如何畫圓。How to draw a Circle. - 程序員論壇

Display display = _context.getDisplay();
int width = display.getHeight();
int height = display.getWidth();
Bitmap bitmap = Bitmap.createBitmap(height, height, Bitmap.Config.RGB_565);
g = new Canvas(bitmap);
g.drawColor(Color.WHITE);
g.drawBitmap(bitmap, 0F, 0F, null);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setDither(true);
paint.setColor(Color.BLUE);
paint.setStyle(Paint.Style.FILL);
paint.setStrokeJoin(Paint.Join.ROUND);
paint.setStrokeCap(Paint.Cap.ROUND);
paint.setAlpha(0xff);
paint.setStrokeWidth(1);
g.drawCircle(height/2, height/2, height/2, paint); //Put your values
// In order to display this image, we need to create a new ImageView that we can display.
ImageView imageView = new ImageView(_context);
// Set this ImageView's bitmap to ours
imageView.setImageBitmap(bitmap);
fLayout.addView(imageView);

複製代碼