<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.rockcheck.mes">

    <!--版本号，用来升级-->

    android:versionCode="1"

    <!--版本名，用来展示给用户-->

    android:versionName="1.0.0">

</manifest>

import android.content.Context;

import android.content.pm.PackageInfo;

import android.content.pm.PackageManager;

public class APKVersion {

    //获取当前本地apk的版本

    public static int getVersionCode(Context context) {

        PackageManager manager = context.getPackageManager();

        int versionCode = 0;

        try {

            //获取软件版本号，对应AndroidManifest.xml下android:versionCode

            PackageInfo info = manager.getPackageInfo(context.getPackageName(), 0);

            versionCode = info.versionCode;

        } catch (PackageManager.NameNotFoundException e) {

            e.printStackTrace();

        }

        return versionCode;

    }

     //获取版本号名称

    public static String getVerName(Context context) {

        PackageManager manager = context.getPackageManager();

        String versionName = null;

        try {

            PackageInfo info = manager.getPackageInfo(context.getPackageName(), 0);

            versionName = info.versionName;

        } catch (PackageManager.NameNotFoundException e) {

            e.printStackTrace();

        }

        return versionName;

    }

}

String versionCode = APKVersion.getVersionCode(this) + "";

String versionName = APKVersion.getVerName(this);