AppUtils用于获取程序版本信息，程序名称的Android工具类

    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;  
        }  
      
    }