Development for iOS

victoriaqb August 7, 2020 at 11:04 AM

Sberbank Online iOS testing
- Tutorial
Theory of testing is usually differs from practice. Today we want to talk about our practical experience in testing application's code which is used by millions of iOS users and about the difficult path that our team finished in order to achieve stable code.

Let’s imagine: the developers successfully convinced themselves and the business of the need to cover the code with tests. Over time, in the project were created more than a dozen thousand unit- and more than a thousand UI-tests. Such a large test base araised several problems, and we successfully found the solution for them.

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atimca June 18, 2020 at 06:54 PM

How to cook reactive programming. Part 2: Side effects
- Development for iOS,
- Swift
Despite the number, this is the third article about reactive programming. Today we are going to talk about how to handle side effects while using unidirectional approaches.

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atimca May 18, 2020 at 10:49 AM

How to cook reactive programming. Part 1: Unidirectional architectures introduction
Recently I wrote an article What is Reactive Programming? iOS Edition where in a simple way I described how to build your own Reactive Framework, and helped you to understand that no-one should be scared by the reactive approach. The previous article could now be named How to cook reactive programming. Part 0., since this is a continuation. I would recommend reading the previous article if you are not familiar with the reactive programming concepts.

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regno April 23, 2020 at 12:00 PM

Custom instruments: When signpost is not enough
- Tutorial
In our previous article, we discussed the reasons of unit-tests’ instability and how to make them stable. Now let’s look through a new tools for debugging and profiling which were introduced by Apple in iOS 12 — the framework os_log and instrument for performance analysis os_signpost.

In one of the sprints, we were tasked with implementing the generation of a pdf-document on the client-side. We completed the task. But we wanted to make sure the effectiveness of the technical nuances of the decision. Signpost helped us with this. Using it we increased he document’s displaying speed several times.

To learn more about os_signpost application technology, see where it can help you and how it has already helped us, go further forward.

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atimca April 14, 2020 at 09:38 PM

What is Reactive Programming? iOS Edition
- Development for iOS
There are many articles about Reactive Programming and different implementations on the internet. However, most of them are about practical usage, and only a few concern what Reactive Programming is, and how it actually works. In my opinion, it is more important to understand how frameworks work deep inside — spoiler: nothing actually complicated there — rather than starting to use a number of traits and operators meanwhile shooting yourself in the foot.

So, what is ~~RxSwift~~ ~~Combine~~ Reactive programming?

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victoriaqb March 26, 2020 at 02:10 PM

Signpost: When Breakpoints are not Enough
- Tutorial
Instruments for Apple's Xcode is a tool for performance analysis of an iOS application. In 2018 Apple introduced Custom Instruments — an opportunity to expand the standard set of instruments for application profiling. When existing tools are not enough, you can create new ones yourself — it will collect, analyze and display the data the way you need.

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ShifaMartin March 20, 2020 at 06:02 PM

The Worst Mistakes In Mobile App Development
Alright, so you have just planned to hire developers for a Mobile App which could potentially steer your business ahead. The reasons for your decision would be quite obvious on the surface. Mobile App development is a core part of today’s businesses. It provides a near-perfect platform to serve customers through the portable devices they own.

But it’s easy to be a sheep! If you really try to understand this market, you’ll realize that more than half of the apps fail to earn revenue, and a significant amount of them barely cross 1,000 downloads. As per a Gartner report, it was found that barely 0.01 percent apps will find financial success by the year 2018.

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AdBlock has stolen the banner, but banners are not teeth — they will be back

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ShifaMartin March 6, 2020 at 03:20 PM

5 Critical Myths Preventing You To Gain Revenue Through A Mobile App
It is quite observable today that every business requires to leverage the power of the internet and mobile to earn more profit and attract tech-savvy audiences.

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ShifaMartin February 21, 2020 at 06:45 PM

How 5G's Acceleration will move through the Mobile App Development Space?
- From sandbox
5G ( Fifth Generation Wireless Cellular Network) is not just a possibility anymore. The forthcoming of 2020 has unfold avenues for 5G browser capabilities in smartphones.

With the recent 5G rollout, it has been predicted that over 1.4 billion devices will be running on the 5G network by 2025 — accounting for 15% of the global total.

Source: Google Images

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msgeek December 18, 2019 at 10:00 AM

Get Moving with Xamarin.Forms 4.4
We were speaking with a customer last year that builds dozens of mobile applications every year. They said, «We cannot remember the last time we made a mobile app that did NOT include a carousel view.» Many of you have expressed almost identical sentiments to us. So, we are very pleased to introduce a new CarouselView control in Xamarin.Forms 4.4.0. Along with this we also have IndicatorView for displaying the pages or items in the carousel. As well as SwipeView for providing contextual actions to any element in a CollectionView. The release theme of getting things moving would not be complete without showcasing the new GIF animation support for images. Let’s begin right there.

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fpn November 20, 2019 at 09:39 PM

Cloud-based WebRTC streaming on DigitalOcean
Popular cloud hosting DigitalOcean has recently launched its new marketplace selling preconfigured images that can help to quickly deploy an application server. It’s much like AWS, but DO is for those already using this provider’s services. Let’s see how to deploy a simple server for WebRTC streaming with a DO account for a $10/month fee based on Flashphoner WebCallServer and how such a server can be of use.

