For creating bar charts, you need to paint lines and color filled rectangles on the Canvas.
In the paint method of your Canvas, when yo want to draw the graph:
// Ox,Oy are origin's, Wx & Hy are total width & height of the graph
g.setColor(192,192,192); // Grey
g.drawLine(Ox,Oy,Wx+Ox,Oy); // x-axis
g.drawLine(Ox,Oy-Hy,Ox,Oy); // y-axis
// use setColor(which you want) and use fillRect(to draw diff bars)
// your values like 5000,6000,9050,10620 should be scaled down with ref. to Hy - say /100, and they become 50,60,90,106 if Hy is around 200