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:
protected boolean onTap(int index) {
OverlayItem item = mOverlays.get(index);
if(item.getTitle().equals("true")){
if(item.getMarker(OverlayItem.ITEM_STATE_FOCUSED_MASK).equals(greenMarker)){
item.setMarker(orangeMarker);
view1ComplainPoleList.add(item.getSnippet());
Log.i("adding",item.getSnippet());
map.invalidate();
}
else{
item.setMarker(greenMarker);
view1ComplainPoleList.remove(item.getSnippet());
Log.i("removing",item.getSnippet());
map.invalidate();
}
}
return true;
}
But this does not seem to be working. whenever i click on an overlayitem it disappears from view. what is going wrong?
UPDATE:
could you also tell me how to load new views when the map is scrolled...?
thank you in advance.
Source: Tips4all, CCNA FINAL EXAM
This is very simple to do:
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OverlayItem item = mOverlays.get(index);
//Get the new Drawable
Drawable marker = mContext.getResources().getDrawable(R.drawable.icon);
//Set its bounds
marker.setBounds(0,0,marker.getIntrinsicWidth(),marker.getIntrinsicHeight());
//Set the new marker
item.setMarker(marker);
//Return true! Do not invalidate
return true;
}
I have no idea what view1ComplainPoleList is and whether it is impacting matters. I handled this by subclassing OverlayItem and overriding getMarker() to return the proper image. Here is the sample project in which I use this technique.
ReplyDelete