How can I programmatically tell if a Bluetooth device is connected?
Add the Bluetooth permission to your AndroidManifest, <uses-permission android:name=”android.permission.BLUETOOTH” /> Then use intent filters to listen to the ACTION_ACL_CONNECTED, ACTION_ACL_DISCONNECT_REQUESTED, and ACTION_ACL_DISCONNECTED broadcasts: public void onCreate() { … IntentFilter filter = new IntentFilter(); filter.addAction(BluetoothDevice.ACTION_ACL_CONNECTED); filter.addAction(BluetoothDevice.ACTION_ACL_DISCONNECT_REQUESTED); filter.addAction(BluetoothDevice.ACTION_ACL_DISCONNECTED); this.registerReceiver(mReceiver, filter); } //The BroadcastReceiver that listens for bluetooth broadcasts private final BroadcastReceiver mReceiver = new BroadcastReceiver() { @Override … Read more