UEventObserver runs its own thread, so make sure to trigger the volume

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.os.Handler;

import android.os.UEventObserver;

import android.os.PowerManager;

import android.os.PowerManager.WakeLock;

    private Context mContext;

    private Context mUiContext;

    private VolumePanel mVolumePanel;

    private Handler mHandler;

    private Runnable mVolumeChangeUiRunnable;

    private final WakeLock mWakeLock;  // held while there is a pending route change

            }

        });

        mHandler = new Handler();

        mVolumeChangeUiRunnable = new Runnable() {

            @Override

            public void run() {

                getVolumePanel().postVolumeChanged(AudioManager.STREAM_RING,AudioManager.FLAG_SHOW_UI | AudioManager.FLAG_VIBRATE);

            }

        };

        PowerManager pm = (PowerManager)context.getSystemService(Context.POWER_SERVICE);

        mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "RingerSwitchObserver");

        mWakeLock.setReferenceCounted(false);

                }

                // Raise UI

                getVolumePanel().postVolumeChanged(AudioManager.STREAM_RING,AudioManager.FLAG_SHOW_UI | AudioManager.FLAG_VIBRATE);

                mHandler.post(mVolumeChangeUiRunnable);

            } catch (RemoteException e) {

            }