To restrict the Entry to only accept numbers you could use a Behavior or a Trigger. Both of those will react to a user typing into them. So for your use, you could have the trigger or behavior look for any characters that are not numbers and remove them. Something like this for a behavior … Read more
UPDATE (10/24/17): While this way of doing things was okay a few years ago, I now strongly advocate for using native UI for doing authentication, as opposed to the webview method shown here. Auth0 is a great way to accomplish native UI login for your apps, using a wide variety of identity providers: https://auth0.com/docs/quickstart/native/xamarin EDIT: … Read more
Use ToolbarItem from YourPage.xaml.cs: ToolbarItems.Add(new ToolbarItem(“Search”, “search.png”,() => { //logic code goes here })); In Xaml: <ContentPage.ToolbarItems> <ToolbarItem Icon=”search.png” Text=”Search” Clicked=”Search_Clicked”/> </ContentPage.ToolbarItems> Update Xamarin.Forms introduced TitleView in 3.2.0 that you can customize title of the navigation. <ContentPage xmlns=”http://xamarin.com/schemas/2014/forms” xmlns:x=”http://schemas.microsoft.com/winfx/2009/xaml” x:Class=”TestPage”> <NavigationPage.TitleView> <Button … /> </NavigationPage.TitleView> … </ContentPage>
When using Visual Studio 2015 Update 3 with the latest Xamarin tools (which is v4.2.2.6 when writing this answer), right click your Android project and select “Archive…” as described here: https://developer.xamarin.com/guides/android/deployment,_testing,_and_metrics/publishing_an_application/part_1_-_preparing_an_application_for_release/#Compile This will open the Archive Manager and begins the process of archiving the App bundle. When the archiving is finished, you can click on … Read more
You can try this Application.Current.MainPage.Width in my case this worked and i am able to find the device width in portable project itself.
This should be solved by using old JNI constructors and legacy renderers public MyLabelRenderer(IntPtr handle, JniHandleOwnership transfer) { } and by setting UseLegacyRenderers flag in MainActivity Forms.SetFlags(“UseLegacyRenderers”);
For people who prefer to use XAML and who like to bind Command directly to the ViewModel, you can use this: <Label HorizontalOptions=”Center” TextColor=”Blue” FontSize=”20″ Text=”Forgot Password?”> <Label.GestureRecognizers> <TapGestureRecognizer Command=”{Binding ForgotPasswordCommand}” /> </Label.GestureRecognizers> </Label> And then in your ViewModel, you’ll just assign the command to your function: public ICommand ForgotPasswordCommand => new Command(OnForgotPassword); And then … Read more
I got this error because forget to add sign in capability and restart the app.
The solution that worked for me: Uninstall Xamarin.Forms: Right Click Solution -> Manage NuGet Packages -> Uninstall Xamarin.Forms -> Restart VS Then remove build platforms: Right Click Solution -> Properties -> Build -> under Targeting select Change -> Remove platform(s) -> Restart VS Reinstall Xamarin.Forms: Manage NuGet packages -> Search for Xamarin.Forms -> Install -> … Read more
StackLayout doesn’t go very well with varying heights in this scenario. The Xamarin Forms engines isn’t as well rounded as the WPF engine at this point. Basically you have to go <Grid> <Grid.RowDefinitions> <RowDefinition Height=”7*” /> <RowDefinition Height=”3*” /> </Grid.RowDefinitions> <Entry Grid.Row=”0″ VerticalOptions=”Fill”></Entry> <Button Grid.Row=”1″ VerticalOptions=”Fill”>Click me</Button> </Grid> Also as a side note, only Grids … Read more