable(); new Thread(mSenderServerRunnable).start(); } /** * 文件发送线程 */ private class SenderServerRunnable implements Runnable { private ServerSocket mServerSocket; @Override public void run() { try { //获取待发送的文件列表数据，按position索引排序 List<Map.Entry<String, FileInfo>> fileInfoList = AppContext.getAppContext().getSendFileInfoMap(); Collections.sort(fileInfoList, Consts.DEFAULT_COMPARATOR); mServerSocket = new ServerSocket(Consts.DEFAULT_FILE_RECEIVE_SERVER_PORT); //逐个文件进行发送 for(final Map.Entry<String, FileInfo> fileInfoMap : fileInfoList) { final FileInfo fileInfo = fileInfoMap.getValue(); Socket socket = mServerSocket.accept(); FileSender fileSender = new FileSender(socket, fileInfo); fileSender.setOnSendListener(new FileSender.OnSendListener() { @Override public void onStart() { mHandler.obtainMessage(MSG_SET_STATUS, "开始发送"+ FileUtils.getFileName(fileInfo.getFilePath())).sendToTarget(); } @Override public void onProgress(long progress, long total) { //更新发送进度视图 int i_progress = (int) (progress * 100 / total); LogUtils.e("正在发送：" + fileInfo.getFilePath() + "\n当前进度：" + i_progress); Message msg = new Message(); msg.what = MSG_UPDATE_PROGRESS; msg.arg1 = fileInfo.getPosition(); msg.arg2 = i_progress; mHandler.sendMessage(msg); } @Override public void onSuccess(FileInfo fileInfo) { //发送成功 mHandler.obtainMessage(MSG_SET_STATUS, "文件：" + FileUtils.getFileName(fileInfo.getFilePath()) + "发送成功").sendToTarget(); fileInfo.setResult(FileInfo.FLAG_SUCCESS); AppContext.getAppContext().updateSendFileInfo(fileInfo); Message msg = new Message(); msg.what = MSG_UPDATE_PROGRESS; msg.arg1 = fileInfo.getPosition(); msg.arg2 = 100; mHandler.sendMessage(msg); } @Override public void onFailure(Throwable throwable, FileInfo fileInfo) { //发送失败 mHandler.obtainMessage(MSG_SET_STATUS, "文件：" + FileUtils.getFileName(fileInfo.getFilePath()) + "发送失败").sendToTarget(); fileInfo.setResult(FileInfo.FLAG_FAILURE); AppContext.getAppContext().updateSendFileInfo(fileInfo); Message msg = new Message(); msg.what = MSG_UPDATE_PROGRESS; msg.arg1 = fileInfo.getPosition(); msg.arg2 = -1; mHandler.sendMessage(msg); } }); //添加到线程池执行 mFileSenderList.add(fileSender); AppContext.FILE_SENDER_EXECUTOR.execute(fileSender); } } catch (IOException e) { e.printStackTrace(); } } /** * 关闭Socket连接 */ public void closeServerSocket() { if(mServerSocket != null) { try { mServerSocket.close(); mServerSocket = null; } catch (IOException e) { e.printStackTrace(); } } } }

文件发送线程：

public class FileSender extends BaseTransfer implements Runnable { /** * 待发送的文件数据 */ private FileInfo mFileInfo; /** * 传送文件的Socket输入输出流 */ private Socket mSocket; private OutputStream mOutputStream; /** * 用来控制线程暂停、恢复 */ private final Object LOCK = new Object(); private boolean mIsPause; /** * 该线程是否执行完毕 */ private boolean mIsFinish; /** * 设置未执行线程的不执行标识 */ private boolean mIsStop; /** * 文件传送监听事件 */ private OnSendListener mOnSendListener; public FileSender(Socket socket, FileInfo fileInfo) { mSocket = socket; mFileInfo = fileInfo; } /** * 设置发送监听事件 * @param onSendListener */ public void setOnSendListener(OnSendListener onSendListener) { mOnSendListener = onSendListener; } @Override public void run() { if(mIsStop) { return; } //初始化 try { if(mOnSendListener != null) { mOnSendListener.onStart(); } init(); } catch (Exception e) { e.printStackTrace(); LogUtils.i("FileSender init() ------->>> occur expection"); if(mOnSendListener != null) { mOnSendListener.onFailure(e, mFileInfo); } } //发送文件实体数据 try { parseBody(); } catch (Exception e) { e.printStackTrace(); LogUtils.i("FileSender parseBody() ------->>> occur expection"); if(mOnSendListener != null) { mOnSendListener.onFailure(e, mFileInfo); } } //文件传输完毕 try { finishTransfer(); } catch (Exception e) { e.printStackTrace(); LogUtils.i("FileSender finishTransfer() ------->>> occur expection"); if(mOnSendListener != null) { mOnSendListener.onFailure(e, mFileInfo); } } } @Override public void init() throws Exception { mSocket.setSoTimeout(30 * 1000); OutputStream os = mSocket.getOutputStream(); mOutputStream = new BufferedOutputStream(os); } @Override public void parseBody() throws Exception { long fileSize = mFileInfo.getSize(); File file = new File(mFileInfo.getFilePath()); InputStream fis = new FileInputStream(file); int len = 0; long total = 0; byte[] bytes = new byte[BYTE_SIZE_DATA]; long sTime = System.currentTimeMillis(); long eTime = 0; while ((len = fis.read(bytes)) != -1) { synchronized (LOCK) { if(mIsPause) { try { LOCK.wait(); } catch (InterruptedException e) { e.printStackTrace(); } } //写入文件 mOutputStream.write(bytes, 0, len); total += len; //每隔200毫秒返回一次进度 eTime = System.currentTimeMillis(); if(eTime - sTime > 200) { sTime = eTime; if(mOnSendListener != null) { mOnSendListener.onProgress(total, fileSize); } } } } //关闭Socket输入输出流 mOutputStream.flush(); mOutputStream.close(); //文件发送成功 if(mOnSendListener != null) { mOnSendListener.onSuccess(mFileInfo); } mIsFinish = true; } @Override public void finishTransfer() throws Exception { if(mOutputStream != null) { try { mOutputStream.close(); } catch (IOException e) { } } if(mSocket != null && mSocket.isConnected()) { try { mSocket.close(); } catch (IOException e) { e.printStackTrace(); } } } /** * 暂停发送线程 */ public void pause() { synchronized (LOCK) { mIsPause = true; LOCK.notifyAll(); } } /** * 恢复发送线程 */ public void resume() { synchronized (LOCK) { mIsPause = false; LOCK.notifyAll(); } } /** * 设置当前的发送任务不执行 */ public void stop() { mIsStop = true; } /** * 文件是否在发送中 * @return */ public boolean isRunning() { return !mIsFinish; } public interface OnSendListener { void onStart(); void onProgress(long progress, long total); void onSuccess(FileInfo fileInfo); void onFailure(Throwable throwable, FileInfo fileInfo); } }

因为懒，以上列出的只是部分核心代码，选择文件的功能也没去做，草草地在Activity中写死了几个文件去上传，具体代码可去Github下载运行，参见SendFilesActivity类，哈哈！

Github源码：https://github.com/WhoIsAA/SocketDemo

总结：

貌似第一次在博客中贴那么长的代码，关于Socket的知识还要学许多许多，而我懂的也只不过是入门的皮毛，以上Demo参考了以下大神博文及资料：

  • Android如何实现茄子快传
  • [Java TCP/IP Socket] — 单播、广播、组播
  • java socket传多个文件的疑问

转载于:https://www.cnblogs.com/Free-Thinker/p/7717412.html

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