-
-
Save SuperY/bbb6b0e8fc4cb801570a to your computer and use it in GitHub Desktop.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#import <UIKit/UIKit.h> | |
@interface UIView (TLLayout) | |
@property (nonatomic, strong) NSArray *hiddenConstraints; | |
// set hidden and remove any constraints involving this view from its superview | |
- (void)hideAndRemoveConstraints; | |
- (void)showAndRestoreConstraints; | |
@end |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#import <objc/runtime.h> | |
#import "UIView+TLLayout.h" | |
MAKE_CATEGORIES_LOADABLE(UIView_TLLayout) | |
static char kTLHiddenConstraintsKey; | |
@implementation UIView (TLLayout) | |
@dynamic hiddenConstraints; | |
- (NSArray *)hiddenConstraints { | |
return objc_getAssociatedObject(self, &kTLHiddenConstraintsKey); | |
} | |
- (void)setHiddenConstraints:(NSArray *)constraints { | |
objc_setAssociatedObject(self, &kTLHiddenConstraintsKey, constraints, OBJC_ASSOCIATION_RETAIN_NONATOMIC); | |
} | |
- (void)hideAndRemoveConstraints | |
{ | |
self.hidden = YES; | |
if (!self.hiddenConstraints) { | |
self.hiddenConstraints = [self.superview.constraints objectsPassingTest:^BOOL(NSLayoutConstraint *constraint, NSUInteger idx, BOOL *stop) { | |
return constraint.firstItem == self || constraint.secondItem == self; | |
}]; | |
[self.superview removeConstraints:self.hiddenConstraints]; | |
} | |
} | |
- (void)showAndRestoreConstraints | |
{ | |
if (self.hiddenConstraints) { | |
[self.superview addConstraints:self.hiddenConstraints]; | |
self.hiddenConstraints = nil; | |
} | |
self.hidden = NO; | |
} | |
@end |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment