Hello Rafal, I have this exact problem with my HTC Legend as well. I wrote a post here but it never appeared?? So far I have not been able to solve the issue and I don't know if its specific to the Legend. In a few days I receive my HTC Desire and will test with that.
If you close the Bluetooth socket while your are not stuck in the blocking read the stack should be OK. Its only when closing the socket when blocked in the read that the stack gets corrupted. Sadly the only way to break out of the blocking read is to close the socket! Please keep me posted if you find anything. Thanks, Serge On Apr 13, 1:05 pm, Rafał Grzybowski <[email protected]> wrote: > After Bluetooth connection is lost. Bluetooth stack on HTC Legend is > messed up. Nothing works till Bluetooth is turned off and on. Here is > the sample, the problem is blocking read on the thread but > InputStream.available call always returns 0 and cannot be used to > implement some ugly, busy-waiting workaround. > > package com.example.android.disconnectproblem; > > import java.io.IOException; > import java.io.InputStream; > import java.io.InvalidObjectException; > import java.io.OutputStream; > import java.util.UUID; > > import android.app.Activity; > import android.bluetooth.BluetoothAdapter; > import android.bluetooth.BluetoothDevice; > import android.bluetooth.BluetoothSocket; > import android.os.Bundle; > import android.os.Handler; > import android.os.Message; > import android.util.Log; > import android.view.View; > import android.view.View.OnClickListener; > import android.widget.ArrayAdapter; > import android.widget.Button; > import android.widget.ListView; > > public class MainActivity extends Activity { > private ArrayAdapter<String> messages = null; > private BluetoothAdapter adapter = null; > private BluetoothDevice device = null; > private BluetoothSocket socket = null; > private ConnectedThread thread = null; > > /** Called when the activity is first created. */ > @Override > public void onCreate(Bundle savedInstanceState) { > try { > super.onCreate(savedInstanceState); > super.setContentView(R.layout.main); > } > catch (Throwable throwable) { > } > } > > @Override > public void onStart () { > try > { > super.onStart(); > > // setup click handler > Button btnConnect = (Button) > super.findViewById(R.id.btnConnect); > btnConnect.setOnClickListener(new OnClickListener() { > public void onClick(View v) { > try { > MainActivity.this.doConnect(); > } > catch (Throwable throwable) { > MainActivity.this.handleThrowable("doConnect > failed", throwable); > } > } > }); > > Button btnDisconnect = (Button) > super.findViewById(R.id.btnDisconnect); > btnDisconnect.setOnClickListener(new OnClickListener() { > public void onClick(View v) { > try { > MainActivity.this.doDisconnect(); > } > catch (Throwable throwable) { > > MainActivity.this.handleThrowable("doDisconnect > failed", throwable); > } > } > }); > > // setup messages > this.messages = new ArrayAdapter<String>(this, > R.layout.message); > > ((ListView)super.findViewById(R.id.lstMessages)).setAdapter(this.messages); > } > catch (Throwable throwable) { > this.handleThrowable("onStart failed", throwable); > } > } > > private void doConnect () throws Throwable{ > if (this.adapter == null) { > this.adapter = BluetoothAdapter.getDefaultAdapter(); > this.addMessage("adapter retrieved"); > } > > if (this.device == null) { > this.device = adapter.getRemoteDevice("00:18:9A:01:3E:7E"); > this.addMessage("device retrieved"); > } > > if (this.socket != null) { > throw new InvalidObjectException("Socket already retrieved"); > } > else { > this.socket = > device.createRfcommSocketToServiceRecord(UUID.fromString("00001101-0000-100 > 0-8000-00805F9B34FB")); > this.addMessage("socket retrieved"); > } > > socket.connect(); > this.addMessage("connected"); > > this.thread = new ConnectedThread(this.socket); > this.thread.start(); > /* > InputStream input = socket.getInputStream(); > this.addMessage("input stream opened"); > > OutputStream output = socket.getOutputStream(); > this.addMessage("output stream opened"); > Thread.sleep(2000); > > output.close(); > this.addMessage("output stream closed"); > > input.close(); > this.addMessage("input stream closed"); > > socket.close (); > this.addMessage("closed"); > */ > } > > private void doDisconnect () throws Throwable { > this.thread.cancel(); > this.socket.close(); > this.socket = null; > } > private void addMessage (String message) { > this.messages.add(message); > } > > Handler addMessageHandler = new Handler(){ > @Override > public void handleMessage(Message msg) { > MainActivity.this.addMessage ((String)msg.obj); > } > }; > > protected void handleThrowable (String message, Throwable > throwable) { > if (Log.isLoggable( > "Disconnect Problem", > Log.ERROR) == false) { > return; > } > > Log.e( > "Disconnect Problem", > message, > throwable); > > String errorMessage = throwable.getMessage(); > > if (errorMessage == null) { > // no error message provided, display something > errorMessage = String.format( > "An error occurred %s", > throwable.getClass().getName()); > } > > this.addMessage(errorMessage); > } > > private class ConnectedThread extends Thread { > private final BluetoothSocket clientSocket; > private InputStream inStream; > private OutputStream outStream; > > public ConnectedThread(BluetoothSocket socket) { > Log.d("Disconnect Problem", "create ConnectedThread"); > clientSocket = socket; > InputStream tmpIn = null; > OutputStream tmpOut = null; > > // Get the BluetoothSocket input and output streams > try { > tmpIn = socket.getInputStream(); > tmpOut = socket.getOutputStream(); > } catch (IOException e) { > Log.e("Disconnect Problem", "temp sockets not > created", e); > } > > inStream = tmpIn; > outStream = tmpOut; > } > > private void releaseStreams () { > try { > if (this.outStream != null) { > this.outStream.close (); > this.sendMessage("output stream closed"); > this.outStream = null; > } > > if (this.inStream != null) { > this.inStream.close (); > this.sendMessage("input stream closed"); > this.inStream = null; > } > } > catch (Exception exception) { > Log.e("Disconnect Problem", "releaseStreams", > exception); > } > } > > public void run() { > Log.i("Disconnect Problem", "BEGIN mConnectedThread"); > byte[] buffer = new byte[1024]; > int bytes; > > // Keep listening to the InputStream while connected > while (true) { > try { > // Read from the InputStream > bytes = inStream.read(buffer); > } catch (IOException e) { > Log.e("Disconnect Problem", "disconnected", e); > this.releaseStreams(); > this.sendMessage("connection lost"); > break; > } catch (Exception e) { > Log.e("Disconnect Problem", "diconnected", e); > this.releaseStreams(); > this.sendMessage("connection lost"); > break; > } > } > } > > public void cancel() { > try { > if (this.outStream != null) { > this.outStream.close (); > this.sendMessage("output stream closed - > cancelled"); > this.outStream = null; > } > > if (this.inStream != null) { > this.inStream.close (); > this.sendMessage("input stream closed - > cancelled"); > this.inStream = null; > } > > this.clientSocket.close(); > } catch (IOException e) { > Log.e("Disconnect Problem", "close() of connect socket > failed", e); > } > } > > private void sendMessage (String message) { > MainActivity.this.addMessageHandler.obtainMessage(1, > message).sendToTarget(); > } > } > > > > } -- You received this message because you are subscribed to the Google Groups "Android Developers" group. 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