import android.content.Context;

 import android.content.pm.PackageInfo;

 import android.content.pm.PackageManager;

 import android.content.pm.PackageManager.NameNotFoundException;

 // 跟 App 相关的辅助类

 public class AppUtils

 {

     private AppUtils()

     {

         /* cannot be instantiated */

         throw new UnsupportedOperationException("cannot be instantiated");

     }

     /**

      * 获取应用程序名称

      */

     public static String getAppName(Context context)

     {

         try

         {

             PackageManager packageManager = context.getPackageManager();

             PackageInfo packageInfo = packageManager.getPackageInfo(

                     context.getPackageName(), 0);

             int labelRes = packageInfo.applicationInfo.labelRes;

             return context.getResources().getString(labelRes);

         } catch (NameNotFoundException e)

         {

             e.printStackTrace();

         }

         return null;

     }

     /**

      * [获取应用程序版本名称信息]

      *

      * @param context

      * @return 当前应用的版本名称

      */

     public static String getVersionName(Context context)

     {

         try

         {

             PackageManager packageManager = context.getPackageManager();

             PackageInfo packageInfo = packageManager.getPackageInfo(

                     context.getPackageName(), 0);

             return packageInfo.versionName;

         } catch (NameNotFoundException e)

         {

             e.printStackTrace();

         }

         return null;

     }

 }