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//
// 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, strong, readonly) MASConstraint *top; 上侧
@property (nonatomic, strong, readonly) MASConstraint *right; 右侧
@property (nonatomic, strong, readonly) MASConstraint *bottom; 下侧
@property (nonatomic, strong, readonly) MASConstraint *leading; 首部
@property (nonatomic, strong, readonly) MASConstraint *trailing; 尾部
@property (nonatomic, strong, readonly) MASConstraint *width; 宽
@property (nonatomic, strong, readonly) MASConstraint *height; 高
@property (nonatomic, strong, readonly) MASConstraint *centerX; 横向中点
@property (nonatomic, strong, readonly) MASConstraint *centerY; 纵向中点
@property (nonatomic, strong, 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, 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, 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, 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