- #Zebra 2 error permissions for android#
- #Zebra 2 error permissions android#
- #Zebra 2 error permissions code#
- #Zebra 2 error permissions Bluetooth#
Object type for printers returned are DiscoveredPrinters, theres an additional type that says USB but is not the target of this project
#Zebra 2 error permissions Bluetooth#
Stop searching for bluetooth devices/printersĭependencyService.Get().CancelDiscovery() Void LstDevices_ItemSelected(object sender, SelectedItemChangedEventArgs e) LstDevices.ItemSelected += LstDevices_ItemSelected Protected IDiscoveredPrinter ChoosenPrinter ObservableCollection printers = new ObservableCollection() Public static event PrinterSelectedHandler OnPrinterSelected Public delegate void PrinterSelectedHandler(IDiscoveredPrinter printer)
Public partial class ZebraBluetoothSamplePage : ContentPage
#Zebra 2 error permissions code#
Now, in the code behind I included a few commentaries on each method used so it could be very intuitive and also, passed the methods from the sample provided by Zebra team:. The stack layout would contain every control on the screenWe should have a page like this in XAML. The ListView will be used for display discovered printers. We would use 2 buttons and a list view, inside a StackLayout. Now, on Pages > ZebraBluetoothSamplePage.xaml. Let’s continue with the PCL code and then we implement the DepencyInjection on each Platform. We have a definition to find the Bluetooth Printers and another for Cancel the search. Void FindBluetoothPrinters(IDiscoveryHandler handler) Namespace ZebraBluetoothSample.Dependencies On the PCL project, the file IPrinterDiscovery.cs add the following:. Include on each project the nuget package for LinkOS (On solution explorer right click every project and click on Add > Add NuGet Packages search for LinkOS and Add Packages. On each platform project let’s create the Dependencies folder and the PrinterDiscovery class. For simplicity every action would be on the main ContentPage, let’s move this to the Pages folder. On the Dependencies folder add a new Interface called IPrinterDiscovery. Let’s create a folder Called Dependencies and other Called Pages (we can pretend we are not savages, even is this just a sample 😉 ). On the PCL project (ZebraBluetoothSample). 
Name your project and remember to select PCL project. From the Multiplatform options on the left click Blank Forms App. Lastly here’s LinkOS SDK, it contains a Xamarin.Forms project where most parts of this where taken from. #Zebra 2 error permissions android#
While I was testing on android i got this error Could not connect to device: read failed, socket might closed or timeout, read ret: -1, and honestly didn’t know why this happen, and try several things and was very frustrating, I saw the error even from Zebra Utilities app and the Zebra Setup Utilities didn’t connect either, but the Printer appear on the available list so… didn’t know what to do… as last option I do what support techs always do… ( Turn off and on the Android device and voila! Was able to connect ). #Zebra 2 error permissions for android#
Zebra team also have an app for Android and Windows called Zebra Setup Utilities, with this app you can set up friendly name of the printer, see printer status and other info. On iOS you have to connect the printer from Settings > Bluetooth first. I would recommend you download on iOS and Android Zebra official app (just so you know, test connection with their own app before blame Xamarin, Android or Apple) it’s called Zebra Utilities with this app you can test if your device can communicate with your printer and even print some samples. Scan for bluetooth devices (printers) and list it on a ListView. Zebra LinkOS SDK (version 1.1.75 at the time of this post). 
Hi everyone, recently I was assigned to make an app on Xamarin that can communicate with a Zebra Printer via Bluetooth, It wasn’t exactly the most straight forward experience, since the documentation is lacking of structure let say, but have to mention that the response time of the Zebra team on Xamarin repository on GitHub was insanely fast (1/2 hour).
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