布局相关工具类 参考《AutoLayout开发秘籍》第二版
//
// UIView+ConstranitMatching.h
// IosAutoLayout
//
// Created by ranzhou on 15/8/8.
// Copyright (c) 2015年 ranzhou. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface UIView (ConstranitMatching)
/*
查找与某一指定约束属性相同的约束。
*/
-(NSLayoutConstraint*)constraintMatchingConstraint:(NSLayoutConstraint*)aConstraint;
/*
删除与某一指定约束属性相同的约束。
*/
-(BOOL)removeMatchingConstraint:(NSLayoutConstraint*)aConstraint;
@end
//
// UIView+ConstranitMatching.m
// IosAutoLayout
//
// Created by ranzhou on 15/8/8.
// Copyright (c) 2015年 ranzhou. All rights reserved.
//
#import "UIView+ConstranitMatching.h"
#import "NSLayoutConstraint+ConstraintMatching.h"
#import "UIView+HierarchySupport.h"
@implementation UIView (ConstranitMatching)
-(NSLayoutConstraint*)constraintMatchingConstraint:(NSLayoutConstraint*)aConstraint
{
for(NSLayoutConstraint *constraint in self.constraints)
{
if ([aConstraint isEqualToLayoutConstraint:constraint])
{
return constraint;
}
}
for (UIView *view in [self superviews])
{
for(NSLayoutConstraint *constraint in view.constraints)
{
if ([aConstraint isEqualToLayoutConstraint:constraint])
{
return constraint;
}
}
}
return nil;
}
-(BOOL)removeMatchingConstraint:(NSLayoutConstraint*)aConstraint
{
for(NSLayoutConstraint *constraint in self.constraints)
{
if ([aConstraint isEqualToLayoutConstraint:constraint])
{
[self removeConstraint:constraint];
return YES;
}
}
for (UIView *view in [self superviews])
{
for(NSLayoutConstraint *constraint in view.constraints)
{
if ([aConstraint isEqualToLayoutConstraint:constraint])
{
[view removeConstraint:constraint];
return YES;
}
}
}
return NO;
}
@end
//
// NSLayoutConstraint+SelfInstall.h
// IosAutoLayout
//
// Created by ranzhou on 15/8/8.
// Copyright (c) 2015年 ranzhou. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface NSLayoutConstraint (SelfInstall)
//自动安装。
-(BOOL)install;
-(BOOL)installWithPriority:(UILayoutPriority)Priority;
//移除自己。
-(void)remove;
/*
1:移除与自己相匹配的约束。
2:无需使用变量之乡某一约束，需要删除的时候，直接创建一个相同属性的约束removeMatchingConstraint即可。
*/
-(void)removeMatchingConstraint;
@end
//
// NSLayoutConstraint+SelfInstall.m
// IosAutoLayout
//
// Created by ranzhou on 15/8/8.
// Copyright (c) 2015年 ranzhou. All rights reserved.
//
#import "NSLayoutConstraint+SelfInstall.h"
#import "NSLayoutConstraint+ViewHierarchy.h"
#import "UIView+HierarchySupport.h"
#import "UIView+ConstranitMatching.h"
@implementation NSLayoutConstraint (SelfInstall)
/*
unary/'junəri/adj. [数]一元的
*/
-(BOOL)install
{
//Handle Unary constraint
if (self.isUnary)
{
[self.firstView addConstraint:self];
return YES;
}
UIView * view = [self.firstView nearestCommonAncestorToView:self.secondView];
if (view)
{
[view addConstraint:self];
return YES;
}
else
{
return NO;
}
}
-(BOOL)installWithPriority:(UILayoutPriority)Priority
{
self.priority = Priority;
return [self install];
}
-(void)remove
{
if ([self.firstView.constraints containsObject:self])
{
[self.firstView removeConstraint:self];
return;
}
if ([self.secondView.constraints containsObject:self])
{
[self.secondView removeConstraint:self];
return;
}
UIView * tempView = [self.firstView nearestCommonAncestorToView:self.secondView];
if (tempView)
{
if ([tempView.constraints containsObject:self])
{
[tempView removeConstraint:self];
}
}
for (UIView *view in [self.firstView superviews])
{
if ([view.constraints containsObject:self])
{
[view removeConstraint:self];
return;
}
}
for (UIView *view in [self.secondView superviews])
{
if ([view.constraints containsObject:self])
{
[view removeConstraint:self];
return;
}
}
}
-(void)removeMatchingConstraint
{
if (![self.firstView removeMatchingConstraint:self])
{
[self.secondView removeMatchingConstraint:self];
}
}
@end
//
// UIView+LayoutTool.h
// IosAutoLayout
//
// Created by ranzhou on 15/8/8.
