I am using Android Device manager "Pixel 2 Pie 9.0 – API 28"
i try to input my Xamarin form app value to Sql server table using Asp.net Api but not working with "Java.Net.ProtocolException: 'unexpected end of stream' I got this error."
please tell me any solution or any link. help me!
Thank you.
So, im trying to implement this libraries inside my project:
Firestore Android:
https://www.nuget.org/packages/Xamarin.Firebase.Firestore/60.1142.0-beta2
Firestore IOS:
https://www.nuget.org/packages/Xamarin.Firebase.iOS.CloudFirestore/
And I've only found 1 example of how to use them both:
https://github.com/yamachu/Sample-Firebase-Cloud-Firestore-Xamarin.Forms
Since I'm having problems when adding/updating in the mapping of .NET objects to Java/NSObject respectively. Does anyone know a library that provides an example of that?
Thanks!
I am using Xamarin.Forms.DataGrid for displaying data as a report.When i click any number i want to open phone dialer.
i have implemented opening phone dialer using xamarin.essentials i want to implement it when i click a number or click on a row in datagrid.
How can i do that.
please help.
`< / StackLayout >
< dg:DataGrid x:Name="SalesGrid" RowHeight="45" FontSize="12" HeaderFontSize="15" HorizontalOptions="FillAndExpand" >
< dg:DataGrid.Columns >
< dg:DataGridColumn Title="Date" PropertyName="Date" Width="150" HorizontalContentAlignment="StartAndExpand" VerticalContentAlignment="CenterAndExpand"/>
< dg:DataGridColumn Title="Number" PropertyName="Num" Width="170" HorizontalContentAlignment="StartAndExpand" VerticalContentAlignment="CenterAndExpand" />
< dg:DataGridColumn Title="nhg" Width="0" >
< dg:DataGridColumn.CellTemplate >
< DataTemplate >
< ContentView VerticalOptions="FillAndExpand" HorizontalOptions="StartAndExpand" >
< Label Text="{Binding SALES}" HorizontalOptions="Center" VerticalOptions="Center" TextColor="White" />
</ ContentView >
</ DataTemplate >
</ dg:DataGridColumn.CellTemplate >
</ dg:DataGridColumn >
</ dg:DataGrid.Columns >
</ dg:DataGrid >
</ StackLayout >`
I tried like below:
Created a new property named verticalOption:
private LayoutOptions verticalOption;
public LayoutOptions VerticalOption
{
get => verticalOption;
set
{
verticalOption = value;
OnPropertyChanged(nameof(VerticalOption));
}
}
Then set its value initially as FillAndExpand:
VerticalOption = LayoutOptions.FillAndExpand;
At one point I need its value as CenterAndExpand.
VerticalOption = LayoutOptions.CenterAndExpand;
Finally on XAML:
<StackLayout
Orientation="Vertical"
HorizontalOptions="CenterAndExpand"
VerticalOptions="{Binding VerticalOptio}">
But the CenterAndExpand value is not working. Always stack layout is on the top section, not coming to the center position. Is anything wrong with my implementation?
Hi, i'm new to Xamarin and in my Xamarin.Forms app after user click on CheckOut button then it will push notification to my Web API through FCM.
So how can i send notification to my Web API ?
I am using a MasterDetail template and I also have a login page. In my app when I am logged out I have set:
MainPage = new LoginPage();
When I will successfully log in I am just changing MainPage to MasterDetailNavigation like this:
MainPage = new MasterDetailNavigation();
However, there is no animation (page transition) when I am changing MainPage. How can I add it? It would be great to have i.e. the same animation which is when we are doing:
Navigation.PushAsync(new SomePage())
How can I achieve this animation?
Hi, i'm new to Xamarin and in my Xamarin.Forms app after user click on CheckOut button then it will push notification to my Web API through FCM.
So how can i send notification to my Web API ?
Does DellyShop only contain design?
All the screens you need, all renderers and customviews are ready for you. All you have to do is prepare your service and connect it to the models. The application is completely ready and full application.
DellyShop is an e-commerce mobile application. The design was written with Xaml code. The purpose of the application is to save dozens of hours spent on design and coding, so the time spent on design and coding will be spent at the back end. The application is not just about XAML code, the Xaml code is full of logical architecture behind it. Simple and beautiful template structure, CustomRenderers, CustomViews, MVVM architecture design includes. DellyShop has a clear design and infrastructure. The application contains a very well designed design structure and descriptive codes. DellyShop supports all language structures, regardless of RTL or LTR. Arabic and English language structure.
