带有标签栏和导航栏的滚动视图自动布局

Question

I need to set constraints in uiscrollview in viewcontroller containing navigationbar and tabbar.I have placed a uiview(contentView) inside scrollview which is of same height as of scrollview.These are the things which I have set curently,

1. set 4 constraints for scrollview(top,bottom,left,right) with constraints to margin unchecked which is 0 for all edges.
2. set 4 constraints for uiview(contentView) inside scrollview(top,bottom,left,right) with constraints to margin unchecked which is 0 for all edges.
3. set equal width and equal height for scrollview and UIView(contentView)

output is displaying like this uiview(contentView) gets placed lower about 64 px (approx).This view should not place like this.Can anyone help me to solve this.

Here is the project demo which I have worked and can be downloaded here

Answer 1

Select the scene and in the attributes inspector, uncheck: "Under Top Bars" and "Under Bottom Bars".

Then in the storyboard make the scroll view start at the very top of the View Controller, where the navigation bar starts, and then the UIView, where the navigation Bar ends.

Later, select the Scroll View and set the constraints as they come by default.

I guess it's not the cleanest way to do it but I had the same issue and worked for me.

Answer 2

您可以尝试self.automaticallyAdjustsScrollViewInsets = false

Answer 3

The Tab Bar has to be set in the tree UNDER the scrollView, like this:

Answer 4

Try this

override func viewDidLoad() {
    self.edgesForExtendedLayout = UIRectEdge()
    self.extendedLayoutIncludesOpaqueBars = false

}

Answer 5

我找到了解决方案，将父 ViewController 类设置为顶栏下方并禁用它并相应地更改了父级中的框架并将相同的属性和框架设置为子视图控制器修复了该问题。