1. Introduction to the Course: Hello. Welcome to the summering good ones. You for Android and IOS cares. My name is under the roses on building moral obligations is my life have begun in windows on droid and iris applications for the past four years? Cody wants for Android with Java on another. For IOS with objective sear. Swift is good, but it takes a lot of time in that. A lot of effort. By the end of these courage will know how to create and rode on iris sobs, sharing most of the gold. You will learn the basics of the C sharp languish. You'll have 100 great on Android and IOS applications. Using C shot, you will learn how to share the seizure code between bold platforms. You will learn to implement cloud based services into your raps on many more things. I designed these curves for the mobile developer who wants to build for both Android and IOS as quickly and effective as possible. This is also a great curse for those who are looking for a job. Just picture yourself. You can feel the position often I us and an android developer at the same time, with the same amount off effort. You can kind of, like, get baked twice, right? Please feel free to look at the curse description so you can be certain that these jerseys for you. I look forward to see you inside. 2. Intro - Welcome!: Hello. My name is gonna go process and I'm going to be the instructor for the Gers. I want to welcome you. I want to let you know through things that will be very careful for you throughout the entire occurs. First, police feel free to ask me whatever doubt you have 12 occurs either in the discussions of the lectures or they have a message for you to me. Second, please also feel free to post whatever you warned regarding summering off the discussion. So the lectures this way you interact with other students on we'll learn new things. Whether it's some use that have just come out about summary or the screenshots of your new summering applications, we can all interact and we'll learn together so that for her to do see you inside 3. Intro - What is Xamarin?: Okay, so let's dive in into this summer anchors before we start coating and we start learning how to create android and IOS applications with one single code. We should first understand what Sam Arrhenius saying have a better understanding off how somebody is trying to sold three main problems. So the three main categories were products that Semmering the suffering is the someone Platt firm, the summering test cloud, and someone insides This tree Products from Sam Marine try to fall three things. The 1st 17 platform tries to be a better way for developers to build applications. Summering Test cloud is a better way, according to some Marine, for you to test your applications, and the 3rd 1 to someone incites is a better way for you to monitor your applications. So somebody in sexually trying to solve this three problems with it with this tree offerings for the developers to be more effective when it comes to building testing on monitoring the raps 4. Intro - Xamarin Test Cloud: So we've already talked about the three main offerings that summary Haas. For developers to build the drops, to test better the wraps and to monitor the wraps better. Let's now talk about a little bit deeper about what someone test cloud is. Well, the seven test cloud allows developers to test the raps on over 1000 devices. These are real devices from which they can select from manufacturer operating system. Even popularity off their target market on actually test their abs so they don't need to have so many devices available for day to actually know how it performs in different kinds of devices. Seven. Test Cloud also allows developers to precisely analyze their APS performance so they can understand in a better way where there are bottlenecks or worthy. I B is getting a little flow, and it's very simple because you actually have screen shells and video player back from when your application was running on the device so you can go step by step and see exactly warrior up. He's performing a little bit. Well, not on the positive side. So seven Test Cloud mainly allows any developer to have access to thousands off devices so you can test your obligation in a very different kind of devices. And that works very well known Android since there are so many devices, so you can actually, no. When is Europe not performing good enough? So you may take the right decisions. 5. Intro - Xamarin Insights: So in the previous lecture, we talked about the summering test cloud. Let's no talk a little about the summering Insight service. So someone insides helps developers improve their APs, thanks to real time monitoring so you can actually at real time gonna turn with precise detail error reporting to your applications with a single line of gold. So seven insights provides reporting about crash and issues with your applications. It monitors sessions and users. It is, of course, bill with Dark Net and it's secure and privates, thanks to its precise detail reporting. When you looking into your report, you can actually understand if there were any crashes and the identity of your users. What type of issues on warnings are occurring during your application so you can actually improve your application? It's It's quite simple because when you start understanding, worry applications failing when your application is crashing, it's easier to understand. Wild line of code may have caused that ever someone incites. It's not just about every reporting. It can also help you understand