Android获取应用版本号与版本名称

package com.liunan.myfirstapp.util;import android.content.Context;import android.content.pm.ApplicationInfo;import android.content.pm.PackageInfo;import android.content.pm.PackageManager;/*** Created by 刘楠 on 2016-03-22.*/public class PackageUtils {/*** 获取版本名称* @param context 上下文* @return 版本名称*/public static String getVersionName(Context context){//获取包管理器PackageManager pm = context.getPackageManager();//获取包信息try {PackageInfo packageInfo = pm.getPackageInfo(context.getPackageName(),0);//返回版本号return packageInfo.versionName;} catch (PackageManager.NameNotFoundException e) {e.printStackTrace();}return null;} /*** 获取版本号* @param context 上下文* @return 版本号*/public static int getVersionCode(Context context){//获取包管理器PackageManager pm = context.getPackageManager();//获取包信息try {PackageInfo packageInfo = pm.getPackageInfo(context.getPackageName(),0);//返回版本号return packageInfo.versionCode;} catch (PackageManager.NameNotFoundException e) {e.printStackTrace();}return 0;}/*** 获取App的名称* @param context 上下文* @return 名称*/public static String getAppName(Context context){PackageManager pm = context.getPackageManager();//获取包信息try {PackageInfo packageInfo = pm.getPackageInfo(context.getPackageName(),0);//获取应用 信息ApplicationInfo applicationInfo = packageInfo.applicationInfo;//获取albelResint labelRes = applicationInfo.labelRes;//返回App的名称return context.getResources().getString(labelRes);} catch (PackageManager.NameNotFoundException e) {e.printStackTrace();}return null;}}

//版本名public static String getVersionName(Context context) {return getPackageInfo(context).versionName;}//版本号public static int getVersionCode(Context context) {return getPackageInfo(context).versionCode;}private static PackageInfo getPackageInfo(Context context) {PackageInfo pi = null;try {PackageManager pm = context.getPackageManager();pi = pm.getPackageInfo(context.getPackageName(),PackageManager.GET_CONFIGURATIONS);return pi;} catch (Exception e) {e.printStackTrace();}return pi;}