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;
    }

}