I need to authenticate user in my app, and for that I want to spawn another window with Cocoa WebView control. The problem is that I can't do anything with that control from C# code, and can't find any documentation for it :(
Trying to use
WebViewWindow.MainFrame.LoadRequest (Request);
But it throws exception of some kind. How to properly open URL in that WebView? Maybe using something like GeckoFX instead is a good idea?
Also I'll need to get back url that user was redirected to. How to do this?
Thanks.
you can use like this
public override void AwakeFromNib()
{
base.AwakeFromNib();
webView.MainFrame.LoadRequest(new NSUrlRequest
(new NSUrl( "http://www.google.com)));
}
Related
I realize there are these events:
protected override void OnSleep()
{
base.OnSleep();
}
protected override void OnResume()
{
base.OnResume();
}
But is there any event that is called in which I could perform a logging action, before the app is finally swiped out of view and closed?
No there are only 3 lifecycle events for a Xamarin.Forms application. See documentation. They are:
OnStart(), OnSleep(), and OnResume().
What you could do is just do whatever you need to in OnSleep and reverse it in OnResume. That way whether the user comes back or not, you've handled what you need to handle.
No, and it is technically impossible to make something like that on iOS and Android. On UWP you could make some native code that would invoke this on Xamarin.Forms project. But I don't think that anyone is interested in such UWP only feature on Xamarin.Forms, so if you need it you will probably need to implement it yourself.
I'm actually working on a Xamarin Forms application that need push notifications. I use the Plugin.PushNotification plugin.
When the app is running in the foreground or is sleeping (OnSleep), I have no problem to open a specific page when I click on a notification that I receive. But I was wondering how can I do that when the app is closed. Thanks!
I finally found the answer by myself and I want to share it in case someone needs it.
Nota bene: according to the official documentation of the plugin, it's Xam.Plugin.PushNotification that is deprecated. I use the new version of this plugin, Plugin.PushNotification which uses FCM for Android and APS for iOS.
There is no significant differences to open a notif when the app is running, is sleeping or is closed. Just add the next callback method in the OnCreate method (MyProject.Droid > MainApplication > OnCreate) and FinishedLaunching method (MyProject.iOS > AppDelegate > FinishedLaunching):
CrossPushNotification.Current.OnNotificationOpened += (s, p) =>
{
// manage your notification here with p.Data
App.NotifManager.ManageNotif(p.Data);
};
Common part
App.xaml.cs
// Static fields
// *************************************
public static NotifManager NotifManager;
// Constructor
// *************************************
public App()
{
...
NotifManager = new NotifManager();
...
}
NotifManager.cs
public class NotifManager
{
// Methods
// *************************************
public void ManageNotif(IDictionary<string, object> data)
{
// 1) switch between the different data[key] you have in your project and parse the data you need
// 2) pass data to the view with a MessagingCenter or an event
}
}
Unfortunately there is no succinct answer for either platform. Generally speaking, you need to tell the OS what to do when it starts the app as a result of the push notification. On both platforms, you should also consider what API level you are targeting, otherwise it won't work or even crash the app.
On iOS, you will need to implement this method in AppDelegate appropriately: FinishedLaunching(UIApplication application, NSDictionary launchOptions). The launchOptions will have the payload from the push notification for you to determine what to do with it (e.g. what page to open). For more information on iOS, Xamarin's documentation is a good place to start.
Android has a more complicated topology in terms of more drastic differences between API levels, whether you are using GCM/FCM, as well as requiring more code components. However, to answer the question directly, you will need to handle this in OnCreate(Bundle savedInstanceState) of your main Activity. If you are using Firebase, the push notification payload is available in Intent.Extras. Again, Xamarin's documentation has a good walkthrough.
Finally, note that the Plugin.PushNotification library you are using has been deprecated. I suggest you either change your library and/or your implementation soon. Part of the reason that library has been deprecated is because Google has deprecated the underlying Google Cloud Messaging (GCM) service, which will be decommissioned on April 11, 2019.
