Masonry是一个轻量级的布局框架，拥有自己的描述语法，采用更优雅的链式语法封装自动布局，简洁明了并具有高可读性，而且同时支持 iOS 和 Max OS X。Masonry是一个用代码写iOS或OS界面的库，可以代替Auto layout。
Masonry的github地址：https://github.com/SnapKit/Masonry
Masonry配置
- 推荐使用pods方式引入类库，pod ‘Masonry’
- 引入头文件 #import “Masonry.h”
Masonry使用讲解
mas_makeConstraints 是给view添加约束，约束有几种，分别是边距，宽，高，左上右下距离，基准线。添加过约束后可以有修正，修正有offset（位移）修正和multipliedBy（倍率）修正。
语法一般是 make.equalTo or make.greaterThanOrEqualTo or make.lessThanOrEqualTo + 倍数和位移修正。
注意点:
- 使用 mas_makeConstraints方法的元素必须事先添加到父元素的中，例如
- masequalTo 和 equalTo 区别：masequalTo 比equalTo多了类型转换操作，一般来说，大多数时候两个方法都是 通用的，但是对于数值元素使用mas_equalTo。对于对象或是多个属性的处理，使用equalTo。特别是多个属性时，必须使用equalTo,例如
-
注意到方法with和and,这连个方法其实没有做任何操作，方法只是返回对象本身，这这个方法的左右完全是为了方法写的时候的可读性 。
和
是完全一样的，但是明显的加了and方法的语句可读性 更好点。
Masonry实例
Masonry初级使用例子
// exp1: 中心点与self.view相同，宽度为*
-(void)exp1{
UIView *view = [UIView new];
[view setBackgroundColor:[UIColor redColor]];
[self.view addSubview:view];
[view mas_makeConstraints:^(MASConstraintMaker *make) {
make.center.equalTo(self.view);
make.size.mas_equalTo(CGSizeMake(,));
}];
}
//exp2: 上下左右边距都为
-(void)exp2{
UIView *view = [UIView new];
[view setBackgroundColor:[UIColor redColor]];
[self.view addSubview:view];
[view mas_makeConstraints:^(MASConstraintMaker *make) {
make.edges.equalTo(self.view).with.insets(UIEdgeInsetsMake(, , , ));
// make.left.equalTo(self.view).with.offset();
// make.right.equalTo(self.view).with.offset(-);
// make.top.equalTo(self.view).with.offset();
// make.bottom.equalTo(self.view).with.offset(-);
}];
}
//exp3 让两个高度为的view垂直居中且等宽且等间隔排列 间隔为
-(void)exp3{
UIView *view1 = [UIView new];
[view1 setBackgroundColor:[UIColor redColor]];
[self.view addSubview:view1];
UIView *view2 = [UIView new];
[view2 setBackgroundColor:[UIColor redColor]];
[self.view addSubview:view2];
[view1 mas_makeConstraints:^(MASConstraintMaker *make) {
make.centerY.mas_equalTo(self.view.mas_centerY);
make.height.mas_equalTo();
make.width.mas_equalTo(view2.mas_width);
make.left.mas_equalTo(self.view.mas_left).with.offset();
make.right.mas_equalTo(view2.mas_left).offset(-);
}];
[view2 mas_makeConstraints:^(MASConstraintMaker *make) {
make.centerY.mas_equalTo(self.view.mas_centerY);
make.height.mas_equalTo();
make.width.mas_equalTo(view1.mas_width);
make.left.mas_equalTo(view1.mas_right).with.offset();
make.right.equalTo(self.view.mas_right).offset(-);
}];
}
Masonry高级使用例子1
iOS计算器使用Masorny布局：
//高级布局练习 ios自带计算器布局
-(void)exp4{
//申明区域，displayView是显示区域，keyboardView是键盘区域
UIView *displayView = [UIView new];
[displayView setBackgroundColor:[UIColor blackColor]];
[self.view addSubview:displayView];
UIView *keyboardView = [UIView new];
[self.view addSubview:keyboardView];
//先按：分割 displView（显示结果区域）和 keyboardView（键盘区域）
[displayView mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(self.view.mas_top);
make.left.and.right.equalTo(self.view);
make.height.equalTo(keyboardView).multipliedBy(f);
}];
[keyboardView mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(displayView.mas_bottom);
make.bottom.equalTo(self.view.mas_bottom);
make.left.and.right.equalTo(self.view);
