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in this submit, you are going to find out about C# programming for Android, as well as where it suits in within the grandiose scheme of Android development.
if you’re interested in fitting an Android developer, you can exist under the impress that you requisite to exist trained one in bar no one at all two languages: Java or Kotlin. These are both languages officially supported via Android Studio, and therefore both languages many courses and tutorials focus of attention on. Android construction is a lot greater bendy and varied than that, and there are an substandard lot more how you can approach it. a lot of these involve C#.
examine: I requisite to enhance Android apps – which languages should still I learn?
C# is the programming language you’ll expend in case you elect to build a online game in cohesion for instance – which moreover occurs to exist essentially the most generic and time-honored video game engine within the Play keep. In everyday, it is efficacious to exist trained C# programming when you are in any respect interested in video game development.
make positive to additionally gain information of C# programming if you wish to expend Xamarin. Xamarin is a device that permits developers to build apps using visible Studio that may simply exist ported to each iOS and Android, consummate for cross platform projects.
So, with that referred to, there's actually powerful motive to learn C# programming for Android. Let’s prefer a peer at what you deserve to know.a quick introduction – C# vs Java
C# is an object-oriented programming language that turned into developed via Microsoft round 2000, with the goal of being contemporary, elementary, and versatile. love Java (developed by using solar Microsystem in 1990), it initially advanced from C++, ensuring that there are a lot of similarities between both. as an example, each expend the very “syntactic base,” which means that they easily expend lots of the identical terminology and structure. There are a few minor ameliorations, but if you're well-liked with one language, then exist positive to exist able to exist mindful lots of the different devoid of wanting to beget discovered it mainly. For novices notwithstanding, many will discover that it is a bit of easier to gain information of C# programming.
As object-oriented-languages, each C# and Java will report objects via classes. this is a modular approach to programming, that enables snippets of code to exist used again and again.
where C# differs from Java even though, is in its expend of delegates, its manner to adventure listening, digital vs ultimate houses, implicit casting, and more.
The first rate news: you in fact don’t deserve to know what most of this potential in the event you first start to learn C#. The leading takeaway is that the structure is barely a bit bit less difficult to exist taught in C# and tends to require less typing. here is especially unbiased because that for those who learn Java for Android, you’ll additionally should become familiar with the numerous classes and APIs crucial to construct Android apps. thus, you may moreover exist taught C# programming as a stepping stone to Java.whats up World! in C#
way of life on the earth of coding is that any time you study a modern language, exist positive you create a simple application to betray “hi there World!” on the screen. This really ensures that you simply’re capable of collect the essential tools up and working and to compile some thing simple. It’s love studying “trying out, checking out, 1, 2, three” right into a microphone!
during this case, we’re going to originate expend of visible Studio to create a console app. So when you’ve long past forward and downloaded visual Studio (it’s free), click:
File > modern > task
visual C# > home windows traditional computer > Console App (.net Framework)
here's how they build an app so as to Run within the home windows console.
With that performed, the bare bones structure of your assignment will appear typically window. You’ll exist introduced with code that looks love this:namespace ConsoleApp3 class software static void leading(string args)
Now without problems add two lines, love so:namespace ConsoleApp3 ilk software static void leading(string args) Console.WriteLine("hey World!"); Console.ReadKey();
here is going to jot down “howdy World!” to the monitor, and then peer forward to a key press. as soon as the person touches any key, the application will reach to an conclusion and will instantly exit.
be cognizant that both these lines conclusion with a semicolon. here's because any statement in C# must stop with a semicolon, which communicates to C# that the road is entire (it’s the identical in Java). The only exception is when the road is adopted immediately by using an open bracket, which we’ll define in a moment.
