# Masonry [![Build Status](https://travis-ci.org/SnapKit/Masonry.svg?branch=master)](https://travis-ci.org/SnapKit/Masonry) [![Coverage Status](https://img.shields.io/coveralls/SnapKit/Masonry.svg?style=flat-square)](https://coveralls.io/r/SnapKit/Masonry) [![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage) ![Pod Version](https://img.shields.io/cocoapods/v/Masonry.svg?style=flat)
**Masonry is still actively maintained, we are committed to fixing bugs and merging good quality PRs from the wider community. However if you're using Swift in your project, we recommend using [SnapKit](https://github.com/SnapKit/SnapKit) as it provides better type safety with a simpler API.**
Masonry is a light-weight layout framework which wraps AutoLayout with a nicer syntax. Masonry has its own layout DSL which provides a chainable way of describing your NSLayoutConstraints which results in layout code that is more concise and readable.
Masonry supports iOS and Mac OS X.
For examples take a look at the **Masonry iOS Examples** project in the Masonry workspace. You will need to run `pod install` after downloading.
## What's wrong with NSLayoutConstraints?
Under the hood Auto Layout is a powerful and flexible way of organising and laying out your views. However creating constraints from code is verbose and not very descriptive.
Imagine a simple example in which you want to have a view fill its superview but inset by 10 pixels on every side
```obj-c
UIView *superview = self.view;
UIView *view1 = [[UIView alloc] init];
view1.translatesAutoresizingMaskIntoConstraints = NO;
view1.backgroundColor = [UIColor greenColor];
[superview addSubview:view1];
UIEdgeInsets padding = UIEdgeInsetsMake(10, 10, 10, 10);
[superview addConstraints:@[
//view1 constraints
[NSLayoutConstraint constraintWithItem:view1
attribute:NSLayoutAttributeTop
relatedBy:NSLayoutRelationEqual
toItem:superview
attribute:NSLayoutAttributeTop
multiplier:1.0
constant:padding.top],
[NSLayoutConstraint constraintWithItem:view1
attribute:NSLayoutAttributeLeft
relatedBy:NSLayoutRelationEqual
toItem:superview
attribute:NSLayoutAttributeLeft
multiplier:1.0
constant:padding.left],
[NSLayoutConstraint constraintWithItem:view1
attribute:NSLayoutAttributeBottom
relatedBy:NSLayoutRelationEqual
toItem:superview
attribute:NSLayoutAttributeBottom
multiplier:1.0
constant:-padding.bottom],
[NSLayoutConstraint constraintWithItem:view1
attribute:NSLayoutAttributeRight
relatedBy:NSLayoutRelationEqual
toItem:superview
attribute:NSLayoutAttributeRight
multiplier:1
constant:-padding.right],
]];
```
Even with such a simple example the code needed is quite verbose and quickly becomes unreadable when you have more than 2 or 3 views.
Another option is to use Visual Format Language (VFL), which is a bit less long winded.
However the ASCII type syntax has its own pitfalls and its also a bit harder to animate as `NSLayoutConstraint constraintsWithVisualFormat:` returns an array.
## Prepare to meet your Maker!
Heres the same constraints created using MASConstraintMaker
```obj-c
UIEdgeInsets padding = UIEdgeInsetsMake(10, 10, 10, 10);
[view1 mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(superview.mas_top).with.offset(padding.top); //with is an optional semantic filler
make.left.equalTo(superview.mas_left).with.offset(padding.left);
make.bottom.equalTo(superview.mas_bottom).with.offset(-padding.bottom);
make.right.equalTo(superview.mas_right).with.offset(-padding.right);
}];
```
Or even shorter
```obj-c
[view1 mas_makeConstraints:^(MASConstraintMaker *make) {
make.edges.equalTo(superview).with.insets(padding);
}];
```
Also note in the first example we had to add the constraints to the superview `[superview addConstraints:...`.
Masonry however will automagically add constraints to the appropriate view.
Masonry will also call `view1.translatesAutoresizingMaskIntoConstraints = NO;` for you.