}];
//设置显示位置的数字为
UILabel *displayNum = [[UILabel alloc]init];
[displayView addSubview:displayNum];
displayNum.text = @"0";
displayNum.font = [UIFont fontWithName:@"HeiTi SC" size:];
displayNum.textColor = [UIColor whiteColor];
displayNum.textAlignment = NSTextAlignmentRight;
[displayNum mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.and.right.equalTo(displayView).with.offset(-);
make.bottom.equalTo(displayView).with.offset(-);
}];
//定义键盘键名称，？号代表合并的单元格
NSArray *keys = @[@"AC",@"+/-",@"%",@"÷"
,@"7",@"8",@"9",@"x"
,@"4",@"5",@"6",@"-"
,@"1",@"2",@"3",@"+"
,@"0",@"?",@".",@"="];
int indexOfKeys = ;
for (NSString *key in keys){
//循环所有键
indexOfKeys++;
int rowNum = indexOfKeys % ==? indexOfKeys/:indexOfKeys/ +;
int colNum = indexOfKeys % ==? :indexOfKeys %;
NSLog(@"index is:%d and row:%d,col:%d",indexOfKeys,rowNum,colNum);
//键样式
UIButton *keyView = [UIButton buttonWithType:UIButtonTypeCustom];
[keyboardView addSubview:keyView];
[keyView setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[keyView setTitle:key forState:UIControlStateNormal];
[keyView.layer setBorderWidth:];
[keyView.layer setBorderColor:[[UIColor blackColor]CGColor]];
[keyView.titleLabel setFont:[UIFont fontWithName:@"Arial-BoldItalicMT" size:]];
//键约束
[keyView mas_makeConstraints:^(MASConstraintMaker *make) {
//处理 合并单元格
if([key isEqualToString:@"0"] || [key isEqualToString:@"?"] ){
if([key isEqualToString:@"0"]){
[keyView mas_makeConstraints:^(MASConstraintMaker *make) {
make.height.equalTo(keyboardView.mas_height).with.multipliedBy(f);
make.width.equalTo(keyboardView.mas_width).multipliedBy();
make.left.equalTo(keyboardView.mas_left);
make.baseline.equalTo(keyboardView.mas_baseline).with.multipliedBy(f);
}];
}if([key isEqualToString:@"?"]){
[keyView removeFromSuperview];
}
}
//正常的单元格
else{
make.width.equalTo(keyboardView.mas_width).with.multipliedBy(f);
make.height.equalTo(keyboardView.mas_height).with.multipliedBy(f);
//按照行和列添加约束，这里添加行约束
switch (rowNum) {
case :
{
make.baseline.equalTo(keyboardView.mas_baseline).with.multipliedBy(f);
keyView.backgroundColor = [UIColor colorWithRed: green: blue: alpha:];
}
break;
case :
{
make.baseline.equalTo(keyboardView.mas_baseline).with.multipliedBy(f);
}
break;
case :
{
make.baseline.equalTo(keyboardView.mas_baseline).with.multipliedBy(f);
}
break;
case :
{
make.baseline.equalTo(keyboardView.mas_baseline).with.multipliedBy(f);
}
break;
case :
{
make.baseline.equalTo(keyboardView.mas_baseline).with.multipliedBy(f);
}
break;
default:
break;
}
//按照行和列添加约束，这里添加列约束
switch (colNum) {
case :
{
make.left.equalTo(keyboardView.mas_left);
}
break;
case :
{
make.right.equalTo(keyboardView.mas_centerX);
}
break;
case :
{
make.left.equalTo(keyboardView.mas_centerX);
}
break;
case :
{
make.right.equalTo(keyboardView.mas_right);
[keyView setBackgroundColor:[UIColor colorWithRed: green: blue: alpha:]];
}
break;
default:
break;
}
}
}];
}
}
本例子使用的baseline去控制高度位置，这似乎不是太准，如果想要精准控制高度位置，可以使用一行一行添加的方法，每次当前行的top去equelTo上一行的bottom。
给个提示：
for（遍历所有行)
for（遍历所以列）
//当前行约束根据上一行去设置
......