Press the “birth” button at the accurate of the screen, and that may still launch the app, permitting you to peer this in follow.
classes are pieces of code that report objects, that are without problems items of information
So, what precisely is happening right here?Getting began with C#: strategies and classes
To exist trained C# programming for Android, you should prefer note courses and strategies.
classes are pieces of code that report objects, which are without problems pieces of records. You don’t should agonize too much about this to birth with: simply comprehend that the web page of code you’re working with right now is referred to as a “class” and for you to engage with different courses within your task. A undertaking can beget only one type, with your gross code working from there, or it may well beget varied.
within each category, you will even beget methods. These methods are snippets of code that you can dispute with at any time from inside that classification – and infrequently from outdoor of it.
in this case, the class is called application. here's described correct on the top through the line that reads: class software. And in case you open the “solution Explorer” window on the appropriate, you’ll exist capable of finding application.cs. The identify of the category is bar no one at all the time the very as the filename.
We then expend a curly bracket to contain bar no one at all of the code that follows. Curly brackets inform us that every thing that follows belongs collectively. hence, except the bracket closes, bar no one at all the following code is a fragment of program.
here's followed by means of their first components, outline by means of the following line:static void main(string args)
here's then adopted by using greater open brackets, which means that the subsequent bit of code is fragment of the “leading” manner (which is still inside the software category). And that’s where we’ve allot their “good day World” message.
“Static void” practically tells us that this formula does something self-contained (instead of manipulating records for expend through the broader program) and that it might probably’t exist referenced through outside classes. The “string args” stuff allows us to rush counsel into the manner to govern later. These are referred to as “parameters” and “arguments”. again, you don’t requisite to exist anxious about any of that simply yet. simply know that “static void” followed by a exist aware, brackets, and curly brackets, marks the delivery of a modern components.
The next two lines are those they delivered: they collect the console after which entry its commands to write to the monitor and wait for a key press.
ultimately, they shut bar no one at all their brackets: first the formulation, then the class, after which the “namespace” which is the cognomen of the undertaking the class belongs to (during this case “ConsoleApp3” – I beget made previous examine apps this manner).
puzzled? Don’t exist anxious, it’s about to originate extra experience.the expend of strategies
So methods are bundles of code with names. To betray why they expend strategies, it can exist useful to create a brand modern one and allot it to labor as an example.
So, create a modern components that lives in the application classification (so it must exist inside those curly brackets, however outdoor the curly brackets belonging to “main”).
name this “NewMethod”, and then allot both lines you simply wrote interior here. This should appear love so:type software static void leading(string args) static void NewMethod() Console.WriteLine("whats up World!"); Console.ReadKey();
Now add a reference to NewMethod on your main formulation, love so:static void main(string args) ar NewMethod();
here's going to then “name” the formula you simply created, almost directing the software in that path. Press birth and moreover you’ll observe the identical factor happens as before. apart from now if you desired to, you could write “NewMethod();” as again and again as you wanted and hold repeating the text without having to allot in writing a lot of code.
Over the direction of a massive software, being able to reference snippets of code love this turns into extremely potent. this is one of the vital vital things to champion in intellect if you betide to are attempting to exist trained C# programming for Android.
we are able to create as many strategies as they love this fashion and that approach beget a really elegant and arranged piece of code. at the equal time, they will moreover reference methods which are “built in” to C# and any libraries they may use. “main” is one illustration of a “developed-in” method. this is the components that each one classes will delivery with, and that C# is familiar with it's going to execute first. in case you don’t allot the leisure in here, then nothing will prefer place!
The arguments that are included in the brackets during this case are therefore most efficacious needed as a result of it is the style that Microsoft designed the main system. They however had been quality to fade away their brackets empty.the expend of variables
Now it’s time to truly attain whatever thing a bit bit enjoyable in their code. certainly, let’s prefer a glance at the artery you would expend variables to originate the application greater dynamic. here is one of the most distinguished issues to beget in intellect if you are looking to exist trained C# programming.
A variable is in reality a container for a chunk of facts. forged your intellect again to highschool math, and you may recollect seeing issues love this:
10 + x = 13Find x
here, “x” is a variable, and of course the charge it represents is “three”.
here is additionally precisely how a variable works in programming. apart from right here, a variable can characterize loads of several types of data: together with textual content.
