Android蓝牙发送文件问题

Question

我正在编写一个小程序,通过蓝牙在Android和PC之间发送文件.我已经阅读了谷歌android站点中的蓝牙聊天示例.

目前,我的版本通过蓝牙发送文本消息非常有效,但是当我发送一些文件时,大约> = 20 KB,它会停止工作并抛出EOFException,如下所示:

java.io.EOFException at java.io.ObjectInputStream$BlockDataInputStream.readFully(ObjectInputStream.java:2716)
    at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1665)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1340)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1963)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1887)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1770)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1346)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:368)
    at com.test.pcserver.BluetoothServerListener.run(BluetoothServerListener.java:74)
    at java.lang.Thread.run(Thread.java:636)

目前,我的PC程序在PC上使用 bluecove-2.1.0

这是我的主要代码:

在Android中:

// Get the BLuetoothDevice object
if (BluetoothAdapter.checkBluetoothAddress(address)) {
    device = mBtAdapter.getRemoteDevice(address);

        // Get a BluetoothSocket for a connection with the
    // given BluetoothDevice
    socket = device .createRfcommSocketToServiceRecord(ProgramConstants.BLUETOOTH_UUID);
    socket.connect();

        out = new ObjectOutputStream(socket.getOutputStream());

    // Send it to PC
    out.writeObject(contentObject);
    out.flush();        
}

在我的电脑中,我读到它:

PC版,服务器

StreamConnectionNotifier streamConnNotifier = null;

// Create the service url
String connectionString = "btspp://localhost:" + ProgramConstants.BLUETOOTH_UUID.toString()
                    + ";name=myappname";
// open server url
streamConnNotifier = (StreamConnectionNotifier) Connector.open(connectionString);

while (true) {
  // Wait for client connection
  StreamConnection connection = streamConnNotifier.acceptAndOpen();
  ObjectInputStream in = new ObjectInputStream(connection.openInputStream());
  RemoteDevice dev = RemoteDevice.getRemoteDevice(connection);

  // read string from spp client
  DataInController data = new DataInController(model);
  data.processDataIn(in.readObject(), dev.getBluetoothAddress());   
}

Answer 1

您需要在刷新输出流后添加

out.close();

否则流可能会损坏。