How to distribute apk files to my friends?
I assume you are using Android Studio for application development.
Follow these steps:
Go to "build" from the navigation bar in Android Studio.
Go to "build bundle(s)/APK(s)" from the drop down that appears.
Click on "build APK(s)". You will get a notification box at the bottom right of your screen.
Click on "locate". Two files will appear. One is a "
.json" file and one is an ".apk" file.Send these files to your friends on WhatsApp and tell them to download the JSON file and install the APK file. Now your application is running.
You are done.
Follow these instructions (read from where it says Compile and sign with Eclipse ADT), then email him the apk! He'll need to put in on his phone's SD card and install it from there.