Hello I get CipherLap 'smartphone' with laser barcode scanner. This scanner is working like keyboard. My goal is to write simple app to read example data and valid it. This what I have done is:
Made an <Entry /> and hide it.
On start view I Focus() entry, click scan and TextChanged event write it to my <Label />
But after all its not rly smart and my question is. Is in xamarin.form any better way do get example data without using and hiding <Entry /> ?
ps. It also pop keyboard on screen and its also a bit annoying.
Usually these rugged smartphones, that includes a barcode scanner, make available some sort of SDK to integrate barcode scanning capability in third-party applications.
I don't have much experience with CipherLab (I work for Zebra Technologies and we've different SDKs available including one for Xamarin).
Looking on Cipherlab website I've not been able to find any SDK but you should contact the company that sold you the device.
I realise this is late but it may help others.
A Xamarin component/plugin/whatever they call it now would need to be implemented. Cipherlab mentioned plans for this but I don't know what happened.
You could look at my react native plugin to help you get started.
https://github.com/mribbons/react-native-cipherlab-scanner
You can also contact your supplier to get a copy of the sample native application.
It would be great if Cipherlab made this available publicly.
Related
macOS apps, e.g. Photos.app, provide a help panel to the user
Is there a way to author such a Help Book in your own macOS app?
Is there a way to at least provide a toolbar to be used for a table of contents?
I am asking specifically about the UI and all the user interactions. Not how to generally create and register a helpbook.
Update
Here is what I’ve been able to find/gather/learn from others. A Help Book appears to run on a separate app/process called “HelpViewer”. Any Apple macOS app displaying a help makes use of a DDMViewerController that isn’t public.
There is an “app.css” and an “app.js” being used by the Apple macOS app “index.html” of the Apple Help Book. The Javascript one manipulates the DOM to create the “show-hide” link that toggles the Sidebar. Haven’t been able to find how to instruct HelpViewer to use a sidebar.
There is a WWDC talk from back in 2014, “Introducing the Modern WebKit API” that talks about “User Scripts” and “Script Messages” which allow communication between a Webview and Cocoa. https://developer.apple.com/videos/play/wwdc2014/206/
AFAICS, there is no way to have HelpViewer display a custom view or have a sidebar. My guess is that you would have to implement everything yourself. That is an NSSplitViewController, NSToolbar, NSOutlineView, any Javascript alongside the “app.css” to get the look and feel.
Currently it's not possible to implement the sidebar as shown in the Maps and other built-in macOS applications from 10.13 onward.
Versions of macOS from 10.10 (built-in applications) implement sidebar navigation with HTML and JavaScript, and Apple Help Viewer itself offers a window.HelpViewer object with some hooks that enable/disable the Help Viewer's table of contents button. Once enabled, it will callback into your own JavaScript where you can show/hide TOC via CSS or JS.
From approximately 10.10, Apple's non-built-in applications have also been using this technique. For example, iTunes and Xcode help both do this.
From 10.13, macOS has a newer version of Help Viewer that provides an actual Cocoa-native table of contents and windows splitter, as well as some new properties on window.HelpViewer; presumably these can be used to enable/disable the Cocoa sidebar and populate the TOC, but these are undocumented and I'm not sure anyone outside of Apple has been able to reverse-engineer this functionality yet.
And in any case, it wouldn't work if you offer Help Books to pre-10.13 users, and the use of undocumented API's restricts applications from the App Store (although, I'm not certain that Apple scans Help Book JavaScripts for API usage as part of their review).
(There are also a lot of other changes to how Apple's built-in application Help works now, too, but that's another topic entirely.)
Thus the answer for now is we can't, or shouldn't, or just don't know how. Alternatives include using something like using jekyll-apple-help (no affiliation) or Middlemac 3 (my project), or just rolling your own.
For those interested in knowing how Apple does it, I've documented a lot of it here (disclosure: link to my own website).