your users. What so Westboro ations they're using which devices they're using, what issues they've been experiencing on what activities they've been using during their sessions, so you can actually understand how your users are interacting with your application so you understand what feature from your application is and what's used. For example, another feature of the summering insights is that you're actually able to easily track and report any event in Europe. This actually helps you notes on Lee to build reproduction steps when a crush a curse, but also lets you investigate exactly how Europe is being used. Finally, you can, of course, connector applications to a variety of external services. Such a scant fire. Get hope, keep shot visual studio line and slack so you can be immediately notified with nature is happening or when an issue is securing repeatedly, and these will help you identify errors much, much quicker. 6. Intro - Xamarin Platform: Okay, so we've talked about summary test cloud. That is a better way for developers to it as the wraps. We've talked about the summering insides, which is a better way for developers to monitor the raps. Let's just start focusing on the summoning platform, which is the one that we're going to be using throughout the entire curse. So someone platform is a better way for developers to build their APS. That's what someone says, and it's actually quite true. You know, with seven platform, you can actually share your code across multiple platforms on by multiple platforms. I mean, I us android windows on dMarc applications. This will all share the same C sharp code base, so you'll be using the same language. The same may be ice the same data structures on each off this blood from you Build an Irish , uh, on up once, and you run it on IOS and android a windows and I am Mark device. Now someone plot from uses. See shark and let me worry you, you may fell in love with C sharp throughout. The curse now would see sharp. You can, of course, do anything that you can do with Objective C or Swift on IOS and Javal Mandroid. And, of course, he Chapman Windows and Objective. Since we've done Mac, the main point is that whatever you think you're able to do with any of those languishes, you can actually do it and see sharp as well. And it's quite simple. And you may think, Oh my God, I already learned three. After I already learned Objective Sear I already learned. Gala, do I have to learn? See chart now? Well, let me tell the little secrets when it comes to programming, it's not about learning a language. It's about learning how to code. Want to know how to code? You can code in any language. You have to understand data structures a little bit about the same tax. But that's why I'm here. I'm going to walk you through all of those things Now with seven platform. Of course, you can't native you I native ap I access on because of these. Your op performs natively because it is native. It has native performance. Now what does this mean? This means that if you create a tax books when you wrote it on an android device is going to look at the tax books looks on an android device on. If you run into an IOS device, it's going to wrong. It's going to work as a textbooks or in this case, text field looks on IOS device. So it's going to have native you are the AP eyes that you have on each of these platforms are actually used. Someone is not creating in the FBI is just accessing the native AP ice. So the performance East Action native because you're actually using those native AP eyes all of this Can't it all be achieved with other solutions? Because most of the other solutions for multi platform development all they do is create HTML Web based applications. And Daddy's never native, so they never have made a performance which you can achieve with Samarie platform. 7. Xamarin Platform - The C# Language: Okay, so we've already talked just a literal about each off the three main products that summering offers submarine test cloud for you to be able to test your application of many devices somewhere in the insights for you to be able to monitor your applications and something platform and summary blood from is actually the one that we're going to be focusing because it's the one that actually allows us to create applications. You see one single code on deploying it to different platforms. So, like I mentioned before, we were going to be using C sharp as language for your mobile app development. And I mentioned that anything that you can do an objective C and slipped for IOS or Java for Android, you can do it on C sharp and in fact, see sharp hasam advantages over those languages. For example, in C Sharp, which have strong types. This means that when we have a collection, take a look at this list off free item. This is a collection off feet item, so having this kid collection, we will be sure that in that collection there's nothing else other than three items, so I don't need to be casting or commenting my code to understand what that list is about because I know what that list has inside of it. Another great advantages language level a sink and facing justice stands for asynchronous programming. So it's in Objective C Street in Java, a synchronous programming request, cool bags and manual bookkeeping. See, Shirt has language level support for a sing programming. That is just amazing. I mean, take a look. For example, at this second method in here, well, I have to do is market with an ace ing operator to make it a synchronous. And