1.optimized the localMediaLoader
2.fix a crash case in ImageCropActivity--null pointer
please know that:I just optimized the image load mechanism to offer you a train of thought,get a image folder by one file in it is faster than query the SQLite，you also forgot to close the cursor after query,I added it for you.
1.优化了图片加载机制
2.修复了一个图片剪裁中的空指针异常
须知：我只优化了图片加载的部分，只是为了提供一种思路，通过查询到的一个文件去获取他的目录，然后通过file的api去获取该目录下的所有文件，这样可以减少数据库的操作，提升速度。
finally ,thank you for open source this project
最后感谢你开源了这个项目
1.optimized the localMediaLoader 2.fix a crash case in ImageCropActivity--null pointer please know that:I just optimized the image load mechanism to offer you a train of thought,get a image folder by one file in it is faster than query the SQLite，you also forgot to close the cursor after query,I added it for you. 1.优化了图片加载机制 2.修复了一个图片剪裁中的空指针异常 须知：我只优化了图片加载的部分，只是为了提供一种思路，通过查询到的一个文件去获取他的目录，然后通过file的api去获取该目录下的所有文件，这样可以减少数据库的操作，提升速度。 finally ,thank you for open source this project 最后感谢你开源了这个项目