What is wrong with my androidbutton with SensorEventListener? (Simple?)

Question

What I'm trying to do is if the user shakes the phone nothing happens. If then the user presses the button and shaking the phone plays a sound. When the user presses the button again the sound stops. This works the first time, but if the user does the same thing again can't the user stop the sound with a second click. The sound never stops.

locked = true / false, just to check if the button is pressed previously running = true / false, is to see if a sound is already playing and if so, do not start a new audio playback

Detect shaking using this code

Make Sound using this code

And this is my code with a button:

/* The SensorEventListener lets us wire up to the real hardware events */
private final SensorEventListener mySensorEventListener = new SensorEventListener() {

    public void onSensorChanged(SensorEvent se) {
        updateAccelParameters(se.values[0], se.values[1], se.values[2]); // (1)
        if ((!shakeInitiated) && isAccelerationChanged()) { // (2)
            shakeInitiated = true;
        } else if ((shakeInitiated) && isAccelerationChanged()
                && locked == true && running == false) { // (3)
            running = true;
            executeShakeAction();
        } else if ((shakeInitiated) && (!isAccelerationChanged())) { // (4)
            shakeInitiated = false;
        }
    }

    public void onAccuracyChanged(Sensor sensor, int accuracy) {
        /* can be ignored in this example */
    }
};

ImageButton.OnClickListener UnlockedButtonOnClickListener = new ImageButton.OnClickListener() {
    @Override
    public void onClick(View v) {
        //Locking
        if(locked == false){    
        unlocked.setImageResource(R.drawable.pink_locked);
        SoundManager.playSound(1, 1);
        locked = true;
        }else {
            //Unlocking
            SoundManager.stopSound(2); //stop the sound, working first time
            unlocked.setImageResource(R.drawable.blue_unlocked);
            SoundManager.playSound(3, 1);
            locked = false;
            running = false;


        }

    }
};