有时候会遇到这样的需求，将两个bitmap对象整合并保存为一张图片，代码如下：
private Bitmap toConformBitmap(Bitmap background, Bitmap foreground) { if( background == null ) { return null; } int bgWidth = background.getWidth(); int bgHeight = background.getHeight(); //int fgWidth = foreground.getWidth(); //int fgHeight = foreground.getHeight(); //create the new blank bitmap 创建一个新的和SRC长度宽度一样的位图 Bitmap newbmp = Bitmap.createBitmap(bgWidth, bgHeight, Config.ARGB_8888); Canvas cv = new Canvas(newbmp); //draw bg into cv.drawBitmap(background, 0, 0, null);//在 0，0坐标开始画入bg //draw fg into cv.drawBitmap(foreground, 0, 0, null);//在 0，0坐标开始画入fg ，可以从任意位置画入 //save all clip cv.save(Canvas.ALL_SAVE_FLAG);//保存 //store cv.restore();//存储 return newbmp; }