I am working on a Cocoa WebView based browser application.
Basically, I would like to have it so when the user navigates to a url, for example:
http://a/b.php, by clicking on a link on the previous page of a website, my application intercepts the "on navigate" event and changes the URL to http://a/b.php?enableapi=1
Any ideas??
Thanks in advance.
You need to assign an object as the web view's WebPolicyDelegate and implement the webView:decidePolicyForNavigationAction:request:frame:decisionListener: method.
In that method, you must call one of the WebPolicyDecisionListener protocol methods on the object that is passed as the decisionlistener parameter to the method. The three WebPolicyDecisionListener protocol methods are ignore, use or download.
You can then pass ignore to the listener and handle the link some other way for those links you're interested in intercepting.
I'm stuck on a very stupid issue. I've built my mac osx app user interface with Interface Builder (and xcode3).
Now when I run my app I can't see the app window (but only the menu on top).
The MyDocument.xib file is correctly loaded (from xCode navigation sidebar) and I can see my user interface in interface builder.
In my code I haven't changed this method:
- (NSString *)windowNibName
{
// Override returning the nib file name of the document
// If you need to use a subclass of NSWindowController or if your document supports multiple NSWindowControllers, you should remove this method and override -makeWindowControllers instead.
return #"MyDocument";
}
What am I doing wrong ?
thanks
Check out the following methods in the NSApplicationDelegate documentation:
(BOOL)applicationShouldOpenUntitledFile:(NSApplication *)sender
(BOOL)applicationShouldHandleReopen:(NSApplication *)theApplication hasVisibleWindows:(BOOL)flag
Each window has an option (checkbox) called visible at start (or something like that; can't check ATM). Doublecheck if that's activated.
It was a bad configured ArrayController!
No error messages.. just the interface not showing up
What method must I implement in my cocoa application’s delegate so that on launch, it’ll open a url? (http/https, in this case) I’ve already implemented the url schemes, I just need to know how I can get my application to open on a url notification.
Update: I’m sorry, I wasn’t very clear. My application IS a browser that support https/http urls, but can only open them when it’s already running. What can I do to implement support for open urls in my app on launch?
When an application finishes launching on OS X, NSApp (the global NSApplication instance for the program) sends its delegate the applicationDidFinishLaunching: message (via the notification system). You can implement that method in your delegate to handle the notification and open a browser window in response, using NSWorkspace. Something like the following would work:
// Your NSApp delegate
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
[[NSWorkspace sharedWorkspace] openURL:[NSURL URLWithString:#"http://www.example.com/"]];
}
It's not a delegate method. You need to implement an Apple Event handler for the getURL event.
As luck would have it, this is exactly the case Apple uses to demonstrate implementing an Apple Event handler.
I already had implemented the getURL event, so that alone isn’t enough to get the application to open a url on launch. The trick is that the AppleEvent must be installed in applicationWillFinishLaunching: not applicationDidFinishLaunching:. Otherwise, the event isn’t sent at all because the app hasn’t registered it in time.
To implement a protocol handler that you can select (in Safari preferences, for example) as the "default browser" and which will launch in response to HTTP / HTTPS, you need to do a few things.
Add .scriptSuite and .scriptTerminology files to your project resources. These will tell Mac OS X that you'll be handling the GetURL command.
Add a CFBundleURLTypes key to your Info.plist file listing the "URL Schemes" that your app will handle.
Also in Info.plist, add the NSAppleScriptEnabled key with the value YES.
Add a new class to your application as a subclass of NSScriptCommand and implement the -(id)performDefaultImplementation selector. From within this function you will find the clicked URL in [self directParameter]. Pass this on to your app's URL handler!
For the full details check out the article:
http://www.xmldatabases.org/WK/blog/1154_Handling_URL_schemes_in_Cocoa.item