Roulette is a casino game with a wheel having numbers from 0 to 36. You must note that the American style roulette has a double zero. So, it has 38 sectors o.

1. Android Roulette Game
2. Roulette Android Github
3. Android Roulette Wheel Code

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With Android being the leading mobile platform in terms of sheer numbers, online casinos have optimised their games for use on Android smartphones and tablets.

For centuries, roulette has been one of the most loved casino games but in recent years, the development of gambling websites has made it possible to play the game without even leaving your home. Moreover, innovation in mobile technology is changing the world at such a fast pace that we can now enjoy real money games on the go – even all-time classics such as roulette.

Mobile casinos are a rather new invention and just the next step in the effort of gambling companies to make games like roulette, blackjack or slots more accessible for the customer. It all started with the rise of online casinos two decades ago when users had to download software packages on their computers in order to play real-money games on the Internet. Soon, the so-called instant-play platforms started to emerge allowing customers to open their favourite games directly in the web-browser. These Flash casinos were the perfect solution for people who wanted to play real-money games not just from their own computers but from work or from their friends’ home, for instance.

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The arrival of mobile casinos gave players the ultimate freedom – today they can access their favourite casinos on the go. While the first mobile games were awkward and difficult to play, the rapid progress in technology and app development led to smooth, fully functional games that are simplified, intuitive and graphically superior to anything we have seen before. Android users, however, may encounter certain issues when trying to play real-money games on their devices. There are fewer casino applications for Android than there are for its biggest competitor on the mobile platform market, Apple’s iOS. The reason for this is rather simple – Google Play’s long-standing policy against real-money gambling and betting apps.

Until recently, the store allowed casino games like roulette only in practice mode but now, there are some exceptions and you can find limited real-money gambling content for download. Still, many large online casinos offer Android apps on their websites – you just need to open the site on your device, download the application and follow the instructions for installing. An even better alternative is to play mobile games in the web browser of your phone or tablet – it is easy, quick and does not cost you money.

How It Works

Just like there are download and instant-play casinos for desktop, there are mobile casino apps and instant-play mobile casinos. Some casino operators offer Android users native applications which can be downloaded for free directly from the casino site. Usually, these apps come with a limited number of games and tend to focus on online slots, as these are the most popular casino games right now. There are also table and card games such as poker, blackjack, roulette and baccarat. The installation process, however, although automatic, requires manually allowing apps from sources other than Google Play in your phone settings.

But most Android users prefer playing roulette and other real-money games in the browser of their device. Many online casinos have optimised their websites for mobile use so that you can enjoy the same user experience on the go as would from a desktop computer. Moreover, there are now online gambling sites which were specifically created for touch screens and portable device. It is easy to recognize them, as they have a simplified design that resembles a mobile app and even if you open them on your desktop computer, they “feel” like mobile sites.

While casinos’ official applications are called native apps, these browser-based mobile casinos are known as web apps. They can be opened in various Internet browsers, including Safari, Google Chrome, Mozilla Firefox, etc. The games run in Flash and HTML5, so no download is required. In fact, the web app works like a native app, and with the arrival of the exciting HTML5 technology, it is believed to completely replace the native application one day.

Whether you play Android roulette via an app or in-browser, you will be able to access all functions and options of the original, desktop casino website. Due to the fact that most casinos now use the so-called omnichannel technology, you are able to switch from desktop to mobile and the other way round easily – from your phone, you can log into the user account you registered on your computer; you can make deposits and request withdrawals; you can manage your account and view the history of your activity, etc. From your Android device, you can also contact the customer support via Live Chat, enter live poker rooms and play various live dealer games, including roulette. In fact, you can do everything from your phone or tablet.

There are certain differences in the way you play casino games from a computer and from a mobile device. Usually, you will need to switch the orientation from portrait to landscape in order to play. This often happens automatically and you do not need to do anything special like changing some settings on your phone. The mobile games are designed to change their size, so they can perfectly fit the smaller screens of smartphones. In fact, the entire mobile casinos adjust their size, layout and design to match the size and other requirements of your device.

How to Play Roulette on Android

Playing roulette on an Android device is not entirely different from playing it on a computer. In fact, you may find it much easier in many ways. There are several small differences that do not affect significantly the gameplay and the user experience. The first thing you should do when you open a roulette game on your Android-powered phone or tablet is to switch from portrait to landscape. You will notice the game differs from what you are used to seeing on your computer.

The web address bar, the menus and navigation bars disappear as the entire screen displays the roulette betting layout. Instead of using your computer mouse to place your bets and spin the wheel, you will use the touchscreen controls. All important buttons such as Rebet, Double Up, Clear Bets and Spin will show up and all you need to do is tap once the screen with your fingertips. Of course, the aim of the game remains the same – you need to predict where on the wheel the ball will land. When you hit the Spin button, the roulette wheel will appear, covering most of the screen and thanks to the enhanced graphics of most mobile games today, you will be able to watch the ball bouncing and jumping on the spinning wheel.

