Question

Im making a program using Java for android.
I’m drawing alot of rectangles on a bitmap using 4 lines connecting. ATM the lines are black and the background is white, i want to fill these “boxes” with colour and i cant figure out how to do it.
to change from drawing 4 lines into making a box from the start is not an option, i have to draw lines that form a box.
im thinking of something that takes an argument of x,y in the middle of the “box” and then filling it with pixles until it hits the edge of the box but i cant get it to work.
it needs to be reapeteble too, i have alot of boxes to fill.

im using android 2.1 with API 7

Answer 1

You can quite simply do this with a Path. It works as you’re talking about — move from point to point “drawing lines” — but when you’re done you can fill it.

Paint paint = new Paint();
paint.setStyle(Style.FILL);
// set other paint parameters, like color...
...

Path path = new Path();
path.moveTo(startX, startY);
path.lineTo(startX, startY + 50);
path.lineTo(startX+50, startY + 50);
path.lineTo(startX+50, startY);
canvas.drawPath(path, paint);