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POUiManagedDocument works fine in simulator, but UIDocumentStateSavingError on iPhone
 

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  1. POUiManagedDocument works fine in simulator, but UIDocumentStateSavingError on iPhone
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    <p>I use a uiManagedDocument singleton as suggested here: <a href="http://adevelopingstory.com/blog/2012/03/core-data-with-a-single-shared-uimanageddocument.html" rel="nofollow">http://adevelopingstory.com/blog/2012/03/core-data-with-a-single-shared-uimanageddocument.html</a></p> <p>the document is accessed by a fetchedResultsController and displayed in a tableViewController.</p> <pre><code>+ (DocumentHandler *)sharedDocumentHandler { static dispatch_once_t once; dispatch_once(&amp;once, ^{ _sharedInstance = [[self alloc] init]; }); return _sharedInstance; } - (id)init { self = [super init]; if (self) { NSURL *url = [[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject]; url = [url URLByAppendingPathComponent:@"ElphiDB"]; self.document = [[UIManagedDocument alloc] initWithFileURL:url]; [self.logger log:@"DocumentHandler Initializing document"]; // Set our document up for automatic migrations NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithBool:YES], NSMigratePersistentStoresAutomaticallyOption, [NSNumber numberWithBool:YES], NSInferMappingModelAutomaticallyOption, nil]; self.document.persistentStoreOptions = options; } return self; } - (void)performWithDocument:(OnDocumentReady)onDocumentReady { void (^OnDocumentDidLoad)(BOOL) = ^(BOOL success) { onDocumentReady(self.document); [self.logger log:[NSString stringWithFormat:@"performWithDocument success=%d",success]]; }; if (![[NSFileManager defaultManager] fileExistsAtPath:[self.document.fileURL path]]) { [self.document saveToURL:self.document.fileURL forSaveOperation:UIDocumentSaveForCreating completionHandler:OnDocumentDidLoad]; } else if (self.document.documentState == UIDocumentStateClosed) { [self.document openWithCompletionHandler:OnDocumentDidLoad]; NSLog(@"DocumentHandler performWithDocument Open:%@",[self.document description]); } else if (self.document.documentState == UIDocumentStateNormal) { OnDocumentDidLoad(YES); NSLog(@"DocumentHandler performWithDocument state normal"); } if (self.document.documentState != UIDocumentStateNormal) { [self.logger log:[NSString stringWithFormat: @"DocumentHandler problem-%@",[self.document description]]]; } </code></pre> <p>}</p> <p>//in tableViewController</p> <pre><code> - (void)viewWillAppear:(BOOL)animated{ [super viewWillAppear:animated]; RootNavigationController *rootNC=(RootNavigationController*)self.navigationController; if (!self.plugDocument) { [[DocumentHandler sharedDocumentHandler] performWithDocument:^(UIManagedDocument *document) { [self.logger log:[NSString stringWithFormat:@"PlugsTVC VWA - call documentHandler doc=%@",document]]; self.plugDocument=document; self.plugFetcher.document=document; [self setupFetchedResultsController]; [self fetchPlugDataIntoDocument:document]; }]; }else{ [self.logger log:[NSString stringWithFormat:@"PlugsTVC VWA doc=%@ does exist",self.plugDocument]]; [self fetchPlugDataIntoDocument:self.plugDocument]; } } </code></pre> <p>The app works fine on the 6.0 simulator but on the device, the table is blank and the document shows a problem, either UIDocumentStateSavingError or UIDocumentStateEditingDisabled. I have no idea what could cause this to run differently on the phone vs. the simulator</p>
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    1. COThat's it, a UIDocumentStateSavingError? Usually there's an explanation of why, what's wrong, or at the very least an error number. One thing I can think of is the location of the document. NSLog `self.document.fileURL`. This cannot be in the main bundle, as devices can't write to the main bundle. The simulator would give you no problems though.
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      1. POUiManagedDocument works fine in simulator, but UIDocumentStateSavingError on iPhone
      1. USScott Berrevoets
    2. COJust curious: which iOS version is the device running?
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    3. COAnother question: where do you call 'performWithDocument'? In viewWill appear? I am also working with this Singleton the last days (from that tutorial).
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