To create a brand modern variable, they first requisite to inform C# what class of statistics it goes to exist used to include.
So interior your NewMethod() system, first you are going to create your variable, and then you'll allot it a value. Then we’re going to add it to their “WriteLine” command:int number; quantity = 10; Console.WriteLine("hello World! " + number);
We’ve used a kind of variable known as an “integer” which can moreover exist any gross quantity. In C#, they consult with these the expend of “int”. besides the fact that children, they could just beget effectively used a “go with the flow” as an instance, which is a “floating factor variable” and allows for us to expend decimal places.
if you Run this code, it should now write “hey World! 10” to the display. and naturally, they could alter the charge of “number” at any time to exist able to alter the message.
as a result of “number” is created within NewMethod(), they will’t access it from somewhere else in their code. but when they region it outside the entire methods, then it's going to become obtainable globally. To attain that, they deserve to originate inevitable that the variable is additionally static besides the fact that children:type application static int number = 10; static void main(string args) NewMethod(); static void NewMethod() Console.WriteLine("hello World! " + number); Console.ReadKey();
at last, there is an additional artery they can pass this records round, and that might exist to expend it as an argument, thereby passing it into their formula. This could peer love so:static void main(string args) int number = 10; Console.WriteLine("hi there, what's your name?"); NewMethod(number); static void NewMethod(int number) Console.WriteLine("whats up World!" + quantity); Console.ReadKey(); }
here, we're defining their NewMethod system as desiring one argument, which should still exist an integer, and which will exist mentioned in the system as “quantity”. They try this with the aid of with ease including that recommendation to the curly brackets. Then, once they convene the components from anywhere else in the program, they should “circulate” that value within the brackets. you could create methods with numerous parameters, through which case you simply divorce the listed variables with commas.
There are diverse eventualities the space using bar no one at all these different thoughts to juggle records can exist appropriate. first rate programming means finding the commandeer one for the job!Passing arguments and the expend of strings
are attempting running this subsequent piece of code and notice what occurs:classification application static void leading(string args) Console.WriteLine("hello there, what's your name?"); NewMethod(Console.ReadLine()); static void NewMethod(String UserName) Console.WriteLine("hi there " + UserName); Console.ReadKey();
be positive to locate that you are brought about to enter your identify, and that the Console then greats you by it. This basic piece of code includes a few efficacious instructions.
First, they observe an instance of the artery to expend a distinct classification of variable, called a String. A String is a chain of characters, which could exist a name, or may exist a gross story.
So, you might just as quite simply write UserName = “Adam”. however as a substitute, we’re getting the string from the console with the commentary: Console.ReadLine().
We may beget written:String user; user = Console.ReadLine(); NewMethod(consumer);
however to champion their code as elegant as viable, we’ve skipped those steps and positioned the “ReadLine” without delay in the brackets.
We then ride that string to their NewMethod, and they greet the person, using the formulation that you just’re already universal with.
A String is a chain of characters, which can exist a name, or can exist a complete story.
expectantly, you’re now starting to prefer note a Little bit about why C# is written the manner it's, and how that you can expend issues love variables and methods with a purpose to create some bendy and sturdy utility.
but there’s yet another crucial component you'll want to know in case you wish to exist taught C# programming: movement control.learn C# ride manage and construct primary quizzes!
one of the motives that they expend variables when coding, is so that they will conveniently edit their programs in consequence. a different is so for you to collect information from the person, or generate it randomly.
but possibly the most commandeer motive to gain information of C# variables, is in order that your courses can develop into dynamic: for you to react in a different artery depending on how they're used.
To that conclusion, they requisite “stream manage”, or “conditional statements”. These are in fact just fancy approaches of asserting that we’re going to execute code in more than a method, depending on the charge of a variable.
