Android and iOS development with C++ in Visual Studio
For an overview of the Visual Studio capabilities described in this article, see Develop C and C++ applications.
In this blog post, we will focus on how to build Android and iOS apps with C++ in Visual Studio. First we will talk a look at how to acquire the tools for Android and iOS development, then we will create a few C++ mobile apps using the built-in templates. Next we will use the Visual Studio IDE to write C++ and Java code, then we will use the world-class Visual Studio debugger to catch issues in C++ and Java code. Finally, we will talk about how the C++ mobile solution can be used in conjunction with Xamarin.
Install Visual Studio for Android and iOS development
First, download Visual Studio 2017 and launch the Visual Studio installer.
To build Android or iOS applications, choose the “Mobile development with C++” workload under the “Mobile & Gaming” category.
Android development: By default, this workload includes the core Visual Studio editor, the C++ debugger, GCC and Clang compilers, Android SDKs and NDKs, Android build tools, Java SDK, and C++ Android development tools. You could choose to install the Google Android Emulator in the Optional Component list if you don’t have an Android device for testing. This should give you everything you need to start building Android applications.
iOS development: if you’re also targeting iOS, check “C++ iOS development tools” in the Optional Component list and you would be good to go.
Create a new Android application using project templates
If you plan to start with targeting Android first and worry about other platforms later, the VS built-in Android project templates including Native-Activity Application, Static Library, Dynamic Shared Library, could be a great starting point. If you’d rather start with a cross-platform solution to target multiple mobile platforms, jump to the next section Build an OpenGLES Application on Android and iOS where we’ll talk about building an app that targets both platforms with shared C++ code.
You can find the Android templates under Visual C++ -> Cross Platform -> Android node.
Here we’re going to create a new Native Activity Application (Android), which is popular for creating games and graphical-intensive apps. Once the project is created, in the Solution Platforms dropdown, choose the right architecture that matches the Android emulator or device that you’re using, and then press F5 to run the app.
By default, Visual Studio uses the Clang toolchain to compile for Android. The app should build and run successfully, and you should see the app changing colors in the background. This article Create an Android Native Activity App discusses the Native Activity project in more details.
Build an OpenGLES Application on Android and iOS
The OpenGL ES Application project template under Visual C++->Cross Platform node is a good starting point for a mobile app targeting both Android and iOS. OpenGL ES (OpenGL for Embedded Systems or GLES) is a 2D and 3D graphics API that is supported on many mobile devices. This template creates a simple iOS app and an Android Native Activity app which has C++ code in common that uses OpenGL ES to display the same animated rotating cube on each platform.
The created OpenGL ES Application solution includes three library projects in the Libraries folder, one for each platform and the other one for shared C++ code, and two application projects for Android and iOS respectively.
Now let’s run this app on both Android and iOS.
Build and run the app on Android
The solution created by the template sets the Android app as the default project. Just like run the Android Native Activity app we discussed earlier, in the Solution Platforms dropdown, select the right architecture that matches the Android emulator or device that you’re using, and then press F5 to run the app. The OpenGL ES app should build and run successfully and you will see a colored 3D spinning cube.
Build and run the app on iOS
The iOS project created in the solution can be edited in Visual Studio, but because of licensing restrictions, it must be built and deployed from a Mac. Visual Studio communicates with a remote agent running on the Mac to transfer project files and execute build, deployment, and debugging commands. You can setup your Mac by following instructions Install And Configure Tools to Build using iOS.
Once the remote agent is running on the Mac and Visual Studio is paired to it, we can build and run the iOS app. In the Solution Platforms dropdown in Visual Studio, choose the right architecture for the iOS simulator (x86) or the iOS device. In Solution Explorer, open the context menu for the OpenGLESApp1.iOS.Application project and choose Build. Then choose iOS Simulator on the toolbar to run the app in the iOS Simulator on your Mac. You should see the same colored 3D spinning cube in the iOS Simulator.
This article Build an OpenGL ES Application on Android and iOS includes more details about the OpenGLES project.
