swift登录demo

  • w2_678037
    了解作者
  • 842.1KB
    文件大小
  • zip
    文件格式
  • 0
    收藏次数
  • VIP专享
    资源类型
  • 0
    下载次数
  • 2022-05-13 05:30
    上传日期
这是一个swift demo 包含swift的基本语法,使用pod 集成, 不使用 xib,纯代码编程, 包含网络请求封装类.. 枚举, 扩展,结构体,等等等~~
Healthiby.zip
内容介绍
# 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&rsquo;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
评论
    相关推荐
    • Swift
      我的Swift学习计划 01-表情符号 设计使用者介面 使用UIButton建立按钮并加上程式码 变更按钮颜色 运用UIAlertController与UIAlertAction 将视图控制器的视图的背景变成黑色 02-你好世界 使用Auto Layout建立一个支持...
    • Swift
      Swift 教育SWIFT网络应用 作者:Gregory S. DeLozier博士版本0.1日期:2021年1月19日
    • Swift
      Swift
    • swift 基础
      swift学习,简单基础学习,基础语法,基础数据类型
    • Apple Swift
      Apple Swift,网上收集来的教程,非常适合ISO开发人员学习。
    • swift weather
      基于Swift开发的天气预报软件,合成网络流
    • swift tableview
      swift tableview cell展开/折叠 填写信息, tableview自适应高度,tableview的cell嵌套tableview 自适应
    • Advanced Swift
      高级 Swift 学习的一本好书 高级 Swift 学习的一本好书
    • Swift
      Swift
    • swift 2048
      用最新的swift3.0写的2048小游戏的经典模式,通过上、下、左、右滑动屏幕实现数字块的滑动、融合、更新新的数字块,同时进行分数的累加和实时更新,可以供swift开发的初学者参考和学习。