I am still learning C++ and QT for my own. Right now, I am planning to build a data backup app for Android, such as contacts, text messages. I find this kind of app has a large user base. What kind of API should I use to create such an app?
P.S. It is quite hard to start the app from scratch. thanks
I think your problem will be that on both Android and iOS the data for each application is sandboxed away and only available to that application... unless your app asks for *all* of the permissions. Even then, it may only be possible to do on a rooted device....