How to get Android application id?

Question

In Android, how do I get the application's id programatically (or by some other method), and how can I communicate with other applications using that id?

Answer 1

If your are looking for the value defined by applicationId in gradle, you can simply use

BuildConfig.APPLICATION_ID 

Answer 2

If by application id, you're referring to package name, you can use the method Context::getPackageName (http://http://developer.android.com/reference/android/content/Context.html#getPackageName%28%29).

In case you wish to communicate with other application, there are multiple ways:

1. Start an activity of another application and send data in the "Extras" of the "Intent"
2. Send a broadcast with specific action/category and send data in the extras
3. If you just need to share structured data, use content provider
4. If the other application needs to continuously run in the background, use Server and "bind" yourself to the service.

If you can elaborate your exact requirement, the community will be able to help you better.

Answer 3

i'm not sure what "application id" you are referring to, but for a unique identifier of your application you can use:

getApplication().getPackageName() method from your current activity

Answer 4

For getting AppId (or package name, how some says), just call this:

But be sure that you importing BuildConfig with your app id packages path

BuildConfig.APPLICATION_ID 

Answer 5

Package name is your android app id .

String appId = BuildConfig.APPLICATION_ID

Or

https://play.google.com/store/apps/details?id=com.whatsapp

App Id = com.whatsapp

Answer 6

Else you can get id of process your application runs in:

final static int android.os.Process.myPid()
Returns the identifier of this process, which can be used with killProcess(int) and sendSignal(int, int).

Answer 7

I am not sure what you need the app/installation ID for, but you can review the existing possibilities in a great article from Android developers:

• http://android-developers.blogspot.com/2011/03/identifying-app-installations.html

To sum up:

• UUID.randomUUID() for creating id on the first time an app runs after installation and simple retrieval afterwards
• TelephonyManager.getDeviceId() for actual device identifier
• Settings.Secure.ANDROID_ID on relatively modern devices

Answer 8

Step 1: Open the Google Play Store

Step 2: Open any App in App Store Example: facebook

Step 3: Click on any App and Look at the Browser link and At the End id=com.facebook.katana&hl=en will be there and this is your Apps Unique Id.