Development for Android *

The story of another ban.

Have you heard about bans on apps and developers in Google Play? This is just such a story. It’s also an attempt to collect similar cases into one place and offer some kind of plan of action to prevent Google’s unpredictable actions. It isn’t fair to be banned for the legal use of free material. Personally, I like the idea of content licenses such as CC BY-SA, which permits any use, including commercial. Thanks to such licenses, we developers have websites like StackOverflow, where I’ve been elected to be the moderator. Unfortunately, companies like Google don’t respect the ideas behind these licenses. Here's my story.

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.

In 2017, Google declared Kotlin as its second official language for Android application development. The language itself proving to be a modern, intuitive and pragmatic programming language. That’s why Kotlin's app development community is growing at a fast pace. For android app developers, using Kotlin with Java can reduce excessive boilerplate code which is a huge win for them.

In order to heighten productivity, Kotlin language comes with amazing functional features that support Java interoperability. It has effectively improved the coding experience of developers by introducing concise expressions, abstractions, and improved syntax.

I frequently hear questions like "How to implement authentication in an Android app?", "Where to store a PIN?", "Hey man, will I be secure if I implement an authentication feature in such a way?" and a lot of the kind. I got really tired answering these questions so I decided to write all my thoughts about it once to share with all questioners.

Every day we hear about new budding software programs. With the rapid advances in the software development industry, new players entering the market and have captured a large segment of the market. So, when you need to track business projects, handle the allocation of assets, and solve other IT challenges, you need help from the top software development companies. However, it doesn’t mean that you should select a software development company on the basis of how appealing it was once. Today, people prefer to check the full profile of a company first and then decide to get their service.

To ease your pressure down, listing here some of the internationally acclaimed software development companies from the development niche. This list has been curated on the basis of a variety of reliable resources like Clutch, GoodFirms, Google SERPs, user's feedback & reviews, different independent review firms including medium.com, themanifest.com, etc. Based on the collected data, I’ve assigned the total score for each of the 10 leaders, and here I represent a list of the top software development companies that are doing best in their domain.

List of the Top Software Development Companies

There is a good practice to make your application beautiful and live, and nowadays there are a lot of tools and ways to achieve this. One of them is Shared Element Transition.

In this article I’ll cover a few mistakes which have cost me a lot of time; I’ll show how to avoid them if you decide to implement this kind of transitions with Fragments on application.

This article aims to show how to use Kotlin Coroutines and remove Reaxtive eXtensions (Rx).

Benefits

To start let's consider four benefits of Coroutines over Rx:

Suspending over Blocking

To run non-blocking code using Rx you'd write something like this:

Observable.interval(1, TimeUnit.SECONDS)
    .subscribe {
        textView.text = "$it seconds have passed"
    }

Which is effectively creating a new thread. Threads are heavy objects in terms of memory and performance.

Both are critical in the mobile development world.

You can achieve the same behavior using the following snippet:

launch {
    var i = 0
    while (true){
        textView.text = "${it++} seconds have passed"
        delay(1000)
    }
}

Essentially, Coroutines are light-weight threads but we don't create any real thread.
Here we are using non-blocking delay() function, which is a special suspending function that does not block a thread but suspends the Coroutine.

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.

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?

Before reading this article, it is recommended to read the previous one: Audio over Bluetooth: most detailed information about profiles, codecs, and devices / по-русски

Some wireless headphone users note low sound quality and lack of high frequencies when using the standard Bluetooth SBC codec, which is supported by all headphones and other Bluetooth audio devices. A common recommendation to get better sound quality is to buy devices and headphones with aptX or LDAC codecs support. These codecs require licensing fees, that's why devices with them are more expensive.

It turns out that the low quality of SBC is caused by artificial limitations of all current Bluetooth stacks and headphones' configuration, and this limitation can be circumvented on any existing device with software modification only.

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.

With a variety of new tools and features announced at Android Dev Summit, special attention should be given to the In-App Updates (IAUs) API allowing developers to increase the speed of delivering features, bug-fixes and performance improvements to active users. Since this feature was finally released after Google I/O 2019, in this article I’ll deep dive on IAUs API, describe in details recommended user flows and provide with some code samples. Moreover, I'll share some experience of IAUs integration in the Pandao app, a marketplace platform for Chinese goods.

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.

With the recent progress in Neural Networks in general and image Recognition particularly, it might seem that creating an NN-based application for image recognition is a simple routine operation. Well, to some extent it is true: if you can imagine an application of image recognition, then most likely someone have already did something similar. All you need to do is to Google it up and to repeat.

However, there are still countless little details that… they are not insolvable, no. They simply take too much of your time, especially if you are a beginner. What would be of help is a step-by-step project, done right in front of you, start to end. A project that does not contain «this part is obvious so let's skip it» statements. Well, almost :)

In this tutorial we are going to walk through a Dog Breed Identifier: we will create and teach a Neural Network, then we will port it to Java for Android and publish on Google Play.

For those of you who want to see a end result, here is the link to NeuroDog App on Google Play.

Web site with my robotics: robotics.snowcron.com.
Web site with: NeuroDog User Guide.

Here is a screenshot of the program:

Google loves easter eggs. It loves them so much, in fact, that you could find them in virtually every product of theirs. The tradition of Android easter eggs began in the very earliest versions of the OS (I think everyone there knows what happens when you go into the general settings and tap the version number a few times).

But sometimes you can find an easter egg in the most unlikely of places. There’s even an urban legend that one day, a programmer Googled “mutex lock”, but instead of search results landed on foo.bar, solved all tasks and landed a job at Google.


The same thing (except without the happy ending) happened to me. Hidden messages where there definitely couldn’t be any, reversing Java code and its native libraries, a secret VM, a Google interview — all of that is below.

Navigation in developing Android apps is quite important and you should think twice what library suits (or your own solution) most and how it will be convenient to use when the app becomes bigger. Also, it might be good to think about how easy it will be to change your implementation to another one.

If not to take into account releases for Android and a dozen of abandoned projects just before they were ready, then yes, it is our first game appropriate for more than one platform. How did it all start? Very simply. We worked on another project, let’s call it “project A”, and we’d been working on it for a long time when we decided to make a game during a couple of months and use it to train our marketing skills, and then immediately release our “project A” when we would be more experienced in the promotion of games. But the plan failed and “project A” was kept untouched for the whole year. But this story isn’t about “project A”, it’s about a logical game called «Cubicity: Slide puzzle».

The mobile app developers are exceptionally intrigued by conveying 100% fulfillment outcome for the entrepreneurs. By having top 10 mobile app development companies, it is crucial for working with an effective outcome and does the worldwide system. In this way, get assistance from the professional mobile app developers and grow the business in like manner.

Every year there are a lot of articles dedicated to Valentine's Day. I also decided to get involved in this topic and create something original and unusual. The idea was to create a simple Android application with hearts that would have their physical models and interact with each other. Then I added text, sounds, particles and some other effects. The resulting app was working and quite original! In this article I will describe the creation process, as well as the capabilities and pitfalls of the libgdx library.

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(originally published on Medium)

Flutter provides a modern react-style framework, rich widget collection and tooling, but there’s nothing similar to Android’s guide to app architecture.

Indeed, there’s no ultimate architecture that would meet all the possible requirements, yet let’s face the fact that most of the mobile apps we are working on have at least some of the following functionality:

1. Request/upload data from/to the network.
2. Map, transform, prepare data and present it to the user.
3. Put/get data to/from the database.

Taking this into account I have created a sample app that is solving exactly the same problem using three different approaches to the architecture.