I modified the file androidmanifest.xml to add android:screenOrientation="portrait" but it did not work. So I have to remove that line of code again.
Then click Save button on top. Then go to App Setting and changed my Version code and version name to another number then click Save button again. Now this time, when I open file AndroidManifest.xml, on top of this file, I still see version code and version name them same as before I changed in App Setting.
Did I corrupt my AnroidManifest.xml file? Why I am not able to save my version code and version name in App setting anymore?