PackageManager packageManager = getApplicationContext().getPackageManager();
    ApplicationInfo applicationInfo ;
    try {
        applicationInfo = packageManager.getApplicationInfo( this.getPackageName(), 0);
    } catch (final NameNotFoundException e) {
        applicationInfo = null;
    }
    String applicationName = (String) (applicationInfo != null ? packageManager.getApplicationLabel(applicationInfo ) : "(unknown)");

./aapt2 dump packagename <path_to_apk>