Backup of Android グラフィック (No. 11)

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  • 1 (2010-05-05 (Wed) 14:54:07)
  • 2 (2010-05-05 (Wed) 14:54:15)
  • 3 (2010-05-06 (Thu) 11:22:09)
  • 4 (2010-05-08 (Sat) 06:59:27)
  • 5 (2010-05-09 (Sun) 14:34:29)
  • 6 (2010-05-14 (Fri) 22:22:44)
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  • 8 (2010-05-21 (Fri) 22:20:28)
  • 9 (2010-05-23 (Sun) 18:37:25)
  • 10 (2010-06-12 (Sat) 17:19:53)
  • 11 (2011-08-21 (Sun) 08:39:22)

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MobileApp > Android > Graphic

様々なグラフィック描画機能 †

　　点を描く

　　直線を描く

　　長方形を描く

　　円を描く

　　楕円を描く

　　背景色

　　アンチエイリアス

　　画像の回転　　　　　ＲｏｔａｔｅＡｎｉｍａｔｉｏｎ

　　再描画　　　　　　　invalidate()

　　背景色　　　　　　　drawColor(Color.WHITE);

サンプルソース †

   protected void onDraw(Canvas canvas) {
       //描画オブジェクトの生成
       Paint paint=new Paint();
       paint.setAntiAlias(true);

       //ラインの描画
       paint.setStrokeWidth(1);
       paint.setStyle(Paint.Style.STROKE);
       paint.setColor(Color.argb(255,255,0,0));
       canvas.drawLine(25,5,25,5+40,paint);

    
       //パスの描画
       paint.setStyle(Paint.Style.STROKE);
       paint.setColor(Color.argb(255,255,0,0));
       Path path=new Path();
       path.moveTo(55+ 0,5+ 0);
       path.lineTo(55+30,5+ 5);
       path.lineTo(55+10,5+20);
       path.lineTo(55+40,5+25);
       path.lineTo(55+ 0,5+40);
       canvas.drawPath(path,paint);

       //四角形の描画
       paint.setStyle(Paint.Style.STROKE);
       paint.setColor(Color.argb(255,0,0,255));
       canvas.drawRect(new Rect(5+0,50+0,5+40,50+40),paint);        

 
       //四角形の塗り潰し
       paint.setStyle(Paint.Style.FILL);
       paint.setColor(Color.argb(255,0,0,255));
       canvas.drawRect(new Rect(55+0,50+0,55+40,50+40),paint);

       //角丸矩形の描画
       paint.setStyle(Paint.Style.STROKE);
       paint.setColor(Color.argb(255,0,255,0));
       canvas.drawRoundRect(new RectF(5+0,100+0,5+40,100+40),10,10,paint);         

  
       //角丸矩形の塗り潰し
       paint.setStyle(Paint.Style.FILL);
       paint.setColor(Color.argb(255,0,255,0));
       canvas.drawRoundRect(new RectF(55+0,100+0,55+40,100+40),10,10,paint); 

  
       //円の描画
       paint.setStyle(Paint.Style.STROKE);
       paint.setColor(Color.argb(255,255,255,0));
       canvas.drawCircle(25,170,20,paint);

       //円の塗り潰し
       paint.setStyle(Paint.Style.FILL);
       paint.setColor(Color.argb(255,255,255,0));
       canvas.drawCircle(75,170,20,paint);    

参考HP †

　　参考 - Android Docs(初級編)

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