Visual Studio to target all mobile platforms
If you’re building an app to target multiple mobile platforms (Android, iOS, UWP) and wish to share the common code in C++, you can achieve this by having one single Visual Studio solution and leverage the same code-authoring and debugging experience all in the same IDE. With Visual Studio, you can easily share and re-use your existing C++ libraries through the shared project component to target multiple platforms. The following screenshot shows a single solution with 4 projects, one for each mobile platform and one shared project for common C++ code.
Write cross-platform C++ code with the full power of Visual Studio IDE
With Visual Studio, you can write cross-platform C++ code using the same powerful IntelliSense and code navigation features, making code writing much more efficient. These editing capabilities not only light up in the common code, but are context-aware of the target platform when you write platform-specific code.
Member list and Quick Info, as shown in the following screenshot, are just two examples of the IntelliSense features Visual Studio offers. Member list shows you a list of valid members from a type or namespace. Typing in “->” following an object instance in the C++ code will display a list of members, and you can insert the selected member into your code by pressing TAB, or by typing a space or a period. Quick Info displays the complete declaration for any identifier in your code. IntelliSense is implemented based on the Clang toolchain when targeting the Android platform. In the following screenshot, Visual Studio is showing a list of the available Android-specific functions when the Android Native Activity project is active.
Auto-complete, squiggles, reference highlighting, syntax colorization, code snippets are some of the other useful productivity features to be of great assistance in code writing and editing.
Navigating in large codebases and jumping between multiple code files can be a tiring task. Visual Studio offers many great code navigation features, including Go To Definition, Go To Line/Symbols/Members/Types, Find All References, View Call Hierarchy, Object Browser, and many more, to boost your productivity.
The Peek Definition feature, as shown in the following screenshot, brings the definition to the current code file, allows viewing and editing code without switching away from the code that you’re writing. You can find Peek Definition by opening the context menu on right click or shortcut Alt+F12 for a method that you want to explore. In the example in the screenshot, Visual Studio brings in the definition of __android_log_print method that is defined in the Android SDK log.h file as an embedded window into the current cpp file, making reading and writing Android code more efficiently.
Debug C++ code with the world-class Visual Studio debugger
Troubleshooting issues in the code can be time-consuming. Use the Visual Studio debugger to help find and fix issues faster. Set breakpoints in your Android C++ code and press F5 to launch the debugger. When the breakpoint is hit, you can watch the value of variables and complex expressions in the Autos and Watch windows as well as in the data tips on mouse hover, view the call stack in the Call Stack window, and step in and step out of the functions easily. In the example in the screenshot below, the Autos window is showing value changed in the Android sensorManager and accelerometerSensor types.
The Android debugging experience in Visual Studio also supports for debugging pre-built Android application via other IDE(s), other basic debugger capabilities (tracepoints, conditional breakpoints) and advanced features such as debugger visualizations (Natvis Support) and attaching to a running Android application as well.
You can find more information about the C++ debugger in this blog post C++ Debugging and Diagnostics.
Java debugging and language support for Android
Whether you’re writing Java or C++ code in your Android apps, Visual Studio has it covered. Visual Studio includes a Java Debugger that enables debugging Java source files in your Android projects, and with the Visual Studio Java Language Service for Android extension, you can also take advantage of the IntelliSense and browsing capabilities for Java files in the Visual Studio IDE.
Editing Java code
First, install the Visual Studio Java Language Service for Android extension. It provides colorization (both syntactic and semantic), error and warning squiggles as well as code outlining and semantic highlighting in your Java files. You will also get IntelliSense assistance, such as Member List, Parameter Help, Quick Info, making writing Java code more efficient. In the following screenshot, Visual Studio provides a member list for the android.util.Log class.
Another handy feature for larger codebases or for navigating 3rd party libraries for which you have the source code available is Go to definition (F12) which will take you to the symbol definition location if available.
Debugging Java code
To turn on Java debugging for your Android projects in your next debugging session, in the Debug Target toolbar, change Debug Type dropdown to “Java Only” as shown in the following screenshot.
Now you can set line breakpoints, including conditions or hit counts for the breakpoints, anywhere in the Java code. When a breakpoint is hit, you can view variables in the Locals and Autos window, see call stack in the Call Stack window, and check log output in the Logcat window.
