Is it Possible to Create a Flutter App which has no Interface? - android

I would like to know if it is possible to create a flutter app which has no interface and just runs in the background like a background Activity. If yes, how can I accomplish that?

To summarize what Martin Marconcini wrote in his comment: No this is not possible.
But why? Because if it would be possible it could be used for spyware, viruses and similar.

Related

Charts/Graphs in Android Studio

I'm developing a dashboard app where I need several different charts/graphs. Is there any way that I can create them without any library? And if so, can you teach me how?
Thanks in advance!
If you want to learn how to use a chart properly I suggest you to watch this tutorial.
After that you can start something with live data and/or github arsenal implementations. But first start with the fundamentals. Hope that answered your question also.

How to make moving background in Android

I want Moving my application background in Android. but I do not know how to do it or what software I use to do.
My mean moving background such as this application : Timely Alram.
What methods do you offer? I am grateful your guides. <3
if you want to create an animated background easily you can
start learning to use AndEngine:
http://www.andengine.org/blog/
There's also a tutorial for a little game here:
https://jimmaru.wordpress.com/2011/09/28/andengine-simple-android-game-tutorial/
You can follow this tutorial and adapt the code to do the animated background.
Hope it helps.

is there a list of websites which have rest api

I want to develop some application for android, but struggled to decide what it should do :)
Is there a collection/list of web-sites which have REST api? So I can implement in in my app
and make use of it?
thanks!
Try taking a look at http://www.programmableweb.com/apis. I'm sure there others out there as well, but that's what I'm familiar with.

Overriding the look of baked-in Android features

The Android app I'm working on makes use of Android's baked-in speech-input feature, but I want to alter the look of the speech-input dialog to be more of an aesthetic match with the rest of my program. Is there a way to substitute my own assets? Is it a simple matter of overriding the layout xml that the parent class references? Thanks in advance for your time!
yes you can make a custom dialog and use setContentView(R.layout.something)
I am afraid it is as easy as substituting a layout.
You need to manage your own speech recognition flow by using the SpeechRecognizer class.
There's a lot of details involved in using it, but it appears that you can customize the UI experience if you can.

How to execute code at specific time

I'm trying to do an app that can execute some code at specific time (like a service) but time must be changed and setup by the app.
I don't want the whole answer, but i'm newbie, and if anybody knows the good way to acomplish it, and maybe some references i'll be very grateful.
Thanks in advance
Jeff Sharkey's android-sky App Widget includes an example of scheduling code to run at a certain time. It uses an AlarmManager to accomplish this.
Take a look at the Alarm Manager.

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