Damily的博客

http://blog.youkuaiyun.com/jishu360/article/details/8540026

参考 http://blog.youkuaiyun.com/xu_fu/article/details/39158747 中间 MediaStore.Images.Media.insertImage(context.getContentResolver(), appDir.getAbsolutePath(), fileName, null); 出现NullPointException，去掉context即可