Build Xamarin Android Native Applications
Xamarin is a popular cross-platform solution for creating rich native apps using C# across mobile platforms while maximizing code reuse. With Xamarin, you could create apps with native user interfaces and get native performance on each mobile platform. If you want to leverage Xamarin for writing user interfaces in C# while re-using your existing C/C++ libraries, Visual Studio fully supports building and debugging Xamarin Android apps that reference C++ code. This blog post Developing Xamarin Android Native Applications describes this scenario in more details.
Referencing C++ libraries in Xamarin iOS apps can be achieved by following this blog post Calling C/C++ libraries from Xamarin code.
Try out Visual Studio 2017 for mobile development with C++
Download Visual Studio 2017, try it out and share your feedback. For problems, let us know via the Report a Problem option in the upper right corner of the VS title bar. Track your feedback on the developer community portal. For suggestions, let us know through UserVoice.
What is Ios App C?
Objective-C is the most commonly used programming language for Apple’s mobile operating systems. It is also the basis for the Microsoft Windows kernel, the world’s most popular operating system. While C is the primary language for development of the operating system, it also includes portions written in assembly language. Apple’s new Swift programming language is aimed at replacing Objective-C. However, this change will not affect the existing applications written in C.
Can I Make iOS App with C?
Objective-C is the first language used for iOS app development. This language was created by Brad Cox and was first released on the market 24 years ago. It is considered more stable than Swift. It was previously used by Apple until 2014 and is still widely supported. Unlike Swift, Objective-C is based on the C family of languages and is compatible with many C++ libraries. Depending on your requirements, you may need to learn both Swift and Objective-C.
You can also learn Swift or Objective-C if you want to create an iOS app. Both languages use optionals to deal with nil values explicitly. In addition, both languages initialize variables before they are used. Swift and Objective-C both check array indices for out-of-bounds errors and have the use of optionals to handle nil values explicitly. For more information, see “Can I Make iOS App with C?”
What Does the iOS App Do?
If you’ve ever wondered how to write a new app, you’ve probably noticed that it’s missing a crucial file format. While iOS has always included preinstalled applications, you can also install applications from third-party stores, including the Apple App Store. For example, if you’ve downloaded a new music app, you can choose to open it directly from your iTunes library. Another way to install an app from the Apple App Store is to download the IPA file from a software distributor.
Objective-C is a language that supports the iOS platform. It was designed after the merging of C and Smalltalk. The language has a comprehensive syntax that combines non-object and object programming. The dynamic runtime allows for message passing and taps. There are also many pre-built components available, including libraries and frameworks, that allow you to customize your app. The iOS App C format is the most common programming language on iOS devices.
Which Apps Use C Program?
You might wonder, “What’s the difference between Objective-C and Python?” This answer is a matter of choice. C is a general-purpose computer programming language developed by Dennis Ritchie at Bell Telephone Laboratories. While it was originally intended for developing system software, C has become popular for portable application development. Its influence is extensive, with C++ and Swift being two popular alternatives. But which one is the best?
Can I Write an App in C?
Yes, you can. iOS is not quite like Android, which requires a separate NDK. Despite this, the programming language supports both languages. You can write an Ios App in C++. It is up to you to decide which is more suitable. Whether you choose C++ depends on your goals and the platform you’re targeting. But most people choose C for its simplicity and compatibility.
C is widely used to develop mobile apps, including iOS apps. But iOS developers can also choose to write apps in Objective-C++. It’s a good choice if you’ve already worked with C++ before, as the language allows you to use libraries and a powerful SDL. If you’ve ever wondered what you would write if you decided to write an app in Objective-C, here are a few things to consider.
Which Coding Language is Used in iOS?
There are a lot of choices when it comes to writing iOS apps. You can choose between Objective-C and Swift. These two popular languages offer similar features and don’t require workarounds, but they do differ in some aspects. You’ll also want to consider the market share of each language. Once you’ve chosen your language, it’s time to decide how to use it to create your iOS app.
Objective-C was first introduced in 1984 as an extension of the object-oriented programming language C. This was the primary iOS coding language until the introduction of Swift. While the latter is a much more powerful programming language than its predecessor, it does have some disadvantages. The former is not open source, while the latter has security issues and limited functionality. If you’re looking for a language to write iOS apps, it’s worth considering Objective-C.