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florianmarcu November 19, 2019 at 02:04 PM

How to Implement Tinder Swipe Cards in SwiftUI
- From sandbox
In June, we heard about SwiftUI for the first time — a totally new way of creating and working with UI elements in iOS and macOS (also iPadOS) apps. It felt like Christmas in the summer. It's new, it's declarative, it's sexy! And now, just a few weeks after iOS 13 has been released, we can start to use SwiftUI in all our projects. Let's learn how to use this amazing tool that Apple gave us, to create the classic Tinder-esque Swipe Cards.

In this article, I would like to show you how to achieve a Tinder-like card view and behavior (swipe to action), with just a few lines of code.

To achieve this, we need to do the following things, in order:
- Create UserView
- Create NavigationView
- Create BottomBarView
- Create SwipeView
- Put all this together inside ContentView
So let's get started.
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n0mo October 15, 2019 at 03:38 PM

MacOS 10.15 no longer supports 32-bit apps. What can you do?
On October 7, 2019, Apple released a new version of its Mac operating system, macOS Catalina. Version 10.15 contains many changes and improvements. One of the significant is the complete phasing out of 32-bit applications. As a developer of such macOS apps, what can you do? That's right, port the app to the 64-bit platform. Will the application work properly from the first attempt? Perhaps, it's possible. Depends on the complexity and amount of the code. But most likely, developers will face a lot of non-obvious errors, which can previously detected using PVS-Studio.

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DmitriyKotlyarenko August 16, 2019 at 05:36 PM

Modern Environment for React Native Applications
- From sandbox
In this article, we will consider the process of setting up a React Native environment using expo-cli, Typescript, and Jest.
Typescript will help us avoid development mistakes and write a more efficient mobile application.

Modern tools allow integrating Typescript into the development environment. We can also use VS Code that supports Typescript.

Integration with React Native will give us the opportunity to use the auto-completion service, code navigation, and refactoring.

Expo is a toolkit that simplifies the creation of native React applications. This tutorial will give you an idea of how you can quickly create native React applications using Expo.

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sub_null July 30, 2019 at 09:40 PM

Human pose estimation on images for iOS
Human pose estimation

A few months ago I came across one interesting open source project on the Internet — Openpose the aim of which is to estimate a human pose in real-time on a video stream. Due to my professional activities, I was interested to run it on the latest iOS device from Apple to check the performance and figure out if it is possible at all. It was also interesting to see how the performance of the neural network framework for iOS has been changed in the last years.

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Ronak_Patel July 9, 2019 at 09:03 AM

Why developers love to build native App?
- Development for iOS,
- Development for Android
In today's world, the rise and use of smartphones have reached to an extent and is continuing to rise higher. There are numerous things on which people are more dependent on fulfilling their daily tasks or usage. Millions of mobile applications are built by developers to make the lives of people more comfortable and convenient. There is a range of reasons to use mobile apps like — playing games, shopping, engagement on social media platforms, accessing news, and other functions.

For assuring that the application is working in a perfect condition, it is necessary to make sure that the development process is followed in a certain way while building an app. So why Native app development will be comfortable for your app and not Cross-platform development?

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sereje4kin June 13, 2019 at 01:45 PM

Top 5 mobile app development companies in the UK
According to Evans Data Corporation, there are 12 million developers in the world. About 350,000 of these software and mobile developers work and live in the UK including freelancers and IT employees.

How do you choose the best one among all this variety? The obvious answer — get going with a professional IT company. This will increase your chances to work with true professionals.

I’ve made my own research based on a variety of reliable resources like Google SERPs and user’s reviews, different independent media, including medium.com and aggregators, like businessofapps.com, Clutch, etc. and other independent sites. Based on the collected data, I’ve aggregated the total score for each of the 25 leaders, and here I represent a list of the winners: the top 5 software developers in the UK.

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msgeek May 28, 2019 at 10:00 AM

Xamarin API Docs: Open Sourced and Available Now
Today, we are happy to announce the release of all Xamarin API Documentation as Open Source! API documentation drives the IntelliSense experience while being one of the best ways to help developers achieve their goals.

Xamarin API Docs

Additionally, we have also moved the hosting of the following from their old Xamarin home to docs.microsoft.com:
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AbdulNatt April 17, 2019 at 01:32 PM

Top mobile app development companies
Looking for an app development company? I’ve searched for information about it and made this list. It might help to find an app development company to hire. The list contains basic information about each company included in it like company size, hourly rate, min. project size, etc. And I recently decided to upgrade the list to 100 app development companies.

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asantos April 5, 2019 at 05:19 PM

Particle systems: a Christmas story
Christmas has always been one of my favourite times of the year. For me, Christmas is a season that brings so much love, laughter, happiness, and other magical things into our lives.

I was born and raised in Spain, more specifically in Tenerife, a sunny subtropical island in the middle of the Atlantic Ocean just off the African coast. I have to say that Christmas in Tenerife is very different to my the last two Christmases I’ve spent in London since joining Badoo.

One amazing plus of living in London is that I have got to see snow for the first time in my life, real snowflakes falling from the sky. Just incredible!

Talking of snowflakes, I have an interesting story to tell you about something that happened to me one day in the office the last Christmas. It was right before I was heading home to Tenerife to spend a few days with my family.

It just so happened that last December I’d been assigned a very interesting ticket with the following description

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