This course will introduce you to Ruby, as well as teach you about classes, methods, variables, data structures, loops, enumerable methods, and finishing touches.
At the very least, if you don't read the OS guidelines, then utilize a pre-built framework and don't deviate from its design much. Ionic is one example of a mobile UI framework. There are similar guidelines available for smartwatches, TV, VR, AR, voice interaction, etc.
Here are some key things to remember:
This process is very different depending on the OS. In my opinion, Android is the easiest and iOS is the hardest. Generally speaking, in order to develop for a mobile OS you will want to develop from the equivalent desktop OS (iOS = MacOS, Android or FireOS = Linux, Windows = Windows, etc). All mobile devices will need to be put into developer mode before pushing apps top them. Because the iOS process is so complex, I've linked to its documentation below.
Every app store is different, but they all have pre-flight checklists. Make sure you are following the rules, have tested your app, and have everything necessary before submitting your app. Up to 2 weeks are required for an app review and your app may not pass on first submission. Plan your release cycles and marketing accordingly.
If you have any relevant info you would like to include for other platforms, please let me know. FirefoxOS, Symbian, WebOS, Windows Mobile < 10, and Ubuntu Phone are considered dead platforms. Blackberry, Sailfish and Tizen lack a large user base in the USA where I am located.
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