android apk程序升级

1 .设置apk版本号

Androidmanifest.xml

<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>

android stduio里得改法

2.获取版本号类

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;
    }
}

调用方法：

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

APKVersion