[Android] Graphic

MainActivity.java

package com.example.graphic;

import androidx.appcompat.app.AppCompatActivity;

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

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(new MyGraphicView(this));
    }
    private static class MyGraphicView extends View {
        public MyGraphicView(Context context) {
            super(context);
        }

        @Override
        protected void onDraw(Canvas canvas) {
            super.onDraw(canvas);
            Paint paint = new Paint();
            paint.setAntiAlias(true);
            paint.setColor(Color.GREEN);
            canvas.drawLine(10, 10, 300, 10, paint);

            paint.setColor(Color.BLUE);
            paint.setStrokeWidth(5);
            canvas.drawLine(10, 30, 300, 30, paint);

            paint.setColor(Color.RED);
            paint.setStrokeWidth(0);

            paint.setStyle(Paint.Style.FILL);
            Rect rect1 = new Rect(10, 50, 10 + 100, 50 + 100);
            canvas.drawRect(rect1, paint);

            paint.setStyle(Paint.Style.STROKE);
            Rect rect2 = new Rect(130, 50, 130 + 100, 50 + 100);
            canvas.drawRect(rect2, paint);

            RectF rect3 = new RectF(250,50,250+100,50+100);
            canvas.drawRoundRect(rect3,20,20,paint);

            canvas.drawCircle(60,220,50,paint);

            paint.setStrokeWidth(5);
            Path path1 = new Path();
            path1.moveTo(10,290);
            path1.lineTo(10+50,290+50);
            path1.lineTo(10+100,290);
            path1.lineTo(10+150,290+50);
            path1.lineTo(10+200,290);
            canvas.drawPath(path1,paint);

            paint.setStrokeWidth(0);
            paint.setTextSize(30);
            canvas.drawText("안드로이드",10,390,paint);
        }
    }
}

 

배운 점

일반적으로 setContentView 함수 안에는 xml파일이 들어갔었는데 그래픽을 사용할 때는 MyGraphicView라는 클래스를 따로 만들어서 넣어주었다. 나머지 내용은 파이썬에서 거북이 움직이기와 비슷하다.

 

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