Implement ORB SLAM2 on an Android Phone.

basic ORB SLAM2 project source code is on：https://github.com/raulmur/ORB_SLAM2
you can also find Related Publications about this project on this page.

the original refernence program is on: https://github.com/kevinwchn/slamit_ORBSLAM2_on_Android
make it possible to run after dubugging and at the same time partly changed the UI.

Compiling environment: android studio 2.2
Test environment: android 7.0

this program need two files before running, both camera setting file and vocabulary file.
you can find the vocabulary file from:
https://github.com/raulmur/ORB_SLAM2/tree/master/Vocabulary
setting file can be designed according to:
https://github.com/raulmur/ORB_SLAM2/blob/master/Examples/Monocular/TUM1.yaml

the default path:
setting file: "/storage/emulated/0/SLAM/Calibration/List.yaml"
vocabulary file: "/storage/emulated/0/SLAM/VOC/ORBvoc.txt"

if you want to change the path please swipe left on the main page

this release no need to open openCV manager on the phone.
already packed in the apk.