Develop Reference

What is the difference between apk built in ci/cd on gitlab and one built in Android studio

I have an Android project and it's on gitlab with ci/cd configured according to this article
https://about.gitlab.com/blog/2018/10/24/setting-up-gitlab-ci-for-android-projects/
I build debug version of the app both on gitlab and in Android Studio
The apk files are different, although their content are identical. The gitlab apk doesn't install on the phone(the play market protection error). The Android studio file does install on the phone.
Is there any meta data in jar (zip?) files? From what I see (by looking at the Meta-Inf folder) both are not signed. What could be the difference between them?
Please advise

how to build APK files for applications developed using Flet (python)

in flutter i can build APK files for Android applications using
flutter build apk
how to build APK files for applications developed using Flet (python)?

flet currently does not have support for mobile platforms. But it will be soon.
Take a look here.

Generate apk file from playground online

I have written a small test app on nativescript playground online, and I want .apk file of it. Is there any online tool to generate .apk file from playground, instead of having to install tns and run 'tns run'/'tns debug'/'tns build' on my local machine ?

No, it's not possible to generate APK from Playground.
If you don't want to setup Android SDK locally, you may try cloud build option but at least that requires NativeScript CLI / Sidekick setup on your local machine.

Phonegap remote build

I'm developing app in Sencha touch(Touch 2.4 && CMD 5) and packaging using Phonegap/Cordova for Android and iOS. I'm developing on windows machine with Android device(HTC) and iOS device(iPhone 5).
Initially i packaged the app with cordova, and with limitation of iOS build i keep working for Android build only. I added 5 plugins (Facebook, Network Information, Camera, FIle Transfer, Email Composer) using cordova and all working fine for android build. My latest Android apk file size is 3.8 MB.
Now i need to build iOS ipa as well, so i opted "Phonegap Remote Build Service" option. I clone my Sencha touch project and packaged it to Phonegap, added all plugins, mention the iOS platform in app.json and set remote true and add local.properties file with email and password set of paid adobe phonegap account. When i execute command "sencha app build native" , it did everything right but gave error of "Invalid email or password". Then i went for other option, i made zip file of phonegap folder and uploaded manually, and build on Adobe Phonegap Build portal, it provided me both the builds but with one big issue of huge size. Both files(apk, ipa) reached 37-40 MB.
Now i need help of different options which i can take(Other than iOS machine), how i can minimize the size of files. As locally cordova packaging providing me very lightweight apk file. If I'm doing something wrong in Phonegap packaging, please mention it.
Thanx in advance.

When you say manuall upload turns zip size to 37 - 40 MB ,i think it must contain library folder as well .
for Invalid email or password : - there must be some typo mistake only this is possible scenario i could think off.
Thanks

Android and Unity 3D game development

I am starting to explore the game development using unity 3d for android. I have downloaded the trial version of unity 3.3. I went through few tutorials.
I have one question that is not answered. In the normal apps which we develop using eclipse, we can deploy onto mobile by copying the apk file. What about unity 3d? How do I get the game onto my phone. I don't want to publish on market.

It is possible to transfer your assets to Eclipse. When it's integrated you can debug via your android phone. Be sure to read the tutorial on Unity's homepage. There is a step by step start-up guide and some more. Following links are worth looking at:
Getting started with Unity and Android
Official - Integrating Unity with Eclipse
Alternative link - Integrating Unity with Eclipse
It would seem that the official "integration" link is broken so I updated with a forum post that covers the same topic. However I recommend to try with the official link first.

Yes, you can simply copy the apk to your device and install it. Unity builds an apk file (and will optionally sign it using a keystore that you provide or let it generate for you). Once it has built that apk you can deploy it normally. You can even have it include a customized manifest in the apk that it builds if you want to (but it generates a nice one from your settings in the unity project by default).

There are two methods for this, as far i understand,
Using Build Settings--> Build, It builds the apk file that can be installed on your device using adb install <apk file path and name>
Using Build Settigs--> Build and Run. Which automatically installs the apk built apk file on your device if connected

go to file
-build
-select android platform(your pc has to have android development kit)
-save your apk

As it is still unanswered I try to close this question
First of all, current version of Unity 5.2 is much more powerfull than version 3.3. mentioned in original question.
What about unity 3d? How do I get the game onto my phone. I don't want to publish on market.
The same way. Unity allows you to publish build as *.apk on ocal machine and then you can just copy it to your phone and install it.
What is more cool, now you can debug your application running on phone. You have to install Unity Remote to the phone and run. Now you can set breakpoints and debug as normally.
If you change your mind and go to publish on Market - Unity will sign your *.apk
Hope this helps someone, good luck!

The Same way you generate the apk through Eclipse like that in unity you need to build the project. For that android sdk and jdk should be installed in your system and u need to show those path in the unity Preferences then u need a google keystore and need to sign in with that key store in the Publisher settings and then u are able to build the apk which will be store in your local system and you can copy that to your mobile and install the apk file.