如何将ColorDrawable转换为位图？

ColorDrawable colorDrawable = new ColorDrawable(Color.RED);

int color = colorDrawable.getColor();

Bitmap bitmap = Bitmap.createBitmap(colorDrawable.getIntrinsicWidth(), colorDrawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);

Canvas canvas = new Canvas(bitmap);

Paint paint = new Paint();
paint.setColor(color);
canvas.drawRect(0, 0, colorDrawable.getIntrinsicWidth(), colorDrawable.getIntrinsicHeight(), paint);

// 使用位图对象
imageView.setImageBitmap(bitmap);