下一个例子中，使用上面类似的方法
Masonry高级使用例子2
根据设计图，使用masonry布局：
步骤1
步骤2
步骤1
-(void)createUI{
UIView *titleView = [UIView new];
titleView.backgroundColor = [UIColor redColor];
UIView *caredView = [UIView new];
[self.view addSubview:caredView];
UIView *brifeView = [UIView new];
[self.view addSubview:brifeView];
//self.view
self.view.backgroundColor = [UIColor colorWithWhite: alpha:];
//thrm
UIImageView *plantThrm = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"defalutPlantReferenceIcon"]];
[self.view addSubview:plantThrm];
[plantThrm mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.and.top.equalTo(self.view).with.offset();
}];
//title
[self.view addSubview:titleView];
UIImageView *bgTitleView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"bg-plant-reference-title"]];
[titleView addSubview:bgTitleView];
[titleView mas_makeConstraints:^(MASConstraintMaker *make) {
make.right.equalTo(self.view.mas_right);
make.left.equalTo(plantThrm.mas_right).with.offset();
make.centerY.equalTo(plantThrm.mas_centerY);
}];
[bgTitleView mas_makeConstraints:^(MASConstraintMaker *make) {
make.edges.equalTo(titleView);
}];
UILabel *title = [[UILabel alloc]init];
title.textColor = [UIColor whiteColor];
title.font = [UIFont fontWithName:@"Heiti SC" size:];
title.text = _reference.name;
[titleView addSubview:title];
[title mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(titleView.mas_left).offset();
make.width.equalTo(titleView.mas_width);
make.centerY.equalTo(titleView.mas_centerY);
}];
//植物养护
UILabel *caredTitle = [[UILabel alloc]init];
caredTitle.textColor = [UIColor colorWithRed: green: blue: alpha:];
caredTitle.font = [UIFont fontWithName:@"Heiti SC" size:];
caredTitle.text = @"植物养护";
[self.view addSubview:caredTitle];
[caredTitle mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(plantThrm.mas_bottom).with.offset();
make.left.and.right.equalTo(self.view).with.offset();
make.height.mas_equalTo();
}];
//将图层的边框设置为圆脚
caredView.layer.cornerRadius = ;
caredView.layer.masksToBounds = YES;
//给图层添加一个有色边框
caredView.layer.borderWidth = ;
caredView.layer.borderColor = [[UIColor colorWithWhite: alpha:] CGColor];
caredView.backgroundColor = [UIColor whiteColor];
[caredView mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(caredTitle.mas_bottom).with.offset();
make.left.equalTo(self.view.mas_left).with.offset();
make.right.equalTo(self.view.mas_right).with.offset(-);
make.height.equalTo(brifeView);
}];
//植物简介
UILabel *brifeTitle = [[UILabel alloc]init];
brifeTitle.textColor = [UIColor colorWithRed: green: blue: alpha:];
brifeTitle.font = [UIFont fontWithName:@"Heiti SC" size:];
brifeTitle.text = @"植物简介";
[self.view addSubview:brifeTitle];
[brifeTitle mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(caredView.mas_bottom).with.offset();
make.left.and.right.equalTo(self.view).with.offset();
make.height.mas_equalTo();
}];
//将图层的边框设置为圆脚
brifeView.layer.cornerRadius = ;
brifeView.layer.masksToBounds = YES;
//给图层添加一个有色边框
brifeView.layer.borderWidth = ;
brifeView.layer.borderColor = [[UIColor colorWithWhite: alpha:] CGColor];
brifeView.backgroundColor = [UIColor whiteColor];
[brifeView mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(brifeTitle.mas_bottom).with.offset();
make.left.equalTo(self.view.mas_left).with.offset();
make.right.equalTo(self.view.mas_right).with.offset(-);
make.bottom.equalTo(self.view.mas_bottom).with.offset(-);
make.height.equalTo(caredView);
}];
}
完成之后如下图 步骤1
步骤2,在上面的基础上，增加植物养护部分ui构造的代码，思想是，先构造出四行，然后根据每行单独构造出行样式。
//把块拆分为四行
-(void)createIndexUIWithView:(UIView *)view{
//拆分四行
UIView *row1 = [UIView new];
UIView *row2 = [UIView new];
UIView *row3 = [UIView new];
UIView *row4 = [UIView new];
[view addSubview:row1];
[view addSubview:row2];
[view addSubview:row3];
[view addSubview:row4];
[row1 mas_makeConstraints:^(MASConstraintMaker *make) {
