package uk.co.whiteoctober.cordova;

import org.apache.cordova.CordovaPlugin;
import org.apache.cordova.CallbackContext;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.pm.PackageManager;

public class AppVersion extends CordovaPlugin {
	@Override
        public boolean execute(String action, JSONArray args, CallbackContext callbackContext) throws JSONException {

		try {	
			if (action.equals("getAppName")) {
				PackageManager packageManager = this.cordova.getActivity().getPackageManager();
				ApplicationInfo app = packageManager.getApplicationInfo(this.cordova.getActivity().getPackageName(), 0);
				callbackContext.success((String)packageManager.getApplicationLabel(app));
				return true;
			}
			if (action.equals("getPackageName")) {
				callbackContext.success(this.cordova.getActivity().getPackageName());
				return true;
			}
			if (action.equals("getVersionNumber")) {
				PackageManager packageManager = this.cordova.getActivity().getPackageManager();
				callbackContext.success(packageManager.getPackageInfo(this.cordova.getActivity().getPackageName(), 0).versionName);
			return true;
			}
			if (action.equals("getVersionCode")) {
				PackageManager packageManager = this.cordova.getActivity().getPackageManager();
				callbackContext.success(packageManager.getPackageInfo(this.cordova.getActivity().getPackageName(), 0).versionCode);
			return true;
			}
			return false;
		} catch (NameNotFoundException e) {
			callbackContext.success("N/A");
			return true;
		}
	}

}

package uk.co.whiteoctober.cordova;

import org.apache.cordova.CordovaPlugin;
import org.apache.cordova.CallbackContext;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.pm.PackageManager;

public class AppVersion extends CordovaPlugin {
  @Override
  public boolean execute(String action, JSONArray args, CallbackContext callbackContext) throws JSONException {

    try {
      if (action.equals("getAppName")) {
        PackageManager packageManager = this.cordova.getActivity().getPackageManager();
        ApplicationInfo app = packageManager.getApplicationInfo(this.cordova.getActivity().getPackageName(), 0);
        callbackContext.success((String)packageManager.getApplicationLabel(app));
        return true;
      }
      if (action.equals("getPackageName")) {
        callbackContext.success(this.cordova.getActivity().getPackageName());
        return true;
      }
      if (action.equals("getVersionNumber")) {
        PackageManager packageManager = this.cordova.getActivity().getPackageManager();
        callbackContext.success(packageManager.getPackageInfo(this.cordova.getActivity().getPackageName(), 0).versionName);
      return true;
      }
      if (action.equals("getVersionCode")) {
        PackageManager packageManager = this.cordova.getActivity().getPackageManager();
        callbackContext.success(packageManager.getPackageInfo(this.cordova.getActivity().getPackageName(), 0).versionCode);
      return true;
      }
      return false;
    } catch (NameNotFoundException e) {
      callbackContext.success("N/A");
      return true;
    }
  }

}

Fix indentation for consistency (tabs -> 2 spaces)