/**
* axisType 轴线方向
* fixedSpacing 间隔大小
* fixedItemLength 每个控件的固定长度/宽度
* leadSpacing 头部间隔
* tailSpacing 尾部间隔 * *///
1. 等间隔排列 - 多个控件间隔固定，控件长度/宽度变化
- (void)mas_distributeViewsAlongAxis:(MASAxisType)axisTypewithFixedSpacing:(CGFloat)fixedSpacing leadSpacing:(CGFloat)leadSpacingtailSpacing:(CGFloat)tailSpacing;//
2. 等间隔排列 - 多个固定大小固定，间隔空隙变化
- (void)mas_distributeViewsAlongAxis:(MASAxisType)axisTypewithFixedItemLength:(CGFloat)fixedItemLengthleadSpacing:(CGFloat)leadSpacingtailSpacing:(CGFloat)tailSpacing;
所以也就知道了, 将fixedSpacing, leadSpacing, tailSpacing都赋值同一个间距, 数组内的的View就会自动计算出宽度, 完成水平方向的布局.
要注意的是, 这个方法仅仅完成了水平方向的布局, 如果想确定这几个View的位置, 还需要指定竖直方向位置和高度, 这里可以用数组直接调用 mas_makeConstraints:^(MASConstraintMaker *make){} 完成布局.
代码示例：
UIView*backView=[UIView new];
backView.backgroundColor=[UIColor redColor];
[self.view addSubview:backView];
[backView mas_makeConstraints:^(MASConstraintMaker*make){
make.center.mas_equalTo(backView.center);
make.size.mas_equalTo(CGSizeMake(250,300));
}];
//水平排列//在backview里面放n个蓝色方块，宽度均为30, 间隙一样大,n大于2啊，就一个还等个毛线啊
intnum=4;
NSMutableArray*blueViews=[NSMutableArray array];
for(inti=0;i<num;i++){
UIView*blueView=[UIView new];
blueView.backgroundColor=[UIColor blueColor];
[backView addSubview:blueView];
[blueViews addObject:blueView];
}
CGFloat padding=(250-num*30)/(num+1);
[blueViews mas_distributeViewsAlongAxis:MASAxisTypeHorizontal withFixedItemLength:30leadSpacing:padding tailSpacing:padding];
[blueViews mas_makeConstraints:^(MASConstraintMaker*make){
make.centerY.equalTo(backView);
UIView*blueView=(UIView*)blueViews[0];
make.height.mas_equalTo(blueView.mas_width);
}];
//竖直排列NSMutableArray*yellowViews=[NSMutableArray array];
for(inti=0;i<num;i++){
UIView*yellowView=[UIView new];
yellowView.backgroundColor=[UIColor yellowColor];
[backView addSubview:yellowView];
[yellowViews addObject:yellowView];
}
[yellowViews mas_distributeViewsAlongAxis:MASAxisTypeVertical withFixedItemLength:30leadSpacing:padding tailSpacing:padding];
[yellowViews mas_makeConstraints:^(MASConstraintMaker*make){
make.centerX.mas_equalTo(backView.mas_centerX);
make.width.mas_equalTo(30);
}];
