Zoom and Pinch RelativeLayout

I am new to android development, sorry if I ask some stupid question please try to help me. I am trying to implement the Zoom and pinch in RelativeLayout. I want to make my own map view in which I'll get the image of floor map and draw the pins(ImageVIew) on it. I've tried it out but i am currently unable to click on the pins. I've done the code with the help of these posts

Extending RelativeLayout, and overriding dispatchDraw() to create a zoomable ViewGroup

and

Android - zoom in/out RelativeLayout with spread/pinch

My Code is

public class TempView extends RelativeLayout {
private static final int INVALID_POINTER_ID = -1;

private Drawable mIcon;
private float mPosX;
private float mPosY;
TempView temp;
private float mLastTouchX;
private float mLastTouchY;
private int mActivePointerId = INVALID_POINTER_ID;

private ScaleGestureDetector mScaleDetector;
private float mScaleFactor = 1.f;

public TempView(Context context) {
    this(context, null, 0);
    temp = this;
}

public TempView(Context context, AttributeSet attrs) {
    this(context, attrs, 0);
    temp = this;
}

public TempView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    mIcon = context.getResources().getDrawable(R.drawable.ic_launcher);
    mIcon.setBounds(0, 0, mIcon.getIntrinsicWidth(), mIcon.getIntrinsicHeight());
    temp = this;
    mScaleDetector = new ScaleGestureDetector(context, new ScaleListener());
}

@Override
public boolean onTouchEvent(MotionEvent ev) {
    // Let the ScaleGestureDetector inspect all events.

    mScaleDetector.onTouchEvent(ev);



    final int action = ev.getAction();
    switch (action & MotionEvent.ACTION_MASK) {
    case MotionEvent.ACTION_DOWN: {
        final float x = ev.getX();
        final float y = ev.getY();

        mLastTouchX = x;
        mLastTouchY = y;
        mActivePointerId = ev.getPointerId(0);
        break;
    }

    case MotionEvent.ACTION_MOVE: {
        final int pointerIndex = ev.findPointerIndex(mActivePointerId);
        final float x = ev.getX(pointerIndex);
        final float y = ev.getY(pointerIndex);

        // Only move if the ScaleGestureDetector isn't processing a gesture.
        if (!mScaleDetector.isInProgress()) {
            final float dx = x - mLastTouchX;
            final float dy = y - mLastTouchY;

            mPosX += dx;
            mPosY += dy;

            invalidate();
        }

        mLastTouchX = x;
        mLastTouchY = y;

        break;
    }

    case MotionEvent.ACTION_UP: {
        mActivePointerId = INVALID_POINTER_ID;

        break;
    }

    case MotionEvent.ACTION_CANCEL: {
        mActivePointerId = INVALID_POINTER_ID;
        break;
    }

    case MotionEvent.ACTION_POINTER_UP: {
        final int pointerIndex = (ev.getAction() & MotionEvent.ACTION_POINTER_INDEX_MASK)
                >> MotionEvent.ACTION_POINTER_INDEX_SHIFT;
        final int pointerId = ev.getPointerId(pointerIndex);
        if (pointerId == mActivePointerId) {
            // This was our active pointer going up. Choose a new
            // active pointer and adjust accordingly.
            final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
            mLastTouchX = ev.getX(newPointerIndex);
            mLastTouchY = ev.getY(newPointerIndex);
            mActivePointerId = ev.getPointerId(newPointerIndex);
        }


        break;
    }
    }
   return true;
}

@Override
protected void onLayout(boolean changed, int l, int t, int r, int b)
{
    int count = getChildCount();
    Log.d("onLayout", ""+count);
    for(int i=0;i<count;i++){
        View child = getChildAt(i); 
        if(child.getVisibility()!=GONE ){
            RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams)child.getLayoutParams();
            child.layout(
                (int)(params.leftMargin * mScaleFactor), 
                (int)(params.topMargin * mScaleFactor), 
                (int)((params.leftMargin + child.getMeasuredWidth()) * mScaleFactor), 
                (int)((params.topMargin + child.getMeasuredHeight()) * mScaleFactor) 
                );


                child.setLayoutParams(params);
        }
    }
}




@Override
public void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    canvas.save(Canvas.MATRIX_SAVE_FLAG);
    canvas.translate(mPosX, mPosY);
    canvas.scale(mScaleFactor, mScaleFactor);
    Log.d("onDraw", ""+mScaleFactor);
    int count = getChildCount();
    for(int i=0;i<count;i++){
        View child = getChildAt(i); 
        if(child.getVisibility()!=GONE){
            child.draw(canvas);
            Log.d("onDraw", ""+mScaleFactor);
        }
    }

    canvas.restore();
}
@Override
protected void dispatchDraw(Canvas canvas) {
    canvas.save(Canvas.MATRIX_SAVE_FLAG);

    canvas.translate(mPosX, mPosY);
    canvas.scale(mScaleFactor, mScaleFactor);

    super.dispatchDraw(canvas);
    canvas.restore();
}

private class ScaleListener extends ScaleGestureDetector.SimpleOnScaleGestureListener {
    @Override
    public boolean onScale(ScaleGestureDetector detector) {
        mScaleFactor *= detector.getScaleFactor();

        // Don't let the object get too small or too large.
        mScaleFactor = Math.max(1.0f, Math.min(mScaleFactor, 5.0f));
       // Log.d("onScale", ""+mScaleFactor);
        temp.invalidate();
        invalidate();
        return true;
    }
}
}

Questions:

How to make Only Floor Map Image to zoom?
Keep Pins non-zoom but Move Relatively?
Get Accurate Click Event when clicked on a pin

Any Suggestions and Answers will be very much appriciated!

Thanks in Advance,

Qamar

An implementation of an HTML map like element in an Android View:

Supports images as drawable or bitmap in layout
Allows for a list of area tags in xml
Enables use of cut and paste HTML area tags to a resource xml (ie, the ability to take an HTML map - and image and use it with minimal editing)
Supports panning if the image is larger than the device screen
Supports pinch-zoom
Supports callbacks when an area is tapped.
Supports showing annotations as bubble text and provide callback if the bubble is tapped

see this link you will got your solution https://github.com/catchthecows/AndroidImageMap