How to create custom view programmatically in swift having controls text field button etc

Question

I am trying to access the MyCustomView from another class using the following code in ViewController swift     var view   MyCustomView frame  CGRectZero       in the viewDidLoad method  The problem is the view does not get initialized in the simulator   I have already set class in storyboard for the current ViewController   class MyCustomView  UIView       var label  UILabel   UILabel       var myNames     dipen   laxu   anis   aakash   santosh   raaa   ggdds   house        override init            super init              override init frame  CGRect            super init frame  frame          self addCustomView              required init coder aDecoder  NSCoder            fatalError  init coder   has not been implemented              func addCustomView             label frame   CGRectMake 50  10  200  100          label backgroundColor UIColor whiteColor           label textAlignment   NSTextAlignment Center         label text    test label          label hidden true         self addSubview label           var btn  UIButton   UIButton           btn frame CGRectMake 50  120  200  100          btn backgroundColor UIColor redColor           btn setTitle  button   forState  UIControlState Normal          btn addTarget self  action   changeLabel   forControlEvents  UIControlEvents TouchUpInside          self addSubview btn           var txtField   UITextField   UITextField           txtField frame   CGRectMake 50  250  100 50          txtField backgroundColor   UIColor grayColor           self addSubview txtField

User · Accepted Answer

The CGRectZero constant is equal to a rectangle at position  0 0  with zero width and height  This is fine to use  and actually preferred  if you use AutoLayout  since AutoLayout will then properly place the view   But  I expect you do not use AutoLayout  So the most simple solution is to specify the size of the custom view by providing a frame explicitly   customView   MyCustomView frame  CGRect x  0  y  0  width  200  height  50   self view addSubview customView    Note that you also need to use addSubview otherwise your view is not added to the view hierarchy

User · Answer

Swift 3   Swift 4 Update   let screenSize  CGRect   UIScreen main bounds let myView   UIView frame  CGRect x  0  y  0  width  screenSize width - 10  height  10   self view addSubview myView

User · Answer

var customView   UIView      IBAction func drawView   sender  AnyObject         customView frame   CGRect init x  0  y  0  width  100  height  200      customView backgroundColor   UIColor black       give color to the view      customView center   self view center       self view addSubview customView

User · Answer

let viewDemo   UIView   viewDemo frame   CGRect x  50  y  50  width  50  height  50  self view addSubview viewDemo

User · Answer

view   MyCustomView frame  CGRectZero    In this line you are trying to set empty rect for your custom view  That s why you cant see your view in simulator

[ios] How to create custom view programmatically in swift having controls text field, button etc

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