Ios swift 2.1无法将anyobject类型的值转换为预期的参数类型nslayoutconstraint

现在我正在使用swift 2.1，但我已经在swift 2.0上创建了我的项目，我的代码正在使用swift 2.0，但当我尝试使用最新的swift进行代码转换时，我无法理解如何转换，请给我解决方案

   var header_constraint_H_Format = ""
            var header_constraint_V_Format = ""
            var bubble_constraint_H_Format = ""
            var bubble_constraint_V_Format = ""
            var content_constraint_H_Format = ""
            var content_constraint_V_Format = ""


            if message?.role == Role.Sender {
                header_constraint_H_Format =  "[header(50)]-5-|"
                header_constraint_V_Format =  "V:|-5-[header(50)]"
                bubble_constraint_H_Format  =  "|-(>=5)-[bubble]-10-[header]"
                bubble_constraint_V_Format  =  "V:|-5-[bubble(>=50)]-5-|"
                content_constraint_H_Format  =  "|-(>=5)-[content]-25-|"
                content_constraint_V_Format  =  "V:|[content]-5-|"
            } else {
                header_constraint_H_Format =  "|-5-[header(50)]"
                header_constraint_V_Format =  "V:|-5-[header(50)]"
                bubble_constraint_H_Format  =  "[header]-10-[bubble]-(>=5)-|"
                bubble_constraint_V_Format  =  "V:|-5-[bubble(>=50)]-5-|"
                content_constraint_H_Format  =  "|-25-[content]-(>=5)-|"
                content_constraint_V_Format  =  "V:|[content]-5-|"
            }


            let header_constraint_H:NSArray = NSLayoutConstraint.constraintsWithVisualFormat(header_constraint_H_Format, options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: viewsDictionary)
            let header_constraint_V:NSArray = NSLayoutConstraint.constraintsWithVisualFormat(header_constraint_V_Format, options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: viewsDictionary)

            let bubble_constraint_H:NSArray = NSLayoutConstraint.constraintsWithVisualFormat(bubble_constraint_H_Format, options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: viewsDictionary)
            let bubble_constraint_V:NSArray = NSLayoutConstraint.constraintsWithVisualFormat(bubble_constraint_V_Format, options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: viewsDictionary)

            let content_constraint_H:NSArray = NSLayoutConstraint.constraintsWithVisualFormat(content_constraint_H_Format, options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: viewsDictionary)
            let content_constraint_V:NSArray = NSLayoutConstraint.constraintsWithVisualFormat(content_constraint_V_Format, options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: viewsDictionary)

            self.contentView.addConstraints(header_constraint_H as [AnyObject])
            self.contentView.addConstraints(header_constraint_V as [AnyObject])
            self.contentView.addConstraints(bubble_constraint_H as [AnyObject])
            self.contentView.addConstraints(bubble_constraint_V as [AnyObject])
            self.bubbleImgView.addConstraints(content_constraint_H as [AnyObject])
            self.bubbleImgView.addConstraints(content_constraint_V as [AnyObject]) 

---

使用

UIView

方法

.addConstraints

获取类型

NSLayoutConstraint

，而不是类型

AnyObject

UIView Class Reference:
func addConstraint(constraint: NSLayoutConstraint)

由于在对

.addConstraints（…）

的调用中将

NSLayoutConstraint

属性强制转换为

AnyObject

，因此尝试使用无效的参数类型调用后者

在调用

.addConstraints（…）

func addConstraints（u.constraints:[NSLayoutConstraint]）

是

NSLayoutConstraint

的数组的预期参数时，尝试删除

。因此，添加[AnyObject]是没有意义的

因此，不要设置NSArray类型，而是执行[NSLayoutConstraint]或简单地删除它

let header_constraint_H = NSLayoutConstraint.constraintsWithVisualFormat(header_constraint_H_Format, options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: viewsDictionary)

self.contentView.addConstraints(header_constraint_H)