答案 0 :(得分:2)
public class CustomView extends View{
public onDraw(Canvas canvas){
// Take paint object
Paint fillBackgroundPaint = new Paint();
fillBackgroundPaint.setColor(ContextCompat.getColor(context, R.color.black));
// Draw lines and Rectangles by using the below methods on canvas
canvas.drawLine()
canvas.drawRect()
}
}