1. 新建assets目录：

https://blog.csdn.net/qq_26585943/article/details/53885627

2. NCNN使用assets:

https://zhuanlan.zhihu.com/p/137453394

https://github.com/Arctanxy/DeepLearningDeployment/blob/master/SimplestNCNNExample/app/src/main/java/com/example/simplestncnnexample/MainActivity.java

3. assets文件访问：

https://www.cnblogs.com/willhua/p/9692529.html