I am very new to the Mac platform and Objective-C in general and in my application I would like to know how to determine that a user is logging out and perform some actions prior to this. Any info or pointers for this?
The official way to put the hook at logging in / logging out is described in these Apple documents Customizing Login and Logout and Tech Note 2228. But I'm afraid that the log-out hook was no longer directly supported.
So, the second best way is to run a headless Cocoa app, and receive a notification from the system using NSWorkspace, see the document and the list of available notifications.
To make a headless Cocoa app, you need to set an entry in its Info.plist called LSUIElement, see here. By setting LSUIElement to be yes, the app don't appear in the dock, but perform various operation in the background.
Take a look at Receiving Workspace Notifications in this Workspace Services document.
NSWorkspaceWillPowerOffNotification
Posted when the user has requested a
logout or that the machine be powered
off.
Related
I need to implement push notification to our Android App using Xamarin. Here is the process. We have web version which used by the Manager. The Manager creates and assign job to the driver. The App version is used by the Driver where it shows the list of jobs and processes of job until its complete. So, when the Manager assigned the Job to the Driver in the Web version, it will then notified to the Driver in the App version that "new job is assigned". Basically, both the web and app uses same database then we created an api(REST API in MVC C#) to connect and get data from the db to be used in the mobile app.
Can someone recommend to me which Push notification plugin(a plugin or nuget) should I use to do this? Currently, I have set up Push Notifications through App center & Firebase but not sure how this work.
Thank you.
I need to implement push notification to our Android App using Xamarin.
I would suggest you use Firebase for mobile push notifications for Android as it is a product by Google, and was made for mobile applications. For push notifications, you will be using Firebase Cloud Messaging also known as FCM. See to it that you are well versed on how it works before you start coding anything read the documents it answers most of your questions there itself.
The Manager creates and assign job to the driver. The App version is used by the Driver where it shows the list of jobs and processes of a job until its complete. So, when the Manager assigned the Job to the Driver in the Web version, it will then notified to the Driver in the App version that "new job is assigned". Basically, both the web and app use the same database then we created an API(REST API in MVC C#) to connect and get data from the DB to be used in the mobile app.
For this, you will have to check on how to work with Firebase using Rest-API. Once you configure the Rest-API and then apply your business logic to it things will be quite easier than you might have imagined.
Can someone recommend to me which Push notification plugin(a plugin or NuGet) should I use to do this?
My recommendation is quite simple, Do not use any sort of a firebase push notifications plugin!. I have had a very bad past with plugins and ever since then I never recommend fellow developers to use plugins until it is a well-maintained one. I would rather ask you to simply configure Firebase on the basis of the guides that are available online. Like the following Xamarin.Android guide for FCM. It is detailed contains everything that you are looking for and what else I would suggest is you check firebase related answers on SO and you will find that almost everything that is not available in docs is covered around here and in detail. Like the following:
How to handle Firebase Notification i.e. Notification Messages and Data Messages
Push Notification in android with firebase get token
How to send device to device messages using Firebase Cloud Messaging?
Receive push notifications on one android app from two Firebase projects
I've tried to following the instructions
Configuring push services for Android devices
However, the steps mention 'Click Push Notifications on the left-side navigation' but they don't exist...
Once you've created a Google API project with GCM enabled, you need to update your application's settings page in Dashboard with the API key and sender ID you generated.
To configure Arrow for push notifications using Dashboard:
Open Dashboard and select your application from the Apps drop-down menu.
Click Push Notifications on the left-side navigation <-- MISSING.
Select the Android Push tab.
Enter the server key in the GCM API Key field and the GCM sender ID in the GCM Sender ID field.
Here's a screenshot to show what's listed...
If I look under Arrow (where I suspect it might be expecting to be listed) that's empty (I'm not using Arrow - I thought it was an alternative UI using declarative XML)...
I've checked the subscription that I'm on (Indie) and it shows that I should have the ability to send up to 1 million push notifications for free..
Does anyone know how I can associate the Appcelerator Titanium project to the GCM server key??
Also, when I looked in Googles developer console, my application (which is live on their app store) wasn't listed, so I've created a new application called 'Gcm'. The Appcelerator Titanium seemed to confirm that I needed to 'create' the application, I was just too worried to call it the same name as the live application. How does the 'Google Developer Console' Application relate to the 'Google Play' application?! - if at all?
UPDATE
I've just discovered in TiApp.xml that I can enable some 'Cloud' settings and this has unlocked the 'Push' menu - so I think all is good now, could someone confirm that this is the right thing to do and answer my related question about Google play applications v google developer console applications?
Update 2
I started to get this error
[ERROR] : GooglePlayServicesUtil: The Google Play services resources
were not found. Check your project configuration to ensure that the
resources are included.
[INFO] : CloudPush.retrieveDeviceToken error: INVALID_SENDER
I'm simply calling this to try and register for Android push notifications ...
