Accounts framework - does unexpected things sometimes / freezes system preferences ...
Hi all, we do use accounts framework on Mac OS X for Facebook and we did find two issues (+- 15 % of cases) … 1. ACAccountStore returns non sense sometimes Here's the code to check account store status, request access, etc. https://gist.github.com/robertvojta/ecc7a790664b3c432f63 This code does work on almost all testing Mac computers. But sometimes, this does happen: - account store tell me that we do not have access (granted is 0), it's okay, - there is Facebook account in system accounts, - I'm going to request access via requestAccessToAccountsWithType:options:completion: - and the result in completion handler is - granted 0, error is set, error code is 6 (= ACErrorAccountNotFound) with description Operation couldn't be completed - this is problem [FBUFacebookAccount readPermissions] used as ACFacebookPermissionsKey value is simple array with read only permissions. We do need write permissions as well, but we're asking for them later. Permissions are okay. What's weird - system dialog that we want to access Facebook account never appears in this case. And our app is not listed in Security Privacy - Privacy - Facebook pane. Nothing helps - restart, add/remove Facebook account in System Preferences, etc. The only way which fixes this state is to call … tccutil reset Facebook … and when I do this, it works as expected. Drawback is that I can't call this because it resets granted access for all apps - it simply removes all of them. And also we're targetting MAS Sandbox - no way to call it - and we do not want to call it at all to avoid resetting other apps which do use Facebook. Just pointing it out as a solution for this issue. When I call tccutil, it fixes all issues and app, ie. ACAccountStore, does work as expected. An idea what can be wrong? This problem did appear on 3 testing Macs (20 testing Macs in total). It's 15 % of Macs and it's huge number of users. It's not acceptable. All systems are up to date Mountain Lions (we're targetting 10.8 only). 2. System Preferences freezing Sometimes, less frequent than mentioned 15 %, when I do receive ACAccountStoreDidChangeNotification, I'm … - trashing currect ACAccountStore object, - allocating new one, - and checking accounts in the same way as I described, … if I do this immediately when I do receive this notification, System Preferences … freezes sometimes and my app freezes as well. When I reallocated / recheck account store few seconds, let's say 5s, after I do receive notification, everything's okay. It seems that there's some kind of problem in Accounts framework, which can causes this freeze - kind of deadlock or don't know what it can be. This is on my todo list to sample both apps and check what's going on here. Thanks for any insights, Robert ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: UIWebView IBOutlet is always nil
I've seen this before, but only in the case where there was no @synthesize; did your actual code use it? Yes. My best guess is that it's some corruption in the nib. I'll make a standalone App with nothing but a UIWebView in it. Maybe if that works I could just copy the xib over to my production project. Or maybe it's a bug in the simulator. I don't have a device to test on right now, as my iPhone was stolen. I'm planning on getting an iPod Touch, but not for a little while. If I can't get it working I'll file a Radar. Thanks for your help. Mike Crawford mdcrawf...@gmail.com On Fri, May 10, 2013 at 5:34 AM, Fritz Anderson fri...@manoverboard.orgwrote: On 5 May 2013, at 6:47 PM, Michael Crawford mdcrawf...@gmail.com wrote: @property (retain,nonatomic) IBOutlet UIWebView *webView; ... @synthesize webView; ... NSLog( @%@, webView ); I've seen this before, but only in the case where there was no @synthesize; did your actual code use it? In recent compilers, if the getter and setter for a property are generated without @synthesize, the backing variable would be named _webView. When I ran into the bug, the coder had defined a global of the same name, which masked the error from the compiler. But my experiment shows that if you use @synthesize, the backing ivar is named without the underscore. If your production code is as you show, I'm not helping you here. — F -- Fritz Anderson Xcode 4 Unleashed: 4.5 supplement for free! http://www.informit.com/store/xcode-4-unleashed-9780672333279 -- Michael David Crawford mdcrawford at gmail dot com Custom Software Development for the iPhone and Mac OS X http://www.dulcineatech.com/custom-software-development/ ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: UIWebView IBOutlet is always nil
Sorry, I missed the beginning of this thread, so apologies if these suggestions have already been covered. When in that case, I make sure to delete the UIWebView in the storyboard, create another one and reconnect the outlet to the property in the class. Did you create the IBOutlet property in the header file or the method file? If the little circle next to the property is always empty, it's not being regarded as being properly hooked up. Try mousing over the little circle and see if it shows the storyboard it's connected to. If you want, send me some screenshots and I'll try to help diagnose the patient. Cheers. On May 12, 2013, at 11:35 AM, Michael Crawford wrote: I've seen this before, but only in the case where there was no @synthesize; did your actual code use it? Yes. My best guess is that it's some corruption in the nib. I'll make a standalone App with nothing but a UIWebView in it. Maybe if that works I could just copy the xib over to my production project. Or maybe it's a bug in the simulator. I don't have a device to test on right now, as my iPhone was stolen. I'm planning on getting an iPod Touch, but not for a little while. If I can't get it working I'll file a Radar. Thanks for your help. Mike Crawford mdcrawf...@gmail.com On Fri, May 10, 2013 at 5:34 AM, Fritz Anderson fri...