MainActivity의 내부클래스로 CustomView 선언하기

Chap6. 인터페이스 기초03 - Custom View, Toast, Beep, Vibration, etc
패키지명 :chap6_prac

전체코드

• MainActivity.java

package ddwucom.mobile.chap6_prac;

import androidx.appcompat.app.AppCompatActivity;

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

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        MyView vw = new MyView(this);   //내부(아래)에 선언한 MyView 객체 생성
        setContentView(vw);
    }

    class MyView extends View {
        public MyView(Context context) {
            super(context);
        }

        public void onDraw(Canvas canvas) {
            canvas.drawColor(Color.LTGRAY);

            Paint pnt = new Paint();
            pnt.setColor(Color.BLUE);

            canvas.drawCircle(100,100,80,pnt);
        }
    }
}