CloudPush.retrieveDeviceToken({
success : function(e) {
console.info("CloudPush.retrieveDeviceToken success");
},
error : function(e) {
console.info("CloudPush.retrieveDeviceToken error:"+e.error);
}
});
I have tried with and without the ti.cloud module (I think it got added when I clicked the 'Enable Services' button which meant that I could see the 'Push Notifications' tab, but it seems to still be listed whether the ti.cloud module is elected or not)..
Before..
Q - How to stop the Google Play error and retrieve the device token (oddly I was getting the token before enable services.
Q - Is ti.cloud used to receive the push notification, or is ti.cloudpush sufficient for this?
Thanks for the detailed question :) Let me go into some of the things you mention and clarify what I can.
If I look under Arrow (where I suspect it might be expecting to be listed) that's empty
As you later found out you have to enable platform services for your app which will create an ArrowDB app with the same name as your app. This app will have the Push Notifications in the sidebar to configure. I've updated the guide's wordings to make clear we mean the ArrowDB app, not the Titanium app.
(I'm not using Arrow - I thought it was an alternative UI using declarative XML)...
Don't confuse Arrow with Alloy - which is the MVC framework for Titanium which indeed uses XML.
How does the 'Google Developer Console' Application relate to the 'Google Play' application?! - if at all?
It doesn't. You can even have multiple apps share the same GCM sender.
[ERROR] : GooglePlayServicesUtil: The Google Play services resources were not found.
What did you use to test? A Genymotion emulator without Google Apps installed perhaps? You'll need that.
Is ti.cloud used to receive the push notification, or is ti.cloudpush sufficient for this?
ti.cloud is the module to communicate with ArrowDB, subscribe to channels etcetera. On Android you need ti.cloudpush (or as #Shawn mentioned another module) to retrieve the device token where on iOS you can use a Ti. API for that. Follow this guide for all steps.
You can ignore the Google Play Service error, but it seems your GCM Sender ID and/or API Key is wrong. Read through the tutorial and make sure you put down the right ones.
If you are using Appcelerator Cloud Service to send push notifications, you need ti.cloud to register the devices.
To get the device token and to receive push notifications, you use ti.cloudpush. There are other modules that you can use instead of ti.cloudpush.
I have read through many questions here about launching my app on login. I have followed this awesome tutorial suggested many times. That tutorial does work. BUT...
The one side affect that comes from using a helper app and registering it using SMLoginItemSetEnabled is that my app does not show up inside the user's Login Items in System Preferences.
There are several apps in the App Store (such as PopClip and Dash) that do what I am trying to do. I just can't figure out how...
UPDATE: I found out from the Dash developer that Dash is actually not sandboxed. He also believes that PopClip is not either. This could explain things... https://alpha.app.net/kapeli/post/3975968
UPDATE #2: I just got confirmation from the PopClip dev that it indeed is not sandboxed as well. https://twitter.com/pilotmoon/status/313746294361427968
With the last 2 updates, I guess the answer is clear. As of today, there is no way to accomplish this with Sandboxed apps.
Hope it's not too late.
In Apple's "Daemons and Services Programming Guide":
Adding Login Items
There are two ways to add a login item: using the Service Management framework, and using a shared file list.
Login items installed using the Service Management framework are not visible in System Preferences and can only be removed by the application that installed them.
Login items installed using a shared file list are visible in System Preferences; users have direct control over them. If you use this API, your login item can be disabled by the user, so any other application that communicates with it it should have reasonable fallback behavior in case the login item is disabled.
In sandboxed environment, only Helper applications can be installed in login items. You need to create one, stored in the Contents/Library/LoginItems folder of the main application.
Then you can used SMLoginItemSetEnabled to set the helper as login item and ask the login item to start the main application.
I've recently implemented FB Javascript SDK for a mobile web app and am playing with their event subscription code:
FB.Event.subscribe('auth.statusChange', handleStatusChange);
I notice that handleStatusChange is called when I log in into facebook through my app. However, if I open another browser tab, go to facebook.com and log out the function isn't called.
I was expecting it to be called. Am I wrong? I thought the point of this function was to monitor changes that were not necessarily within the purview of my app.
Thanks!
auth.authResponseChange - fired when the authResponse changes
https://developers.facebook.com/docs/reference/javascript/FB.getAuthResponse/
This would be when a users add or removes a permission, in our flows we are supposed to provide away for a users to remove each permission and authResponse allows us to monitor.
I want to place a button or a link in my app with which the user can start the app-store and buy my app if the app is in trial mode.
I can not find any relavant Information on this. How can I implement this?
MSDN documentation: Creating links with the Windows Store protocol. Alternatively, the URI for the app in the store can be accessed using the Windows.ApplicationModel.Store.CurrentApp.LinkUri property.
You can then open a link to your app in the store using Windows.System.Launcher.LaunchUriAsync.