【发布时间】：2016-07-07 11:21:42
【问题描述】：
我正在使用SnapKit 为图片添加约束我有一个 UIViewController
我有这个代码：
imagenPrincipal.contentMode = .ScaleToFill
let URL = NSURL(string: oferta!.imagen)!
let placeholderImage = UIImage(named: "placeholder")!
imagenPrincipal.sd_setImageWithURL(URL, placeholderImage: placeholderImage, completed: nil)
let altoNuevo = 120.0
let anchoNuevo = 230.0
print(imagenPrincipal.frame.size.height)//->140.0
imagenPrincipal.frame.size.height = CGFloat(altoNuevo)
print(imagenPrincipal.frame.size.height)//->120.0
imagenPrincipal.snp_makeConstraints { (make) -> Void in
make.center.equalTo(self.view)
make.height.equalTo(imagenPrincipal.frame.size.height)
}
问题是我没有将图像调整为我想要的大小，并且控制台向我显示了这个错误：
2016-07-07 13:12:44.652 TestApp[12517:197564] Unable to simultaneously satisfy constraints.
Probably at least one of the constraints in the following list is one you don't want.
Try this:
(1) look at each constraint and try to figure out which you don't expect;
(2) find the code that added the unwanted constraint or constraints and fix it.
(
"<_UILayoutSupportConstraint:0x7f84297c21d0 V:[_UILayoutGuide:0x7f84295427b0(0)]>",
"<_UILayoutSupportConstraint:0x7f84297c3af0 V:|-(0)-[_UILayoutGuide:0x7f84295427b0] (Names: '|':UIView:0x7f84295e36b0 )>",
"<NSLayoutConstraint:0x7f8429719520 V:[_UILayoutGuide:0x7f84295427b0]-(5)-[UIImageView:0x7f84297789e0]>",
"<SnapKit.LayoutConstraint:0x7f8429792d10@/Users/usuario/Swift/TestApp/TestAppV1/TestViewController.swift#62 UIImageView:0x7f84297789e0.centerY == UIView:0x7f84295e36b0.centerY>",
"<SnapKit.LayoutConstraint:0x7f84297119d0@/Users/usuario/Swift/TestApp/TestAppV1/TestViewController.swift#62 UIImageView:0x7f84297789e0.height == 50.0>",
"<NSLayoutConstraint:0x7f84295f9480 'UIView-Encapsulated-Layout-Height' V:[UIView:0x7f84295e36b0(568)]>"
)
Will attempt to recover by breaking constraint
<SnapKit.LayoutConstraint:0x7f84297119d0@/Users/usuario/Swift/TestApp/TestAppV1/TestViewController.swift#62 UIImageView:0x7f84297789e0.height == 50.0>
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
任何可能的解决方案？
我使用另一个库进行约束？？
谢谢！
【问题讨论】：
标签： swift constraints snapkit