Xamarin Forms WebView Executing Javascript

The existing WebView control has the function to run Javascript on the loaded page, however it doesn’t have the ability to return the value. This post will walk through how to add that functionality in a bindable property. Extend Control Extending from the base WebView, we add a Function called EvaluateJavascript, that takes a string, […]

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Xamarin Forms WebView Bindable Actions

The WebView has a number of functions and properties that are only available by directly accessing the control.  To maintain a clean code behind and call functions from the ViewModel, we need to create a new custom control that provides new bindable properties. Extended Control First, lets create a new custom control that inherits from […]

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Xamarin Forms WebView Advanced Series

The Xamarin Forms WebView control is an abstraction of the platform specific Android WebView, iOS UIWebView and UWP WebBrowser controls. It allows you to view HTML and run Javascript from a local or remote source. While the WebView seems like an odd control to have in a mobile app, it continues to serve a variety […]

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Xamarin Forms Pull To Refresh With ListView

The Xamarin Forms ListView control has the ability to allow the user to pull down from the top of the ListView to trigger a refresh command. I say a refresh command, because the pull to refresh, just triggers a command and you can do whatever you want in that command, including not updating the ListView. Properties […]

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Xamarin Forms Layout Engine, Under The Hood

Xamarin Forms has its own layout engine that calculates the position of elements on the screen, converting layout coordinates internally and passing them to the native controls for each platform. While the conversion from a Xamarin Forms control to a native control is easy to follow via a renderer, the layout engine is not as […]

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Troubleshooting Connecting to Xamarin Mac Agent

Couldn’t connect to mac.local. Please try again. This problem appears more than I would like and it is due to a variety of issues. These normally occur after upgrades or setting up your Mac Build Host for the first time. Connecting To The Mac Agent You have a Mac setup and Visual Studio running and […]

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Introduction To Xamarin Workbooks

Xamarin Workbooks is a unique product that allows you to write documentation, with runnable code examples and provides a way to visualize the user interfaces. You can create these workbooks for Xamarin Android, Xamarin iOS, WPF and Console. As of the date of this post, Xamarin.Android and Xamarin.iOS don’t have great (or any?) support in […]

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Accommodating The On Screen Keyboard in Xamarin Forms

Most, if not all apps, will require an entry field for user input. When you are on a mobile device, selecting an entry field will cause the onscreen keyboard to appear and depending upon the platform and app settings it can cause different things to happen to your layout. Xamarin Forms Page As a starting […]

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Accessing Files on Emulators

When you are developing on an emulator, you may want to look at the files created by the application. Each emulator and SDK tools have different capabilities on reading and writing files to disk. You may want to do this to open a SQLite Database, or to change the hosts file in Windows Mobile Emulator. Windows Mobile […]

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Resource Files in Xamarin Forms

Resource files allow you to define a name and a resource, normally a string, that can change depending upon the language of the device. Each native platform has a resource file structure and setup that can be used. Xamarin.Android and Xamarin.iOS will use resx and UWP uses resw. Interestingly with both of these file extensions, […]

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