Databases
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    <p>Check the below code with the necessary changes &amp; answers of your comments.</p> <pre><code>- (void) multitaskingResumeCheck { NSLog(@"Running multitaskingResumeCheck"); // Get the path to the "Documents" directory NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; // Get the path to our plist ("Documents/foo.plist") NSString *plistPath = [documentsDirectory stringByAppendingPathComponent:@"lastStopwatchState.plist"]; // check if our plist already exists in the Documents directory NSMutableDictionary *dict = nil; // Assign the initial value as nil if you're going to assign the actual value later in a conditional block. NSFileManager *fileManager = [NSFileManager defaultManager]; if ([fileManager fileExistsAtPath:plistPath]) { // If it does, read it. NSLog(@"dict existed, reading %@", plistPath); dict = [NSMutableDictionary dictionaryWithContentsOfFile:plistPath]; // It's not required to retain as it's being assigned using a class method which in-turn returns an auto-release object. } if (dict) { // Put a conditional check here whether dict is nil or not. // Now check whether the timers were zeroed on exit NSNumber *wrappedATZ = [dict valueForKey:@"allTimersZeroed"]; // No error should come here. BOOL timersWereZeroed = [wrappedATZ boolValue]; // If they were not Zeroed, then we'll load in our data if (!timersWereZeroed) { NSLog(@"Timers were not zeroed. Loading Data."); [self loadResumeData:dict]; } // Dump the contents of the dictionary to the console NSLog(@"dumping..."); for (id key in dict) { NSLog(@"key=%@, value=%@", key, [dict objectForKey:key]); } //[dict release]; No need to release an auto-release object. /** You were executing the below code after releasing the dict object. It might give garbage values which crashes the app. **/ // Dump the contents of the dictionary to the console NSLog(@"dumping..."); for (id key in dict) { NSLog(@"key=%@, value=%@", key, [dict objectForKey:key]); } } } </code></pre>
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    1. PORetaining a locally-created NSMutableDictionary -- Necessary or not?
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    1. USSagar
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    1. COThanks Sagar. As with the others, very helpful comments. I like that conditional check. It makes the code cleaner.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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