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Small task for a [login to view URL] + [login to view URL] specialist

Please develop a very simple proof of concept App, that works both in Android and in IOS.

There are only 2 requirements:

1 - The purpose is to keep the App running in background.

In the background, the App must do some operation, like showing some iteration on the screen, or do some calculation.

When you put the App in the background, for example when switching to another App, and then come back to it, the background operation must not only resume, but it must keep working in the background, so I need to see that it did not sleep. The real purpose of this is to call a WebApi (in the real App). The App also should start-up at phone start-up. And even when the App is not open, it should do the background task.

Maybe the Nuget package [login to view URL] is an option.

2 - Use a slider control to let the user choose from some options.

I would like to use the Android slider which is availiable in the phone configuration, when you configure the date and the time. Or something similar, which lets the user choose from a control which assimilates a wheel that he spins.

Delivery must be done within 2 days.

DELIVERABLES: Visual Studio 2017/2019 solution with [login to view URL], [login to view URL], and DotNet Standard 2.x class library projects.

Please place your bids

Kĩ năng: Android, Xamarin, iPhone

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Về Bên Thuê:
( 28 nhận xét ) São Paulo, Brazil

ID dự án: #20889579

8 freelancer đang chào giá trung bình $110 cho công việc này

contact2phpsl

Hi I would appreciate if you please interact with me. I am a Xamarin specialist with extensive experience in developing mobile applications using C#, Net Framework, Xaml, [login to view URL] etc. Have a look at my work sa Thêm

$100 USD trong 2 ngày
(578 Nhận xét)
9.2
mobileexpert1235

Hi, I have read your description carefully I understood your want. Since 2012, I've started mobile application development for iOS & Android. In the meantime, I've learned lots of mobile programming languages such as S Thêm

$25 USD trong 7 ngày
(15 Nhận xét)
5.4
JinTai

Hello! For your business. I am very interested about your project. If you think something, I will implement as like your idea. Because I have talented skills for your project, you will be always satisfied so far. Your Thêm

$200 USD trong 7 ngày
(9 Nhận xét)
4.2
popov4sa

hello ! I have gone through your job posting and become very much interested to work with you. I am an expert in this field. I have already completed several projects like this. Awaiting an affirmative response from Thêm

$25 USD trong 7 ngày
(2 Nhận xét)
2.8
WhitebirdH

Deer Employer! I have read your details carefully and it seems like I'm the best fit for you. I am a mobile app developer with 5+years experiences . I have rich experiences in Android, iPhone, C++, Matlab, Java, Photo Thêm

$200 USD trong 7 ngày
(1 Nhận xét)
0.4
sunearthmoon

Hi Dear! Today have read your job, very interested it and think this project is for me. It's the most appropriate project I can complete perfectly. As a senior developer and earned rich experience for over 3 years Thêm

$50 USD trong 7 ngày
(0 Nhận xét)
3.4
rvtechsolution

Hi I am Android and iOS APPs expert having 7+ years experience and ready to develop a very simple proof of concept App, that works both in Android and in IOS. Please share more details. Kindly initiate the Thêm

$250 USD trong 10 ngày
(6 Nhận xét)
0.0
hassangraf

Hi, I'm a Full Stack Developer having more than 6 years of Professional Experience in Software React.js, React native, Mobile Apps development using react native. I assure you 100% quality work for Small task for a Thêm

$30 USD trong 2 ngày
(0 Nhận xét)
0.0