Android Studio package names - android

What are the package names like "com.example.etc." in Android Studio representing? Does it actually have any association with the domain and website? Many tutorials I have read state to use a domain name you own. Why is this?

When releasing your application on the market, your application needs an unique package name. This will correspond to the ID on the market.
So choose a package name like your own domain, or your name... in order to have something unique.

Your package is is your Id when U upload in play store , It will recognize only by Id which is package name ,
Please give as com.companyname.appname.

Related

Apps with same name in Google playstore

We are in the process of decommissioning our app and publishing another app with the same name. The playstore has a criteria that apps must have unique names. So would it be enough to just change the name of the app in the play store listing to something else like myApp-old to satisfy the unique name criteria or should we also update the app(new version) with different name.
The name does not matter. In Android, the important thing is the Package name.
If I remember correctly,
The package of your project needs to be different.
for example "com.google.app"

What are Android Package names and how do they work? [duplicate]

This question already has answers here:
Android - Package Name convention
(7 answers)
Closed 3 years ago.
I want to make an app which i want to publish to the play store.
While creating the app it requires a package name which is something like
com.example.myapp
On doing some research i came to know that it specifies a domain name and is used to uniquely identify our app on play store.
I wanted to know how these packages name work and how do i get the assurity that no other app on play store wont have the same package name as mine.
Also usually when we start android studio it gives a package name com.example.mpapplication. What happens if i try to publish the app with this package name?
Package name uses a “reverse DNS” convention in which the domain name is reversed and suffixed with further identifiers.
This convention keeps package names unique and distinguishes applications from each other on a device and on Google Play.
You don't need to own a .com domain in order to release apps on Play store. It is just a standard. So, Pick some unique name and suffix it with "com. "
If you want to check whether the name you picked is unique or not, simply add it to the following url : https://play.google.com/store/apps/details?id=com.vspinsight.appik.mehangai
Here id=" " is the package name of my app. If the url takes you to an app, that means the package name is already taken.

upload apk error file name should be in format com.example

Hi I am new to android and trying to publish on Google play first time.
I am getting error when uploading apk file saying file name should be in format com.example.myapp.apk
my package name is androidapplication1.androidapplication1.apk
there is no com in it!
is this the source of issue?
androidapplication1.androidapplication1.apk sounds like the file name of your application, not its package name. An apk file name shouldn't have more than one dot in it I believe.
The package name on the other hand should have multiple dots. The package name can be found in your manifest xml file. What does it say for that one?
Have a look here.Taken from the developer site:
A full Java-language-style package name for the application. The name should be unique. The name may contain uppercase or lowercase letters ('A' through 'Z'), numbers, and underscores ('_'). However, individual package name parts may only start with letters.
To avoid conflicts with other developers, you should use Internet domain ownership as the basis for your package names (in reverse). For example, applications published by Google start with com.google. You should also never use the com.example namespace when publishing your applications.
The package name serves as a unique identifier for the application.
It's also the default name for the application process (see the
element's process process attribute) and the default
task affinity of an activity (see the element's
taskAffinity attribute).
Caution: Once you publish your application, you cannot change the
package name. The package name defines your application's identity, so
if you change it, then it is considered to be a differen
t application and users of the previous version cannot update to the new version.
I created a sample app in my own development server with your package name androidapplication1.androidapplication1.apk . I didnot receive any errors. So you can either ask google for this issue or ensure that this package is not used by anyone in the play store.

What should be the package name of android app?

