Hello everyone, I'm trying to develop TabStrip in iOs, using Xamarin Forms, using this code from GitHub https://github.com/supersume/XLPagerTabStrip, I was able to translate it to work using Xamarin Forms, but it's not showing the content of the page. Could someone please help me, I do not have much knowledge on iOS.
The sample code is attached.
Hi,
I am new to Xamarin (and coding in general, but learning...) and have a question about switching pages.
I have a Login page which is called on Startup This is a ContentPage.
**Login.xaml **
Upon successful login it fires this. I don't want the MainPage to have a "Back" button to go back to the login screen
Login.xaml.cs
MainPage.xaml is a TabbedPage with Navigation
Each of the pages there are all Valid. The Settings page has a Logout button.
**
Settings.xaml**
With the Logout in Settings.xaml.cs doing this
But the end result is that I have the Login screen... with the Tab bar at the bottom
What have I done wrong? I'd like it so when I logout the tabs aren't visible.
Thanks,
Matt
I have used release mode and debug mode too with Xamarin.forms:
Build-> Archive for Publishing wizard.
After publishing, I selected Ad Hoc and saved the APK to my local drive.
I have min SDK version API level 15 (4.0.3) with target API 23, I have required permission.
I have selected all items from list on Suported ABIs (armeabi, armeabi-v7a, x86, x86_64 and arm64-v8a)
I test with my Nexus 5 with 6.0.1 but I send APK
Always show same error...
(Spanish) Error de análisis
se ha producido un error al analizar el paquete
(English) Parse error
There was a problem parsing the package
I have tested with my custom application and I have generated a sample APK for this library
https://components.xamarin.com/view/zxing.net.mobile.forms
Why?
Recently I came across the need to build an APP that changes the color of images walls taken from the camera by selecting a color and clicking on the wall
and only the color of the wall in the image would change.
Is there any known api that can help me with this?
Thanks
Hello, everyone:
I was playing around with SyncFusion charts. I have an example that uses it and was trying to modify it to know how it works.
I was able to modify all aspects of visual representation but the X labels.
When calling the constructor, I added the next code:
PrimaryAxis = new CategoryAxis()
{
Title = new ChartAxisTitle()
{
Text = axisXTitle,
Font = Font.SystemFontOfSize(Device.GetNamedSize(NamedSize.Small, typeof(ChartAxisTitle))),
TextColor = Color.Blue
},
LabelRotationAngle = 90,
EdgeLabelsDrawingMode = EdgeLabelsDrawingMode.Center,
LabelPlacement = LabelPlacement.BetweenTicks,
LabelsIntersectAction = AxisLabelsIntersectAction.None,
TickPosition = AxisElementPosition.Outside,
ShowMajorGridLines = false,
LabelStyle = new ChartAxisLabelStyle()
{
TextColor = Color.green,
Font = Font.SystemFontOfSize(Device.GetNamedSize(NamedSize.Micro, typeof(ChartAxisLabelStyle)))
}
}
No matter how I define font size, what size I put (micro, normal, big, 45, 1000...) the size still remain the same. I read that in older versions of SFCharts there was a bug for this, but I'm updating it via NuGet Package Manager to the almost last version (14.4.0.20, because newer versions are crashing on my system, and didn't have time to check why) and still have this issue, that it was suppose to be fixed on v12 or v13.
Any ideas what is happening here?
I want to provide the toolbar icon image from a byte array but ICON property requires a fileimagesource.
I don't know how to do this.
Please help ASAP
I have login in Webview, after authentication I am navigating to Dashboard page. After click on log-out(in dashboard) I navigate back to login-page which has WebView, but still WebView retains token. So how to clear cache(token) or is there any way to have LoginPage in WebView
Hi,
I'm getting the below error while building the application using linking SDK assemblies option and with out shared runtime (as shared run time causing error while release the application.)
Severity Code Description Project File Line Suppression State
Error The "LinkAssemblies" task failed unexpectedly.
Mono.Linker.MarkException: Error processing method: 'System.Void System.Net.Http.HttpClientHandler/c__async0::MoveNext()' in assembly: 'System.Net.Http.dll' ---> Mono.Cecil.ResolutionException: Failed to resolve System.Void System.Net.WebHeaderCollection::AddValue(System.String,System.String)
at Mono.Linker.Steps.MarkStep.HandleUnresolvedMethod(MethodReference reference)
at Mono.Linker.Steps.MarkStep.MarkMethod(MethodReference reference)
at Mono.Linker.Steps.MarkStep.MarkInstruction(Instruction instruction)
at Mono.Linker.Steps.MarkStep.MarkMethodBody(MethodBody body)
at Mono.Linker.Steps.MarkStep.ProcessMethod(MethodDefinition method)
at Mono.Linker.Steps.MarkStep.ProcessQueue()
--- End of inner exception stack trace ---
at Mono.Linker.Steps.MarkStep.ProcessQueue()
at Mono.Linker.Steps.MarkStep.Process()
at Mono.Linker.Steps.MarkStep.Process(LinkContext context)
at Mono.Linker.Pipeline.Process(LinkContext context)
at MonoDroid.Tuner.Linker.Process(LinkerOptions options, LinkContext& context)
at Xamarin.Android.Tasks.LinkAssemblies.Execute(DirectoryAssemblyResolver res)
at Xamarin.Android.Tasks.LinkAssemblies.Execute()
at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
at Microsoft.Build.BackEnd.TaskBuilder.d__26.MoveNext() 
\Program Files\Microsoft Visual Studio\2017\Enterprise\MSBuild\Xamarin\Android\Xamarin.Android.Common.targets 1577
if shared runtime option is unchecked and link option none httpclient.GetStringAsync() method will raise the following error
Method 'System.Net.WebHeaderCollection.AddValue' not found.
