Questions tagged as 'xamarin'

Tagged questions
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postasync submitting content null

I'm in a Xamarin project where I use a web service in PHP. The problem is as follows, I send json to ws but when I receive it by POST, nothing arrives on it C # code: HttpContent content = new StringContent(json, Encoding.UTF8...
asked by 18.07.2018 / 20:20
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CarouselPage Xamarin

Recently I made a carouselpage in Xamarinforms, Android works perfectly, but in iOS it seems to be a bit loose, and have a balloon effect vertically, and the carouselpage should only be horizontal. I discovered that when the NavigationPage.SetHa...
asked by 18.07.2018 / 08:38
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Pass a property to a Label on xamarin

I need to make the Label of my code receive the value of a property. <Grid BackgroundColor="Black"> <Grid.ColumnDefinitions> <ColumnDefinition></ColumnDefinition> <ColumnDefinition>...
asked by 06.07.2018 / 20:46
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ListView LoadMore Xamarin

Hello, guys. I need to get my data to be loaded gradually in a listview, searching a little I found a material on the ListViewCachingStrategy, however, it is difficult to adapt my need, no example matches what I really need. Come on, I have a...
asked by 13.07.2018 / 17:11
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Accessing MainView from another class

Hello, here is a snippet of the main class code, in it I basically set up and first "Page" with a menu in the footer (I just left a menu button to not get huge post) <?xml version="1.0" encoding="utf-8" ?> <ContentPage xmlns="http://xa...
asked by 04.07.2018 / 14:57
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How to optimize the performance of my application when doing HttpClient resequitions

I'm developing an app using Xamarin.Forms , but I have a problem. Settings such as color, company name, cover image and logo come through a request for a web service call whose return is a JSON , but every time I have that pull this informat...
asked by 03.07.2018 / 02:26
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Hide navigation bar when using MasterDetailPage

I need to hide the navigation bar in xamarin forms 3.0 . I tried this, but it did not work: link I wanted to hide the navigation bar to be able to create a custom bar, I also need a way to open the menu . Code: link     
asked by 02.07.2018 / 15:27
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Two touches in ListView - Xamarim Forms

Is it possible to have ONE touch for a certain function (now I have to select an item using ItemTapped ) and TWO touches on the same ListView to do another function? I did not get this information from Microsoft's website and fro...
asked by 27.06.2018 / 16:53
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Message if SearchBar is empty

I can not leave a% void% empty when I click on SearchBar , I have to force the user to fill it. Here is the code: //Pesquisa a cidade quando o botão de Pesquisa do teclado é clicado private async void MainSearchBar_OnSear...
asked by 29.06.2018 / 15:27
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Doubts the SendBird API to create a chat

Good evening guys, I'm doing a little project and I'm using the SendBird API to create a chat, but I'm having problems receiving the message that was sent from one user to another, could they help me? Here is the code to receive the message...
asked by 23.06.2018 / 23:57