What would cause objectForKey: to return null with a valid string in place?
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Published on 2010-04-18T04:15:43Z
Indexed on
2010/04/18
4:23 UTC
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cocoa
I am having an issue with NSDictionary returning null for an NSString even though the string in in the dictionary. Here is the code:
- (void)sourceDidChange:(NSNotification *)aNote {
NSDictionary *aDict = [aNote userInfo];
DLog(@"%@", aDict);
NSString *newSourceString = [aDict objectForKey:@"newSource"];
DLog(@"%@", newSourceString);
newSourceString = [newSourceString stringByReplacingOccurrencesOfString:@" " withString:@""];
DLog(@"%@", newSourceString);
NSString *inspectorString = [newSourceString stringByAppendingString:@"InspectorController"];
DLog(@"%@", inspectorString);
newSourceString = [newSourceString stringByAppendingString:@"ViewController"];
DLog(@"%@", newSourceString); }
And I get the following log statements:
2010-04-17 23:50:13.913 CoreDataUISandbox[13417:a0f] -[RightViewController sourceDidChange:] newSource = "Second View";
2010-04-17 23:50:13.914 CoreDataUISandbox[13417:a0f] -[RightViewController sourceDidChange:] (null)
2010-04-17 23:50:13.916 CoreDataUISandbox[13417:a0f] -[RightViewController sourceDidChange:] (null)
2010-04-17 23:50:13.917 CoreDataUISandbox[13417:a0f] -[RightViewController sourceDidChange:] (null)
2010-04-17 23:50:13.917 CoreDataUISandbox[13417:a0f] -[RightViewController sourceDidChange:] (null)
As you can see the string is in the dictionary under the key newSource, yet when I call objectForKey: I get null. I have even tried the fallback option of cleaning the project. Has anyone ever run into this, or have I just forgotten something really basic?
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