UIStackView上手教程

https://www.jianshu.com/p/19fbf3ee2840

https://www.cnblogs.com/bokeyuanlibin/p/5693575.html

https://www.cnblogs.com/breezemist/p/5776552.html

对于宽度不一致的SubViews ,需要用约束控制其自定义的宽度or高度 ，可以用masonry

例子：

UIStackView *stackContainerView = [[UIStackView alloc] init];

self.stackContainerView = stackContainerView;

stackContainerView.axis = UILayoutConstraintAxisHorizontal;

stackContainerView.spacing = 4 ;

stackContainerView.alignment = UIStackViewAlignmentFill;

stackContainerView.distribution = UIStackViewDistributionEqualSpacing;

[self.contentView addSubview:stackContainerView];

CGFloat stackViewWidth = 0;

//    创建标签view

for (int i = 0; i < self.recommendModel.marketing.count; i ++) {

NSString *tagKey = self.recommendModel.marketing[i];

MZTagView *tagview = [[MZTagView alloc] initWithTagKey:tagKey];

[stackContainerView addArrangedSubview:tagview];

[tagview mas_makeConstraints:^(MASConstraintMaker *make) {

make.centerY.equalTo(stackContainerView);

make.width.mas_equalTo(tagview.tagViewWidth);

make.height.mas_equalTo( 20 *MZ_RATE);

}];

stackViewWidth += tagview.tagViewWidth;

}

stackViewWidth += (self.recommendModel.marketing.count-1)*4;

[stackContainerView mas_makeConstraints:^(MASConstraintMaker *make) {

make.centerY.equalTo(self.avatorView);

make.width.mas_equalTo(stackViewWidth);

make.height.mas_equalTo(20 );

make.right.equalTo(self.contentView).offset(-16);

}];