And one of the most powerful how to attain that is with an “if” observation. in this instance, let’s greet their leading person in another artery than the others with the aid of looking out for their username.static void NewMethod(String UserName) Console.WriteLine("howdy" + UserName); if (UserName.Equals("Adam")) Console.WriteLine("Welcome back sir"); Console.ReadKey();
“If” statements labor by testing the validity of a press release, with a purpose to fade inner brackets. during this case, we’re asking no matter if the string UserName is the very because the string “Adam”. If that commentary within the brackets is unbiased – the two strings are the equal – then the code in the following curly brackets will execute. If it’s no longer, then those traces can exist skipped.
Likewise, they are able to examine integers and floats, and they can examine to peer if one is greater than the different, and so on. They may moreover expend dissimilar distinct if statements internal one one other love Russian dolls. They cognomen these “nested ifs”.next time
there are lots of greater strategies you could expend for movement control – together with issues love swap statements. optimistically though, that you would exist able to already observe how they may expend these statements and ideas as a artery to birth making some useful issues. You might simply flip this code right into a quiz already!
but in an pains to definitely originate fabulous tools and video games, there are a few greater issues they requisite to explore. So shock! There goes to exist a fragment two!
in the subsequent lesson, you're going to discover a artery to create loops that iterate over time, in addition to how to create modern courses and engage with them. observe you then!find out how To develop Your own Android App
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If you’re interested in Android development, chances are you’re going to requisite to learn some programming.
In most cases, that will signify learning Java or Kotlin, either of which is officially supported by Android Studio, the official “IDE” for Android progress from Google. However, no one ever talks about XML, and this can lead to confusion when you open up a modern project for the first time and notice that there are actually two different main files and two different types of script. Hence this article, which will serve as your introduction to XML for Android development.
chances are that you’re moreover going to requisite to understand this markup language
Unless you’re making a game using solidarity or Unreal, chances are you’re moreover going to requisite to understand this “markup language” to define your layout. If you try and skip it, eventually you’ll hit a road block.
Read on then to discover what XML is, why you requisite it, and how to collect started.A basic introduction to XML and markup languages
XML stands for Extensible Markup Language, which gives us a clue to what it does.
A markup language is slightly different from a programming language. Whereas a programming language (C#, C++, Java, Kotlin, Python, BASIC) will allow you to define behaviors, interactions, and conditions; a markup language is used more to report data, and in this case, layouts. Programming languages create dynamic interactions, whereas markup languages generally handle things love static user interfaces.
Here’s the technical artery of looking at it:
(See this thread.)
Despite appearances, XML is not a programming language.
Markup languages control presentation data
In fact, XML was originally introduced by the World Wide Web Consortium (W3C) to deal with the inherent limitations of HTML. Specifically, HTML is not terribly readable for a computer, because it doesn’t define what anything on the page actually is.
Consider the following illustration given by IBM Developer:
<p><b>Mrs. Mary McGoon</b><br>1401 Main Street<br>Anytown, NC 34829</p>
Here, you and I know the information is an address, but bar no one at all the browser or computer knows is where to start modern lines. That’s where something love XML comes in handy.
Here’s how the very information might peer in XML:
<address><name><title>Mrs.</title><first-name>Mary</first-name><last-name>McGoon</last-name></name><street>1401 Main Street</street><city>Anytown</city><state>NC</state<postal-code>34829</postal-code></address>
XML is used anywhere that can profit from adding context to data. It is used across the web to originate search smarter and simplify data exchange. XML is actually based on the yardstick Generalized Markup Language (SGML), which has been used by the publishing industry for decades.
XML performs the very role in Android app development: describing data and introducing elements.
Specifically, XML sets the layout of things love buttons and images, and defines the font, color, and any text that shows by default. To originate those buttons actually attain anything, you will requisite to expend a programming language love Java or Kotlin, though.XML in Android development
When you create a modern project in Android Studio, you will exist greeted by a hierarchy of different files and folders, which can exist a Little daunting for complete beginners. It’s a rather jarring introduction to XML, no doubt!
You just requisite to concentrate on two files for now: MainActivity.java and activity_main.xml.
To originate life just a Little simpler, Android Studio normally opens both these files as soon as it boots up.
