Category : Android CSharp MonoDroid Visual Studio Xamarin
Category : Android CSharp MonoDroid Visual Studio Xamarin
As mentioned in my earlier post, we can use the default AlertDialog class to display the alerts of screen by setting different properties and methods of it. But still there sounds like, we may need dialogs on screen which would be needed to be customized. They can be accept user inputs, can display an arranged info of an user etc.
We will follow few simple steps
Let’s add a new layout to the project under Resources > layout.
Let’s just display a quick informative popup, which will only display an alert on screen with a title and a message in it. It actually gets closed when the back button get touched.
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AlertDialog.Builder alert = new AlertDialog.Builder(this); alert.SetMessage("This is just an alert to show on the screen in order to try my alert demo."); alert.SetTitle("Alert Clicked"); alert.Show(); |
We will add OK and Canel button. On click of the buttons, it will display a quick Toast message on screen in order
to differentiate which button is clicked.
There are basically 2 ways to do it in Android.
In this way we don’t need to define any Listview in our AXML page. Just few lines of code will do it.
Xamarin uses the Keyboard class to show different virtual keyboards depending upon the user request. It contains several static properties to create different kind of virtual keyboards. Xamarin displays the Default Keyboard, if nothing is specified.
Keyboard for Chatting
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MainPage = new ContentPage() { Content = new StackLayout() { Children = { new Entry() { Keyboard = Keyboard.Chat } } } }; |
It opens up the default virtual keyboard in the device, which would be convenient for chatting, having few extra keys.
The short answer is ScrollView is a Layout. But it can only contain a single Visual Element in its Content property.
Because, the Layouts such as Stack, relative etc. are derived from Layout<T> generic class. This Layout<T> generic class is derived from the Layout class, which is a non-generic class.
ScrollView is inherited from the Non-generic Layout class. That is the same reason, why it does not support a generic way to add children. It only exhibits the Content property to accept a single view or a Layout.
With the new release of Xamarin.Forms 1.3 version, the App Class has its new Avatar. The Older version of App Class was just a class with static methods. Unlike the older version, the new version is an inherited class from the Xamarin.Forms.Application class. Summary of improvements Addition of new life cycle events : We can
What is DependencyService in Xamarin ?
DependencyService is a static class under Xamarin.Forms namespace. Shared or Portable projects can access the platform based tweaks that are done in any specific platform projects by using DependencyService.
How it works?
The key point is by defining an Interface.