bitmap1 = bitmap2导致bitmap1不能使用一致报回收错误解决

public Bitmap createCanNotRecycleBitmap(Bitmap bitmap) {
    int fgWidth = bitmap.getWidth();
    int fgHeight = bitmap.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(fgWidth, fgHeight, Bitmap.Config.ARGB_8888);
    Canvas cv = new Canvas(newbmp);

    //draw fg into
    cv.drawBitmap(bitmap, new Rect(0,0,fgWidth,fgHeight), new Rect(0,0,fgWidth,fgHeight), 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;
}