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);