Develop Reference

Android application automatic update

I'm building an android app that is gonna be used by many users. So I'd like to know how the app can be automatically updated for all user as long as I'll be updating new version. How the application can automatically search for updates.
Is there any tutorial link or explanation that can help in that way?

if your app will be used by many users you should publish it in Google Play Store using Google Play Console, using it you have the control of bug reports, installations and Crashes and ANR logs, the country of your user and more... But if you won't publish your app in Play Store you can follow some tutorials or add a text file on active URL where you compare the Application version with the Version wrote in the file, if the application version is oldest in another file write the link of the new version.

Can I change the base code of my mobile application entirely and still reserve my download count on Google play and Apple store?

We're doing a new mobile app for a business and we're going to use a new code base and basically build it from scratch, they already have a mobile app and the new one should replace the old on both google play and apple store and I needed to know if that is going to reset the download count that already exists for the old app or not?
your help is much appreciated.
Thanks in advance.

I needed to know if that is going to reset the download count that
already exists for the old app or not?
No. As long as you keep the applicationId as well as the signing keystore same as your older release. You can simply upload your app as an update to your previous app.

Check if android app has a newer version on playStore

I want to know if it is possible to check if the app that the user is running is the latest version that is available at Google PlayStore. I have read some answers and they say that this is not possible, but I see some apps that do this.
Can someone tell me how can I do this? I can see that this is possible.

Indeed the Google Play Services do not expose such API.
But you could use a workaround to check for newer versions: a simple request on your serveur could do, parsing the Play Store page could do too etc.

You can create an api on your server for these kind of operations.
Your api can return values such as currentVersionCode, minVersionCode and an updateMessage.
You can compare your apps version code, currentVersionCode and minVersionCode and show a dialog for nice to update or force update.

android- can i make the app to download newest source code and update itself?

my app is sideloaded which means it is not on google play store. when it comes to update, it requires users to manually download the apk and replace the previous.
is it possible that I can have majority of my code on my server and have app to pull then update itself? app would only have limited code in order to pull source code from server and all the necessary settings/permissions in manifest. this way I'll not need to send out a new apk too often.
i found similar example here and someone mentioned about dalvik, but I have no clue how those work...Can someone please tell me if this is doable? and with some examples.
Thanks

Not Getting New Update is Available Notification in google play for my application

I Published an application in google play . But the thing is if i released an updated version of my Application the users who is having the older version are not getting any Notification from google play that New Update is available. If they go to the google play there they can see an option like Update.
Even though i increased the Version Code in the Manifest File.
This became a very big problem to me . So please help me to solve this problem.

U will have to program this yourself.
U can find how to do it on this link:
http://developer.android.com/google/gcm/gs.html
if read correctly u have to release a new version of youre app with this code in it. users who have that version get notifications in case there is another update