i have made an application in which i need to change the drawable of an overlayitem when a user clicks on it. i am using the following code to achieve this effect:
I see a lot of answers here doing this the hard way. If you have 2 images and you want to flip them based on focus, do it the easy way:
Step 1: Copy both images into a drawables folder:
Example: mycon_focused.png, mycon.png
Step 2: Create a selector xml file in drawables: Example "marker.xml"
Step 3: When you create your ItemOverlay and add the OverlayItems drawable, use
getResources().getDrawable(R.drawable.marker);
instead of
getResources().getDrawable(R.drawable.mycon);
and then programically changing it in the on tap method. After reading through many answers and not seeing this anywhere I just tried it myself, and it worked perfectly.
Much thanks to previous contributors, without your help I wouldn't have had a starting point.
Another note: If you're using Sherif elKhatib suggested code and your marker position is off try:
int width = marker.getIntrinsicWidth();
int height = marker.getIntrinsicHeight();
marker.setBounds(-(width/2),-height,(width/2),0);
instead of
marker.setBounds(0,0,marker.getIntrinsicWidth(),marker.getIntrinsicHeight());
This should center it perfectly.