例如,我通过snapkit为UIView声明了一些约束:
timeProgress.snp_makeConstraints { (make) in
make.left.equalTo(startTime.snp_right).offset(15)
make.right.equalTo(endTime.snp_left).offset(-15)
make.height.equalTo(5)
make.centerY.equalTo(startTime)
}
如何获得timeProgress的高度约束?
答案 0 :(得分:3)
您可以保留对高度限制的引用:
var timeHeightConstraint: Constraint
timeProgress.snp_makeConstraints { (make) in
make.left.equalTo(startTime.snp_right).offset(15)
make.right.equalTo(endTime.snp_left).offset(-15)
self.timeHeightConstraint = make.height.equalTo(5).constraint
make.centerY.equalTo(startTime)
}
答案 1 :(得分:2)
您需要保留对约束的全局引用。
let timeProgressHeightConstant = 5.0
timeProgress.snp_makeConstraints { (make) in
make.left.equalTo(startTime.snp_right).offset(15)
make.right.equalTo(endTime.snp_left).offset(-15)
make.height.equalTo(timeProgressHeightConstant)
make.centerY.equalTo(startTime)
}
因此,您现在可以访问self.timeProgressHeightConstant
。