when I want to coal and a sing method, all I do is use the away operator to wait for this to end before it moves forward to the next thing. And the will, of course, took about this in more detail becoming lectures. But I'm just giving you a glance of what C Sharp allows you to do another great thing about six copies. First glass function in Java for android land is are just on existing in objective See London Lambda are really, really weird and we'll objective sees weird landless are even worse now in C sharp, Lambda Lambda are just so simple they couldn't be simpler. And I'm going to show you an example of lamb This in the coming lectures. Just so you know how simple using lamb this can be with c sharp. So to sum up in these lecture, really C sharp is amazing. And if you were doubting about a But I don't really know what Jave and you could do this and never will. You can do the RNC sharp as well, I assure you. And the same goes for swift or your objective C. 8. Xamarin Platform - Sharing Code Between Platforms: Okay. So in the previous lecture, we talked about C Sharp as a language for your mobile love development. Let's not talk about how you can share that seizure code everywhere, so we're going to be using the same languish. We're going to be using the same AP eyes and data structures so we can actually share an average of 75% off op code across mobile platforms. This means that we can have 75% code that will work in IOS Android on even Windows applications without doing anything else that's 75% off. Our code will just work. Now, these 75% code could be at logic. Most of it should be ABM logic. What is going to be happening throughout the entire application, no matter what blood from we're in, But it could also be shared. See shop user interface code. So we may find the you I with C sharp. We can, of course, use a designer, but we could use the show to define the user interface, and these would actually improve the amount off Kota we're going to be sharing throughout each of our applications, no matter the platform now At the end of the day, you will also need some platforms. Pacific C Sharp for some very platform and specific features on this could bury from three D touch on IOS or cortana and Windows, or some of the very thing many things that you can do on Android that IOS doesn't allow you to. So these would be platform specific C sharp, because thes are platform specific features. But you can still implement that throughout your entire application and differentiate it depending on which Platham you're running your application into. So at the end of the day, you can finish the developments or of your application and have shirt projects that have the logic or assured throughout each of the projects. The Iowa is the android. Maybe the Windows application. You could have PC else or portable class libraries that exist in dot net for you to be able to share or implement this libraries into each of your projects on, we're going to talk just a little bit about summer informs, which will actually actually allow you to the fine native you. I on actually share up to 100% Koth throughout your entire applications. Nomar of the platform. We were going to be focusing on a summering as a summary for iris summary for Android, and we'll actually be able to share up to 75% code. I will Jaws bitter, finding the the interfaces differently, and we're going to be implemented platform specific C sharp for platform specific features . 9. Xamarin Platform - The IDE to use: Okay, so now we have a very good idea of how we're going to share co throughout all of these platforms, or maybe just the U. S and Android. In our case, let's talk about where where are we going to be building this applications? Well, in the next chapter, we're going to be getting ready for these on were actually going to be using summer in studio because I'm going to be using a Mac and the only way I can build IOS and Android abs with Samarie in the magazines with Summer in Studio. However, we may use visual studio in the future in Windows because we actually can official studio. If you're not familiar with it, well, he's just the best idea out there. So, officials, do you have some great amazing features. The best, when I believe, is intelligence, which just makes life so simple about are completing your code. But there are a lot of features a professional studio that I lof starting with July. It's just I don't know, it's it's it's cold. But, you know, if you have a Mac you're gonna need in seven studio I need actually comes free with with summering in the next Lectures were going to be talking about where you can get summering. Bear with me, but Semmering Studio comes free with Samarie on If you have Windows, you have bowed options. You have someone in studio on visual studio. If you can visual studio, go hang, use its. In fact, I'm going to be explained how to install the summer imploding into visual studio's. You can start developing native IOS and Android applications in visual studio. That's that's just amazing. Um, yeah, that's it. So, without further to do, let's go right C sharp. I'm wrong. Our applications on up to 2.6 billion devices that that's just nonsense. But it xray because we're going to be writing applications in Tallinn C sharp, and this code is going to be shared throughout IOS and Android on. Eventually we could implement Windows, Mac and more and buy more. I mean, apple watch and road, where I'm Windows windows standings just everywhere from your wrist to our gigantic screen