xamarin.forms

问题 How can I remove the top bar from iOS project of Xamarin.Forms? Where the time and "Carrier" word are .. or at least measure its height? Just to be sure.. I don't want to see battery, time... I want to hide the bar in the red rectangle: 回答1: You can add this code on your AppDelegate.cs inside FinishedLaunching method after LoadApplication (new App ()); on iOS Project: UIApplication.SharedApplication.StatusBarHidden = true; also add this on your info.plist : <key

问题 I dont want to that system font size have any effect in my app. If i increase system font size in android settings, the text in my app will be unreadable. (Too big.) How can i solve it? PS: Im writing my code in C#, Xamarin.Forms project. Thanks 回答1: Disable system font size effect in my App If you need set a fixed text size for your application, you try using the following code to implement this feature: private void initFontScale() { Configuration configuration = Resources.Configuration;

问题 How to set the default selected Tab inside the tab bar on Xamarin forms shell? <?xml version="1.0" encoding="UTF-8"?> <Shell xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" x:Class="TestApp.NavigationShell" xmlns:pages="clr-namespace:TestApp.Pages" xmlns:pageModels="clr-namespace:TestApp.PageModels"> <TabBar Route="testapp"> <Tab Title="Saved" Icon="tabDashboard" Route="dashboard"><ShellContent ContentTemplate="{DataTemplate pages

问题 How to set the default selected Tab inside the tab bar on Xamarin forms shell? <?xml version="1.0" encoding="UTF-8"?> <Shell xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" x:Class="TestApp.NavigationShell" xmlns:pages="clr-namespace:TestApp.Pages" xmlns:pageModels="clr-namespace:TestApp.PageModels"> <TabBar Route="testapp"> <Tab Title="Saved" Icon="tabDashboard" Route="dashboard"><ShellContent ContentTemplate="{DataTemplate pages

问题 Is there any way to check if keyboard is open or not in Xamarin Forms? Are there any events getting fired when the keyboard opens or closes? If so, where can I find an example of it? 回答1: I don't believe that there's a Xamarin.Forms way of doing it. Anyway, for the different platforms (at least Android and iOS) there is a way to achieve what you want. Android Under android there is InputMethodManager class. You can obtain it from your activity var inputMethodManager = (InputMethodManager)this

问题 Is there any way to check if keyboard is open or not in Xamarin Forms? Are there any events getting fired when the keyboard opens or closes? If so, where can I find an example of it? 回答1: I don't believe that there's a Xamarin.Forms way of doing it. Anyway, for the different platforms (at least Android and iOS) there is a way to achieve what you want. Android Under android there is InputMethodManager class. You can obtain it from your activity var inputMethodManager = (InputMethodManager)this

问题 I want to download an image and store it in specific folder in local storage. I am using this to download image: var imageData = await AzureStorage.GetFileAsync(ContainerType.Image, uploadedFilename); var img = ImageSource.FromStream(() => new MemoryStream(imageData)); 回答1: Create a FileService interface in your Shared Code, create a new Interface, for instance, called IFileService.cs public interface IFileService { void SavePicture(string name, Stream data, string location="temp"); }

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed last month . I have a problem with tasks in c#, and don't know how to use async await . I have 4 methods, something like: private async Task Name(parameters) {} How can I run all 4 methods simultaneously in the constructor, to reduce the execution time and optimize cpu usage. I tried Parallel.Invoke(() => but

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed last month . I have a problem with tasks in c#, and don't know how to use async await . I have 4 methods, something like: private async Task Name(parameters) {} How can I run all 4 methods simultaneously in the constructor, to reduce the execution time and optimize cpu usage. I tried Parallel.Invoke(() => but

问题 I have a Xamarin forms application. It has a page. That page has a listview. The listviews is bind to a sourcelist. What I want is to decide what custom control to use based on a specific property that each item in the list has. How can I achieve this? It is also required that the custom control binds to values from the list. I tried the following: <ContentView Content="{Binding IsPriority, Converter={StaticResource RoadIndicatorBackgroundValueConverter}}" ControlText="{Binding TowingOrder