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POUIDocument closeWithCompletionHandler: completes immediately
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2013-07-18T17:50:43.610
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2013-07-20T19:40:12.780
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2013-07-20T19:40:12.780
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Documentation of <code>closeWithCompletionHandler"</code> says: "After the save operation concludes, the code in completionHandler is executed." However, in my app this code: <pre><code>NSLog(@"closeWithCompletionHandler"); [self.document closeWithCompletionHandler:^(BOOL success) { if (success) { NSLog(@"completionHandler"); ... </code></pre> executes immediately (on iOS6.1): <pre><code>2013-07-18 19:43:12.673 FooBar[819:907] closeWithCompletionHandler 2013-07-18 19:43:12.675 FooBar[819:907] completionHandler <-- look here 2013-07-18 19:43:16.234 FooBar[819:907] encoded </code></pre> even though actual writing data to a file takes several seconds (I know that by tracking <code>contentsForType:error:</code>). <code>contentsForType:error:</code> implementation looks like this: <pre><code>- (id)contentsForType:(NSString *)typeName error:(NSError *__autoreleasing *)outError { NSMutableDictionary* wrappers = [NSMutableDictionary dictionary]; [self encodeObject:self.data toWrappers:wrappers preferredFilename:kDocumentDataPath]; NSFileWrapper* fileWrapper = [[NSFileWrapper alloc] initDirectoryWithFileWrappers:wrappers]; NSLog("encoded"); return fileWrapper; } </code></pre> Please note encoding finishing long after completionHandler executes: <pre><code>2013-07-18 19:43:12.675 FooBar[819:907] completionHandler 2013-07-18 19:43:16.234 FooBar[819:907] encoded <-- look here </code></pre> Why is this so? How should I make sure that data is written out to file before proceeding?
Tags
<ios><objective-c><ios6><uidocument>
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UIDocument closeWithCompletionHandler: completes immediately
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