[안드로이드 스튜디오] 기본 도형 그리기

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JAVA

package com.example.a09_11;

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

import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        MyView w = new MyView(this);
        setContentView(w);
    }
}

class MyView extends View {
    public MyView(Context context) {
        super(context);
        setBackgroundColor(Color.BLUE);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        Paint paint = new Paint();
        paint.setColor(Color.YELLOW);
        paint.setStrokeWidth(20);
        canvas.drawLine(100, 100, 700, 100, paint);
        canvas.drawRect(100, 300, 700, 700, paint);
        canvas.drawCircle(300, 1200, 200, paint);
        paint.setTextSize(80);
        canvas.drawText("This is a test.", 100, 900, paint);
    }
}

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package com.example.a09_11;

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

import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        MyView w = new MyView(this);
        setContentView(w);
    }
}

class MyView extends View {
    public MyView(Context context) {
        super(context);
        setBackgroundColor(Color.BLUE);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        Paint paint = new Paint();
        paint.setColor(Color.YELLOW);
        canvas.drawColor(Color.BLUE);
//        paint.setStrokeWidth(20);
//        canvas.drawLine(100, 100, 700, 100, paint);
//        canvas.drawRect(100, 300, 700, 700, paint);
//        canvas.drawCircle(300, 1200, 200, paint);
//        paint.setTextSize(80);
//        canvas.drawText("This is a test.", 100, 900, paint);

        canvas.drawRoundRect(new RectF(30,50,330,550), 15, 15, paint);
        canvas.drawOval(new RectF(450,50,750,550),paint);
        paint.setColor(Color.RED);
        canvas.drawArc(new RectF(30,600,330,1100),360,1000,true,paint);
        paint.setColor(Color.YELLOW);
        float[] pts = {30,1250,300,1350,300,1350,60,1450,60,1450,360,1500};
        paint.setStrokeWidth(10);
        canvas.drawLines(pts, paint);


    }
}

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