I know there are functions in the AppDelegate like applicationDidFinishLaunching, but I haven't found a way to know when the app has been reopened after closing it (without quitting it) using the X button.
I'm trying to know which function (if any) is going to help me with that.
I'm trying to corroborate which one works by printing something, for example:
In applicationDidFinishLaunching I use print("App Launched").
In applicationShouldTerminateAfterLastWindowClosed I use print("Last Window Closed")
So I need one that theoretically prints App Reopened.
I've tried so many, including:
awakeFromNib
applicationDidBecomeActive
applicationDidUnhide
But none of them have work for me.
Thanks in advance.
I think the callback you're looking for is NSApplicaitonDelegate.applicationShouldHandleReopen(_:hasVisibleWindows:)
These events are sent whenever the Finder reactivates an already running application because someone double-clicked it again or used the dock to activate it.
I am building an app for Mac which logs into a website based on login and password collected from textfield and secure text field, then app opens an url which is created in my app based on date range selection with use of two date picker cell calendars. Next app displays html data in webWiev (using WKWebView), converts html to string using extension NSAttributedString and then saves retrieved data as txt file. Everything works as expected as long as app is run from Xcode "play" button. Problem is if I archive this app and launch it, it will bring up an empty window without any button, calendar or textfield. There are no errors, no crash logs on organizer, nothing.
I decided to perform a little test. I build another view controller with only one button which upon clicking will show my app main view controller. After archiving this modified app and running it outside of Xcode a window shows view controller with one button which is correct. But after clicking it nothing happens. App works great if running "inside" Xcode, a pushbutton shows main ViewController correctly. Do You have any clue what can be wrong? thank You!
Edit 1. So I found a discussion on apple which mention this problem. It is associated with IB WKWebView and problem is already known since some time. Now I have to get around the problem. Apple forum link: https://forums.developer.apple.com/thread/116047
Did you embed WebKit.framework to your app?
After comment that I wrote, I founded a solution and solved with this method.
Please check it out.
I am developing an app for Mac, I am getting a weird issue. When ever i reload a row and for a particular column when the reload code executes i am getting a sound output from my mac.
Below is the code
myTableView.reloadDataForRowIndexes(myTableView.selectedRowIndexes, columnIndexes: NSIndexSet.init(index: myTableView.columnWithIdentifier("source")))
I have a column with identifier "source", When ever i try to reload and after the execution of the above line i am getting sound in my mac.
I am using Xcode 7.3, OSX 10.11.6
Have you tried setting a breakpoint on NSBeep()? My gues would be that the table, or some other code trigger by the update is sending an error message.
Finally i found the issue. I debugged the code in depth and found the root cause.
Sound is coming when ever i am calling below code, here sourceTextField is a NSTextField. I commented this code and every thing is working fine.(i can directly give the value to text field like sourceTextField.stringValue.)
sourceTextField.insertText(itemText)
Thanks to all of you who made some time to write a comment/ post a message, Sorry for bothering you all guys.
I recently updated to Xcode 7 and upgraded my iPhone to iOS 9. I have developed and released an iOS app that had worked perfectly fine on the latest version of iOS 8 and Xcode 6.
Upon trying to go through the process of updated the app for iOS 9 support, I am getting the most ridiculously strange error that has left me baffled.
I have done all the syntax corrections automatically through Xcode, and now my app builds properly. It even runs fine at first.
I have a button that segues to a view controller with a WebView. This view controller loads a link that will display either an image, website, or video from youtube. The content is loaded perfectly fine as always. However, the program will crash and reboot the simulator (and my iPhone) and send me to the lock screen when I click the Back button (I am on a navigation stack).
In Xcode, I get the following messages:
XPC Connection Interrupted.
Terminating since there is no system app.
I have Flurry analytics integrated in my app by the way, not sure if thats an issue.
How can I fix this issue? My searches for XPC connections do not seem to return problems similar to mine. I do not even have a clue what an XPC connection is, so why is this in my app anyway?
EDIT: I have found a workaround for the issue. I cannot really say it is a fix.
