I've got a character in a 2D game using surfaceView that I want to be able to move using a button (eventually a joystick), but my game crashes as soon as I try to move my sprite. This is my onTouch-method for my steering button:

public void handleActionDown(int eventX, int eventY) {
    if (eventX >= (x - bitmap.getWidth() / 2) && (eventX <= (x + bitmap.getWidth()/2))) {
        if (eventY >= (y - bitmap.getHeight() / 2) && (y <= (y + bitmap.getHeight() / 2))) {                
            setTouched(true);
        } else {
            setTouched(false);
        }
    } else {
        setTouched(false);
    }

And if I try to put this in my update-method:

public void update() {      
    x += (speed.getXv() * speed.getxDirection()); 
    y += (speed.getYv() * speed.getyDirection());       
}

The sprite moves on its own just fine, but as soon as I add:

public void update() {
    if(steering.isTouched()){
        x += (speed.getXv() * speed.getxDirection()); 
        y += (speed.getYv() * speed.getyDirection());     
    }

the game crashes.

Does anyone know why this is or how to fix it? I cannot figure it out. I'm using MotionEvent.ACTION_DOWN to check if the user if pressing the screen.