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swiftsnapkit

How to get the height constraint declared by snapkit for UIView?

For example, I declare some constraints through snapkit for a UIView:

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)
}

How can I get the height constraint for the timeProgress?

Solution

  • You need to keep a global reference to the constraint.

    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)
}

    Hence, you could now access self.timeProgressHeightConstant.