The crashing was occurring during the use of the method self.navigationController?.popViewControllerAnimated, when set to true. I happened to set this to false, and the crashing stops (now the transition looks awful).
I do not know why this works, and just adds to my confusion.
The problem lied in the storyboard for me as well. I created a new project and laid out the views and everything seemed to be working fine. I found these couple lines in the storyboard source (right click on storyboard and select view as -> source code) which weren't common between the working version and the broken version:
<keyCommands>
<keyCommand/>
</keyCommands>
I have no idea what those lines are supposed to do, or how they crept into my storyboard file, but they were what was crashing the app so hard that the phone had to restart. I removed those lines from my main project and everything worked again.
This error can be caused by executing a loop repeatedly. In my case it was a 'for' loop in which I reset the counting variable. As soon as I added an NSLog in the loop it was obvious.
I just faced the same problem. I don't know if that will help you, but I also think it's coming from the Storyboard:
In my case, the problem is coming from a UITextView. Whenever I try to change the default text inside it, I have this error. If I let the default text or leave it empty, the app works fine. Making an IBOutlet and changing the text programmatically works as well.
I tried with other UI elements, but only the UITextView seems to have this issue.
I have struggled with exact same error. Through a process of elimination I established that it had nothing to do with the any class but had to do with the storyboard. Luckily I keep regular backup copies and I tried to compare storyboards to establish what I had done - but could find nothing obvious.
The backup copy worked fine and I was able to copy my controller classes (from the faulty copy with the changes) into the backup copy and they worked fine.
I think there is a bug possibly in storyboards.
I have same error message when I place a subview in -layoutSubviews method:
-(void)layoutSubviews
{
[super layoutSubviews];
[self populateByImageViews];
}
It causes infinite cycle of layout process and crashes app. Don't place subviews in this place!
Deleting UITextView from the one of the view in Storybord removes the error in my case.
In valueChanged: method of a UIControl, I had the same problem
so I made the code inside valueChanged: to run in main thread and it solved the problem.
#IBAction func valueChanged(sender: AnyObject) {
dispatch_async(dispatch_get_main_queue(), {
//code
}
}
For me was some missing constraints with a UISearchBar, but the error was only in the simulator.
I only add some constraints and works better
For me it was xcode live issues caused by IB_DESIGNABLE
If you have any IB_DESIGNABLE in source files, the system's live tracker will check for issues in StoryBoard too. It may leads to unnecessary building.
To disable it-
Open Storyboard file. Editor -> Automatically Refresh Views (Uncheck)
If you needs to Disable Live issue tracking
XCode -> Preferences -> General -> Issues -> Uncheck Live Issues
Reference
My issue probably originated with some storyboard issue, but I cleaned the project, restarted Xcode AND restarted the simulator app and that fixed it.
When using QLPreviewController, I am confronted with this problem. Error messages as follows,
XPC connection interrupted
_BSMachError: (os/kern) invalid capability (20)
_BSMachError: (os/kern) invalid name (15)
Since XPC means OS X interprocess communication, so I think this can solve the problem, especial when updating the UI
dispatch_async(dispatch_get_main_queue(), ^{
// do what you want to do.
});
For Swift 4+, user
DispatchQueue.main.async {
//Your Code
}
I'm using the SA_OAuthTwitterEngine to integrate Twitter into on of my iPhone apps. Loggin in and sending tweets are working fine. But, when I completely terminate my app so it will start up from the beginning, I can't login again using the SA_OAuthTwitterController because the keyboard will not show up. The input field also doesn't respond to the Mac keyboard when using the simulator.
I've searched for similar problems, but they don't help me out. I've found a lot of similar problems, where calling makeKeyAndVisible for the app delegate window solved it. This doesn't work for me. If I set the modalview's alpha to .2, I also don't see the keyboard behind the view controller.
Weirdest thing is that everything works after a fresh reinstall for as many times as I want, but after I've terminated the app, the keyboard doesn't show op anymore.
Can anyone point me in the right direction?
Thanks in advance!