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I'm creating an android application I wish to release commercially. Before doing so I would like to release a beta. What methods can I use to cause the beta to expire/become unusable after 12 weeks?
You can simply check if the current date is not larger then the expiry date, eventually checking it with internet time server. And make sure you save each time you check it to the preferences, so the user has no use in rewinding time.
Anyway, you can expect that if somebody really wants to hack your app he can do it. So it's no use to completely focus on avoiding that.
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I am a beginner in programming Android applications in Java. I want to know how to control or change something, for example, cut off the Internet on another application. Is there a way or suggestion. Thank you
I don't think it's possible unless you are the developer of both and remove the permission for both apps, see: Can an app give its permission to another application in android?
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Good evening, I am a student from Spain, developing an app in java about sports, that when it's time to workout it prohibits you to use other apps (such as candy crush, facebook...) until you finish it. I don't know how to translate this in code or even if it's possible.
I think it's not illegal, as long as you ask for permission from the user before installing?
I've seen some apps like parental control apps that do a similar thing, and I think it's the same, am I right?
Hi Alex it is possible just start a service when your app starts and check package name according to your prohibited lists
visit
also
and when app closed stop the service.
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For example,there is an app called System Analyst that shows me how much data has been downloaded in the current session.I'd like to use this data in another app,which I want to write in C or Java.
Is this a bad idea?If so why?
Usually it's better to go to the source of the information instead of trusting some other application. In the case of data received and sent, you can get them directly from the kernel by reading /proc/net/dev.
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I'm trying to make an app which will check the face of the user by using the front camera the first time it is launched and then save how that face looks.
After that, every time someone starts the app it will check if his or her face is similar to the one that the app saved on its first launch, and if it's similar, proceed, if not, quit.
I know that there is face recognition unlock for Android, so I hope it's possible.
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I looked about but were unable to find if anything of such exist.
Is it possible to construct a java program, which can read sudden strings from a chat inside a game?
It would be used to log sudden data to a mysql to comparison.
If any knows something of this sort, any direction is high appreciated.
You can't do that directly. You would need to have access to the game's methods in order to know when a new chat entry appears, and how to get its content.
Appart from that, as Kenyanke explains, some games might save a chatlog on your computer, yet it won't help you anyway, since you have no idea of when these logs get saved, or if they do get saved for that matter.