Once the ball hits one of the numbered pockets on the wheel, the winning number is displayed along with the winning you receive if your bet was successful. The wheel is replaced by the table layout, so you can place your bets once again. The shifting of the screens is necessary due to the limited space you have on the portable device. Of course, this But most mobile casinos manage to successfully show all important details of the game in a convenient size without shrinking anything of essence. Depending on your preferences, you can play roulette either in RNG or live dealer format.

RNG Roulette

Most roulette games, whether mobile or not, are virtual games which recreate the classic roulette. Sometimes, they follow the traditional design, or they can add some modern details such as zodiac signs instead of red and black numbers. In any case, these games are “controlled” by a Random Number Generator. Instead of having a croupier who hosts and leads the game of roulette in a land-based casino, the game we play online is automated, “hosted” by a computer.

The result of each spin is not based on luck (and plenty of physical variables). Rather, it is determined by the Random Number Generator, or RNG, which is a sophisticated piece of software which generates random (well, almost random) sequences of numbers. Once you hit the Spin button, the software picks a number, associated with a particular result – 13 black, for instance, so whether you win or lose is determined long before the ball lands on one of the pockets on the wheel. These virtual, RNG-based roulette games can be played in either practice or real-money mode – some mobile casinos do not even require log-in to play in free mode.

Live Dealer Roulette

The other type of roulette you can play on your Android device is Live Dealer Roulette. These games are broadcast from professional studios or in some cases, from brick-and-mortar casinos directly to your smartphone or tablet. The sessions are filmed using modern high-definition cameras and through streaming technology, all you see on the screen is happening in real time. The games are hosted by professional croupiers who spin the wheel, make all announcements and notify all players when bets are not allowed anymore, when there is a winning, etc. They will also answer the questions you ask directly via the Live Chat.

Once the bets are placed by the players, you can switch between camera angles and view the spinning wheel, which is, as you probably know, the best part of the game, at least for most roulette fans. Depending on the software developer, you can find games with single or multiple camera angles. The betting range on certain games is also impressive with minimum bets of usually €1 and maximums of over €30,000. In addition, some live roulette games offer detailed statistics such as “hot” and “cold” numbers and many more.

Mobile Roulette Developers

Not all casino software developers create roulette games specifically for mobile devices. Some gaming studios prefer to just optimise their most popular games for phone and tablet use, keeping the original design as much as possible. The developers have different approaches to mobile roulette, but also very different offerings – some of them are relying only on virtual games, while others release both RNG and live dealer roulette variations.

It is important for roulette players to choose the right mobile casino, because some of the games may not be available in their area. Certain software developers also cannot offer their content in countries where they are not licensed or where online gambling is prohibited. Below, you can see some of the largest casino software providers that offer popular, high-quality roulette variations for Android. Along with games from Microgaming, NetEnt and IGT, you will also find interesting releases by SG Interactive, Play’n GO, and Dragonfish. If you are looking for good live roulette, you can also try the lobbies by Evolution Gaming and Extreme, which are the leaders in this segment.

NetEnt Mobile Roulette

NetEnt is widely known for creating online slots and table games of the highest quality. Apart from their massive portfolio, the Swedish developers also offer complete software solutions and an impressive diversity of games. Their virtual and live releases are perfectly compatible with all devices and you can find a huge number of NetEnt games available for Android.

Moreover, the renowned gaming studio is a pioneer in the development of apps specifically for Android and iOS. NetEnt’s Touch technology allows customers to enjoy the ultimate gambling experience on the go – the games are extremely user-friendly and feature great performance and speed while offering high-quality graphics and animations. Currently, Roulette Touch is among the best versions of roulette you can play from your Android device. It has a simple, modern interface that makes the gameplay even easier and more exciting than if you were playing from a computer. The crisp, beautiful graphics are combined with HD audio and a great European version where you have only a single zero pocket on the wheel. The table limits are from €1 to €500.

Other mobile roulette games by NetEnt are European Roulette, which is a standard variation with bets from €1 to €300, and VIP Roulette which is a preferred option for high-rollers because they can place bets of up to €75,000 per spin.

Microgaming

As the oldest provider of online casino software, Microgaming has a huge collection of games across various categories, genres, and styles. Many of them are also available on mobile devices and you can you play several of their roulette games on your Android phone or tablet. Currently, no live roulette games by this company can run on mobiles, but some of their virtual games are really fantastic.

Some players would argue that Microgaming’s platform is old and outdated and they would be right – but only partially. While they still have games in their portfolio that were created more than a decade ago, they are also constantly adding new titles that come with stunning graphics, beautiful animations and exciting functions. Among Microgaming’s roulette games that can be played on Android are the Gold series of American and European Roulette. The minimum bet you place is €1 and the maximum is €80. A newer version of European Roulette Gold is also available in some mobile casinos, as well. The maximum bet is €500 and more importantly, it features racetrack bets which are normally found only in desktop roulette versions.

