Android开发之canvas划线

主要代码:

package com.example.myapplication;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.view.View;

public  class MyView extends View{
    
    

    public MyView(Context context){
    
    
        super(context);
    }

    protected void onDraw(Canvas canvas){
    
    

        Paint paint=new Paint();
        paint.setColor(Color.BLUE);
        canvas.drawLine(0,0,200,200,paint);
        super.onDraw(canvas);
    }

}