Unable to Tap Days in iOS 14 inline DatePicker

Just had the same issue, my calendar worked fine initially and eventually stopped working, the UIDatePicker was inside a UIView added through storyboard inside The main View.

Everything worked fine and I could click on the month and year and swipe months left and right. But when trying to click on a day nothing would happen. A new selection could not be made.

In my case reason behind it was adding a tapGesture to my main view for hiding keyboard. This made the calendar days unselectable.

(https://i.stack.imgur.com/k4AKF.jpg)

I had the same issue, and on my side was a problem with how I was adding the picker inside of the cell.

Check you are doing self.contentView addSubview: not self addSubview.

I had the same issue. In my case problem was in UITapGestureRecognizer, which I've add to hide keyboard.

This code fixed my problem:

tapGesture.cancelsTouchesInView = false

Ok I found a work around to seemingly allow a tap gesture on the background view and still have the calendar working; the idea is to add 4 rectangular views around the calendar view and add your tap gesture to those 4 views.

Add a picker background view (I called mine datePickerBGView) to your main view and then add your UIDatePicker (I called mine picker) to this background view and assign the same center point to both views:

picker.center = datePickerBGView.center

Then call this function:

func addDismissGesture() {
    
    //Work around because with the .inline date picker style tap gestures on the background view interfere with the day selection action on the picker's calendar view
    let leftDismissActionTap = UITapGestureRecognizer(target: self, action: #selector(dismissCalendar))
    let rightDismissActionTap = UITapGestureRecognizer(target: self, action: #selector(dismissCalendar))
    let topDismissActionTap = UITapGestureRecognizer(target: self, action: #selector(dismissCalendar))
    let bottomDismissActionTap = UITapGestureRecognizer(target: self, action: #selector(dismissCalendar))
    let leftDismissArea = UIView()
    let rightDismissArea = UIView()
    let topDismissArea = UIView()
    let bottomDismissArea = UIView()

    leftDismissArea.frame = CGRect(x: 0, y: 0, width: picker.frame.minX - view.frame.minX, height: view.frame.height)
    rightDismissArea.frame = CGRect(x: picker.frame.maxX, y: 0, width: view.frame.maxX - picker.frame.maxX, height: view.frame.height)
    topDismissArea.frame = CGRect(x: leftDismissArea.frame.maxX, y: 0, width: rightDismissArea.frame.minX - leftDismissArea.frame.maxX, height: picker.frame.minY - view.frame.minY)
    bottomDismissArea.frame = CGRect(x: leftDismissArea.frame.maxX, y: picker.frame.maxY, width:rightDismissArea.frame.minX - leftDismissArea.frame.maxX, height:  view.frame.maxY - picker.frame.maxY)
    
    datePickerBGView.addSubview(leftDismissArea)
    datePickerBGView.addSubview(rightDismissArea)
    datePickerBGView.addSubview(topDismissArea)
    datePickerBGView.addSubview(bottomDismissArea)
    
    leftDismissArea.addGestureRecognizer(leftDismissActionTap)
    rightDismissArea.addGestureRecognizer(rightDismissActionTap)
    topDismissArea.addGestureRecognizer(topDismissActionTap)
    bottomDismissArea.addGestureRecognizer(bottomDismissActionTap)
    
    leftDismissArea.backgroundColor = UIColor.black.withAlphaComponent(0.3)
    rightDismissArea.backgroundColor = UIColor.black.withAlphaComponent(0.3)
    topDismissArea.backgroundColor = UIColor.black.withAlphaComponent(0.3)
    bottomDismissArea.backgroundColor = UIColor.black.withAlphaComponent(0.3)
    
    datePickerBGView.bringSubviewToFront(picker)
}

In my case, I have a popup datepickerView with a mask in the background, and I want the datepickerView to disappear when I click background. So I added UITapGestureRecognizer in the background. I can't select the date in the datepicker after adding the gesture

Thanks to @Сергій Насінник, This code fixed my problem:

tapGesture.cancelsTouchesInView = false

import UIKit
import SnapKit

class PopUpDatePickerView: UIView {
    
    let contentView = UIView()
    let datePicker = UIDatePicker()
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        backgroundColor = .black.withAlphaComponent(0.4)
        
        
        contentView.backgroundColor = .white
        contentView.layer.cornerRadius = 16
        addSubview(contentView)
        contentView.snp.makeConstraints { make in
            make.bottom.equalTo(self.safeAreaLayoutGuide).offset(-10)
            make.left.right.equalToSuperview().inset(5)
        }
        
        datePicker.tintColor = .black
        contentView.addSubview(datePicker)
        datePicker.snp.makeConstraints { make in
            make.edges.equalToSuperview().inset(20)
        }
        
        if #available(iOS 14.0, *) {
            datePicker.preferredDatePickerStyle = .inline
        }
        
        let tapGesture = UITapGestureRecognizer(target: self, action: #selector(tapHandler(_:)))
        tapGesture.cancelsTouchesInView = false
        addGestureRecognizer(tapGesture)
        
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    @objc func tapHandler(_ sender: UITapGestureRecognizer) {
        guard
            !self.contentView.frame.contains(sender.location(in: self))  else {
            return
        }
        removeFromSuperview()
    }
}