I want to know that what should be the package name of android app? Means normally we used com.appname OR com.organizationName.appName, But when we are submitting our application in to market then sometimes it shows the errors related to the package name that- Please change Package name. It should not be started with com etc..
I want to know why this happnes? And what should be Right the package name for android application?
If anyone knows the reason or answer of this question then please let me know.
As stated here: Package names are written in all lower case to avoid conflict with the names of classes or interfaces.
Companies use their reversed Internet domain name to begin their package names—for example, com.example.mypackage for a package named mypackage created by a programmer at example.com.
Name collisions that occur within a single company need to be handled by convention within that company, perhaps by including the region or the project name after the company name (for example, com.example.region.mypackage).
Packages in the Java language itself begin with java. or javax.
In some cases, the internet domain name may not be a valid package name. This can occur if the domain name contains a hyphen or other special character, if the package name begins with a digit or other character that is illegal to use as the beginning of a Java name, or if the package name contains a reserved Java keyword, such as "int". In this event, the suggested convention is to add an underscore. For example:
Android follows the same naming conventions like Java,
Naming Conventions
Package names are written in all lower case to avoid conflict with the names of classes or interfaces.
Companies use their reversed Internet domain name to begin their package names—for example, com.example.mypackage for a package named mypackage created by a programmer at example.com.
Name collisions that occur within a single company need to be handled by convention within that company, perhaps by including the region or the project name after the company name (for example, com.example.region.mypackage).
Packages in the Java language itself begin with java. or javax.
In some cases, the internet domain name may not be a valid package name. This can occur if the domain name contains a hyphen or other special character, if the package name begins with a digit or other character that is illegal to use as the beginning of a Java name, or if the package name contains a reserved Java keyword, such as "int". In this event, the suggested convention is to add an underscore. For example:
Legalizing Package Names:
Domain Name Package Name Prefix
hyphenated-name.example.org org.example.hyphenated_name
example.int int_.example
123name.example.com com.example._123name
As you stated, package names are usually in the form of 'com.organizationName.appName' - all lowercase and no spaces. It sounds like the package name that you entered when uploading the app was different from the one declared in the AndroidManifest.
Presently Package name starting with "com.example" is not allowed to upload in the app -store.
Otherwise , all other package names starting with "com" are allowed .
Visit https://developers.google.com/mobile/add and try to fill "Android package name". In some cases it can write error: "Invalid Android package name".
In https://developer.android.com/studio/build/application-id.html it is written:
And although the application ID looks like a traditional Java package
name, the naming rules for the application ID are a bit more
restrictive:
It must have at least two segments (one or more dots).
Each segment must start with a letter.
All characters must be alphanumeric or an underscore [a-zA-Z0-9_].
So, "0com.example.app" and "com.1example.app" are errors.
Package name is the reversed domain name, it is a unique name for each application on Playstore. You can't upload two apps with the same package name.
You can check package name of the app from playstore url
https://play.google.com/store/apps/details?id=package_name
so you can easily check on playstore that this package name is in used by some other app or not before uploading it.
package name with 0 may cause problem for sharedPreference.
(OK) con = createPackageContext("com.example.android.sf1", 0);
(Problem but no error)
con = createPackageContext("com.example.android.sf01", 0);

Accessing database from different package : It give error : android.database.sqlite.SQLiteException: unable to open database file

I have two different application
1. databaseSetup Application -- database.apk
2. Sales Application -- salesApp.apk
I am having like this because of if the database corrupted, need to reinstall database only. Don't need to install the application that time.
Package for databaseSetup application
/data/data/com.xont.app/databases/
Package for Sales Application - com.xont.controller
I want access the Database from different package.That means sales aapplication package is com.xont.controller & database package is /data/data/com.xont.app/databases/ .
Is it possible to access this folder different application?
For that question I got link from one of my friend Click
In there i couldn't understand the share a user ID and are signed by the same signing key. What is the User ID & Sining Key?
Please anybody tell me what is the UserID, SingingKey? & how can I share both?
Please help me this...
Thanks in advance...
Yes, you can access folder from different application, If both application sign by same signature key and both have a same User ID.
now for user ID and Signature key,
User IDs and File Access
At install time, Android gives each package a distinct Linux user ID. The identity remains constant for the duration of the package's life on that device. On a different device, the same package may have a different UID; what matters is that each package has a distinct UID on a given device.
You can use the sharedUserId attribute in the AndroidManifest.xml's manifest tag of each package to have them assigned the same user ID.
IF possible put your database file in local databse directory, or in sdcard then you can access from any application. But its on the security concern of database.
If you are directly trying to access the given database from it's current location, it might not work, because of the administrative rights on the file. What you can try is to copy the file from the current location to the local databases folder in the app, and then try working on the same.

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