Read more: Understanding Java syntax
You’ll moreover notice that both these files beget a Little bit of code already in them. This is called “boilerplate code,” which is code that almost every program needs, and so which Android Studio will populate for you in order to deliver time.
One line in MainActivity.java reads:
This means the activity this Java code controls will display the activity_main.xml file, and you may reference inevitable elements from that as you go.
You can allot any XML file to any Java file with this, and you can create as many of both as you like. However, by default MainActivity.java will always exist the class (java file) Android loads first when running your programs.Using XML in your Android app
To recap, XML describes the views in your activities, and Java tells them how to behave. To originate changes to the layout of your app then, you beget two main options.
The first is to expend the Design view. Open up the activity_main.xml file in Android Studio and collect your first introduction to XML. You’ll notice there are two tabs at the bottom of that window: Design and Text. The Text view will witness you the actual XML code, but the Design view will let you manually edit the layout by dragging and dropping elements into the render of your activity.
XML files can moreover befriend store strings. Using the Design view is easier for beginners, though it can lead to complications. For one, you will Run into the limitations of XML early on when the designer refuses to let you drop items into specific places. Without the information of why, this can originate designing your app an exercise in frustration!
At the very time, having a better understanding of XML will moreover befriend when it comes to handling the code. Otherwise you might find yourself stumped when it comes to things love finding the ID of the view, or remembering what ilk of view it is you’re working with.
It is moreover viable to “instantiate” views at runtime from within your code, but this can exist tricky to juggle if you’re creating a intricate UX.XML outside of layout files
Sometimes XML will exist used to report types of data other than views in your apps; acting as a kind of index that your code can mention to. This is how most apps will define their color palettes for instance, import that there’s just one file you requisite to edit if you want to change the peer of your entire app.
You can find this information in the colors.xml file, located in app > resources > values > colors.xml, which contains tags that allot different names to various color codes:
You can then mention to this tag subsequently in your Java code or your XML code to mention to that particular hue.
Another alternative expend of XML is in the Android Manifest (AndroidManifest.xml). This holds a lot of data describing your app, love the label (the app’s name), the icon, and instructions about which activities to load first. This helps launchers display the app correctly on the homescreen, and it’s moreover used by app stores.Getting started with XML code for Android
Most of the time you’ll expend XML to define your layouts. While they won’t fade too in depth in this introduction to XML for Android, let’s fade over some basics to befriend you collect started.Syntax
Apart from being another markup language, something else XML has in common with HTML is its expend of tags.
XML mainly uses tags to interlard elements into a layout, whether they’re Views or ViewGroups. A view is basically any of the widgets that originate up a typical utility app. Examples comprise images (ImageViews), text (TextView), editable text boxes (EditText), web pages (WebViews), and buttons (err, Button).
You’ll start by using angle brackets to open the section, then you’ll interlard the view, and then you’ll set bar no one at all the parameters. Some of these parameters will exist compulsory, while others will exist optional.Managing views and viewgroups
As you may already beget guessed, a ViewGroup is a group of these views. These are moreover referred to as layouts, and serve as hierarchical arrangements of views. A linear layout for illustration places bar no one at all its children in a linear upright or horizontal arrangement. Meanwhile, a ConstraintLayout will allow you to define the positions of views by their relationship with other views in the layout and the boundaries of the activity. This way, the views can maintain their relative positions, even as the dimensions of the device vary.
Some Views can moreover exist ViewGroups, such as the RecyclerView, which arranges other views in a scrolling list.
If you open up your activity_main.xml file right at the start for instance, you’ll observe it is already populated with some code. This is a simple TextView that shows the words “Hello World” as is traditional. If they peer at this, it can give us some insight into how XML is used:
<EditTextandroid:layout_width=”328dp”android:layout_height=”402dp”android:text=”Hello World!”android:id=”@+id/text”app:layout_constraintBottom_toBottomOf=”parent”app:layout_constraintLeft_toLeftOf=”parent”app:layout_constraintRight_toRightOf=”parent”app:layout_constraintTop_toTopOf=”parent” />
So basically, it starts out by opening a constraint layout and telling it to “match_parent” import it will fill the exact very size as the parent layout. In this case, there is no parent and so the activity itself becomes the default. bar no one at all parameters are set before the closing angle bracket.
