如何获得 Android 应用程序的构建 / 版本号？

I need to figure out how to get or make a build number for my Android application. I need the build number to display in the UI.

Do I have to do something with AndroidManifest.xml?

There are two parts you need: android:versionCode android:versionName

versionCode is a number, and every version of the app you submit to the Market needs to have a higher number then the last.

VersionName is a string, and can be anything you want it to be. This is where you define your app as "1.0" or "2.5" or "2 Alpha EXTREME!" or whatever.

Example:

To access it in code, do something like:

PackageManager manager = this.getPackageManager();
PackageInfo info = manager.getPackageInfo(this.getPackageName(), 0);
Toast.makeText(this,
     "PackageName = " + info.packageName + "\nVersionCode = "
       + info.versionCode + "\nVersionName = "
       + info.versionName + "\nPermissions = " + info.permissions, Toast.LENGTH_SHORT).show();

Slightly shorter version if you just want the version name.

String versionName = context.getPackageManager()
    .getPackageInfo(context.getPackageName(), 0).versionName;

Use:

try {
    PackageInfo pInfo = context.getPackageManager().getPackageInfo(getPackageName(), 0);
    String version = pInfo.versionName;
} catch (PackageManager.NameNotFoundException e) {
    e.printStackTrace();
}

And you can get the version code by using this

int verCode = pInfo.versionCode;

If you're using PhoneGap, then create a custom PhoneGap plugin:

Create a new class in your app's package:

package com.Demo; //replace with your package name

import org.json.JSONArray;

import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;

import com.phonegap.api.Plugin;
import com.phonegap.api.PluginResult;
import com.phonegap.api.PluginResult.Status;

public class PackageManagerPlugin extends Plugin {

    public final String ACTION_GET_VERSION_NAME = "GetVersionName";

    @Override
    public PluginResult execute(String action, JSONArray args, String callbackId) {
        PluginResult result = new PluginResult(Status.INVALID_ACTION);
        PackageManager packageManager = this.ctx.getPackageManager();

        if(action.equals(ACTION_GET_VERSION_NAME)) {
            try {
                PackageInfo packageInfo = packageManager.getPackageInfo(
                                              this.ctx.getPackageName(), 0);
                result = new PluginResult(Status.OK, packageInfo.versionName);
            }
            catch (NameNotFoundException nnfe) {
                result = new PluginResult(Status.ERROR, nnfe.getMessage());
            }
        }

        return result;
    }
}

In the plugins.xml, add the following line:

<plugin name="PackageManagerPlugin" value="com.Demo.PackageManagerPlugin" />

In your deviceready event, add the following code:

var PackageManagerPlugin = function() {

};
PackageManagerPlugin.prototype.getVersionName = function(successCallback, failureCallback) {
    return PhoneGap.exec(successCallback, failureCallback, 'PackageManagerPlugin', 'GetVersionName', []);
};
PhoneGap.addConstructor(function() {
    PhoneGap.addPlugin('packageManager', new PackageManagerPlugin());
});

Then, you can get the versionName attribute by doing:

window.plugins.packageManager.getVersionName(
    function(versionName) {
        //do something with versionName
    },
    function(errorMessage) {
        //do something with errorMessage
    }
);

Derived from here and here.

Here is a clean solution, based on the solution of scottyab (edited by Xavi). It shows how to get the context first, if it's not provided by your method. Furthermore it uses multiple lines instead of calling multiple methods per line. This makes it easier when you have to debug your application.

Context context = getApplicationContext(); // or activity.getApplicationContext()
PackageManager packageManager = context.getPackageManager();
String packageName = context.getPackageName();

String myVersionName = "not available"; // initialize String

try {
    myVersionName = packageManager.getPackageInfo(packageName, 0).versionName;
} catch (PackageManager.NameNotFoundException e) {
    e.printStackTrace();
}

Now that you received the version name in the String myVersionName, you can set it to a TextView or whatever you like..

// set version name to a TextView
TextView tvVersionName = (TextView) findViewById(R.id.tv_versionName);
tvVersionName.setText(myVersionName);

If you're using the Gradle plugin/Android Studio, as of version 0.7.0, version code and version name are available statically in BuildConfig. Make sure you import your app's package, and not another BuildConfig:

import com.yourpackage.BuildConfig;
...
int versionCode = BuildConfig.VERSION_CODE;
String versionName = BuildConfig.VERSION_NAME;

No Context object needed!

Also make sure to specify them in your build.gradle file instead of the AndroidManifest.xml.

defaultConfig {
    versionCode 1
    versionName "1.0"
}

Always do it with try catch block:

String versionName = "Version not found";

try {
    versionName = context.getPackageManager().getPackageInfo(context.getPackageName(), 0).versionName;
    Log.i(TAG, "Version Name: " + versionName);
} catch (NameNotFoundException e) {
    // TODO Auto-generated catch block
    Log.e(TAG, "Exception Version Name: " + e.getLocalizedMessage());
}

Using Gradle and BuildConfig

Getting the VERSION_NAME from BuildConfig

BuildConfig.VERSION_NAME

Yep, it's that easy now.