## Not all things are created equal
> `.equalTo` equivalent to **NSLayoutRelationEqual**
> `.lessThanOrEqualTo` equivalent to **NSLayoutRelationLessThanOrEqual**
> `.greaterThanOrEqualTo` equivalent to **NSLayoutRelationGreaterThanOrEqual**
These three equality constraints accept one argument which can be any of the following:
#### 1. MASViewAttribute
```obj-c
make.centerX.lessThanOrEqualTo(view2.mas_left);
```
MASViewAttribute | NSLayoutAttribute
------------------------- | --------------------------
view.mas_left | NSLayoutAttributeLeft
view.mas_right | NSLayoutAttributeRight
view.mas_top | NSLayoutAttributeTop
view.mas_bottom | NSLayoutAttributeBottom
view.mas_leading | NSLayoutAttributeLeading
view.mas_trailing | NSLayoutAttributeTrailing
view.mas_width | NSLayoutAttributeWidth
view.mas_height | NSLayoutAttributeHeight
view.mas_centerX | NSLayoutAttributeCenterX
view.mas_centerY | NSLayoutAttributeCenterY
view.mas_baseline | NSLayoutAttributeBaseline
#### 2. UIView/NSView
if you want view.left to be greater than or equal to label.left :
```obj-c
//these two constraints are exactly the same
make.left.greaterThanOrEqualTo(label);
make.left.greaterThanOrEqualTo(label.mas_left);
```
#### 3. NSNumber
Auto Layout allows width and height to be set to constant values.
if you want to set view to have a minimum and maximum width you could pass a number to the equality blocks:
```obj-c
//width >= 200 && width <= 400
make.width.greaterThanOrEqualTo(@200);
make.width.lessThanOrEqualTo(@400)
```
However Auto Layout does not allow alignment attributes such as left, right, centerY etc to be set to constant values.
So if you pass a NSNumber for these attributes Masonry will turn these into constraints relative to the view’s superview ie:
```obj-c
//creates view.left = view.superview.left + 10
make.left.lessThanOrEqualTo(@10)
```
Instead of using NSNumber, you can use primitives and structs to build your constraints, like so:
```obj-c
make.top.mas_equalTo(42);
make.height.mas_equalTo(20);
make.size.mas_equalTo(CGSizeMake(50, 100));
make.edges.mas_equalTo(UIEdgeInsetsMake(10, 0, 10, 0));
make.left.mas_equalTo(view).mas_offset(UIEdgeInsetsMake(10, 0, 10, 0));
```
By default, macros which support [autoboxing](https://en.wikipedia.org/wiki/Autoboxing#Autoboxing) are prefixed with `mas_`. Unprefixed versions are available by defining `MAS_SHORTHAND_GLOBALS` before importing Masonry.
#### 4. NSArray
An array of a mixture of any of the previous types
```obj-c
make.height.equalTo(@[view1.mas_height, view2.mas_height]);
make.height.equalTo(@[view1, view2]);
make.left.equalTo(@[view1, @100, view3.right]);
````
## Learn to prioritize
> `.priority` allows you to specify an exact priority
> `.priorityHigh` equivalent to **UILayoutPriorityDefaultHigh**
> `.priorityMedium` is half way between high and low
> `.priorityLow` equivalent to **UILayoutPriorityDefaultLow**
Priorities are can be tacked on to the end of a constraint chain like so:
```obj-c
make.left.greaterThanO
