Xamarin Interview Questions and Answers
Question - 1 : - What is Xamarin?
Answer - 1 : -
Xamarin is a company that builds the software. The main operation of Xamarin is to build mobile apps that work on cross-platforms. It is used to build the UI for Android, iOS, and Windows operating system. Xamarin application shares the codebase. Xamarin's feature is similar to the native application. A developer can download the Xamarin tools in Visual Studio.
Question - 2 : - What is the advantage of Xamarin Development?
Answer - 2 : -
Benefits of Xamarin Development are:
- The user interface is simple and native.
- Developers can use Xamarin to make cross-platform apps.
- The chances of the bugs are less.
- We can create an app for iOS, Android, and Windows using the same codebase.
- Xamarin has powerful community support.
Question - 3 : - What are the disadvantages of Xamarin Development?
Answer - 3 : -
Disadvantages of Xamarin app Development are:
- The development of user interfaces in Xamarin is Time-Consuming.
- The apps created in Xamarin have a large file size. These apps are mostly between the 3 MB to 15 MB in size in the store.
- Even apps share the code across the platform, but there is also a need for the developer to create the linkage in the OS, which is difficult for the user.
Question - 4 : - What are the development approaches in Xamarin?
Answer - 4 : -
Xamarin has two approaches for app development. These are
- Xamarin.Forms: Forms are the choices for the developers who want to create one application for all the separate mobile platforms, which are Windows, iOS, and Android.
- Xamarin Native: This approach is used in those scenarios when we want to create a separate version of the same App for different platforms. Developers can use Xamarin.iOS, Xamarin.Android and Xamarin.Windows libraries to create the applications for each particular platform.
Question - 5 : - What is Xamarin Profiler?
Answer - 5 : -
Xamarin Profiler is a tool which is used by the developers to keep an eye on the information about the particular App inside the Visual Studio. With the help of Xamarin Profiler, developers can easily analyze the App's behavior. We can use the profiler to track the application's memory information and can sample its statistics.
Question - 6 : - What is the difference between the Xamarin and Mono?
Answer - 6 : -
| Xamarin | Mono |
| Xamarin is a powerful solution for building awesome apps. | Mono is used in those cases when we want to build an app for a single platform. In that case, there is a need for a Native platform. |
| With the help of Xamarin, we can create Native apps for multiple platforms via the same IDE, APIs, and Language. | Native mobile apps are built on Android, iOS.Java, and Windows. |
| Using Xamarin, we can skip the extra development time for each platform. | Using Mono, we cannot skip the extra development time for each platform. |
| Xamarin apps are accessible for more comprehensive ranges at a lower cost. | Mono apps are accessible for the broader ranges at a higher cost. |
Question - 7 : - What are the types of data binding modes in Xamarin?
Answer - 7 : -
The different types of data binding modes are:
- Default
- One way: changes in the source affect the target
- Two way: Changes in the source and destination affect each other
Question - 8 : - What is the lifecycle of Xamarin.Forms apps?
Answer - 8 : -
Xamarin.Forms is a platform to develop the cross-platform mobile applications by using the XAML for Front-End and C# for the backend of the application. In Xamarin.Forms application, we can share all code. Xamarin.Forms also give the 100% API coverage of Android and iOS native APIs. So that, we can develop native Android, iOS, and Windows apps.
For more information about the LifeCycle of the Xamarin.Forms, click on this link: Xamarin LifeCycle
When we create Xamarin.Forms application we will see four projects:
- Portable Project: This is the project where we will write 95% of our application code, and this code is shared in all the three platforms.
- Android: This is the project where we set the Android application icon and splash screen, and all the other code will come from the portable project.
- iOS: In this project, we set the iOS application architecture and icon.
- Universal Windows: Universal Windows Platform is the application platform
Question - 9 : - What is Xamarin Studio?
Answer - 9 : -
Xamarin Studio is a standalone IDE for developing the cross-platform mobile application, which is based on the open-source project Monodevelop.
Question - 10 : - What is the role of XAML in Xamarin?
Answer - 10 : -
XAML or Extensible Markup Language is a special tool that allows the developer to define the user interface in Xamarin app development. XAML has a vital role in Xamarin, but it is not necessary for app development in Xamarin.Forms. Xaml works with ModelView-ViewModel or MVVM architecture of an application.