How can you get the build/version number of your Android application?

Question

I need to figure out how to get or make a build number for my Android application. I need the build number to display in the UI.

Do I have to do something with AndroidManifest.xml?

Answer 1

If you're using the Gradle plugin/Android Studio, as of version 0.7.0, version code and version name are available statically in BuildConfig. Make sure you import your app's package, and not another BuildConfig:

import com.yourpackage.BuildConfig; ... int versionCode = BuildConfig.VERSION_CODE; String versionName = BuildConfig.VERSION_NAME; 

No Context object needed!

Also make sure to specify them in your build.gradle file instead of the AndroidManifest.xml.

defaultConfig {     versionCode 1     versionName "1.0" } 

Answer 2

Use:

try {     PackageInfo pInfo = context.getPackageManager().getPackageInfo(context.getPackageName(), 0);     String version = pInfo.versionName; } catch (PackageManager.NameNotFoundException e) {     e.printStackTrace(); } 

And you can get the version code by using this

int verCode = pInfo.versionCode;