in the onDraw(Canvas canvas1) method i see how it is possible to draw shapes using the passed argument of "canvas1". However, if i were to create a new Canvas object example":
Canvas canvas2 = new Canvas();
Paint paint = new Paint();
paint.setColor(Color.BLUE);
canvas2.drawRect(55,87,130,600, paint);
canvas2 won't be displayed on screen, how can i get it displayed together with the canvas1 object?
When you create canvas using Canvas() constructor, your get an empty raster canvas.
As per documentation:
Construct an empty raster canvas. Use setBitmap() to specify a bitmap to draw into.
This means that your drawings are just thrown away unless you explicitly attach bitmap to Canvas object.
Are you trying to draw layers? Perhaps you need to use a viewgroup such as FrameLayout with two children views: one using canvas1, the other using canvas2.
I'm using custom ImageViews rendered in a FrameLayout as I explained in this thread.