// Copyright (c) 2015年 ranzhou. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface LayoutTool:NSObject
//top与bottom相关设置
+ (void)layoutTopOfView:(UIView*)viewOne equalTopOfView:(UIView*)viewTwo;
+ (void)layoutTopOfView:(UIView*)viewOne equalTopOfView:(UIView*)viewTwo addConstant:(CGFloat)constant;
+ (void)layoutBottomOfView:(UIView*)viewOne equalBottomOfView:(UIView*)viewTwo;
+ (void)layoutBottomOfView:(UIView*)viewOne equalBottomOfView:(UIView*)viewTwo addConstant:(CGFloat)constant;
+ (void)layoutTopOfView:(UIView*)viewOne equalBottomOfView:(UIView*)viewTwo;
+ (void)layoutTopOfView:(UIView*)viewOne equalBottomOfView:(UIView*)viewTwo addConstant:(CGFloat)constant;
//left与right相关设置
+ (void)layoutLeftOfView:(UIView*)viewOne equalLeftOfView:(UIView*)viewTwo;
+ (void)layoutLeftOfView:(UIView*)viewOne equalLeftOfView:(UIView*)viewTwo addConstant:(CGFloat)constant;
+ (void)layoutRightOfView:(UIView*)viewOne equalRightOfView:(UIView*)viewTwo;
+ (void)layoutRightOfView:(UIView*)viewOne equalRightOfView:(UIView*)viewTwo addConstant:(CGFloat)constant;
+ (void)layoutLeftOfView:(UIView*)viewOne equalRightOfView:(UIView*)viewTwo;
+ (void)layoutLeftOfView:(UIView*)viewOne equalRightOfView:(UIView*)viewTwo addConstant:(CGFloat)constant;
//中心点相关设置
+ (void)layoutCenterXOfView:(UIView*)viewOne equalCenterXOfView:(UIView*)viewTwo;
+ (void)layoutCenterXOfView:(UIView*)viewOne equalCenterXOfView:(UIView*)viewTwo addConstant:(CGFloat)constant;
+ (void)layoutCenterYOfView:(UIView*)viewOne equalCenterYOfView:(UIView*)viewTwo;
+ (void)layoutCenterYOfView:(UIView*)viewOne equalCenterYOfView:(UIView*)viewTwo addConstant:(CGFloat)constant;
//宽高相关设置
+ (void)layoutWidthOfView:(UIView*)viewOne equalTo:(CGFloat)width;
+ (void)layoutHeightOfView:(UIView*)viewOne equalTo:(CGFloat)Height;
+ (void)layoutWidthOfView:(UIView*)viewOne equalWidthOfView:(UIView*)viewTwo;
+ (void)layoutWidthOfView:(UIView*)viewOne equalWidthOfView:(UIView*)viewTwo addConstant:(CGFloat)constant;
+ (void)layoutHeightOfView:(UIView*)viewOne equalHeightOfView:(UIView*)viewTwo;
+ (void)layoutHeightOfView:(UIView*)viewOne equalHeightOfView:(UIView*)viewTwo addConstant:(CGFloat)constant;
@end
//
// UIView+LayoutTool.m
// IosAutoLayout
//
// Created by ranzhou on 15/8/8.
// Copyright (c) 2015年 ranzhou. All rights reserved.