When writing iOS apps, nearly all development work is done in an Integrated Development Environment (IDE). Xcode is Apple’s officially-approved IDE. Xcode supports development with a suite of testing and debugging tools. You can preview your app as you develop it, which is essential when developing a cool app. The language supports frequent iteration, which is the key to creating cool apps.
Is iOS Safe to Use?
As an iOS developer, you will have to deal with the new technologies and concepts that come with the platform. You need to learn about new development tools and a whole new programming language. However, this is not an impossible task, as long as you are committed to learning. Here are some tips for learning Objective-C for iOS. You should also be aware of network connectivity issues when developing your application. It’s important to be aware of the memory, processing, and user interactions constraints of the system.
What is iOS Android?
If you are wondering what is the difference between iOS and Android apps, this article will help you answer this question. The two operating systems are designed to work with different applications. iOS apps are written in Objective-C, while Android applications are written in Java. Both languages have their own strengths and weaknesses. Objective-C is more general-purpose and procedural, while Java is more object-oriented. iOS applications use Objective-C because it’s faster to compile and run, while Android applications are typically written in Java.
One of the major differences between iOS and Android apps is their architecture. iOS is easier to develop and maintain than Android apps. Android apps rely on Java and Kotlin, while iOS apps use Swift, a proprietary app development language. The difference in programming languages is also evident in the way developers build their apps. iOS applications generally use a cleaner and more aesthetically pleasing environment, with generous use of white space and shadows. In addition, iOS apps are designed to be multi-layered, while Android apps rely heavily on color and motion.
What is the difference between ios::app and ios::ate? [duplicate]
What is the difference between these two file opening modes ?
ios:ate sets the get/put pointer position to the end of the file so reading/writing will begin from end, but how is it different from ios::app , which again opens a file in append mode?
When I have created a ofstream and opened it in `ios:app mode, the put stream pointer still points to the beginning, how does the appending work then?
Also, I understand that ifstream , ofstream , and fstream are high-level classes to manage the underlying stream buffer.
Does it mean that even in ios:app mode I can read data from a file?
3 Answers 3
app comes from ‘append’ — all output will be added (appended) to the end of the file. In other words you cannot write anywhere else in the file but at the end.
ate comes from ‘at end’ — it sets the stream position at the end of the file when you open it, but you are free to move it around (seek) and write wherever it pleases you.
ate simply positions you at the end of file after opening, and nothing else. It’s not much use on an ofstream , at least without other flags, since the file will have been truncated anyway, so the beginning is the end. (To avoid truncation, and still be able to write anywhere in the file, you need to or in ios::in as well, even if you’re not going to read.)
app prevents the truncation of an existing file, and causes every write to go to the end of the file. Atomically, if possible; if other processes are writing to the same file, your write should still go to the end. Note however that this refers to the actual system level write. If, however, you are writing lines which are less than the buffer size, and you terminate each line with std::endl , you can count on each line being appended atomically, regardless of what other processes might be doing with the file. To be effective, you’ll probably want to use pubsetbuf on the filebuf as well, to ensure a minimum buffer size.
In practice, I don’t think I’ve ever used either of them, or found them of any use. The buffering issues with app , in particular, have generally led me to write my own streambuf , with conceptually unlimited buffering (an std::vector<char> as buffer), which opens the underlying system file with the equivalent of app , but guarantees only writing to it when explicitly flushed (as with `std::endl).
Quick Answer: What Is Ios App C
It’s a tough superset of C which makes any C code a valid Objective-C program. Even though Swift is now the suggested language for developing iOS apps, there are still good reasons to use past languages like C, C++ and Objective-C.
Can I make iOS app with C?
About XCode, Swift, and Objective-C Included with XCode is support for Apple’s newer Swift programming language, made specifically for iOS and macOS. While Apple is pushing Swift, you can also program iOS in Objective-C.
What is Objective-C vs Swift?
Swift is easier to read and easier to learn than Objective-C. Objective-C is over thirty years old, and that means it has a more clunky syntax. Also, Swift requires less code. Whereas Objective-C is verbose when it comes to string manipulation, Swift employs string interpolation, without placeholders or tokens.
What is iOS app used for?
