I'm working on a xamarin PCL project and I want to implement a print function.
In my shared code, I have a grid that contains a content view. the content view contains another grid with a custom list that contains data I want to print. as a toolbar item, i have a print button that calls in a dependency service but I don't know how to implement a print functionality for xamarin PCL content views.
The main platform is up.
Any help?
I'm working on a xamarin PCL project and I want to implement a print function. In my shared code.
You could implement a print function via DependencyService for per platform. And invoke the unified interface in your xamarin PCL project.
For the interface implementation about per platform, you could refer to the following document.
Android:Native Printing with Android.
IOS : IOS Print Sample. UWP: Print case.
Related
According to MvvmCross 5.3 documentation you can mix Xamarin.Forms and Xamarin.Native:
"With MvvmCross 5.3, you will now be able to mix and match Native Xamarin views with Xamarin.Forms pages using ViewModel navigation!"
My scenario is the solution contains Xamarin.Android and Xamarin.iOS projects which rely quite heavily on MvvmCross. Going forward I would like to be able to create new views/pages using Xamarin.Forms. I'm assuming this is what is meant by "mix and match".
Other than the above statement I can't find any documentation or examples on how to do this.
I tried extending the MvvmCross TipCal app to show a new Xamarin.Forms view/page without any luck.
Can someone explain or provide an example of how to mix and match Xamarin.Forms with Native Xamarin using MvvmCross?
I think if you truly want to mix forms/native you need to either create a custom view presenter or trick the existing view presenter to "embed" a forms page into a viewcontroller/fragment/activity.
I have created a helper library as a proof of concept to embed Xamarin.Forms content pages into fragments/activities/viewControllers but could use some help ironing out some bugs with Android. It seems to work fine for iOS.
Let's take iOS as an example.
This approach has you create you content page as normal, but also create a wrapper viewController. You embed the content page in the viewController and when you navigate, you navigate to the viewController wrapper instead of the content page.
https://github.com/dornerworks/Mvx.Forms.PageWrapper.iOS
https://github.com/dornerworks/Mvx.Forms.PageWrapper.Android
Is there a way to define a Label in Xamarin Forms (XAML or code-behind) AppXYZ that can be updated from the Xamarin Android AppXYZ.Android: MainActivity.cs and AppXYZ.iOS:Main.cs? i.e. upon an event in Android (e.g. BlueTooth) set a short text in a common Forms elements? After viewing many example, no clarity yet. MessageCenter perhaps?
In Android Project: MainActivity.cs (for example):
FormsAppXYZ.LabelXYZ.Text = "Updated string";
If not possible, then proper way to do this with Xamarin Android Native ? appreciated since I'll have to mix in the label into a shared Xamarin Forms Tabbed GUI.
Depending on how much Bluetooth work you need to do, my first suggestion would be to use MessagingCenter as you have already alluded to.
The other obvious approach would be to use a third party plugin, as I don't believe Xamarin have released one. I am currently aware of these two:
https://github.com/aritchie/bluetoothle
https://github.com/xabre/xamarin-bluetooth-le
any idea how I can start a native UWP page from a Xamarin Forms page?
The reason why I'm asking:
I have a XF application that needs to start a UWP library after a click event.
This library provides a special ORC reader.
Therefore I created a dependency service to run the platform specific function.
What I need now, is to open that UWP page, that contains the "Camera stream" to show the user what he is currently scanning.
And this is where I am hanging at the moment.
In my class that is called from the dep. service, I
myPage mp = new myPage();
But how can I show the new page?
Frame fr = Window.Current.Content as Frame gives me the error, that this page cannot be converted from a XF Frame to a Window Frame.
Or is there generally another way to handle this? Some advice would be great.
This sounds like a custom renderer.
Create a new OcrView class in your shared project inherited from View.
Place it on your Xamarin Forms XAML page.
Handle the OCR component in the UWP renderer.
Have a look at the Implementing a View section on this custom renderer overview
I am working in xamarin pcl project , I am trying to keep sliding drawer in my pcl project but i dont know how to do that .
Are you using Xamarin.Forms?
If not, i would advice to use a framework like MvvmCross (https://github.com/MvvmCross/MvvmCross)
This would enable you to split the actual implementation of the drawer / hamburger menu into the different UI projects like iOS and Android(maybe WP8 too).
Since those platforms all behave differently, for example Android uses Fragments which are replaced inside the activity containing your navigation drawer, you should use a custom presenter to determine where you want the specific platform to navigate to. You can find more information on that topic here: http://slodge.blogspot.co.uk/2013/06/presenter-roundup.html
I'm trying to add a Xamarin.Forms page to an existing Xamarin Android app.
I'm struggling to figure out how to mix native Xamarin Android pages and Xamarin.Forms pages.
All the articles and examples I have seen describe either Forms or Xamarin apps and not a hybrid of the two.
The best idea I have read about so far is to add a native stub and replace the content with Xamarin.Forms content but I'm not sure how to achieve this.
Update
I'm using MvvmCross so my android view is inherited from MvxActivity. I have a StackLayout containing views using Xamarin.Forms. How do I get XF to convert to android code so I can use with SetContentView?
When you create a new Xamarin.Forms project, for instance with a SharedProject approach, it will create the launcher project and initial class file that will be executed for you for each platform.
For instance on Android this is in MainActivity.cs. If you look inside this file you will notice that it inherits from AndroidActivity which in turn inherits from Activity, which is the typical class used on activities.
So you have two options available for you to create a mixed hybrid solution:-
1) Inherit from AndroidActivity in your platform-specifc stub-page should you want to display Xamarin.Forms content, or alternatively
2) Inherit from Activity, and do the same as usual.
If you want to display a Xamarin.Forms page from the stub-page you can then just use some boiler-plate code such as the following in the OnCreate method:-
SetPage({some class that returns a Xamarin.Forms.Page object, i.e. ContentPage});
You can then use the normal navigation that is specific to Android to either display a Xamarin.Forms page or a platform-specific Activity page.