- Bitmap bitmap = BitmapFactory.decodeResource(r, R.drawable.icon)
- .copy(Bitmap.Config.ARGB_8888, true);
- Canvas c = new Canvas(bitmap);
不加copy会因为图片是资源而不允许改动,
会报这个错
java.lang.IllegalStateException: Immutable bitmap passed to Canvas constructor
执行new Canvas之后就可以随意在上面画东西了