Android文件api获得的路径

InternalStorage

/data/user/0等同于/data/data

context.getFilesDir();
//路径：/data/user/0/包名/files

context.getCacheDir();
//路径：/data/user/0/包名/cache

context.getDir("abc",MODE_PRIVATE);
//路径：/data/user/0/包名/app_abc

contexnt.createTmpFile("myTmp",".suffix");
//路径：/data/user/0/包名/cache/myTmp一串随机数字.suffix

ExternalStorage

/storage/emulated/0等同于/sdcard

context.getExternalCacheDir();
//路径：/storage/emulated/0/Android/data/包名/cache

context.getExternalFilesDir();
//路径：/storage/emulated/0/Android/data/包名/files

关于InternalStorage和ExternalStorage的详细介绍跳转文档：

https://developer.android.com/training/data-storage/files#WriteExternalStorage