android - packageInfo.versionCode always return 1 -

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If I change Manifest.xml from version 1 to 2, then Package Infocationcode always returns 1. I want to go back to 2, where should I fix it? Incidentally, packageInfo.versionName returns 1.0 in this case. 

  PackageManager packageManager = getContext (). GetPackageManager (); Try {PackageInfo packageInfo = packageManager.getPackageInfo (getContext). GetPackageName (), PackageManager.GET_ACTIVITIES); DB_VERSION = packageInfo.versionCode; Logs. V ("b", "+ + packageInfo.versionName");} hold (PackageManager.NameNotFoundException e) {e.printStackTrace ();}  V ("a", "+ + package" Code>  
 Manifest.xml  
  & nbsp; Manifest xmlns: android = "http://schemas.android.com/apk/res/android" package = " Com.example "android: versionCode =" 2 "Android: versionName =" 1.1 "& gt;

Change

PackageInfo package INFO = packageManager.getPackageInfo (GetContext (). GetPackageName (), PackageManager.GET_ACTIVITIES);

to 

  PackageInfo package INFO = packageManager.getPackageInfo (getContext (). GetPackageName (), 0);

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