Some time ago we created an open-source image cropping library for Android. uCrop is a convenient tool for cropping photos that you can use for your project. Since its creation, the tool has received much attention from the GitHub community and has reached a leading position in the GitHub trending repositories list. As of September 14, 2020, there …
How We Created uCrop, Our Own Image Cropping Library for Android Read More »
Yalantis has released several apps with audio recording functionality. Halaa – Instagram for voice and video is the latest example of our work with audio technologies. Every time we want to add some cool visualization for music, however, we have to deal with a lot of issues. First, there are no simple and convenient Android …
Introducing Horizon, Our Open Source Library for Sound Visualization Read More »
Machine learning has been used for years to offer image recognition, spam detection, natural speech comprehension, product recommendations, and medical diagnoses. Today, machine learning algorithms can help us enhance cybersecurity, ensure public safety, and improve medical outcomes. Machine learning systems can also make customer service better and automobiles safer. When I started experimenting with machine …
Using Machine Learning Algorithm for Predicting House Valuations Read More »
With iOS 10, Apple expanded Siri’s capabilities to third-party apps. Now you can enhance your own apps with voice commands to provide your users with bot-style interactions. We’ve just finished developing an iOS application for one of our clients that integrates with Siri. The app allows clients of a consulting company consult with their managers …
This post is for developers who want to get started with Android NDK and want to know all the niceties of using it for developing in Kotlin. To see the whole picture, I suggest we start with the theoretical part. Then we’ll proceed to the practical part, with a detailed sample project written in Kotlin. …
How to Use the Android NDK When Writing an App in Kotlin Read More »
FFmpeg is a robust open-source framework designed for command-line-based processing of video and audio files, and widely used for format transcoding, basic editing (trimming and concatenation), video scaling, video post-production effects, and standards compliance. To date, it remains one of the commonly used solutions for processing videos on Ruby on Rails. Frei0r, in turn, is an …
What You Can Create with FFmpeg Filters and Frei0r Plugin Effects Read More »
API versioning helps alter an API’s behavior for different clients. An API version is determined by an incoming client request and may either be based on the request URL or on the request headers. There are a number of valid approaches to versioning. When is API versioning needed? API versioning can be ignored in certain …
API Versioning: Which Gem to Pick for API Versioning on Ruby on Rails Read More »
Angular was ranked the second most used technology after Node.js in the 2018 Stack Overflow survey. The reasons for such a high rank are clear: this frontend tool is equipped with robust components to help developers write readable, maintainable, and easy-to-use code. But despite all the strengths of Angular, you should understand that sometimes this tool …
When and Why Angular Is a Good Technical Solution for Your Project Read More »
As your business scales, it may reach the international level. In order to cater to the needs of a global audience and to provide your customers with user-friendly service, your Rails app will need to support multiple languages, currencies, and date and time formats. App internationalization is an old practice among developers, and there are …
How to Develop a Multi-Language Ruby on Rails Application and Take It Global Read More »
There are different levels of software testing. Here, we’ll take a look at unit, integration, system, and acceptance testing to see the whole picture. And we’ll focus on unit testing to see why it’s so important and which unit testing frameworks you can use. Levels of testing and why we need them 1. Unit …
I clearly remember the time when the whole world communicated via SMS: a few lines of text and infinite waiting until your friend finally answered. No delivery statuses. No typing indicators. Just you, silence, and a little excitement. While being quite romantic, this type of communication was kind of inconvenient. But then WhatsApp offered real-time …
Real-Time Features: Best Use Cases and Reason To Implement Them In Your App Read More »
Being responsible for all business logic and other sensitive operations under the hood, the backend of your app is truly the most essential part of your product. There are many factors that define the quality of an app, such as its ability to perform well and scale smoothly as well as the maintainability of code …
Golang and Node.js Comparison: Scalability, Performance, and Tools Read More »
Almost every app runs on the client-server principle. The server and client are connected through an API, which can be tested. To test the API, you can simulate multiple users accessing the app simultaneously in different situations. The software isn’t useful when it isn’t scalable and isn’t able to handle the required number of users. So …
How to Load Test an API to Ensure Your App Works Smoothly Read More »
Whether you’re developing a travel app or a fashion mobile commerce application, you need to somehow accept electronic payments for physical goods and services. Implementing an online payment gateway provides a smooth customer experience. Mobile shopping accounts for a large percentage of e-commerce payment industry retail sales in the US. By 2021, Statista expects 54 percent of …
Which Payment Gateway Integration to Choose for Your App Read More »
One of the most important steps to take when it comes to developing a successful digital software product is to pick the right tech stack. Why? Because creating a product is not just about designing a nice UI and convenient UX; it’s also about designing a stable, secure, and maintainable product that will not only win …