Why Should I Buy This Application?
DellyShop will save you a great deal of time with its superior design and infrastructure features Design is a time-consuming and difficult process in Xamarin Forms. Most super developers lose a lot of time with the Design part, but DellyShop will save you time.
DellyShop will never put you in a mold with its flexible and dynamic structure.
Everything is easy, everything is simple! Even if you don’t have any knowledge about Xamarin, we are ready to help you with our explanatory documents and our 24/7 support line. Simply send us your purchase code for support. If this code is verified by us, we will be happy to support you!
With this Application you can learn Xamarin.Forms and you can learn what can be done with Xamarin and what are the limits of Xamarin. Designing on Android and iOS mobile platforms is a waste of time. Some developers may even quit this enthusiastic work because of the design part.
Application Features
Hi everyone !
I'm trying to use a tab. But when I click x, my pages look black.
I am working on xamarin forms. Where I am creating Button from code behind. When I specify WidthRequest and HeightRequest for the button, the button text is not showing and If I remove WidthRequest and HeightRequest then the button text is showing.
Code for creating button
Button buttonRemoveItem = new Button()
{
Text = "-",
TextColor = Color.White,
WidthRequest = 25,
HeightRequest = 25,
CornerRadius = 10,
BackgroundColor = Color.Red
};
output
If I remove WidthRequest and HeightRequest
then my code looks like
Button buttonRemoveItem = new Button()
{
Text = "-",
TextColor = Color.White,
BackgroundColor = Color.Red
};
and the output
How to resolve this?
I have implemented push notifications to my app using firebase console. Now what I would like to do is, trigger the push notification at my server side.
For eg: when new user signs up, I want to trigger the notification from server. How can this be done
I have come across a very strange bug -- not sure if it in my app, Xamarin.Forms, or iOS itself.
My app switches between several pages derived from ContentPage. When I have my app and another app, for example the iOS "Pages" app on my iPad side-by-side (half screen). It seems to be related to whether the other app is in an input field before switching. Anyway, I press a Button in my app to switch to another page, and my page is kinda there, but the dark blue background want is white, plus no interaction (so, appears "frozen"). But, if move the slider to make it a 2/3 split, it immediately works.
When my app starts in 2/3 screen mode, the result is a bit comical -- the first half of my app is OK (the leftmost third of the screen), but other half refuses to allow interaction (and has white background). Weirdest thing -- one of my buttons straddles the break -- the left part works fine, the right does not.
I've not seen this on an iPad that has not updated to 13.x yet. I'm suspcious that this might be the same issue or related to White Screen after navigating to MasterDetailPage on iPAD iOS 13.2 and iOS 13.0 Broke MasterDetailPage on iPads?, so I added tags that might relate. But, here's the thing -- I'm currently using XF 4.3 (4.3.0.991221). The "solution" for the others was to update to 4.3. And, I'm not really using MasterDetailPage, and those issues don't mention SplitScreen.
I'd just like to hear if someone else has seen something like this, or has any quick suggestions before I try to create a simplified example.
How can i use a Database that i made outside Xamarin ?
I don't want to create a new Database in Xamarin i just want my app to connect to old Database ?
I have an app, that gets every mp3 file on the device, then it decodes it using MP3Sharp library to PCm bytes. They are then send to another device via Bluetooth. The other device then assembles AudioTrack class, and starts playing it, then it starts writing to the AudioTrack while the Bluetooth stream is available. The problem is that every couple seconds, the there is a 1 - 2 s of white noise and than the player start the next part of the song. How would I remove that. Is it something about the file or the player?
This is how I send the file to dependency service:
`private void SendData(object sender, EventArgs e)
{
System.Threading.Tasks.Task.Run(() =>
{
// open the mp3 file.
