我想创建一个空位图并为该位图设置一个 Canvas ，然后在该位图上绘制任何形状。

最佳答案

这可能比你想象的要简单:

int w = WIDTH_PX, h = HEIGHT_PX;

Bitmap.Config conf = Bitmap.Config.ARGB_8888; // see other conf types
Bitmap bmp = Bitmap.createBitmap(w, h, conf); // this creates a MUTABLE bitmap
Canvas canvas = new Canvas(bmp);

// ready to draw on that bitmap through that canvas

这是有关该主题的官方文档:Custom Drawing

https://stackoverflow.com/questions/5663671/