Android version number is always 1

Before using Eclipse, the version number is checked to do the following

<manifest xmlns:android= "Http://schemas.android.com/apk/res/android"
Package= "Com.example.cui.updatetest"
Android:versioncode= "1"
Android:versionname= "1" >

Packagemanager manager = This.getpackagemanager ();
PackageInfo PackageInfo = Manager.getpackageinfo (This.getpackagename (), 0);
Localversion = Packageinfo.versioncode;
Localversionname = Packageinfo.versionname;

Later with Androidstudio, the version number has been 1, found that the original revision build.gradle in the version number

When using Androidstudio, it is found that there is also a default version control in Build.gradle.
Defaultconfig {
Minsdkversion 16
Targetsdkversion 21
Versioncode 1
Versionname "1.0"
}
Modification here is possible. Also, the version in the XML can take effect when you comment it out.

Reference, this sticker http://www.eoeandroid.com/thread-555102-1-1.html

Android version number is always 1