Getting error while Connecting Bluetooth
getting error when open Bluetooth Device
I am calling Methods Like this
findBT();
try {
Thread.currentThread();
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
openBT();
}
my code for finding pared Bluetooth device
void findBT () {
try {
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (mBluetoothAdapter == null) {
Toast.makeText(context, " No bluetooth adapter available ", Toast.LENGTH_LONG).show();
}
if (!mBluetoothAdapter.isEnabled()) {
Intent enableBluetooth = new Intent(
BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBluetooth, 0);
}
Set<BluetoothDevice> pairedDevices = mBluetoothAdapter
.getBondedDevices();
if (pairedDevices.size() > 0) {
for (BluetoothDevice device : pairedDevices) {
// MP300 is the name of the bluetooth printer device
if (device.getName().equals("AB-340M")) {
mmDevice = device;
break;
}
}
}
//Toast.makeText(context, "Found", Toast.LENGTH_LONG).show();
} catch (NullPointerException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
MY java code for Open Bluetooth Device
/*
* Tries to open a connection to the bluetooth printer device
*/
void openBT ()throws IOException {
try {
// Standard SerialPortService ID
UUID uuid = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
mmSocket = mmDevice.createRfcommSocketToServiceRecord(uuid);
mmSocket.connect();
mmOutputStream = mmSocket.getOutputStream();
mmInputStream = mmSocket.getInputStream();
beginListenForData();
//Toast.makeText(context, "OPEN", Toast.LENGTH_LONG).show();
} catch (NullPointerException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
Getting Error
07-08 13:22:44.710: W/BluetoothAdapter(9120): getBluetoothService() called with no BluetoothManagerCallback
07-08 13:22:44.937: W/System.err(9120): java.io.IOException: read failed, socket might closed or timeout, read ret: -1
07-08 13:22:44.953: W/System.err(9120): at android.bluetooth.BluetoothSocket.readAll(BluetoothSocket.java:1016)
07-08 13:22:44.953: W/System.err(9120): at android.bluetooth.BluetoothSocket.waitSocketSignal(BluetoothSocket.java:973)
07-08 13:22:44.953: W/System.err(9120): at android.bluetooth.BluetoothSocket.connect(BluetoothSocket.java:662)
07-08 13:22:44.953: W/System.err(9120): at com.clppl.project.SendChallan.openBT(SendChallan.java:343)
07-08 13:22:44.953: W/System.err(9120): at com.clppl.project.SendChallan$ApproveAdapter$2.onClick(SendChallan.java:229)
07-08 13:22:44.953: W/System.err(9120): at android.view.View.performClick(View.java:4452)
07-08 13:22:44.953: W/System.err(9120): at android.widget.Button.performClick(Button.java:148)
07-08 13:22:44.953: W/System.err(9120): at android.view.View$PerformClick.run(View.java:18428)
07-08 13:22:44.953: W/System.err(9120): at android.os.Handler.handleCallback(Handler.java:725)
07-08 13:22:44.953: W/System.err(9120): at android.os.Handler.dispatchMessage(Handler.java:92)
07-08 13:22:44.953: W/System.err(9120): at android.os.Looper.loop(Looper.java:176)
07-08 13:22:44.953: W/System.err(9120): at android.app.ActivityThread.main(ActivityThread.java:5365)
07-08 13:22:44.953: W/System.err(9120): at java.lang.reflect.Method.invokeNative(Native Method)
07-08 13:22:44.960: W/System.err(9120): at java.lang.reflect.Method.invoke(Method.java:511)
07-08 13:22:44.960: W/System.err(9120): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
07-08 13:22:44.960: W/System.err(9120): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
07-08 13:22:44.960: W/System.err(9120): at dalvik.system.NativeStart.main(Native Method)
Please Help Me how i can fix this problem
Thanks IN Advance
