繪製點_矩形_線

 畫板：繪製畫面

創建一個類，這個類繼承View類

在onDraw()方法中繪製

public class MyGridView extends 

View{

    public MyGridView(Context 

context){

            super(context);

            // TODO Auto-generated 

constructor stub

        }

        @Override

        protected void onDraw

(Canvas canvas){

             // TODO Auto-generated 

method stub

             super.onDraw(canvas);

             Paint shapePaint = new 

Paint();

            //設置寬度

            

shapePaint.setStrokeWidth(2);

            canvas.drawPoint

(20,20,shapePaint);

            canvas.drawLine

(20,30,20,70,shapePaint);

            canvas.drawRect

(20,80,140,shapePaint);

            //畫空心矩形

            shapePaint.setStyle

(Paint.Style.STROKE);

            canvas.drawRect

(20,150,80,200,shapePaint);

             Rect path = new Path

();

             shapePaint.setColor

(Color.GREEN);

             path.addCircle

(150,200,50,Direction.CW);

            

             canvas.drawPath

(path,shapePaint);                  

  shapePaint.setTextSize(18);

             

shapePaint.setFakeBoldText(true);

             canvas.drawTextOnPath

("Welcome to my home!",path, 0, 

10,shapePaint);

        }

}