but application is working fine when the shared runtime option is ticked and 'SDK assemblies only' link option selected in the android options tab.
I could find lot of similar threads but couldn't find any solution for this one.
Thanks,
Eins
Hi All,
We create a Rich Text WYSIWYG Editor for Xamarin.Forms. It's easy to use, powerful, and open-source
https://github.com/XAM-Consulting/TEditor
Hope everyone can enjoy it.
Thanks,
my code
public static List<CategoricalData> GetCategoricalData()
{
List<CategoricalData> data = new List<CategoricalData>();
for (int i = 0; i < 90 ; i++)
{
data.Add(new CategoricalData() { Value = 10+i, Category = "" });
}
return data;
}
Chart :
var chart = new Telerik.XamarinForms.Chart.RadCartesianChart
{
VerticalAxis = new Telerik.XamarinForms.Chart.CategoricalAxis(),
HorizontalAxis = new Telerik.XamarinForms.Chart.NumericalAxis(),
HeightRequest = 400,
};
var series = new Telerik.XamarinForms.Chart.BarSeries();
series.ItemsSource = GetCategoricalData();
series.ValueBinding = new Telerik.XamarinForms.Chart.PropertyNameDataPointBinding
{
PropertyName = "Value"
};
series.CategoryBinding = new Telerik.XamarinForms.Chart.PropertyNameDataPointBinding
{
PropertyName = "Category"
};
chart.Series.Add(series);
Frame asd = new Frame ();
asd.Contect = chart;
this.Content = asd;
i want display 80 multiline in chart please help me.
I been watching tutorials in MVA, but I'm getting bothered, because on the course, his emulator looks like a phone, how can I make mine look like a phone and not look like a forms app. I'm using vs2017 15.3.3, windows 10 pro 1703
Hey
I am having an issue with my android Service.
When I am installing the apk from release my Service isn't sending any notifications
but when i start it from debug everything is working just fine...
idk... am i missing sth?
Thanks
Hi,
I'm using ThriveGmbH.BottomNavigationBar.XF component to display tabs at bottom on Android in order to get native like feeling. Now the problem is, I would like to display some graphic/text beneath the tabs. Please refer to attached image to get the idea what I'm willing to achieve. Any suggestions.
Thanks
Hello.
I implemented MasterDetailPage into my app, but on Windows 10 the behavior seems a bit weird.
When the app starts, the menu is showing as expected. But when I click an item, it disappears with no way to go back or show the menu again.
It's simple to reproduce.. Download the sample: https://github.com/xamarin/xamarin-forms-samples/tree/master/Navigation/MasterDetailPage
Run the UWP app on Windows 10 and click any menu item. Now you're stuck on that page, with no way to navigate further.
Is there a way to choose a contact in Xamarin.Forms? I'd like to use contact's email address instead of the user typing the email address again.
I found something for iOS and Android.
http://developer.xamarin.com/recipes/ios/shared_resources/contacts/choose_a_contact/
Hi,
I want to open a browser in iOS with my app with this line of code:
Device.openUri(new Uri("http://www.google.com"));
but when that line executes I get this error:
Could not initialize an instance of the type 'MonoTouch.Foundation.NSUrl': the native 'initWithString:' method returned nil.
It is possible to ignore this condition by setting MonoTouch.ObjCRuntime.Class.ThrowOnInitFailure to false.
I created a default MasterDetailPage on Visual Studio 2017. App code:
MainPage = new NavigationPage(new MasterDetailPage1());
When I use this to hide navigate title bar:
NavigationPage.SetHasNavigationBar(this, false);
1/ It has a very weird transition, the MainPage scrolls up before showing MasterDetailPage1.
2/ The menu display is error, it cover the whole menu bar?
3/ How to add item icon to this default MasterDetailPage, the default text on default detail page is unclear to me
Hey,
Anyone have ever implemented some custom crop image UI that can be used in forms ios/android/win phone?
What I`m trying to achieve is something like instagram that crop a image to a square, so I can store in a db and show it in a circle image after to give my app a better design.
Someone have anything like this? So I will not start from scratch...
Thanks
How do i detect enter key press in Editor?
Can't hide navigation panel on MasterDetailsPage on UWP after updating to XF 2.3.3. It was hidden by default before when not using navigation page as a container for Detail.