//
#import "LayoutTool.h"
#import "NSLayoutConstraint+SelfInstall.h"
@implementation LayoutTool
//-------------------------------------------------------------------------------
+ (void)layoutLeftOfView:(UIView*)viewOne equalLeftOfView:(UIView*)viewTwo
{
[self layoutLeftOfView:viewOne equalLeftOfView:viewTwo addConstant:0];
}
+ (void)layoutLeftOfView:(UIView*)viewOne equalLeftOfView:(UIView*)viewTwo addConstant:(CGFloat)constant
{
NSLayoutConstraint *tempCon = [NSLayoutConstraint constraintWithItem:viewOne attribute:NSLayoutAttributeLeft relatedBy:NSLayoutRelationEqual toItem:viewTwo attribute:NSLayoutAttributeLeft multiplier:1.0 constant:constant];
[tempCon install];
}
//-------------------------------------------------------------------------------
+ (void)layoutRightOfView:(UIView*)viewOne equalRightOfView:(UIView*)viewTwo
{
[self layoutRightOfView:viewOne equalRightOfView:viewTwo addConstant:0];
}
+ (void)layoutRightOfView:(UIView*)viewOne equalRightOfView:(UIView*)viewTwo addConstant:(CGFloat)constant
{
NSLayoutConstraint *tempCon = [NSLayoutConstraint constraintWithItem:viewOne attribute:NSLayoutAttributeRight relatedBy:NSLayoutRelationEqual toItem:viewTwo attribute:NSLayoutAttributeRight multiplier:1.0 constant:constant];
[tempCon install];
}
//-------------------------------------------------------------------------------
+ (void)layoutTopOfView:(UIView*)viewOne equalTopOfView:(UIView*)viewTwo
{
[self layoutTopOfView:viewOne equalTopOfView:viewTwo addConstant:0];
}
+ (void)layoutTopOfView:(UIView*)viewOne equalTopOfView:(UIView*)viewTwo addConstant:(CGFloat)constant
{
NSLayoutConstraint *tempCon = [NSLayoutConstraint constraintWithItem:viewOne attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:viewTwo attribute:NSLayoutAttributeTop multiplier:1.0 constant:constant];
[tempCon install];
}
//-------------------------------------------------------------------------------
+ (void)layoutBottomOfView:(UIView*)viewOne equalBottomOfView:(UIView*)viewTwo
{
[self layoutBottomOfView:viewOne equalBottomOfView:viewTwo addConstant:0];
}
+ (void)layoutBottomOfView:(UIView*)viewOne equalBottomOfView:(UIView*)viewTwo addConstant:(CGFloat)constant
{
NSLayoutConstraint *tempCon = [NSLayoutConstraint constraintWithItem:viewOne attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:viewTwo attribute:NSLayoutAttributeBottom multiplier:1.0 constant:constant];
[tempCon install];
}
//-------------------------------------------------------------------------------
+ (void)layoutLeftOfView:(UIView*)viewOne equalRightOfView:(UIView*)viewTwo
{
[self layoutLeftOfView:viewOne equalRightOfView:viewTwo addConstant:0];
}
+ (void)layoutLeftOfView:(UIView*)viewOne equalRightOfView:(UIView*)viewTwo addConstant:(CGFloat)constant
{
NSLayoutConstraint *tempCon = [NSLayoutConstraint constraintWithItem:viewOne attribute:NSLayoutAttributeLeft relatedBy:NSLayoutRelationEqual toItem:viewTwo attribute:NSLayoutAttributeRight multiplier:1.0 constant:constant];
[tempCon install];
}
//-------------------------------------------------------------------------------
+ (void)layoutTopOfView:(UIView*)viewOne equalBottomOfView:(UIView*)viewTwo
{
[self layoutTopOfView:viewOne equalBottomOfView:viewTwo addConstant:0];
}
+ (void)layoutTopOfView:(UIView*)viewOne equalBottomOfView:(UIView*)viewTwo addConstant:(CGFloat)constant
{
NSLayoutConstraint *tempCon = [NSLayoutConstraint constraintWithItem:viewOne attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:viewTwo attribute:NSLayoutAttributeBottom multiplier:1.0 constant:constant];