to holo gram. So someone in this amazing let's get started 10. Getting Ready - Downloading the Tools: Okay, so now that we have talked about what summering platform is, how I can help you create IOS and Android applications using C Sharp, let's talk about getting summary in Ready in your PC Now for you to actually purchase someone you have to go to store the suffering that calm as a lake. One of these programs Sorry, but don't worry. Don't worry. You're saying a Porteous purchase. What's wrong with song? Don't worry. If you want to purchase, you can purchase an indie version for 25 a month business version for a house in the year or enterprise for 1900 year. But you can always try someone started Vision, which is an amazing a vision of summering for free. It actually allows you to do everything that you can do with summer in. You can build applications for both IOS and Android actually used either summering studio or official studio on your Windows PC. Deploy two devices. It just doesn't allow you to create huge ups. You know, it's very small abs, and it's going to work perfectly for the scars. So if you tell if you are ready to purchase any of these programs, from summary, and you can just go ahead and try the severance tradition on Download It on Your Mac or in your Windows PC. One thing to keep in mind is that the free version of Summering actually combs with Visual Studio 2015. So if you have visuals to your 10 15 chances are that you already have the summering free position. So either you have already downloaded a free admission. Or you have to describe to one of those programs you go ahead and navigate to summer in the come click on Download on. We will be able to download some money for either your Mac or your Windows busy so all it's going to ask for a couple of things about you and you can click on download stammering for your operating system downloads going to start and will just live it downloading in the next lecture. We're going to walk you through the installation of summer in getting ready on your Mac, and we're also going to do it on Windows for you to get summary ready on reaching the studio 11. Getting Ready - Xamarin Studio on Mac OS X: Once your installation is finished, you'll actually be able to go ahead open somewhere in the studio. From this put lights, you can search it through this polite. You just have to press command space. You can start typing summary, and you will see someone's through right there. Now if you go to new solution, you can actually create Chris blood from implication on IOS application on Android application. Or you could even create a dog named application something like council projects or a shape brochettes or even a portable library. And you may not know exactly what the's all is. We were actually going to start working with C Sharp with a consul application. So this is actually the first seizure project that we're going to be creating during these girls. Also, we're going to be checking out will be about portable library supportable class libraries, which will allow us to creates certain packages that will work throughout applications throughout platforms. So we that for there to do in the next section of this, Kurds were going to finally start coding some see chart 12. Getting Ready - Installing on a Mac: So once it download is finished, all you have to do is double click your DMG file or your exit file. If you're in a Windows machine and something like this will pop up, of course it's going to different little bit from Windows Teoh Mark. But you just have to double click these taller and in my task, for some permissions, you just like J. Okay, go ahead and do whatever you have to do, and this window is going to put up off course. You have to read the license agreement. If you agree to it, check on. I agree to the license. Tres Anchalee continue. It is going to tell you which protects Jewish to install. We're just going to be using summary nine years and someone android, so I'm going to uncheck summering Mac Unlikely can continue. It's going to tell me where it's going to install, Likely can continue. It's going to tell me what things are going to be installed will continue and it will start downloading things. I'm going to live this installing. Of course, you can do so as well. It's when you installed the address. This decay. The summer in Studio your I d and, of course, the extensions and product summering android and sovereign IOS for you to be able to create those kinds off applications as well. So in the next lecture, we're going to talk about how to get started with someone studio. 13. Getting Ready - Visual Studio on Windows: So let's no talk about how summering is ready on your windows PC once you have installed both summary just like we did on the mark. And make sure that when you install visual studio you have summering checked. You should be able to go ahead and open visual studio. Yeah, eater, Enter Price or the Community edition, which street Quick. A new project either from start or from file New project, and you should be able to see these we knew right here and to the left side. You should be able to see both IOS and Android options for you to create your mobile applications. Now, this is particularly amazing because I'm a visual studio. That's Microsoft's property, and I actually can create on drawing applications and I US applications. Now these disposable be kills. Summer in is installed on my windows PC as well. Now, in just in case you don't want to build in your applications on Mitchell Studio, you can go ahead and look for summer in the studio, which should be installed on your PC if you follow the instructions and it's going to be very similar off course, somewhere in studio is not as powerful especial studio. Well, the good thing about summer in Studio is that it runs on both Windows and Mac. So there's version for Mike as well as for Windows. And in here you can always create a new solution. And here you will say, if you wanted to be cross cross blood for or Android or just another. 