我正在试图弄清楚如何在android中绘制位图,并为撤消函数保留这些已更改位图的副本.
Bitmap b = ...
Paint p = new Paint();
canvas.drawBitmap(b, new Matrix(), null);
canvas.drawCircle(0,0,20,20);
//does Bitmap b have the circle drawn on it next time?
或者如何在使用画布绘制位图之后获取位图(我想保留一堆位图以及画布绘制所应用的更改)？也许我说这完全错了.