I'm not sure whether Apple's current applications still use it, but there is a very old API on macOS for Help Books. Apple has documentation on how to create them and some introduction. In short: Help books are standard HTML files with additional proprietary anchors. Those anchors are accessible via the class NSHelpManager, e.g. to open the help book at a specific page.
See also this question.
Say I build a super mobile friendly web application that I want in the Play Store for Android users to be able to download.
Could I use Xamarin to:
Wrap the entire mobile app as a single WebView
Register for mobile push notifications
Essentially shortlining an MVP of an android app by using an existing web app? If so, is there any well-known process or documentation that demonstrates this?
Probably the best approach for you would be using Xamarin Forms with one or more pages containing only web views.
I don't love Xamarin Forms because usually for me Xamarin Android+iOS gives a better result in similar time, but your app would be so simple that doesn't make sense to do it with Xamarin Android.
Make sure that your web app will show only what makes sense to be shown in your app, otherwise you risk to see double header/footer, useless buttons... but if the website is yours adding a few parameters to change a bit the UI won't be a problem I guess.
Have a look at this example:
https://github.com/xamarin/xamarin-forms-samples/tree/master/WorkingWithWebview
Another approach is the use of Razor to build your pages in html directly inside your app, but if I understood well it's not what you need:
https://developer.xamarin.com/guides/cross-platform/advanced/razor_html_templates/
Although it is technically possible to do this as the previous answer has suggested. I would recommended firstly reviewing, the relevant stores guidelines on submissions. Apple for example will not allow a submission to their store of any application that simply mirrors the functionality of a website. I suspect Google's would likely be the same.
However that said, to answer your question, Xamarin.Forms would be appropriate for a simple application like the one you are suggesting. Or if you prefer to build to a specific OS, then in iOS with Xamarin you would use the Safari View Controller that was added in it's xcode 8.1 release. Android uses something similar as does windows.
EDIT:
You can use the Web View control in Xamarins Andorid native PCL project to encapsulate your mobile friendly website within an application here is the documentation:
Xamarin Android Developer link to Android Web View
As for push notifications, yes this is perfectly possible using Xamarin.Android. and varies on implementation depending on what you want to use as the back end to handle them, I.E. Azure's notification hub etc.
I'm new to Xamarin development and feel a little bit strange about how to design the UI interface in Xamarin.Forms (portable/shared).
If I just design the Xamarin Android or the Xamarin iOS, I can get the GUI with drag and drop to finish my UI (like in Windows Forms application) and the code for the UI is automatically generated. But in Xamarin.Forms, this one is not supported (we must use code or xaml). I understand that if we use Xamarin.Forms, the same code apply for both Android or iOS.
However it's a long approach to create the UI. Is it possible in Xamarin to create the UI in Xamarin Android / iOS project and then only do the functionality code in Xamarin.Forms (portable or shared)?
I know this is a common question but it can help many new developers either to choose using Xamarin or not...
There is the Xamarin.Forms XAML Preview for when you are coding in XAML:
But in the end, yes, you are coding events, and data converters, etc... and even with tools like the Interface Builder for iOS, you still have to do all the coding to tie the UI together.
On a personal note: Almost ALL the groups that I have worked with do not use the GUI design tools for any apps that are larger then a screen or two. On iOS we avoid .xib & .storyboard like they are the cause of the black plague.
I understood perfectly your situation. A good start is a Xamarin book that you can download for free for this page https://developer.xamarin.com/guides/xamarin-forms/creating-mobile-apps-xamarin-forms/
If you have been developed with WPF, in Xamarin you have the same concept. A good start is trying example in working apps to understand the structure and the app lifecycle. You can find a collection of examples and code at this link. You can create a form or with XAML or in the code. There are two ways. I advice you to start with XAML and C#.
I advice you to use Portable project and in this way you can share that not just across Xamarin project but with other kind of projects (such as a ASP.NET project).
You can think design Xamarin Forms UI like design Website.
Design website
You knowledge HTML
You need web browser to review
Design Xamarin Forms.
