https://blog.csdn.net/taily_duan/article/details/52219607
从资源存放路径分:
(1)图片放在sdcard中
Bitmap imageBitmap = BitmapFactory.decodeFile(path);// (path 是图片的路径,跟目录是/sdcard)
https://blog.csdn.net/taily_duan/article/details/52219607