IGT

IGT stands for International Game Technology and is probably the oldest developer of slot machines who entered the online casino industry. It started out in 1975 in Las Vegas with slot machines and video poker consoles but after the recent acquisition by Gtech, the company focused on innovative solutions for online and mobile casinos. IGT’s mobile games are built in HTML5 which makes them easily accessible from all computers and mobile devices.

You will find a smooth European Roulette variation by IGT which can be played on any Android device. It has standard table limits but appeals to everyone with its great performance and user-friendly interface.

Roulette is a casino game with a wheel having numbers from 0 to 36. You must note that the American style roulette has a double zero. So, it has 38 sectors on the wheel. But, in that tutorial, we are going to create a French / European style Roulette Game.

In the Roulette Game, players may choose to place bets on either a single number, various groupings of numbers, red or black colors, whether the number is odd or even, or if the numbers are high (between 19 and 36) or low (between 1 and 18).

Then, a croupier spins the wheel in one direction and a little ball in the opposite direction. When the wheel stops, we look at the position of the ball on the sectors of the wheel.

After that, the croupier pay players if they won their bets according some rules we will see in the second part of this tutorial when we will implement the bets on our Roulette Game.

In this part of the tutorial, you are going to learn how to display the wheel and how to spin it by using the Android Animation API available in the standard SDK.

You can also watch this part of the tutorial on YouTube :

Adding some depedencies

To make easier our development by reducing the boilerplate code, we are going to use the Butter Knife library. So, you need to add the following dependencies in the buid.gradle file of your Android Application Project :

implementation ‘com.jakewharton:butterknife:8.8.1’
annotationProcessor ‘com.jakewharton:butterknife-compiler:8.8.1’

So, the build.gradle file of our Roulette Game will have the following form :

Making the User Interface of the Roulette Game

Next step is to make the User Interface of the Roulette Game. Our UI will have the following views :

• A TextView to display the result of the wheel’s spin
• A Button to spin the wheel
• An ImageView to display the wheel which will be represented by the following PNG Image :

• An ImageView to display a triangle pointing to the sector of the wheel where the ball has stopped. So, we won’t use a real ball spinning on the wheel here. This is the triangle image :

It gives us the following code for our User Interface :

Like you can see, it is quite simple. A RelativeLayout with the Button at the bottom, the TextView on top and the wheel centered on the screen. Furthermore, the triangle image is placed just above the wheel with a-10dp marginBottom to be placed just on the wheel’s sectors.

Writing the Java code of the Main Activity

Now, it’s time to write the Java code of the Main Activity. First, we bind the views from the XML layout file to the fields of our MainActivity thanks to the Butter Knife API and its @BindView annotation :

Then, we need to create a String array to have a textual representation of label associated to each sector of our wheel. Finally, we define a static variable to represent the half angle of a sector. For that, we divide 360 degrees by the number of sectors (37) and then again by two.

It gives us the following code at this point :

Now, we need to find a way to spin our wheel. For that, we are going to use the Android Animation API. Simple, efficient and available in the SDK in standard.

To spin our wheel, we will use a RotateAnimation. The rotation will be from degreeOld to degree based on the center of the wheel. You have noted that we use degreeOld and degree integer fields.

The degreeOld field will store the previous position of the wheel in degrees compared to its initial position. The degree field will be used to determine the next position of the wheel after the rotation. To calculate this position, we use a random integer between 0 and 360. And then, we add 720 degrees to be sure the wheel will make two rotations at least before stopping.

Finally, we define the duration of the animation and we set a DecelerateInterpolator to make a smooth effect. The code is placed inside a spin method annotated with @OnClick annotation of the Butter Knife API to set this method as the OnClick callback for our Spin Button :

When the animation starts, we empty the result TextView. At the end of the animation, we display the correct sector pointed by the triangle on the wheel.

For that, we create a getSector method with a dedicated Algorithm. We iterate to move from the first sector angle to the last sector angle. It the position in degrees of the wheel passed in parameter of the getSector method in a sector, we get the associated text by accessing to the sectors array.

It gives us the following code for the getSector method :

It gives us the following complete source code for the MainActivity :

Playing our Roulette Game

Best part of the tutorial is coming. Now, we can play our Roulette Game and spinning the wheel. Once the application is launched, you will have the following starting screen :

Click on the spin button, and the wheel will spin. When the wheel stops, you will have the following screen with the result :

Android Roulette Game

That’s all for the first part of our Roulette Game tutorial for Android.

Roulette Android Github

To go further

In the second part of this tutorial, we will create the bets table and we will let the users to put bets before spinning the wheel. So, stay tuned !

Waiting that, you can subscribe to the SSaurel’s Channel on YouTube to discover more tutorials on Android development :

Android Roulette Wheel Code