How To Choose a Technology Stack For Your Web App in 2021 Read More »
If we had a mobile app, we could send you a push notification alerting you about something new on our blog. Then you could check out what we’d prepared for you. Push messages delivery can be a great way to engage your app’s users. That’s why they’re a necessity for modern apps. But what exact …
Practical Tips on Adding Push Notifications to iOS or Android Apps Read More »
At Yalantis, we work on different types of mobile and web services every day – travel apps, transportation apps, social apps, health and fitness apps, and others. Even though they may be different in terms of the features they provide, these apps have one thing in common – they all have a client-server architecture, meaning …
How to Create a Restful API: Your Guide to Making a Developer-Friendly API Read More »
In this article, we focus on how to improve the workflow with code reviews via GitLab merge requests. We also talk about code review best practices we follow at Yalantis. Before we get to how to do a code review, let’s figure out what might happen if you ignore this important step. Developers on the …
How to Use GitLab Merge Requests for Code Review Read More »
According to the official Go documentation, to decode or encode JSON data we should use the Unmarshal and Marshal functions respectively. So in this manual, the terms marshalling and encoding are used interchangeably. In this post, we provide you with a guide and compare the most popular and effective fast encoding and decoding techniques in Go. …
How to Speed Up JSON Encoding and Decoding in Golang Read More »
When building a platform-like application, you’ll need to create an admin panel to manage all app data. There’s a plethora of tools and approaches that allow developers to create admin panels without hassle. But such a variety of ready-made solutions creates difficulties with choosing the most effective one. We’ve tried different tools for deploying admin …
How to Deploy Amin Panel Using QOR Golang SDK: Full Guide With Code Read More »
The modern app market dictates high requirements for the user experience and overall app performance. Your app should load fast, work seamlessly, and not crash. But no one can guarantee 100% protection from unexpected events. To find the root cause of bad performance or crashes and find possible ways to optimize your app, you should …
Best Tools and Main Reasons to Monitor Go Application Performance Read More »
As the top choice for creating the client-side of web apps, JavaScript remains one of the most popular programming languages. It’s the most popular technology according to StackOverflow’s 2019 Developer Survey and is the third most used according to PYPL. JavaScript — and the tools for creating JavaScript apps — continue to evolve. In this …
Swift has seen many changes since its release in 2014. It has become open-source and evolved a lot. Today’s Swift is a fast, modern, type-safe language, and it continues to become better with each major release. Moreover, when the Swift Standard Library can’t do something out of the box, the community can. Nowadays, there are …
Almost every industry uses real-time data analytics solutions provided by data science. This is especially true in e-commerce, sports betting, trading, custom marketing, and politics, which requires real-time updates on election results. Analytics solutions are designed to minimize the time spent making decisions. They have to be capable of collecting and promptly processing lots of …
How to Ensure Efficient Real-Time Big Data Analytics Read More »
The way you manage data in your app plays a crucial role in delivering a positive user experience. At the end of the day, it doesn’t matter how well your app’s interface is designed and how clean your code is unless your application is capable of quickly retrieving, processing, and delivering information. Moreover, all of …
Detailed Analysis of the Top Modern Database Solutions Read More »
Programmers are the authors of great builds just as writers are the authors of bestselling novels. But behind the scenes, there are always many people who contribute to the process. The best code – like the best products of any type – is the result of collaboration. All programmers, both senior-level software engineers and beginners, …
Measuring Code Quality: How to Do Android Code Review Read More »
Plugins help developers add features to existing programs and improve the development experience. But sometimes it’s hard or impossible to find a plugin (or an addon) for a specific problem like, say, styling XML layouts. Should you give up in this case and spend long hours on boring manual work? Or should you build your …
When building an app, a developer might have to synchronize data with backend, for example, to implement offline mode. With small amounts of data, most apps don’t require specific techniques and the simplest solutions work well. But when we’re speaking of thousands or more entities, issues might occur. Developers want to look into the matter …
How to Quickly Import Data from JSON to Core Data Read More »
As we know from a Google report on micro-moments, 70 percent of people abandon an app when it takes too long to load. That’s why your app has to be smooth and slick. UIKit performance optimization is one of the major ways to ensure that. In this post, we’ll talk about how to boost UIKit …
As we know, Apple lets users purchase goods and services in apps using their Apple IDs. But all in-app purchases need to be validated. Using your own server to communicate with the App Store is generally the best option for validating purchases in your application. Why? Because your app will recognize and trust your own …
How to Validate In-App Purchases On-Device and Through a Client’s Own Server Read More »