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

User · Answer

If you are using the new   Gradle build system then getPackageName will oddly return application Id  not package name  So MasterGaurav s answer is correct but he doesn t need to start off with        If by application id  you re referring to package name      See more about the differences here      not so new at this point     I realize that his answer made perfect sense in 2011

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Android App ES File Explorer shows the Android package name in the User Apps section which is useful for Bitwarden  Bitwarden refers to this as  android application package ID  or package name

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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 amp hl en will be there and this is your Apps Unique Id

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If the whole purpose is to communicate data with some other application  use Intent s sendBroadcast methods

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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

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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

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

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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

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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    Start an activity of another application and send data in the  Extras  of the  Intent  Send a broadcast with specific action category and send data in the extras If you just need to share structured data  use content provider 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

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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

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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

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To track installations  you could for example use a UUID as an identifier  and simply create a new one the first time an app runs after installation  Here is a sketch of a class named    Installation    with one static method Installation id Context context   You could imagine writing more installation-specific data into the INSTALLATION file   public class Installation   private static String sID   null  private static final String INSTALLATION    INSTALLATION   public synchronized static String id Context context         if  sID    null             File installation   new File context getFilesDir    INSTALLATION          try              if   installation exists                   writeInstallationFile installation              sID   readInstallationFile installation            catch  Exception e               throw new RuntimeException e                     return sID     private static String readInstallationFile File installation  throws IOException      RandomAccessFile f   new RandomAccessFile installation   r       byte   bytes   new byte  int  f length        f readFully bytes      f close       return new String bytes      private static void writeInstallationFile File installation  throws IOException      FileOutputStream out   new FileOutputStream installation      String id   UUID randomUUID   toString       out write id getBytes        out close           Yon can see more at https   github com MShoaibAkram Android-Unique-Application-ID

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The PackageInfo sharedUserId field will show the user Id assigned in the manifest   If you want two applications to have the same userId  so they can see each other s data and run in the same process  then assign them the same userId in the manifest   android sharedUserId  string    The two packages with the same sharedUserId need to have the same signature too   I would also recommend reading here for a nudge in the right direction

[android] How to get Android application id?

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