14. Getting Ready - Installing on a PC: Okay, let's no talk about how you can get some Marine into your windows PC. So the first thing that you need to do use download visual studio like I told you in the previous lectures. Maybe the community edition, which is free. Well, you have to do then East. Once the XY file is downloaded, he's double click it, and the installer will actually launched. Now, if you don't have officially, students told, the installer will walk you through every single step that you need to get it installed. Since I already installed rituals to your 2015 I'm going to just modify my isolation to be sure that everything needed for summer. And it's already stole. If you already have actual students told, chances are that if you create a new project, you will actually be able to create an IOS or Android project because summering gets installed with Michelle Australia 2015. So once you see something like this, you may see install because it might be the first time during television studio. But since I've already started, I'm going to click and modify, and you're going to be shown either way something very similar to these if you're starting to install for the first time or if you're just modifying your installation, you see something similar to this. Now what? You have to make sure that you're installing ease on the cross platform mobile development . Um, drop down. You should be checking in. C sharp slash that dot net summering. This is 1/3 party application, of course, because this is from submarine, just make sure that you're insulting it. Another thing that you may want to install these divisions to. The emulator for Android because, let's face it, Google's emulator Fran Druid is is bad. Actually, Microsoft's it's way, way better. You may also want to check on particular Android is the cane that you want to install from assembled this Level 22 a p I that I want to install for my android application development . On the tip, you click next, and in my case, I'm going to click update. In your case, it might just be in store. You, of course, say yes you can. You want to install new things, and that said, once installation is finished, you can go ahead and open visual studio and start creating on droid on iris application 15. Getting Ready - Resources: Hello. You are now ready to start building. Ire s on android applications using C sharp. You're somewhere in the studio. I d east or running stole only their your Mac or your PC. So it's time for us to start building those obligations. Now, before we move forward, I want to let you know that in the research says for the first lecture off each chapter, you will find a link to a give over repository where you will find the source code to the project that we will build throughout that chapter. To go ahead, feel free to dumb awarded. Check the coal. If you have any doubt about harm, Corning it or you feel better by following myself, tell you what I'm doing with my code. Open your PC. Go ahead. It's there for you to use it. However you want 16. Version Control with VS and Github - Getting Ready: during the next videos, we're going to be talking about version control, how you can use virtual control tools such as a visual instituting services, and get hope not only to keep control of the version ing of your applications and to keep your application of saving the clout, but also a way to share a project between visual studio on your Windows PC and someone in studio on your Mac. So I'm actually going to focus or really taking advantage of these tools on being able to code the same project on both your PC or your Mac. This could be very useful along many scenarios. For example, for me, I find it very useful to Seoul only be coating on my PC. And I certainly don't have my PC hot because I'm traveling or I don't know. I took my mark with me boards my perfectly in the clouds, like in just downloaded into summer in Studio and keep coating on my Mac. Or, for example, if you want to be coating on your Mac when you're building the iris application or your Mac application, you can do so checking your changes and then on your PC develop the application for Windows , for example. So there are, ah, a couple of things that I need to do first, and that is to create a couple of accounts. What is going to be a visual studio account on when it is going to be a giggle account to this sexually visual studio team services account, and it's fairly easy to create. Well, you have to do is go to visual Studio that calm, and you will find this big Bolton about getting started for free and visual studio team services. And when you click it, you're going to be navigated to create your own your own repository. So, for example, here I I can create my own costume mural for my own visual studio. I don't know. In this case, I'm going to use something very similar to my to my email, and I'm going to click on Continue, and after a couple of seconds, I'm going to be ready ejected to my own dashboard. So that's