下面是编程之家 jb51.cc 通过网络收集整理的代码片段。
编程之家小编现在分享给大家，也给大家做个参考。
// // ViewController.m // Masonry自动布局 // // Created by 王木木 on 15/11/18. // copyright © 2015年 王木木. All rights reserved. //学习自http://www.cocoachina.com/ios/20141219/10702.html /* @property (nonatomic,strong,readonly) MASConstraint *left; 左侧 @property (nonatomic,readonly) MASConstraint *top; 上侧 @property (nonatomic,readonly) MASConstraint *right; 右侧 @property (nonatomic,readonly) MASConstraint *bottom; 下侧 @property (nonatomic,readonly) MASConstraint *leading; 首部 @property (nonatomic,readonly) MASConstraint *trailing; 尾部 @property (nonatomic,readonly) MASConstraint *width; 宽 @property (nonatomic,readonly) MASConstraint *height; 高 @property (nonatomic,readonly) MASConstraint *centerX; 横向中点 @property (nonatomic,readonly) MASConstraint *centerY; 纵向中点 @property (nonatomic,readonly) MASConstraint *baseline; 文本基线 */ /* 首先在Masonry中能够添加autolayout约束有三个函数 - (NSArray *)mas_makeConstraints:(void(^)(MASConstraintMaker *make))block; - (NSArray *)mas_updateConstraints:(void(^)(MASConstraintMaker *make))block; - (NSArray *)mas_remakeConstraints:(void(^)(MASConstraintMaker *make))block; mas_makeConstraints 只负责新增约束 Autolayout不能同时存在两条针对于同一对象的约束 否则会报错 mas_updateConstraints 针对上面的情况 会更新在block中出现的约束 不会导致出现两个相同约束的情况 mas_remakeConstraints 则会清除之前的所有约束 仅保留最新的约束 三种函数善加利用 就可以应对各种情况了 */ #import "ViewController.h" #import "View+MASAdditions.h" #import "View+MASShorthandAdditions.h" @interface ViewController () @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view,typically from a nib. // 设置约束前 [self view1]; } //1. [基础] 居中显示一个view -(void)view1{ UIView *view = [UIView new]; view.backgroundColor = [UIColor blackColor]; [self.view addSubview:view]; [view mas_makeConstraints:^(MASConstraintMaker *make) { make.center.equalTo(self.view); make.size.mas_equalTo(CGSizeMake(300,300)); }]; } //2让一个view略小于其superView(边距为10) -(void)view2{ UIView *view = [UIView new]; view.backgroundColor = [UIColor blackColor]; //在做autoLayout之前 一定要先将view添加到superview上 否则会报错 [self.view addSubview:view]; //mas_makeConstraints就是Masonry的autolayout添加函数 将所需的约束添加到block中行了 [view mas_makeConstraints:^(MASConstraintMaker *make) { //将sv居中 make.center.equalTo(self.view); //将size设置成(300,300) make.size.mas_equalTo(CGSizeMake(300,300)); }]; UIView *view1 = [UIView new]; view1.backgroundColor = [UIColor redColor]; [view addSubview:view1]; [view1 mas_makeConstraints:^(MASConstraintMaker *make) { // make.edges.equalTo(view).width.insets(UIEdgeInsetsMake(10,10,10)); /**********************************************************************/ /* 这里有意思的地方是and和with 其实这两个函数什么事情都没做 - (MASConstraint *)with { return self; } - (MASConstraint *)and { return self; } 但是用在这种链式语法中 就非常的巧妙和易懂 不得不佩服作者的心思(虽然我现在基本都会省略) */ make.top.equalTo(view.mas_top).with.offset(20); make.left.equalTo(view).with.offset(20); make.bottom.equalTo(view).with.offset(-20); make.right.equalTo(view).with.offset(-20); /**********************************************************************/ // make.top.left.bottom.and.right.equalTo(view).with.insets(UIEdgeInsetsMake(30,30,30)); /**********************************************************************上面三种效果一样*/ }]; } //3. [初级] 让两个高度为150的view垂直居中且等宽且等间隔排列 间隔为10(自动计算其宽度) -(void)view3{ //括号里面是数字或定值时用 mas_equalTo 括号里面是量词 对象的时候用equalTo int padd = 10; UIView *view = [UIView new]; view.backgroundColor = [UIColor blackColor]; UIView *view1 = [UIView new]; view1.backgroundColor = [UIColor yellowColor]; UIView *view2 = [UIView new]; view2.backgroundColor = [UIColor yellowColor]; [self.view addSubview:view]; [view addSubview:view1]; [view addSubview:view2]; [view mas_makeConstraints:^(MASConstraintMaker *make) { make.center.equalTo(self.view); make.size.mas_equalTo(CGSizeMake(300,300)); }]; [view1 mas_makeConstraints:^(MASConstraintMaker *make) { make.centerY.mas_equalTo(view.mas_centerY); make.left.equalTo(view.mas_left).with.offset(padd); make.right.equalTo(view2.mas_left).with.offset(-padd); make.height.mas_equalTo(@150); make.width.equalTo(view2); }]; [view2 mas_makeConstraints:^(MASConstraintMaker *make) { make.centerY.mas_equalTo(view.mas_centerY); make.left.equalTo(view1.mas_right).with.offset(padd); make.right.equalTo(view.mas_right).with.offset(-padd); make.height.mas_equalTo(@150); make.width.mas_equalTo(view1.mas_width); }]; } //4. [中级] 在UIScrollView顺序排列一些view并自动计算contentSize -(void)view4{ UIView *view = [UIView new]; view.backgroundColor = [UIColor blackColor]; UIScrollView *scroll = [UIScrollView new]; scroll.backgroundColor = [UIColor purpleColor]; [self.view addSubview:view]; [view addSubview:scroll]; [view mas_makeConstraints:^(MASConstraintMaker *make) { make.center.equalTo(self.view); make.size.mas_equalTo(CGSizeMake(300,300)); }]; [scroll mas_makeConstraints:^(MASConstraintMaker *make) { make.edges.equalTo(view).width.insets(UIEdgeInsetsMake(5,5,5)); }]; } -(void)view5{ UITextField *pwdTextField = [UITextField new]; pwdTextField.backgroundColor = [UIColor blackColor]; [self.view addSubview:pwdTextField]; UITextField *twopwdTextField = [UITextField new]; twopwdTextField.backgroundColor = [UIColor yellowColor]; [self.view addSubview:twopwdTextField]; twopwdTextField.placeholder = @"请再次输入密码"; twopwdTextField.layer.masksToBounds = YES; twopwdTextField.layer.cornerRadius = 5; [pwdTextField mas_makeConstraints:^(MASConstraintMaker *make) { make.center.equalTo(self.view); make.size.mas_equalTo(CGSizeMake(300,300)); }]; [twopwdTextField mas_makeConstraints:^(MASConstraintMaker *make) { // make.center.equalTo(self.view); make.top.equalTo(pwdTextField.mas_bottom).with.offset(20); // make.centerY.mas_equalTo(pwdTextField.mas_centerY); make.left.mas_equalTo(pwdTextField.mas_left); make.right.mas_equalTo(pwdTextField.mas_right); make.width.mas_equalTo(pwdTextField.mas_width); make.height.mas_equalTo(pwdTextField.mas_height); }]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // dispose of any resources that can be recreated. } @end
以上是编程之家(jb51.cc)为你收集整理的全部代码内容，希望文章能够帮你解决所遇到的程序开发问题。
如果觉得编程之家网站内容还不错，欢迎将编程之家网站推荐给程序员好友。
版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 dio@foxmail.com 举报，一经查实，本站将立刻删除。
