Trying to draw a button: how to set a stroke color and how to “align” a gradient to the bottom without knowing the height?

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In terms of your first question, I struggled with this as well, and it doesn’t look like there are any suitable methods within Drawables themselves (I was using ShapeDrawable) or the Paint class. However, I was able to extend ShapeDrawable and override the draw method, as below, to give the same result:

public class CustomBorderDrawable extends ShapeDrawable {
    private Paint fillpaint, strokepaint;
    private static final int WIDTH = 3; 

    public CustomBorderDrawable(Shape s) {
        super(s);
        fillpaint = this.getPaint();
        strokepaint = new Paint(fillpaint);
        strokepaint.setStyle(Paint.Style.STROKE);
        strokepaint.setStrokeWidth(WIDTH);
        strokepaint.setARGB(255, 0, 0, 0);
    }

    @Override
    protected void onDraw(Shape shape, Canvas canvas, Paint fillpaint) {
        shape.draw(canvas, fillpaint);
        shape.draw(canvas, strokepaint);
    }

    public void setFillColour(int c){
        fillpaint.setColor(c);
    }
}

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