Is It Returning an Empty String for VERSION_NAME?

If you're getting a empty string for BuildConfig.VERSION_NAME then read on.

I kept getting an empty string for BuildConfig.VERSION_NAME because I wasn't setting the versionName in my Grade build file (I migrated from ANT to Gradle). So, here are instructions for ensuring you're setting your VERSION_NAME via Gradle.

build.gradle

def versionMajor = 3
def versionMinor = 0
def versionPatch = 0
def versionBuild = 0 // bump for dogfood builds, public betas, etc.

android {

  defaultConfig {
    versionCode versionMajor * 10000 + versionMinor * 1000 + versionPatch * 100 + versionBuild

    versionName "${versionMajor}.${versionMinor}.${versionPatch}"
  }

}

Note: This is from the masterful Jake Wharton.

Removing versionName and versionCode from AndroidManifest.xml

And since you've set the versionName and versionCode in the build.gradle file now, you can also remove them from your AndroidManifest.xml file, if they are there.

First:

import android.content.pm.PackageManager.NameNotFoundException;

and then use this:

PackageInfo pInfo = null;
try {
     pInfo = getPackageManager().getPackageInfo(getPackageName(), 0);
} catch (NameNotFoundException e) {
     e.printStackTrace();
            }
String versionName = pInfo.versionName;

I have SOLVE this by using Preference class.

package com.example.android;

import android.content.Context;
import android.preference.Preference;
import android.util.AttributeSet;

public class VersionPreference extends Preference {
    public VersionPreference(Context context, AttributeSet attrs) {
        super(context, attrs);
        String versionName;
        final PackageManager packageManager = context.getPackageManager();
        if (packageManager != null) {
            try {
                PackageInfo packageInfo = packageManager.getPackageInfo(context.getPackageName(), 0);
                versionName = packageInfo.versionName;
            } catch (PackageManager.NameNotFoundException e) {
                versionName = null;
            }
            setSummary(versionName);
        }
    }
}

 package com.sqisland.android.versionview;

import android.app.Activity;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.widget.TextView;

public class MainActivity extends Activity {
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    TextView textViewversionName = (TextView) findViewById(R.id.text);

    try {
        PackageInfo packageInfo = getPackageManager().getPackageInfo(getPackageName(), 0);
        textViewversionName.setText(packageInfo.versionName);

    }
    catch (PackageManager.NameNotFoundException e) {

    }

  }
}

Someone who does’t need BuildConfig info for application's UI however wants to use these info for setting a CI job configuration or others, like me.

There is a automatically generated file, BuildConfig.java, under your project directory as long as you build your project successfully.

{WORKSPACE}/build/generated/source/buildConfig/{debug|release}/{PACKAGE}/BuildConfig.java

/**
* Automatically generated file. DO NOT MODIFY
*/
package com.XXX.Project;

public final class BuildConfig {
    public static final boolean DEBUG = Boolean.parseBoolean("true");
    public static final String APPLICATION_ID = "com.XXX.Project";
    public static final String BUILD_TYPE = "debug";
    public static final String FLAVOR = "";
    public static final int VERSION_CODE = 1;
    public static final String VERSION_NAME = "1.0.0";
}

Split information you need by python script or other tools. Here’s an example:

import subprocess
#find your BuildConfig.java
_BuildConfig = subprocess.check_output('find {WORKSPACE} -name BuildConfig.java', shell=True).rstrip()
#get the version name
_Android_version = subprocess.check_output('grep -n "VERSION_NAME" '+_BuildConfig, shell=True).split('"')[1]
print('Android version :’+_Android_version)

Please excuse my limited English ability, but hope this helps.

A very simple way is :

private String appVersion = BuildConfig.VERSION_NAME;

If you want to use it on xml then add below line on your gradle file:

applicationVariants.all { variant ->
    variant.resValue "string", "versionName", variant.versionName
}

And then use it on your xml like this:

<TextView
        android:gravity="center_horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/versionName" />

Here is the method for getting the version code:

public String getAppVersion() {
    String versionCode = "1.0";
    try {
        versionCode = getPackageManager().getPackageInfo(getPackageName(), 0).versionName;
    } catch (PackageManager.NameNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return versionCode;
}

For xamarin users, use this code to get version name and code

1) Version Name:

public string getVersionName(){
      return Application.Context.ApplicationContext.PackageManager.GetPackageInfo(Application.Context.ApplicationContext.PackageName, 0).VersionName;
}