make.right.and.left.equalTo(view);
make.height.equalTo(view.mas_height).multipliedBy();
make.top.equalTo(view.mas_top);
}];
[row2 mas_makeConstraints:^(MASConstraintMaker *make) {
make.right.and.left.equalTo(view);
make.top.equalTo(row1.mas_bottom);
make.height.equalTo(view.mas_height).multipliedBy();
}];
[row3 mas_makeConstraints:^(MASConstraintMaker *make) {
make.right.equalTo(view.mas_right);
make.top.equalTo(row2.mas_bottom);
make.height.equalTo(view.mas_height).multipliedBy();
make.left.equalTo(view.mas_left);
}];
[row4 mas_makeConstraints:^(MASConstraintMaker *make) {
make.right.and.left.equalTo(view);
make.top.equalTo(row3.mas_bottom);
make.height.equalTo(view.mas_height).multipliedBy();
}];
[self createIndexRowUI:PlantReferenceWaterIndex withUIView:row1];
[self createIndexRowUI:PlantReferenceSumIndex withUIView:row2];
[self createIndexRowUI:PlantReferenceTemperatureIndex withUIView:row3];
[self createIndexRowUI:PlantReferenceElectrolyteIndex withUIView:row4];
}
//构造每行的UI
-(void)createIndexRowUI:(PlantReferenceIndex) index withUIView:(UIView *)view{
//index标题
UILabel *indexTitle = [UILabel new];
indexTitle.font = [UIFont fontWithName:@"HeiTi SC" size:];
indexTitle.textColor = [UIColor colorWithWhite: alpha:];
[view addSubview:indexTitle];
[indexTitle mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(view.mas_left).with.offset();
make.centerY.equalTo(view.mas_centerY);
}];
switch (index) {
case PlantReferenceWaterIndex:
{
indexTitle.text = @"水分";
UIImageView * current;
for(int i=;i<=5;i++){
if(i<_reference.waterIndex){
current = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"icon_water_light"]];
}else{
current = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"icon_water_dark"]];
}
[view addSubview:current];
//间距%，左边留空%
[current mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(view.mas_right).with.multipliedBy(*(i-) +);
make.centerY.equalTo(view.mas_centerY);
}];
}
}
break;
case PlantReferenceSumIndex:
{
indexTitle.text = @"光照";
UIImageView * current;
for(int i=;i<=5;i++){
if(i<_reference.temperatureIndex){
current = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"icon_summer_light"]];
}else{
current = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"icon_summer_dark"]];
}
[view addSubview:current];
//间距%，左边留空%
[current mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(view.mas_right).with.multipliedBy(*(i-) +);
make.centerY.equalTo(view.mas_centerY);
}];
}
}
break;
case PlantReferenceTemperatureIndex:
{
indexTitle.text = @"温度";
UIImageView * current;
for(int i=;i<=5;i++){
if(i<_reference.sumIndex){
current = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"icon_temperature_light"]];
}else{
current = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"icon_temperature_dark"]];
}
[view addSubview:current];
//间距%，左边留空%
[current mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(view.mas_right).with.multipliedBy(*(i-) +);
make.centerY.equalTo(view.mas_centerY);
}];
}
}
break;
case PlantReferenceElectrolyteIndex:
{
indexTitle.text = @"肥料";
UIImageView * current;
for(int i=;i<=5;i++){
if(i<_reference.electrolyteIndex){
current = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"icon_electolyte_light"]];
}else{
current = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"icon_electolyte_dark"]];
}
[view addSubview:current];
//间距%，左边留空%
[current mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(view.mas_right).with.multipliedBy(*(i-) +);
make.centerY.equalTo(view.mas_centerY);
}];
}
}
break;
default:
break;
}
}
//在步骤createui的基础上，做了一些微调。
-(void)createUI{
self.title = _reference.name;
UIView *titleView = [UIView new];
UIView *caredView = [UIView new];
[self.view addSubview:caredView];
UITextView *brifeView = [UITextView new];
[self.view addSubview:brifeView];
//self.view
self.view.backgroundColor = [UIColor colorWithWhite: alpha:];
