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WatchOS 6 app with websocet and bitmap

The objective of this project is to write a simple Apple WatchOS6 application (for Apple Watch all series) that connects to a binary websocket server, receives strings and images, and deals with those received elements in the UI.

There are two main aspects in the technical development of this application:

- the application needs to use URLSessionWebSocketTask, now available in watchOS 6, to connect to a websocket.

- the application needs to create, handle, merge and draw bitmaps.

A demo of the application is available at [login to view URL]

The attached zip archive contains the [login to view URL] example. The objective is to natively "translate" and "port" the logic shown in this HTML example. This html page contains the logic (100 lines of javascript) that needs to be developed natively with WatchOS6 in the app.

The application has a welcome screen with a connect button. When this button is pressed, the websocket is opened against the server (IP addresss: [login to view URL], port:7684, protocol: inout). If the connection is successful, the user accesses the main UI.

In the main UI, the websocket can receive strings with ball bounces. The format is:

inout x y timestamp

The two buttons "previous" and "next" can be used to navigate the history of bounces.

If the user press the court, a request to the websocket server is made in order to receive the jpeg 240x240 image of that specific bounce. The received jpeg image is shown in fullscreen on the UI.

The first byte of the websocket message is either 1 for a string or 46 for a jpeg image.

Requirement environment and tool: watchOS 6, Xcode 11.

Additional requirement: The application should be native and should *NOT* use a framework such as native react. No external library or third-party block should be used. It's a requirement to use the watchOS 6 websocket (read this link: [login to view URL]). Also, the elements ([login to view URL], ball*.png for each bounce) must be prepared, merged and drawn in a single 'offline' bitmap which then should be rendered in the UI.

I estimate one day of work to complete the project if you have the right experience of Apple Mobile app development.

Evner: Apple Watch, iPhone, Mobile App Development

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Om arbejdsgiveren:
( 24 bedømmelser ) Palo Alto, United States

Projekt ID: #22732993

Tildelt til:


Hello Gregoire G.! How are you? My name is Victor Bozelli Alvarez and I have a degree in Computer Science from Mackenzie Presbyterian University. I am graduated in iOS Developer from Apple Developer Academy. I have ex Flere

$100 USD in 7 dage
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8 freelancere byder i gennemsnit $182 på dette job


Hello, I am not being unreasonable, but if you didnn't find anyone, please contact me for the project with the time and budget that i have mentioned. iOS programming is not like web, so it isn't simple, to setup a pro Flere

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Hello My Name is Arc,I am a web developer hire me,lets talk about it and I will do my best in this project.

$45 USD in 7 dage
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Hi I am iOS and Android APPs expert having 7+ years experience using objective-c and swift programming language and ready to Build Apple WatchOS6 application that connects to a binary websocket server, receives st Flere

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$$$ Good day. $$$ Hi. I understand correctly your requirement. I am a Mobile developer you are looking for. I am having 8+ years of experience in Mobile app development. Also, I have expertise in Xcode(swift, object- Flere

$55 USD in 7 dage
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$90 USD in 6 dage
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I am a Java and JEE Software Architect having more than 18 years of experience across various software and hardware platform... I have one year of experience in watch OS APP development... If you give an opportunity to Flere

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