just wait for a second, and here I could my dashboard, and I'm not going to dig very deeply into the dashboard boards. I will guide you through the steps needed for you to create your project and store your project here in visual studio. So you, of course, may have some getting started guides. I'm not going to focus on that right now, Boards, I I'm going to move on to create my get home account. So it's really simple. You go to get help that comb on its actually right here, this Heino form. So I can pick, um, user name. And I can use, um, my email account as well and creates on password and saying no. Forget hope, and I am Course I'm going to just use a free repository right now. No need for us to pay for the repository for everything that we're going to be doing. It doesn't require a private, unlimited paid repository. So I'm going to finish the sign up, and here I am. I am. I give repository. So these are the two accounts that were going to be needing to move forward with the next videos 17. Version Control with VS and Github - Sync from Visual Studio: So let's say you have a project like this one on visual studio. You have financial project in the U. S. Project we news project and your shared project. And maybe you want toe on a Mac project. But you can only do that from a Mac PC. Or maybe you just want to use your Mac rivals developments or in friendly development, and you're just going from one B C to the other. The first step that you need to do in order to be able to access this project from other computers, including Mark Mark computers, is to go to your team services to visual studio team services. Now you want to go to the main page of the visuals to your team services, and you can do that by clicking team services from the top left corner and you want to create a new project. And right now I have some order projecting here. It'll give it time to by default, and you want to create a brand new project. This is just some app. I'm not going toward in a description. You do want to make sure that you choose agile as the process temple template and you select, get as a version control. Once the project is created, you can navigate by clicking on the navigate the project. Barton, obviously, And the here is where you will eventually be able to see your code s your workspace. Maybe see the springboard now that you are on a team and you really want to get into finishing the the development process, Visual shooting terraces is quite powerful. The things that we're going to cover are just very, very basic. And it's just going to focus on having the project of a level from the clout so you can use it from your studio or somewhere in studio. Well, there you go. You're perfect. This created the next step that you need to do is hit back to visual studio. Here. You want to go to the team Explorer. It's by default and usually next to the solution Explorer tap. And here you want to make sure that you are connected to Europe Visual studio Team services repository. So you have these outlet, these green outlet Ikon in here that you can press in order to manage your connections. And in here you can select to connect to a team project. Now, here you will usually don't have bitey for your server so you can just click of servers and hanging to your to your account So you actually see all the servers that you have, uh, linked to your account? In my case, I have these server and I have thes predict collections. And somewhere in here is my brand new some obligation that I have just created from the Explorer. And here it is. I see it's connected right now. It's connected to another repository. So I'm going to go on change this, I'm going to select home. I'm going to projects and my teams and I'm going to say the app today actually want. And now I'm connected to that brand new application that I have just created from Mitchell's to a team services. The first thing that I need to do once it's connected, it's to clone the repository. I'm going to select some part my PC where I want this repository to be hosted on so I can actually just go to where everything is stored, everything from visual studio. So I capital Stewart 3 15 projects I can make a new approach a new folder. It's not in here where I wanted to do that. Uh, projects. Create new folder, some repo click OK, and click on Cologne Repository. It's going to be quite fast. And once it's cloned and notice how, if there are no solutions currently, so I'm going to click a new solution. I'm actually going to click on Open Solution because I have the solution already created it . I'm going to navigate to visual studio a pro she ate, and I have the sum up writing here, So I select the solution file. I click on Open. It's going to be added to my repository, so your solution should now appear in the switchers for a just in case it wasn't already there. The next step is to right. Click on the solution and click on Add Solution to Search Control. You will see how some icons appear to left off the names of the project in the names of the files, And that means that is already eats head of some kind of version control the next staying in. The next thing that you have to do is hit back to Tim Explorer and you'll be able to see how, instead of the solution stuff, you can now see that solution as well. Now you want to click on sink. It's right here in the project. Tap on. Right now, we're going to be using team services, so I'm going to weaken get started. I, of course, have to select my my make sure, Like how? Which I just create