CODEWITHSUNDEEP
android
SpecialSnowflake
SpecialSnowflake

Reputation: 995

Android BuildConfig.VERSION_NAME returning null?

I'd like to simply display my version name on my login screen, however, it's always returning null. I've defined my versionName in my app's gradle build as follows:

    defaultConfig {
    applicationId "com.maplesyrupindustries.j.airportmeet"
    minSdkVersion 19
    targetSdkVersion 24
    versionCode 7
    versionName "1.0.6"
    multiDexEnabled true
}

And I am calling it in my login's onCreate:

    String build = BuildConfig.VERSION_NAME;
    Log.e(TAG, BuildConfig.VERSION_NAME);
    tvVersion.setText("Alpha " + build);

Yet, the build string is always empty. What gives?

Upvotes: 15

Views: 19529

Answers (3)

Keshav Gera
Keshav Gera

Reputation: 11264

BuildConfig.VERSION_NAME is not working 
1). In Case when you import Wrong Package Please check your import Package 
2). Please import your application package & solve this issue permanently


  PackageInfo pInfo = null;
  try {
       pInfo = getActivity().getPackageManager().getPackageInfo(getActivity().getPackageName(), 0);
    } catch (Exception e) {
        e.printStackTrace();
    }   

 String versionName = pInfo.versionName;//Version Name
 int versionCode = pInfo.versionCode;//Version Code

 Log.e("keshav"," VERSION_NAME -->" + versionName +"versionCode -> "+versionCode);

Output

E/keshav:  VERSION_NAME -->2.0.4  versionCode -> 26

enter image description here

Upvotes: 5

Jorgesys
Jorgesys

Reputation: 126563

Using BuildConfig.VERSION_NAME will return null like other values like:

public final class BuildConfig {
  public static final boolean DEBUG = Boolean.parseBoolean("true");
  public static final String APPLICATION_ID = "com.mypackage.myapp";
  public static final String BUILD_TYPE = "debug";
  public static final String FLAVOR = "";
  public static final int VERSION_CODE = 1;
  public static final String VERSION_NAME = "1.0";
}

The reason, because the file that contains this values BuildConfig.java, doesn´t exist until you compile the proyect, in fact the file BuildConfig.java is created inside folder \build, specifically \build\generated\source\buildConfig\debug\....

Like a better option to get versionName use this method:

public String getVersionName(Context ctx){
    try {
    return ctx.getPackageManager().getPackageInfo(getPackageName(), 0).versionName;
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
        return "";
    }
}

Upvotes: 1

Abhishek Patel
Abhishek Patel

Reputation: 4328

Please try this

PackageInfo pInfo = getPackageManager().getPackageInfo(getPackageName(), 0);
String version = pInfo.versionName;//Version Name
int verCode = pInfo.versionCode;//Version Code

Upvotes: 14

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