Android ImageView onClickListener won"t work

I am using a View Object named CameraView that implements View and uses a Hud-Object to create the HUD for a game. In this Hud-Class i use a LinearLayout to place ImageViews. I want these ImageViews to be clickable and to be able to fire some Code on Click. Thats why I use the onClickListener for each of the ImageViews. But it won't work at all.

Here is the specific Code of both classes:

CameraView

protected void onDraw(Canvas canvas) {

    //GameTimer

    hud.draw(canvas);



    // and make sure to redraw asap

    invalidate();

    }

HUD

public class Hud{

public TextElement gameTimer;

CameraView mCameraView;

private HashMap<Integer, Item> mItems = new HashMap<Integer, Item>();

private Integer mScreenWidth;

private Integer mScreenHeight;

//private ImageView imgView;

private HashMap<Integer, ImageView> imgViews = new HashMap<Integer, ImageView>();

private LinearLayout ll;



public Hud(CameraView cameraView){

    mCameraView = cameraView;



    mScreenWidth = mCameraView.screenWidth;

    mScreenHeight = mCameraView.screenHeight;



    //Get an instance of the GameTimer

    gameTimer = new TextElement("GameTimer", mScreenWidth/2, 25);



    //imgView = new ImageView(mCameraView.getContext());



    //We use a layout to contain the buttons (or any view)

    ll = new LinearLayout(mCameraView.getContext());

    ll.setOrientation(LinearLayout.HORIZONTAL);

}



public void updateGameTimer() {



    //update GameTimer

    long millis = System.currentTimeMillis() - mCameraView.startTime  ;

    int seconds = (int) (millis / 1000);

    int minutes = seconds / 60;

    seconds     = seconds % 60;

    gameTimer.setText(String.format("%d: %02d", minutes, seconds));



}



public void updateItems() {

    mItems = Simulation.items;



    ll = new LinearLayout(mCameraView.getContext());



    for (Item item : mItems.values()) {



        ImageView imgView = new ImageView(mCameraView.getContext());

        imgView.setImageBitmap(item.getImage());



        //We set the layout parameters

        LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(

             LinearLayout.LayoutParams.WRAP_CONTENT,  LinearLayout.LayoutParams.WRAP_CONTENT);



        //SET THE MARGIN HERE

        layoutParams.setMargins(30 , mScreenHeight - item.getImage().getHeight() - 20, 0, 0);



        imgView.setOnClickListener(new OnClickListener() {



            public void onClick(View v) {



                Log.d("ITEM", "PRESSED");

            }

        });



        //Add it to our linear layout

        ll.addView(imgView, layoutParams);



        //Measure and layout the linear layout before drawing it

        ll.measure(MeasureSpec.getSize(ll.getMeasuredWidth()), MeasureSpec.getSize(ll.getMeasuredHeight()));

        ll.layout(0, 0, MeasureSpec.getSize(imgView.getMeasuredWidth()), MeasureSpec.getSize(imgView.getMeasuredHeight()));





     imgViews.put(item.getIdentifier(), imgView);



    }



}



public void draw(Canvas canvas) {

    //GameTimer

    gameTimer.Draw(canvas);



    //Finally draw the linear layout on the canvas       

    ll.draw(canvas);



}





}

The Method HUD.updateItems() gets called by another class. i am certain of that, because i can see the item images, but i cant press them.

I hope anybody of you can help me with this. Thanks in advance.

CvD