[tempCon install];
}
//-------------------------------------------------------------------------------
+ (void)layoutCenterXOfView:(UIView*)viewOne equalCenterXOfView:(UIView*)viewTwo
{
[self layoutCenterXOfView:viewOne equalCenterXOfView:viewTwo addConstant:0];
}
+ (void)layoutCenterXOfView:(UIView*)viewOne equalCenterXOfView:(UIView*)viewTwo addConstant:(CGFloat)constant
{
NSLayoutConstraint *tempCon = [NSLayoutConstraint constraintWithItem:viewOne attribute:NSLayoutAttributeCenterX relatedBy:NSLayoutRelationEqual toItem:viewTwo attribute:NSLayoutAttributeCenterX multiplier:1.0 constant:constant];
[tempCon install];
}
+ (void)layoutCenterYOfView:(UIView*)viewOne equalCenterYOfView:(UIView*)viewTwo
{
[self layoutCenterYOfView:viewOne equalCenterYOfView:viewTwo addConstant:0];
}
+ (void)layoutCenterYOfView:(UIView*)viewOne equalCenterYOfView:(UIView*)viewTwo addConstant:(CGFloat)constant
{
NSLayoutConstraint *tempCon = [NSLayoutConstraint constraintWithItem:viewOne attribute:NSLayoutAttributeCenterY relatedBy:NSLayoutRelationEqual toItem:viewTwo attribute:NSLayoutAttributeCenterY multiplier:1.0 constant:constant];
[tempCon install];
}
+ (void)layoutWidthOfView:(UIView*)viewOne equalWidthOfView:(UIView*)viewTwo
{
[self layoutWidthOfView:viewOne equalWidthOfView:viewTwo addConstant:0];
}
+ (void)layoutWidthOfView:(UIView*)viewOne equalWidthOfView:(UIView*)viewTwo addConstant:(CGFloat)constant
{
NSLayoutConstraint *tempCon = [NSLayoutConstraint constraintWithItem:viewOne attribute:NSLayoutAttributeWidth relatedBy:NSLayoutRelationEqual toItem:viewTwo attribute:NSLayoutAttributeWidth multiplier:1.0 constant:constant];
[tempCon install];
}
+ (void)layoutHeightOfView:(UIView*)viewOne equalHeightOfView:(UIView*)viewTwo
{
[self layoutHeightOfView:viewOne equalHeightOfView:viewTwo addConstant:0];
}
+ (void)layoutHeightOfView:(UIView*)viewOne equalHeightOfView:(UIView*)viewTwo addConstant:(CGFloat)constant
{
NSLayoutConstraint *tempCon = [NSLayoutConstraint constraintWithItem:viewOne attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:viewTwo attribute:NSLayoutAttributeHeight multiplier:1.0 constant:constant];
[tempCon install];
}
+ (void)layoutWidthOfView:(UIView*)viewOne equalTo:(CGFloat)width
{
NSLayoutConstraint *tempCon = [NSLayoutConstraint constraintWithItem:viewOne attribute:NSLayoutAttributeWidth relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:1.0 constant:width];
[tempCon install];
}
+ (void)layoutHeightOfView:(UIView*)viewOne equalTo:(CGFloat)Height
{
NSLayoutConstraint *tempCon = [NSLayoutConstraint constraintWithItem:viewOne attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:1.0 constant:Height];
[tempCon install];
}
@end
//
// UIView+HierarchySupport.h
// IosAutoLayout
//
// Created by ranzhou on 15/8/8.
// Copyright (c) 2015年 ranzhou. All rights reserved.
//
#import <UIKit/UIKit.h>
/*
hierarchy /'haɪərɑrki/n. 等级制度；统治集团, 领导层；
*/
@interface UIView (HierarchySupport)
/*
Return an array of all superviews.
*/
- (NSArray*)superviews;
/*
Test if the current view has a superview relationship to a view
*/
- (BOOL)isAncestorOfView:(UIView*)aView;
/*
Return the nearest common ancestor between self and another view
*/
- (UIView*)nearestCommonAncestorToView:(UIView*)aView;
@end
//
// UIView+HierarchySupport.m
// IosAutoLayout
//
// Created by ranzhou on 15/8/8.
// Copyright (c) 2015年 ranzhou. All rights reserved.
//
#import "UIView+HierarchySupport.h"
@implementation UIView (HierarchySupport)
/*
Return an array of all superviews.
