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aintMaker *make) {
make.top.left.bottom.and.right.equalTo(verticalScrollView);
make.width.equalTo(verticalScrollView);#//垂直滚动宽度固定，这个很重要
}];
//过渡视图添加子视图
UIView *lastView =nil;
for (NSInteger index =0; index <10; index++) {
UILabel *label = [[UILabelalloc]init];
label.textAlignment =NSTextAlignmentCenter;
label.backgroundColor = [UIColorcolorWithHue:(arc4random() %256 / 256.0)
saturation:(arc4random() %128 /256.0) +0.5
brightness:(arc4random() %128 /256.0) +0.5
alpha:1];
label.text = [NSStringstringWithFormat:@"第 %ld个视图", index];
//添加到过渡视图，并设置子视图的约束
[verticalContainerView addSubview:label];
[label mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.and.right.equalTo(verticalContainerView);
make.height.mas_equalTo(verticalScrollView.mas_height);
if (lastView) {
make.top.mas_equalTo(lastView.mas_bottom);
}
else {
make.top.mas_equalTo(0);
}
}];
lastView = label;
}
#// 设置过渡视图的底边距（此设置将影响到scrollView的contentSize）这个也是关键的一步
[verticalContainerView mas_makeConstraints:^(MASConstraintMaker *make) {
make.bottom.equalTo(lastView.mas_bottom);
}];
xib对UIScrollerView的布局可以参考下面的文章
https://www.jianshu.com/p/1d3bb3cf7ee5
https://blog.csdn.net/dreams_deng/article/details/80523485
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