没有合适的资源?快使用搜索试试~ 我知道了~
iOS-自定义弹窗管理封装组件ZFJPopManager
共131个文件
h:29个
m:25个
plist:12个
需积分: 1 6 下载量 144 浏览量
2022-10-15
23:42:18
上传
评论
收藏 6.75MB ZIP 举报
温馨提示
iOS-自定义弹窗管理封装组件ZFJPopManager 源码
资源详情
资源评论
资源推荐
收起资源包目录
iOS-自定义弹窗管理封装组件ZFJPopManager (131个子文件)
.DS_Store 6KB
MASConstraint.h 8KB
MASUtilities.h 6KB
MASConstraintMaker.h 6KB
View+MASAdditions.h 5KB
View+MASShorthandAdditions.h 5KB
GSPublicMethod.h 4KB
NSArray+MASAdditions.h 3KB
ZFJPopManagerHeader.h 2KB
MASConstraint+Private.h 2KB
ZFJPopManager.h 2KB
ZFJPopView.h 1KB
MASViewConstraint.h 1KB
MASViewAttribute.h 1KB
NSArray+MASShorthandAdditions.h 1016B
ZFJPopModel.h 966B
GSCommon.h 920B
ViewController+MASAdditions.h 891B
Masonry.h 802B
Masonry-umbrella.h 801B
GSBaseViewController.h 508B
MASLayoutConstraint.h 505B
MASCompositeConstraint.h 494B
UIColor+ZFJPopCate.h 355B
Pods-GSDemo-GSDemoUITests-umbrella.h 342B
NSLayoutConstraint+MASDebugAdditions.h 326B
Pods-GSDemoTests-umbrella.h 324B
Pods-GSDemo-umbrella.h 314B
GSHomeViewController.h 232B
AppDelegate.h 217B
Contents.json 2KB
Contents.json 371B
Contents.json 309B
Contents.json 308B
Contents.json 303B
Contents.json 123B
Contents.json 63B
LICENSE 1KB
Podfile.lock 237B
Manifest.lock 237B
MASViewConstraint.m 13KB
MASConstraintMaker.m 10KB
MASConstraint.m 8KB
ZFJPopManager.m 7KB
View+MASAdditions.m 6KB
GSHomeViewController.m 6KB
ZFJPopView.m 6KB
NSArray+MASAdditions.m 6KB
NSLayoutConstraint+MASDebugAdditions.m 6KB
MASCompositeConstraint.m 5KB
UIColor+ZFJPopCate.m 3KB
GSBaseViewController.m 2KB
GSDemoUITests.m 1KB
ViewController+MASAdditions.m 1KB
MASViewAttribute.m 1KB
GSDemoUITestsLaunchTests.m 862B
AppDelegate.m 827B
GSDemoTests.m 796B
main.m 433B
ZFJPopModel.m 260B
MASLayoutConstraint.m 227B
Pods-GSDemo-GSDemoUITests-dummy.m 154B
Pods-GSDemoTests-dummy.m 136B
Pods-GSDemo-dummy.m 126B
Masonry-dummy.m 118B
Pods-GSDemo-GSDemoUITests-acknowledgements.markdown 1KB
Pods-GSDemo-acknowledgements.markdown 1KB
Pods-GSDemoTests-acknowledgements.markdown 133B
README.md 16KB
Pods-GSDemo-GSDemoUITests.modulemap 140B
Pods-GSDemoTests.modulemap 122B
Pods-GSDemo.modulemap 112B
Masonry.modulemap 104B
project.pbxproj 59KB
project.pbxproj 42KB
GSPrefixHeader.pch 586B
Masonry-prefix.pch 195B
Pods-GSDemo-GSDemoUITests-acknowledgements.plist 2KB
Pods-GSDemo-acknowledgements.plist 2KB
xcschememanagement.plist 839B
Pods-GSDemoTests-Info.plist 828B
Pods-GSDemo-Info.plist 828B
Pods-GSDemo-GSDemoUITests-Info.plist 828B
Masonry-Info.plist 828B
Pods-GSDemoTests-acknowledgements.plist 805B
xcschememanagement.plist 341B
IDEWorkspaceChecks.plist 238B
IDEWorkspaceChecks.plist 238B
Info.plist 181B
image_3.png 1.8MB
image_4.png 1.23MB
image_0.png 1.08MB
image_1.png 1.06MB
image_6.png 329KB
right_image.png 329KB
image_5.png 233KB
user_image.png 233KB
image_2.png 199KB
Image.png 15KB
NoticeContact_Normal@3x.png 602B
共 131 条
- 1
- 2
ZFJ_张福杰
- 粉丝: 708
- 资源: 60
上传资源 快速赚钱
- 我的内容管理 展开
- 我的资源 快来上传第一个资源
- 我的收益 登录查看自己的收益
- 我的积分 登录查看自己的积分
- 我的C币 登录后查看C币余额
- 我的收藏
- 我的下载
- 下载帮助
安全验证
文档复制为VIP权益,开通VIP直接复制
信息提交成功
评论0