Go to ParentHow to use app to detect when otg cable is plugged in and when it's plugged out? Is there intent for otg cable like this for usb devices: "android.hardware.usb.action.USB_DEVICE_ATTACHED" I have created app like this but I only detects flash drive not otg cable:
public class MainActivity extends AppCompatActivity
{
private TextView mInfo;
private Logger mLogger;
private HashMap mHashMap = new HashMap();
private UsbManager mUsbManager;
private PendingIntent mPermissionIntent;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity\_main);
mInfo = (TextView)findViewById(R.id.log);
mLogger = new Logger(this);
mLogger.setMode(Logger.MODE\_TOAST);
mUsbManager = (UsbManager) getSystemService(Context.USB\_SERVICE);
usbConnection();
}
private void usbConnection() {
IntentFilter filter = new IntentFilter(UsbManager.ACTION\_USB\_DEVICE\_ATTACHED);
registerReceiver(mUsbAttachReceiver , filter);
filter = new IntentFilter(UsbManager.ACTION\_USB\_DEVICE\_DETACHED);
registerReceiver(mUsbDetachReceiver , filter);
mPermissionIntent = PendingIntent.getBroadcast(this, 0, new Intent(ACTION\_USB\_PERMISSION), 0);
filter = new IntentFilter(ACTION\_USB\_PERMISSION);
registerReceiver(mUsbReceiver, filter);
showDevices();
}
protected void onDestroy() {
super.onDestroy();
unregisterReceiver(mUsbDetachReceiver);
unregisterReceiver(mUsbAttachReceiver);
unregisterReceiver(mUsbReceiver);
};
BroadcastReceiver mUsbDetachReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (UsbManager.ACTION\_USB\_DEVICE\_DETACHED.equals(action)) {
UsbDevice device = (UsbDevice)intent.getParcelableExtra(UsbManager.EXTRA\_DEVICE);
if (device != null) {
// call your method that cleans up and closes communication with the device
UsbDataBinder binder = mHashMap.get(device);
if (binder != null) {
binder.onDestroy();
mHashMap.remove(device);
Toast.makeText(MainActivity.this, "Attached!"
