Android 开发工具类 01_AppUtils

1、获取应用程序名称；

2、获取应用程序版本信息。

 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;
     }

 }