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E/BluetoothSocket(5549): java.io.IOException: Operation Canceled
E/BluetoothSocket(5549): at android.bluetooth.BluetoothSocket.readNative(Native Method)
E/BluetoothSocket(5549): at android.bluetooth.BluetoothSocket.read(BluetoothSocket.java:386)
E/BluetoothSocket(5549): at android.bluetooth.BluetoothInputStream.read(BluetoothInputStream.java:96)
E/BluetoothSocket(5549): at java.io.InputStream.read(InputStream.java:163)
E/BluetoothSocket(5549): at com.adayome.hudsettingdemo.bt.BluetoothConnection$5.run(BluetoothConnection.java:335)
private class readThread extends Thread {
public void run() {
byte[] buffer = new byte[1024];
int bytes;
InputStream mmInStream = null;
try {
mmInStream = GlobalVariables.sSocket.getInputStream();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
while (!isInterrupted()) {
try {
// Read from the InputStream
if ((bytes = mmInStream.read(buffer)) > 0) {
byte[] buf_data = new byte[bytes];
for (int i = 0; i < bytes; i++) {
buf_data[i] = buffer[i];
}
String s = new String(buf_data);
LogUtils.i("readThread---------------2 s = " + s);
if (s.trim().equals("exit"))
break;
Message msg = new Message();
msg.obj = s;
msg.what = 1;
LinkDetectedHandler.sendMessage(msg);
}
} catch (IOException e) {
try {
mmInStream.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
break;
}
}
}
}
if (mReadThread != null) {
mReadThread.interrupt();
mReadThread = null;
}
if (GlobalVariables.sSocket != null) {
try {
InputStream in = GlobalVariables.sSocket.getInputStream();
OutputStream ou = GlobalVariables.sSocket.getOutputStream();
ou.close();
in.close();
GlobalVariables.sSocket.close();
} catch (IOException e) {
LogUtils.debugLog(e);
}
GlobalVariables.sSocket = null;
}
private class ReadThread extends Thread {
@Override
public void run() {
InputStream inStream = null;
while (isRunning) {
int size;
try {
byte[] buffer = new byte[1024];
try {
Thread.sleep(10);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
}
if (mSocket == null) {
break;
}
inStream = mSocket.getInputStream();
int available = inStream.available();
if (available != 0) {
size = inStream.read(buffer);
if (size > 0 && mListener != null) {
mListener.onDataReceived(buffer, size);
}
}
} catch (IOException e) {
try {
if (inStream != null)
inStream.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}catch (NullPointerException e){
LogUtils.e(e.getMessage());
}
}
LogUtils.i("-----ReadThread is exit");
closeSocket();
}
}
主要是利用
inStream = mSocket.getInputStream();
int available = inStream.available();
这段代码来判断是否有数据再去读取。