Hi All,
I want to set NSSegmentStyleSeparated on my NSSegmentedControl
(managed by autolayout). However, when I create constraints for the
parent view, I get an exception:
Assertion failure in -[NSSegmentedControl ns_widgetType],
/SourceCache/AppKit/AppKit-1348.17/Layout.subproj/NSUserInterfaceTheme.m:398
An uncaught exception was raised
What kind of segmented control are we!
Example code:
(in WindowController)
- (void)windowDidLoad {
[super windowDidLoad];
NSSegmentedControl* segmentedControl = [[NSSegmentedControl alloc] init];
[segmentedControl setSegmentCount:2];
[segmentedControl setTranslatesAutoresizingMaskIntoConstraints:NO];
segmentedControl.segmentStyle = NSSegmentStyleSeparated;
[self.window.contentView addSubview:segmentedControl];
NSString* constraint = @"|-[segmentedControl]-|";
NSDictionary* views = NSDictionaryOfVariableBindings(segmentedControl);
NSArray* constraints = [NSLayoutConstraint
constraintsWithVisualFormat:constraint
options:NSLayoutFormatDirectionLeadingToTrailing
metrics:nil
views:views];
[self.window.contentView addConstraints:constraints];
}
The exception is raised in "addConstraints:".
Everything is fine if I do not change segmentStyle. It also works fine
if I change segment style *after* adding constraints, but then I get
the exception e.g. when dragging window to external display.
Any ideas?
Thanks for any help.
Jacek
And a stack trace:
TestSegmented[24775:165858] *** Assertion failure in
-[NSSegmentedControl ns_widgetType],
/SourceCache/AppKit/AppKit-1348.17/Layout.subproj/NSUserInterfaceTheme.m:398
TestSegmented[24775:165858] An uncaught exception was raised
TestSegmented[24775:165858] What kind of segmented control are we!
TestSegmented[24775:165858] (
0 CoreFoundation 0x00007fff8bb8103c
__exceptionPreprocess + 172
1 libobjc.A.dylib 0x00007fff89fec76e
objc_exception_throw + 43
2 CoreFoundation 0x00007fff8bb80e1a
+[NSException raise:format:arguments:] + 106
3 Foundation 0x00007fff9700d99b
-[NSAssertionHandler
handleFailureInMethod:object:file:lineNumber:description:] + 195
4 AppKit 0x00007fff9377be8c
-[NSSegmentedControl(NSIBSegmentedControlIntegration) ns_widgetType] +
198
5 AppKit 0x00007fff935fabca
-[NSAquaUserInterfaceTheme _ruleForView:comparedToContainer:withEdge:]
+ 40
6 AppKit 0x00007fff935f97bf
-[NSAquaUserInterfaceTheme
resolvedValue:forSymbolicConstant:inConstraint:containerView:] + 527
7 AppKit 0x00007fff935f944b
-[NSLayoutConstraint(NSSymbolicConstantResolution)
defaultResolvedValue:forSymbolicConstant:error:] + 77
8 Foundation 0x00007fff96faf969
-[NSLayoutConstraint _effectiveConstant:error:] + 105
9 Foundation 0x00007fff96faf867
-[NSLayoutConstraint constant] + 52
10 Foundation 0x00007fff96faea45
-[NSLayoutConstraint _lowerIntoExpression:reportingConstantIsRounded:]
+ 197
11 Foundation 0x00007fff96fa2df6
-[NSLayoutConstraint
_addToEngine:integralizationAdjustment:mutuallyExclusiveConstraints:]
+ 95
12 AppKit 0x00007fff935be49c
-[NSView(NSConstraintBasedLayout)
_layoutEngine_didAddLayoutConstraint:integralizationAdjustment:mutuallyExclusiveConstraints:]
+ 89
13 AppKit 0x00007fff935be1eb
-[NSView(NSConstraintBasedLayout)
_tryToAddConstraint:integralizationAdjustment:mutuallyExclusiveConstraints:]
+ 299
14 AppKit 0x00007fff935bdf77
__50-[NSView(NSConstraintBasedLayout) addConstraints:]_block_invoke +
188
15 AppKit 0x00007fff934afc6c
-[NSView(NSConstraintBasedLayout) addConstraints:] + 279
16 TestSegmented 0x0000000100001209
-[TestWindowController windowDidLoad] + 521
17 AppKit 0x00007fff93608857
-[NSWindowController _windowDidLoad] + 586
18 CoreFoundation 0x00007fff8ba8dbdf -[NSSet
makeObjectsPerformSelector:] + 223
19 AppKit 0x00007fff9346800b
-[NSIBObjectData nibInstantiateWithOwner:options:topLevelObjects:] +
1166
20 AppKit 0x00007fff9364290e -[NSNib
_instantiateNibWithExternalNameTable:options:] + 677
21 AppKit 0x00007fff9364255e -[NSNib
_instantiateWithOwner:options:topLevelObjects:] + 143
22 AppKit 0x00007fff93b8c53c
-[NSStoryboard instantiateControllerWithIdentifier:] + 181
23 AppKit 0x00007fff9343ee64
NSApplicationMain + 840
24 TestSegmented 0x00000001000012a2 main + 34
25 libdyld.dylib 0x00007fff926b45c9 start + 1
)
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