[HP Top] |
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 † |