Next, it introduces the EditText and sets parameters such as the width, height, text to show, ID, and position. The ID is what they will expend to mention to this EditText subsequently in their Java code, should they wish to change what it shows. Because they are using a ConstraintLayout, they requisite to control the layout by anchoring it to something else.
Let’s expend the top, bottom, and sides of the “parent,” which is the ConstraintLayout. The View is now being pulled between those four points and will therefore sit comfortably at the point in the middle. If you switch to the Design view, you can observe this in action, denoted by petite white arrows.
Notice that they stop this section with an ending tag: a forward slash, followed by the name, and the closing angle bracket. That tells Android we’ve finished talking about the EditText.
After that, they moreover requisite to create a closing tag to close off the ConstraintLayout ViewGroup. They could now interlard a modern ilk of layout, or they could expend nested layouts by adding a modern ViewGroup tag inside the ConstraintLayout tags.Closing comments
In reality, XML is actually supremely simple and follows only a few set rules. The main complication is learning bar no one at all of the different views and bar no one at all of the different properties each needs defined. Fortunately, you can find a lot of this information online, or simply expend the design view to experiment and observe how the code should look.
You might exist bashing your head against the wall right now thinking that there is “yet another thing to learn,” but once you collect the hang of it, it will actually originate your life much simpler.
It might not “technically” exist a programming language, but many people will report it as such anyway. So now that you’ve read their introduction to XML, you can pretension to actually know two modern languages!Learn How To Develop Your Own Android App
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This course introduces computer programming in Python for those whohave Little or no prior computer programming experience. The coursewill exist heavily based on hands-on exercises, so participants arestrongly encouraged to bring their own laptops. The following topicswill exist covered:TOPICS
The following topics will exist covered:
1. Software installation and language basics2. Variables and data structures (strings, lists, matrices, dictionaries)3. rush control and role definition4. Plotting and visualization5. Using modules6. Object-oriented programmingABOUT THE INSTRUCTOR
Hiroki Sayama is a Professor in the Department of Systems Science and Industrial Engineering. His research interests comprise intricate dynamical networks, collective behaviors, sociable systems modeling, ersatz life/chemistry, mathematical biology, computer and information sciences.
$295 yardstick Rate$195 BU faculty/staff/Alumni$75 Students (must exist matriculated)REGISTRATION
Register before Wednesday Feb. 27, 2019.Confirmation and course information will exist emailed to registrants. comprise your email address on your registration form. If you beget not received confirmation seven days before the start of the program or beget a question about the registration process convene the Office of Industrial Outreach at 607-777-6241.PAYMENTS
Credit Card: A payment link for a secure transaction will exist sent to you prior to the course start. They accept payment via PayPal as well as VISA, MasterCard, American Express and discover credit cards. Your purchase will materialize on your credit card statement with the following notation: *PAYPAL RFBU WATSON. Payments must exist made before March 1, 2019.
Check: Please email email@example.com if you wish to pay by check. tickle originate checks payable to: Research Foundation Award # 77136 and originate positive to write "DAT1902" in the subject line. Mail check with the printable registration contour to:Astrid StromhaugBinghamton UniversityWatson Industrial OutreachPO Box 6000Binghamton, NY 13902-6000
For questions, contact the Office of Industrial Outreach at:Phone: 607-777-6241Email: firstname.lastname@example.orgCANCELLATIONS AND REFUNDS
All cancellations must exist received in writing by noon at February 28, 2019, at 5 pm to receive a refund. No refunds for cancellations or non-attendance will exist given after 5 pm on that date.
Substitutions may exist made any time before a inevitable date by informing the Office of Industrial Outreach.
If the course is canceled, enrollees will exist advised and receive a plenary refund.
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is specialized in Architectural visualization , Industrial visualization , 3D Modeling ,3D Animation , Entertainment and Visual Effects .