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());

}