How to Create Apk Files on Androids

1. Make a personal keystore to store your certificate using JavaSDK. The certificate must be created by the developer. JavaSDK is installed by default on Macs but must be installed separately on a PC or Linux OS.

2. Once JavaSDK is installed, open the program and navigate to the keytool application. When you open keytool, the program will prompt you to enter a password for the keystore. Choose a password you can easily remember because you will need to enter it every time you sign an .APK file.

3. Export your application. To do this, right click on your project and select 'Android Tools,' then 'Export Unsigned Application Package.' Export the application to a directory and copy the location to your clipboard.

4. Open your keystore and sign your application. To do this, click 'Open' and navigate to your application directory. Execute the .SH file, the .APK file and enter your password.

5. Once you enter your password the application is signed. Upload the application to a server, install it on an Android device and publish it on the Android and Amazon marketplaces.