MP3Stream stream = new MP3Stream(pathList[ShowSongFile.SelectedIndex]);
// Create the buffer.
byte[] buffer = new byte[4096];
// read the entire mp3 file.
int bytesReturned = 1;
while (bytesReturned > 0)
{
bytesReturned = stream.Read(buffer, 0, buffer.Length);
DependencyService.Get<BluetoothManager>().Write(buffer);
}
// close the stream after we're done with it.
stream.Close();
}).ConfigureAwait(false);
}`
And this is how I receive the file on another device:
`public void Read()
{
System.Threading.Tasks.Task.Run(() =>
{
int _bufferSize;
AudioTrack _output;
_bufferSize = AudioTrack.GetMinBufferSize(44100, ChannelOut.Stereo, Android.Media.Encoding.Pcm16bit);
_output = new AudioTrack(Android.Media.Stream.Music, 44100, ChannelOut.Stereo, Android.Media.Encoding.Pcm16bit,
_bufferSize, AudioTrackMode.Stream);
_output.Play();
while (mmInStream.CanRead)
{
try
{
byte[] myReadBuffer = new byte[2000];
mmInStream.Read(myReadBuffer, 0, myReadBuffer.Length);
_output.Write(myReadBuffer, 0, myReadBuffer.Length);
}
catch (System.IO.IOException ex)
{
_output.Stop();
System.Diagnostics.Debug.WriteLine("Input stream was disconnected", ex);
}
}
_output.Stop();
}).ConfigureAwait(false);
}`
Hello everyone!
I have a theming option in my app, that is not perfect, but functions well enough for my purpose, at least that's what I thought until I started making the light and dark themes and realized I needed to make a light and dark icons as well... Only problem is my icons are statically coded... So I figured, why not use the same <style ... tags for the icons as well?
Here is what I have in the code.
Here's a snippet from my theme code.
<Style x:Key="ic_Add" TargetType="{x:Type ToolbarItem}">
<Setter Property="IconImageSource" Value="ic_plus_26px.png" />
</Style>
<Color x:Key="primary-title-color">#919191</Color>
<Color x:Key="NavigationPrimary">#6F6F6F</Color>
<Color x:Key="AppBackgroundColor">#373739</Color>
and when I attempt to implement it...
<ToolbarItem
x:Name="btnAddLoad"
Clicked="AddLoad_Clicked"
StyleId="{StaticResource Key=ic_Add}"
Text="Add" />
My problem is that the icon is not showing up... I've tried using the implementation as both StyleId and ClassId both with the same results...
Any ideas or recommendations?
Thanks!
Ok, this may be a bit difficult to explain for me, but i'll try my best.
We (and by 'we' I mean 'my higher ups') want to phone a specific number trough our app. That is the easy part.
The problem is that, when the button is pushed, prompts you to the telephone editor screen, were you can delete digits, make the call or cancel.
We (refer to the previous parentheses) don't want that. We need to, when the user presses the aforementioned button, call that number directly.
With no intermediate steps.
If this is not possible, please give us a thorough explanation. I'm a bit in a pickle here.
Kind regards
Is there a way how I can use triggers from the code? I can't seem to find any examples. Basically I have some behaviors for my entries, and I want to trigger the Login Button's "IsVisible" property based on the 'IsValid' property from my entry's behavior:
public class PEntry : Entry
{
public PEntry ()
: base ()
{
}
/// <summary>
/// Determines whether this instance is valid.
/// </summary>
/// <returns><c>true</c> if this instance is valid; otherwise, <c>false</c>.</returns>
public bool IsValid
{
get{
// iterate through each entry's validator behaviors
foreach (var behavior in this.Behaviors) {
var validatorBehavior = behavior as IValidatorBehavior;
if (validatorBehavior != null) {
if (!validatorBehavior.IsValid) {
return false;
}
}
}
// default to true
return true;
}
}
}
Hey, I'm new to xamarin, however trying to create a simple joystick that consists of two sliders inside a absolute layout. One of them is rotated 90° so it can read a y value while the other one reads a x value.
My problem is, that if one of them is overlapping the other, the one in the background doesn't change position when I touch it while the other does.
Is there a way to have both acitve at the same time, is there a better way to achieve my goal?
My first idea would be to deactivate the first slider after it detects that it is touched and then read out the value of the other, however I think there must be a better solution to this.
<AbsoluteLayout
IsVisible="False"
x:Name="joystick_xy"
HeightRequest="200"
WidthRequest="200"
HorizontalOptions="Center"
VerticalOptions="Start"
BackgroundColor="CadetBlue">
<Slider WidthRequest="200"
HeightRequest="200"/>
<Slider Rotation="90"
WidthRequest="200"
HeightRequest="200"/>
</AbsoluteLayout>
Hi guys,
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Hi,
Is there any way to white-list the app for the notification purpose described here using the code instead of going to the settings and do it manually?
https://onesignal.com/blog/manufacturers-interfere-with-reliable-notifications/
Thanks,
Jassim