@manoverboard.orgwrote: On 5 May 2013, at 6:47 PM, Michael Crawford mdcrawf...@gmail.com wrote: @property (retain,nonatomic) IBOutlet UIWebView *webView; ... @synthesize webView; ... NSLog( @%@, webView ); I've seen this before, but only in the case where there was no @synthesize; did your actual code use it? In recent compilers, if the getter and setter for a property are generated without @synthesize, the backing variable would be named _webView. When I ran into the bug, the coder had defined a global of the same name, which masked the error from the compiler. But my experiment shows that if you use @synthesize, the backing ivar is named without the underscore. If your production code is as you show, I'm not helping you here. — F -- Fritz Anderson Xcode 4 Unleashed: 4.5 supplement for free! http://www.informit.com/store/xcode-4-unleashed-9780672333279 -- Michael David Crawford mdcrawford at gmail dot com Custom Software Development for the iPhone and Mac OS X http://www.dulcineatech.com/custom-software-development/ ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/zav%40mac.com This email sent to z...@mac.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Validate core data sqlite file
Hi I am building an core data app that allows me to backup and restore the data. For backup, I simply copy the sqlite file to selected directory with a name 'app.backup'. For restore, I also simply copy the selected file to the application storage directory with name 'app.sqlite' My question is: when I do restoring, How do I validate that the file is a valid sqlite database and its schema matches the core data data model I am using? Thanks, - Peng ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Parental Controls - [Was: NSTask Explodes. Clueless.]
Update: I *finally* got a bead on this.
The user running my main application has parental controls enabled. The user is
allowed to run the main application, and can, but the helper task that is
bundled inside the main application's bundle is not allowed to run. When the
*task* launches, *it* crashes, but since it happens *while* fork/exec'ing, the
crash *appears* to be main application crashing, but it's not.
When the task launches, the user is shown a dialog by the OS: You don't have
permission to use the application mytask. There are options to Always allow,
allow once, and just ignore and move on. Allowing once, and even Always allow
always results in the same message, and the task crashing. The permissions do
not stick at all, probably because it's bundled inside the main .app package's
Resource folder?
Any ideas what to do?
--
Seth Willits
On Feb 4, 2013, at 11:26 AM, Seth Willits wrote:
In my app I have to launch background processes (bundled within my app's
Resources folder) to do some things, and I launch them with NSTask. Every now
and then I get a crash report which shows NSTask throws some fatal exception
which is not caught by a wrapping @try block.
For example:
@try {
NSString * taskPath = [[[NSBundle mainBundle] resourcePath]
stringByAppendingPathComponent:@mytask];
task = [[NSTask alloc] init];
task.launchPath = taskPath;
task.arguments = @[aUUIDString];
[task launch];
}
@catch (NSException * e) {
...
}
And it crashes:
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0002, 0x
*** NSTask: Task create for path
'/Applications/App.app/Contents/Resources/mytask' failed: 22, Invalid
argument. Terminating temporary process.
*** multi-threaded process forked ***
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 com.apple.Foundation 0x978142d8
___NEW_PROCESS_COULD_NOT_BE_EXECD___ + 7
1 com.apple.Foundation 0x976d2e16 -[NSConcreteTask
launchWithDictionary:] + 4698
2 com.apple.Foundation 0x9777 -[NSConcreteTask launch] + 40
--
Seth Willits
___
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Re: Parental Controls - [Was: NSTask Explodes. Clueless.]
On May 12, 2013, at 8:08 PM, Seth Willits wrote: The user running my main application has parental controls enabled. The user is allowed to run the main application, and can, but the helper task that is bundled inside the main application's bundle is not allowed to run. When the *task* launches, *it* crashes, but since it happens *while* fork/exec'ing, the crash *appears* to be main application crashing, but it's not. When the task launches, the user is shown a dialog by the OS: You don't have permission to use the application mytask. There are options to Always allow, allow once, and just ignore and move on. Allowing once, and even Always allow always results in the same message, and the task crashing. The permissions do not stick at all, probably because it's bundled inside the main .app package's Resource folder? Any ideas what to do? Is your helper task separately code-signed? It should be. Regards, Ken ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Parental Controls - [Was: NSTask Explodes. Clueless.]
On May 12, 2013, at 6:47 PM, Ken Thomases wrote: On May 12, 2013, at 8:08 PM, Seth Willits wrote: The user running my main application has parental controls enabled. The user is allowed to run the main application, and can, but the helper task that is bundled inside the main application's bundle is not allowed to run. When the *task* launches, *it* crashes, but since it happens *while* fork/exec'ing, the crash *appears* to be main application crashing, but it's not. When the task launches, the user is shown a dialog by the OS: You don't have permission to use the application mytask. There are options to Always allow, allow once, and just ignore and move on. Allowing once, and even Always allow always results in the same message, and the task crashing. The permissions do not stick at all, probably because it's bundled inside the main .app package's Resource folder? Any ideas what to do? Is your helper task separately code-signed? It should be. Yep. Always, and with the same identity as the main app. -- Seth Willits ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
