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Android getResource() undefined error

Posted by: admin June 15, 2020 Leave a comment


I want to draw bitmap on draw method in MyPositionOverlay extends Overlay class but I get this error: The method getResource() is undefined for the type MyPositionOverlay

Where I’m wrong?

Here is code form draw method:

  Bitmap bmp = BitmapFactory.decodeResource(getResource(), R.drawable.icon); 
     canvas.drawBitmap(bmp, screenPts.x, screenPts.y-50, null);


How to&Answers:

The getResources() method is not a member of the Overlay class. getResources() is a member of the Context class. You need to pass a reference of a Context to your Overlay subclass so that it can load the Drawable resource:

Bitmap bmp = BitmapFactory.decodeResource(context.getResources(), R.drawable.icon); 

You also don’t want to load a bitmap in your draw method as it is very memory intensive and will slow down your application, you should save a member variable of the bitmap in the constructor of the overlay so that it only gets loaded once.



   Bitmap bmp = BitmapFactory.decodeResource(this.getResources(), R.drawable.icon); 


Bitmap bmp = BitmapFactory.decodeResource(Context.getResources(), R.drawable.icon);