Hi,
I have a text field that when I try to set it to a literal string fails:
This is the code:
self.myTextField.stringValue = @""; (It also fails if the literal string is not
empty).
This is the (partial) backtrace:
2012-05-08 18:09:28.516 MyApp[18775:507] *** Assertion failure in
-[NSTextFieldCell _objectValue:forString:errorDescription:],
/SourceCache/AppKit/AppKit-1138.32/AppKit.subproj/NSCell.m:1564
Catchpoint 7 (exception thrown).2012-05-08 18:09:31.742 MyApp[18775:507]
Invalid parameter not satisfying: aString != nil
2012-05-08 18:09:31.845 MyApp[18775:507] (
0 CoreFoundation 0x00007fff90d12fc6
__exceptionPreprocess + 198
1 libobjc.A.dylib 0x00007fff8c3f4d5e
objc_exception_throw + 43
2 CoreFoundation 0x00007fff90d12dfa
+[NSException raise:format:arguments:] + 106
3 Foundation 0x00007fff92db1743
-[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:]
+ 169
4 AppKit 0x00007fff8a9495a5 -[NSCell
_objectValue:forString:errorDescription:] + 160
5 AppKit 0x00007fff8a9494ff -[NSCell
_objectValue:forString:] + 19
6 AppKit 0x00007fff8a949465 -[NSCell
setStringValue:] + 41
7 AppKit 0x00007fff8aa4a5e8 -[NSControl
setStringValue:] + 115
However, when I set it like this…
self.myTextField.stringValue = [NSString string];
…it has no issues.
Can anyone explain to me why the former doesn't work? I have many instances of
setting a textfield with an empty literal string elsewhere in my code, and it
doesn't cause problems. This particular textfield lives in a toolbar, but I
assume that shouldn't matter.
-Ant´ønio
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It is better to light a candle than to curse the darkness
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