android studio根据包名获取当前安装包信息

package com.example.myapplication2;import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.util.Log;/**** 获取版本信息*/
public class SystemHelper {/*** 获取本地软件版本号*/public static int getLocalVersion(Context context) {int localVersion = 0;try {PackageInfo packageInfo = context.getApplicationContext().getPackageManager().getPackageInfo(context.getPackageName(), 0);localVersion = packageInfo.versionCode;Log.d("当前版本号：" , String.valueOf(localVersion));} catch (PackageManager.NameNotFoundException e) {e.printStackTrace();}return localVersion;}/*** 获取本地软件版本号名称*/public static String getLocalVersionName(Context context) {String localVersion = "";try {PackageInfo packageInfo = context.getApplicationContext().getPackageManager().getPackageInfo(context.getPackageName(), 0);localVersion = packageInfo.versionName;Log.d("当前版本名称：", localVersion);} catch (PackageManager.NameNotFoundException e) {e.printStackTrace();}return localVersion;}}

activity中使用

Context context = getApplicationContext();
SystemHelper.getLocalVersion(context);
SystemHelper.getLocalVersionName(context);