*/
- (NSArray*)superviews
{
NSMutableArray * superViews = [[NSMutableArray alloc]init];
UIView * view = self;
while (view.superview)
{
[superViews addObject:view.superview];
view = view.superview;
}
return superViews;
}
/*
Test if the current view has a superview relationship to a view
*/
- (BOOL)isAncestorOfView:(UIView*)aView
{
return [[aView superviews]containsObject:self];
}
/*
Return the nearest common ancestor between self and another view
*/
- (UIView*)nearestCommonAncestorToView:(UIView*)aView
{
if (aView == nil)
{
return nil;
}
//Check for same view
if([self isEqual:aView])
{
return self;
}
//Check for direct superview relationship
if ([self isAncestorOfView:aView])
{
return self;
}
if ([aView isAncestorOfView:self])
{
return aView;
}
NSArray *superviews1 = [self superviews];
NSArray *superviews2 = [aView superviews];
for (UIView *tempView in superviews1)
{
if ([superviews2 containsObject:tempView])
{
return tempView;
}
}
return nil;
}
@end
//
// NSLayoutConstraint+ConstraintMatching.h
// IosAutoLayout
//
// Created by ranzhou on 15/8/8.
// Copyright (c) 2015年 ranzhou. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface NSLayoutConstraint (ConstraintMatching)
//This ignores any priority,looking only at y(R)mx+b
-(BOOL) isEqualToLayoutConstraint:(NSLayoutConstraint*)constraint;
@end
//
// NSLayoutConstraint+ConstraintMatching.m
// IosAutoLayout
//
// Created by ranzhou on 15/8/8.
// Copyright (c) 2015年 ranzhou. All rights reserved.
//
#import "NSLayoutConstraint+ConstraintMatching.h"
@implementation NSLayoutConstraint (ConstraintMatching)
//This ignores any priority,looking only at y(R)mx+b
-(BOOL) isEqualToLayoutConstraint:(NSLayoutConstraint*)constraint
{
if ([self isEqual:constraint]) {
return YES;
}
if (self.firstItem!=constraint.firstItem) {
return NO;
}
if (self.secondItem!=constraint.secondItem) {
return NO;
}
if (self.firstAttribute!=constraint.firstAttribute) {
return NO;
}
if (self.secondAttribute!=constraint.secondAttribute) {
return NO;
}
if (self.relation!=constraint.relation) {
return NO;
}
if (self.multiplier!=constraint.multiplier) {
return NO;
}
if (self.constant!=constraint.constant) {
return NO;
}
return YES;
}
@end
//
// NSLayoutConstraint+ViewHierarchy.h
// IosAutoLayout
//
// Created by ranzhou on 15/8/8.
// Copyright (c) 2015年 ranzhou. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface NSLayoutConstraint (ViewHierarchy)
@property (nonatomic,readonly) UIView *firstView;
@property (nonatomic,readonly) UIView *secondView;
@property (nonatomic,readonly) BOOL isUnary;
@end
//
// NSLayoutConstraint+ViewHierarchy.m
// IosAutoLayout
//
// Created by ranzhou on 15/8/8.
// Copyright (c) 2015年 ranzhou. All rights reserved.
//
#import "NSLayoutConstraint+ViewHierarchy.h"
@implementation NSLayoutConstraint (ViewHierarchy)
/*
cast/kæst/
vt. & vi. 投, 掷, 扔;浇铸
vt. 投射, 加…于;分配(演戏剧等的)角色
n. 投, 掷, 抛, 扔
铸造物; 塑件
石膏
演员表, 全体演员
n. 原主人不再要的衣服/casting vote决定票
*/
//Cast the first item to a view
-(UIView*)firstView
{
if ([self.firstItem isKindOfClass:[UIView class]])
{
return self.firstItem;
}
return nil;
}
//Cast the second item to a view
-(UIView*)secondView
{
if ([self.secondItem isKindOfClass:[UIView class]])
{
return self.secondItem;
}
return nil;
}
-(BOOL)isUnary
{
if (self.firstView!=nil&&self.secondView==nil)
{
return YES;
}
return NO;
}
@end