//thrm
UIImageView *plantThrm = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"defalutPlantReferenceIcon"]];
[self.view addSubview:plantThrm];
[plantThrm mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.and.top.equalTo(self.view).with.offset();
}];
//title
[self.view addSubview:titleView];
UIImageView *bgTitleView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"bg-plant-reference-title"]];
[titleView addSubview:bgTitleView];
[titleView mas_makeConstraints:^(MASConstraintMaker *make) {
make.right.equalTo(self.view.mas_right);
make.left.equalTo(plantThrm.mas_right).with.offset();
make.centerY.equalTo(plantThrm.mas_centerY);
}];
[bgTitleView mas_makeConstraints:^(MASConstraintMaker *make) {
make.edges.equalTo(titleView);
}];
UILabel *title = [[UILabel alloc]init];
title.textColor = [UIColor whiteColor];
title.font = [UIFont fontWithName:@"Heiti SC" size:];
title.text = _reference.name;
[titleView addSubview:title];
[title mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(titleView.mas_left).offset();
make.width.equalTo(titleView.mas_width);
make.centerY.equalTo(titleView.mas_centerY);
}];
//植物养护
UILabel *caredTitle = [[UILabel alloc]init];
caredTitle.textColor = [UIColor colorWithRed: green: blue: alpha:];
caredTitle.font = [UIFont fontWithName:@"Heiti SC" size:];
caredTitle.text = @"植物养护";
[self.view addSubview:caredTitle];
[caredTitle mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(plantThrm.mas_bottom).with.offset();
make.left.and.right.equalTo(self.view).with.offset();
make.height.mas_equalTo();
}];
//植物养护 数据
[self createIndexUIWithView:caredView];
//将图层的边框设置为圆脚
caredView.layer.cornerRadius = ;
caredView.layer.masksToBounds = YES;
//给图层添加一个有色边框
caredView.layer.borderWidth = ;
caredView.layer.borderColor = [[UIColor colorWithWhite: alpha:] CGColor];
caredView.backgroundColor = [UIColor whiteColor];
[caredView mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(caredTitle.mas_bottom).with.offset();
make.left.equalTo(self.view.mas_left).with.offset();
make.right.equalTo(self.view.mas_right).with.offset(-);
make.height.equalTo(brifeView);
}];
//植物简介
UILabel *brifeTitle = [[UILabel alloc]init];
brifeTitle.textColor = [UIColor colorWithRed: green: blue: alpha:];
brifeTitle.font = [UIFont fontWithName:@"Heiti SC" size:];
brifeTitle.text = @"植物简介";
[self.view addSubview:brifeTitle];
[brifeTitle mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(caredView.mas_bottom).with.offset();
make.left.and.right.equalTo(self.view).with.offset();
make.height.mas_equalTo();
}];
//将图层的边框设置为圆脚
brifeView.layer.cornerRadius = ;
brifeView.layer.masksToBounds = YES;
//给图层添加一个有色边框
brifeView.layer.borderWidth = ;
brifeView.layer.borderColor = [[UIColor colorWithWhite: alpha:] CGColor];
brifeView.backgroundColor = [UIColor whiteColor];
//文字样式
// brifeView.textColor = [UIColor colorWithWhite: alpha:];
// brifeView.font = [UIFont fontWithName:@"HeiTi SC" size:];
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc]init];
paragraphStyle.lineHeightMultiple = f;
paragraphStyle.maximumLineHeight = f;
paragraphStyle.minimumLineHeight = f;
paragraphStyle.alignment = NSTextAlignmentJustified;
NSDictionary *attributes = @{ NSFontAttributeName:[UIFont systemFontOfSize:], NSParagraphStyleAttributeName:paragraphStyle, NSForegroundColorAttributeName:[UIColor colorWithWhite: alpha:]};
//植物简介数据
//brifeView.text = _reference.brief;
brifeView.attributedText = [[NSAttributedString alloc] initWithString: _reference.brief attributes:attributes];
[brifeView mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(brifeTitle.mas_bottom).with.offset();
make.left.equalTo(self.view.mas_left).with.offset();
make.right.equalTo(self.view.mas_right).with.offset(-);
make.bottom.equalTo(self.view.mas_bottom).with.offset(-);
make.height.equalTo(caredView);
}];
}
完成之后如下图 步骤2