You knowledge XAML
You need Xamarin Previewer to review (Gorilla player, xamarin live player, LiveXaml)
Xamarin.Forms is great, for better understanding of XAML I encourage you to take the time and watch this video (https://evolve.xamarin.com/session/56e201d2bad314273ca4d813) where Charles Petzold goes into detail of how XAML works.
Before Xamarin Studio o Visual Studio had a XAML previewer for Xamarin.Forms I used GorillaPlayer (http://gorillaplayer.com/) is free and works well.
Also take a look in the Xamarin University and Examples.
James Montemagno is a name you must research when talking about Xamarin, he did some really cool and helpfull Xamarin Nuget Packages.
Hope I had pointed you in the right direction.
I understand that you are new to Xamarin.Forms. What I did when I was new to the framework was following a few courses on https://www.xamarin.com/university it is free for 30 days if I'm right (that must be enough to understand the basics). About the previewers I don't have good expierence with them. They are often slow or not working. For me it was often faster to just debug on the phone. Hopefully this will help you a bit.
Even if a nice designor was available, I would still argue that coding by hand is much more efficient : no bad code generated (exemple with constraint : no padding /margin set at the wrong place. No hardcoded size when it's not required etc).
You will have a better understanding and the learning curve is fast.
Back in the days, I started XAML with Silverlight with the amazing Microsoft UI designor : Blend. After few months, I ended up with an architecture that broke the designor (because of dependencies injected in constructor or because the designor struggled to discover controls in external assemblies). It was really painful and I lost a lot of productivity. Few months later, I was fluent with XAML and was even more productive than with a designor.
Nowadays, Visual Studio is snippet friendly for XAML control. I've created a few of them (like a grid with several column row auto, a snippet to generate the ContentPage.Resource with a style, etc).
It's a pain that is worth it.
Moreover you will learn a lot a things and will be more confident in your skills.
Give it a try for few months : you won't regret it !
Last but not least, as other suggest, when building a big app, even in iOS, most developpers I know don't use designor but code everything by hand because of snippet, helpers, extension methods etc.
I try to search available option about wp7 gesture. I found only Silverlight toolkit (http://silverlight.codeplex.com/) which has gesturelistener to get gesture events. It looks like some external library to add in the application. I’m wording are there any API comes with WP7 sdk right from Microsoft. But didn’t found anything so far.
I used MouseEventHandler and MouseButtonEventHandler to get any touch event in the emulator. It is not convient for a complicated multi touch, etc.
Please give me so link to study and discover gesture API. Thanks!
The Silverlight toolkit is an external library (to the SDK) but it is produced by people working at Microsoft. Most of the developers of the toolkit also work on the SDK. It is a way for them to release more controls but on a more frequent schedule than the main SDK.
The XNA framework contains some gesture detection but this is typically more complicated to include in a Silverlight application than the toolkit.
You could also write the gesture detection yourself using the manipulation or mouse events but I'd advise against this if possible.
I'd also advise against reinventing the wheel when there are already tools available.
There are gestures built into XNA; but either way, be it Silverlight toolkit or XNA library, you would have to add a reference in your solution.
This would be a nice starting place to learn about gestures in XNA: http://www.silverlightshow.net/items/XNA-for-Silverlight-developers-Part-5-Input-touch-gestures.aspx
Hope this helps!
Can I somehow get the DeviceUniqueId from the phone currently connected to the PC? (from a .NET C# desktop-app)
Great question.
If it's possible to get that information, you're best bet is using the CoreCon10 APIs for WP7. The Device class has Device.ID and Device.Name properties which might have the data you're looking for.
For more information on WP7 and CoreCon10 integration, checkout my blog post # http://justinangel.net/WindowsPhone7EmulatorAutomation
Basically, you'll have to get the connected WP7 device, and then check Device.ID and Device.Name. If that have the data you're looking for, it might be possible to install an app that'll report that back to you (on unlocked WP7 devices).