Mastering xamarin forms by ed snider download for free

Forms toolkitMaximize the testability, flexibility, and overall quality of your Xamarin. Forms mobile appThis step-by-step tutorial is packed with real-world scenarios and solutions to build professional grade mobile apps with Xamarin. Forms mobile appsExtend the Xamarin. Forms navigation API with a custom ViewModel-centric navigation serviceLeverage the inversion of control and dependency injection patterns in Xamarin.

Forms mobile appsWork with online and offline data in Xamarin. Forms mobile appsTest both business logic and user interface code in Xamarin. Forms mobile appsExplore how to improve mobile app quality with analytics and crash reporting using Xamarin InsightsIn DetailStyle and approachThis book is intended for C developers who are familiar with the Xamarin platform and the Xamarin.

Forms toolkit. If you have already started working with Xamarin. Get Books. Learn how to build stunning, maintainable, cross-platform mobile application user interfaces using C 7 with the power of both the Xamarin and Xamarin. Forms Maximize the testability, flexibility, and. Mastering Xamarin.

Forms - Second Edition. Discover how to extend and build upon the components of the Xamarin. Forms toolkit to develop an effective, robust mobile app architecture.

Starting with an app built with the basics of the Xamarin. Forms toolkit, you'll go step by step through several advanced topics to create a solution architecture rich with the. Maximize the testability,. In order to create the new entry page that contains a TableView , perform the following steps:. Update the constructor of the NewEntryPage class using the following code to build the TableView that will represent the data entry form on the page:.

Now that we have created the new entry page, we need to add a way for users to get to this new screen from the main page. We will do this by adding a " New " button to the main page toolbar.

In Xamarin. Forms, this is accomplished by adding a ToolbarItem to the base ContentPage ToolbarItems collection and wiring up the ToolbarItem Clicked event to navigate to the new entry page, as shown in the following code:. In Chapter 3 , Navigation Service , we will build a custom service to handle navigation between pages, and we will replace the Clicked event with a data-bound ICommand ViewModel property, but for now, we will use the default Xamarin.

Forms navigation mechanism. Now, when we run the app we will see a New button on the toolbar of the main page. Clicking the New button should bring us to the New Entry page, as shown in the following screenshot:. We will need to add a "Save" button to the New Entry page toolbar, so that we can have a way of saving new items. The Save button will be added to the new entry page toolbar the same way the New button was added to the main page toolbar.

When we run the app again and navigate to the New Entry page, we should now see the Save button on the toolbar, as shown in the following screenshot:. When a user taps on one of the log entry items on the main page, we want to take them to a page that displays more details about that particular item, including a map that plots the item's location.

Along with additional details and a more in-depth view of the item, a detail page is also a common area where actions on that item might take place, for example, editing the item or sharing the item on social media.

The detail page will take an instance of a TripLogEntry model as a constructor parameter, which we will use in the rest of the page to display the entry details to the user. Forms ContentPage to the project and name it DetailPage. Update the constructor of the DetailPage class to take a TripLogEntry parameter named entry, as shown in the following code:.

Add the Xamarin. Maps NuGet package to the core project as well as each of the platform-specific projects. This separate NuGet package is required in order to use the Xamarin. Forms Map control in the next step. Update the body of the constructor using a Grid layout to display the details of the entry constructor parameter, as shown in the following code:.

Next, we need to wire up the tapped event on the list of items on the MainPage to pass the tapped item over to the DetailPage that we just created, as shown in the following code:. Finally, we need to initialize the Xamarin. Maps library in each platform-specific startup class for example, AppDelegate for iOS and MainActivity for Android using the following code:.

Now when we run the app and tap on one of the log entries on the main page, we will be navigated to the details page to see more detail about that particular log entry, as shown in the following screenshot:. In this chapter, we built a simple three-page app with static data, leveraging the most basic concepts of the Xamarin.

Forms toolkit. For example, we used the default Xamarin. Forms navigation APIs to move between the three pages, which we will refactor in Chapter 3 , Navigation Service to use a more flexible, custom navigation service.

Now that we have built the foundation of the app, including the basic UI for each page within the app, we'll begin enhancing the app with better architecture design patterns, live data with offline syncing, nicer looking UI elements, and tests. In the next chapter, we will introduce the MVVM pattern and data-binding to the app to enforce a separation between the user interface layer and the business and data-access logic. He has a passion for mobile design and development and regularly speaks about Xamarin and Windows app development in the community.

Ed works at InfernoRed Technology, where his primary role is working with clients and partners to build mobile and media focused products on iOS, Android, and Windows. He started working with the. NET framework in when.

NET 2. NET since About this book Discover how to extend and build upon the components of the Xamarin. Publication date: January Publisher Packt. Pages ISBN Chapter 1. Getting Started. Introduce and define the features of the app that we will build throughout the rest of the book Create a new Xamarin. Forms mobile app with an initial app structure and user interface.