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POPassing Bluetooth device to a service, null getParcelableExtra
 

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  1. POPassing Bluetooth device to a service, null getParcelableExtra
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    <p>I am trying to maintain bluetooth connection when the screen is off. So I created an app that you can discover bluetooth devices around and choose from list. Then pass the chosen bluetooth device to backgroundService class which will handle the rest.But I am getting null pointer when I try to get device from intent. Any help will be appreciated.</p> <p>Here is my code segments</p> <pre><code> @Override public void onItemClick(AdapterView&lt;?&gt; arg0, View arg1, int arg2, long arg3) { if(btAdapter.isDiscovering()){ btAdapter.cancelDiscovery(); } if(listAdapter.getItem(arg2).contains("Paired")){ BluetoothDevice selectedDevice = devices.get(arg2); Intent intent = new Intent(this,backgroundService.class); if(selectedDevice == null) Log.i(backgroundService.EXTRA_MESSAGE, "I am telling you it is null"); intent.putExtra(backgroundService.EXTRA_MESSAGE, (Parcelable)selectedDevice); startService(intent); } else{ Toast.makeText(getApplicationContext(), "device is not paired", 0).show(); } } </code></pre> <p>I also populate devices as follows</p> <pre><code> receiver = new BroadcastReceiver(){ @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if(action.equals(BluetoothDevice.ACTION_FOUND)){ Log.i("onReceive", "ACTION_FOUND"); BluetoothDevice d = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); String s = "Not Paired"; devices.add(d); for(int a = 0; a &lt; pairedDevices.size(); a++){ if(d.getName().equals(pairedDevices.get(a).getName())){ //append s = "Paired"; break; } } listAdapter.add(d.getName()+"("+s+")\n"+ d.getAddress()); } </code></pre> <p>So devices list must already have parcelable devices. I am getting null device from following code</p> <pre><code>public int onStartCommand(Intent intent, int flags, int startId) { Log.i(EXTRA_MESSAGE,"onStartCommand"); BluetoothDevice selectedDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); if(selectedDevice == null) {Log.i(EXTRA_MESSAGE,"null it is "); return -1;} connect = new ConnectThread(selectedDevice); connect.start(); </code></pre>
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