2) Version Code:

public string getVersionCode(){
      return Application.Context.ApplicationContext.PackageManager.GetPackageInfo(Application.Context.ApplicationContext.PackageName, 0).VersionCode;
}

private String GetAppVersion(){
        try {
            PackageInfo _info = mContext.getPackageManager().getPackageInfo(mContext.getPackageName(), 0);
            return _info.versionName;
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
            return "";
        }
    }

    private int GetVersionCode(){
        try {
            PackageInfo _info = mContext.getPackageManager().getPackageInfo(mContext.getPackageName(), 0);
            return _info.versionCode;
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
            return -1;
        }
    }

try this one:

try 
{
    device_version =  getPackageManager().getPackageInfo("com.google.android.gms", 0).versionName;
}
catch (PackageManager.NameNotFoundException e)
{
    e.printStackTrace();
}

This code was mentioned above in pieces but here it is again all included. You need a try/catch block because it may throw a "NameNotFoundException".

try {
   String appVersion = getPackageManager().getPackageInfo(getPackageName(), 0).versionName;
} catch (PackageManager.NameNotFoundException e) {e.printStackTrace();}

I hope this simplifies things for someone down the road. :)

Example for inside Fragment usage.

        import android.content.pm.PackageManager;
        .......

        private String VersionName;
        private String VersionCode;
        .......


        Context context = getActivity().getApplicationContext();

        /*Getting Application Version Name and Code*/
        try
        {

             VersionName = context.getPackageManager().getPackageInfo(context.getPackageName(), 0).versionName;

             /*I find usefull to convert vervion code into String, so it's ready for TextViev/server side checks*/ 

             VersionCode = Integer.toString(context.getPackageManager().getPackageInfo(context.getPackageName(), 0).versionCode);
        } catch (PackageManager.NameNotFoundException e)
        {
             e.printStackTrace();
        }

// DO SOMETHING USEFULL WITH THAT

There are some ways to get versionCode and versionName programmatically.

1. Get version from PackageManager. This is the best way for most cases.

try {
    String versionName = packageManager.getPackageInfo(packageName, 0).versionName;
    int versionCode = packageManager.getPackageInfo(packageName, 0).versionCode;
} catch (PackageManager.NameNotFoundException e) {
    e.printStackTrace();
}

2. Get it from generated BuildConfig.java. But notice, that if you'll access this values in library it will return library version, not apps one, that uses this library. So use only in non-library projects!

String versionName = BuildConfig.VERSION_NAME;
int versionCode = BuildConfig.VERSION_CODE;

There are some details, except of using second way in library project. In new android gradle plugin (3.0.0+) some functionalities removed. So, for now, i.e. setting different version for different flavors not working correct.

Incorrect way:

applicationVariants.all { variant ->
    println('variantApp: ' + variant.getName())

    def versionCode = {SOME_GENERATED_VALUE_IE_TIMESTAMP}
    def versionName = {SOME_GENERATED_VALUE_IE_TIMESTAMP}

    variant.mergedFlavor.versionCode = versionCode
    variant.mergedFlavor.versionName = versionName
}

Code above will correctly set values in BuildConfig, but from PackageManager you'll receive 0 and null if you didn't set version in default configuration. So your app will have 0 version code on device.

There is a workaround - set version for output apk file manually:

applicationVariants.all { variant ->
    println('variantApp: ' + variant.getName())

    def versionCode = {SOME_GENERATED_VALUE_IE_TIMESTAMP}
    def versionName = {SOME_GENERATED_VALUE_IE_TIMESTAMP}

    variant.outputs.all { output ->
        output.versionCodeOverride = versionCode
        output.versionNameOverride = versionName
    }
}

  PackageInfo pinfo = null;
    try {
        pinfo = getPackageManager().getPackageInfo(getPackageName(), 0);
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
    }
    int versionNumber = pinfo.versionCode;
    String versionName = pinfo.versionName;

BuildConfig.VERSION_NAME //version name from your build file
BuildConfig.VERSION_CODE //version code from your build file

I don't see the need to get it from package manager

In Activity file

final TextView text_1 = (TextView) findViewById(R.id.text_1);

String version= BuildConfig.VERSION_NAME;
int code = BuildConfig.VERSION_CODE;
text_1.setText("version Name :   "+version+ "Version Code : "+code);

I hope it will help you...!

Use BuildConfig class

String versionName = BuildConfig.VERSION_NAME;
int versionCode = BuildConfig.VERSION_CODE;

build.gradle(app)

 defaultConfig {
    applicationId "com.myapp"
    minSdkVersion 19
    targetSdkVersion 27
    versionCode 17
    versionName "1.0"
   }

try {
        PackageInfo packageInfo = getPackageManager().getPackageInfo(getPackageName(), 0);
        String versionName = packageInfo.versionName;
        int versionCode = packageInfo.versionCode;
        //binding.tvVersionCode.setText("v" + packageInfo.versionName);
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
    }