A software application developed for use on Apple’s iOS-powered iPhone devices. iPhone apps are available through the Apple App Store and are designed to run on Apple’s iOS mobile operating system, which powers the iPhone as well as Apple’s iPad and iPod Touch devices.
Is C and Objective C the same?
The main difference in C and Objective C is that C is a procedure programming language which doesn’t support the concepts of objects and classes and Objective C is Object-oriented language which contains the concept of both procedural and object-oriented programming languages.
What language is iOS written in?
Swift is a powerful and intuitive programming language for iOS, iPadOS, macOS, tvOS, and watchOS. Writing Swift code is interactive and fun, the syntax is concise yet expressive, and Swift includes modern features developers love. Swift code is safe by design, yet also produces software that runs lightning-fast.
Is Swift better than Python?
The performance of the swift and python vary, swift tends to be swift and is faster than python. If you are developing applications that will have to work on Apple OS, you can choose swift. In case if you want to develop your artificial intelligence or build the backend or create a prototype you can choose python.
Is Swift like Java?
Swift vs java is both different programing languages. They both have different methods, different code, usability, and different functionality. Swift is more useful than Java in the future. But information technology java has one of the best languages.
What are most apps written in?
As an object oriented option for mobile development, Java is commonly used to develop Android apps. Most of the other Android languages are considered a version of Java or a flavor of Java.
Is Swift made from C?
It is built with the LLVM compiler framework included in Xcode 6, and uses the Objective-C runtime, allowing C, Objective-C, C++ and Swift code to run within a single program.
Why is Objective-C better than Swift?
Swift is faster than Objective-C, because it removed the limitations of C language and has been improved with the help of advanced software development technologies that were unavailable when C was developed. Speed also depends on a programmer’s level and capabilities, since a slow app can be written in Swift as well.
Is Objective-C faster than Swift?
Performance. The official Apple website claims that Swift is 2.6 times faster than Objective-C. Swift and Objective-C are both statistically typed languages that use the same iOS SDK and the high-quality Low Level Virtual Machine compiler.
Is Apple a iOS?
Apple (AAPL) iOS is the operating system for iPhone, iPad, and other Apple mobile devices. Based on Mac OS, the operating system which runs Apple’s line of Mac desktop and laptop computers, Apple iOS is designed for easy, seamless networking between a range of Apple products.
What versions of iOS are people using?
In April 2021, the Apple iOS 14.4 operating system version had a share of 75.06 percent percent amongst all mobile Apple devices worldwide, with the iOS 14.2 version occupying 3.37 percent of the Apple mobile market.
What is the latest version of iOS?
Get the latest software updates from Apple The latest version of iOS and iPadOS is 14.7.1. Learn how to update the software on your iPhone, iPad, or iPod touch. The latest version of macOS is 11.5.2. Learn how to update the software on your Mac and how to allow important background updates.
What is C ## used for?
What Is C#? C# is a modern, general-purpose programming language that can be used to perform a wide range of tasks and objectives that span over a variety of professions. C# is primarily used on the Windows . NET framework, although it can be applied to an open source platform.
Is Objective-C faster than C?
The difference between C and Objective C is speed. But this call needs to perform a dynamic look-up in a method table and that every time the method is called. C on the other hand does static dispatch. Static dispatch is much faster.
Is Objective-C dead?
According to the update for February 2020: Objective-C lost this month another 7 positions in the TIOBE index, thus being on the brink of slipping out of the top 20. Actually this drop took much longer than expected. In 2014 Apple announced the new programming language Swift to be the successor of Objective-C.
Is Windows written in C?
Microsoft Windows Microsoft’s Windows kernel is developed mostly in C, with some parts in assembly language. For decades, the world’s most used operating system, with about 90 percent of the market share, has been powered by a kernel written in C.
What was the original name of iOS?
iOS actually began life with a different name: OS X When the original iPhone launched, the OS was called “iPhone OS” and it kept that name for four years, only changing to iOS with the release of iOS 4 in June of 2010.
Are all iOS apps written in Swift?
Most modern iOS apps are written in the Swift language which is developed and maintained by Apple. Objective-C is another popular language that is often found in older iOS apps. Although Swift and Objective-C are the most popular languages, iOS apps can be written in other languages as well.