Obj-c to Swift conversion question
The more I stretch to Swift goals, the more I learn. However I've come upon a little thing where I am translating code into Swift and quickly stumbled. *Obj-C:* NSValue *keyboardEndFrameValue = [[notification userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey]; *Swift (the closest I've come):* var keyboardEndFrameValue = NSValue(notification.userInfo[UIKeyboardFrameEndUserInfoKey]) Error for Swift: insert nonretainedObject: When I Fix-It with the above suggestion, the error becomes Cannot subscript a value of type '[NSObject: AnyObject]?' with an index of type 'String' So I then end up with this (but it looks really strange): var keyboardEndFrameValue = NSValue(nonretainedObject: notification.userInfo[UIKeyboardFrameEndUserInfoKey as String]) No warnings or errors, but I wanted to check to see if I'm appeasing the compiler but have it wrong. Thanks, Eric ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Obj-c to Swift conversion question
Le 28 juil. 2015 à 16:03, Eric E. Dolecki edole...@gmail.com a écrit : The more I stretch to Swift goals, the more I learn. However I've come upon a little thing where I am translating code into Swift and quickly stumbled. *Obj-C:* NSValue *keyboardEndFrameValue = [[notification userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey]; *Swift (the closest I've come):* var keyboardEndFrameValue = NSValue(notification.userInfo[UIKeyboardFrameEndUserInfoKey]) NSValue() is not a cast, it is a constructor. Should be something like var keyboardEndFrameValue = notification.userInfo[UIKeyboardFrameEndUserInfoKey] as NSValue Error for Swift: insert nonretainedObject: When I Fix-It with the above suggestion, the error becomes Cannot subscript a value of type '[NSObject: AnyObject]?' with an index of type 'String' So I then end up with this (but it looks really strange): var keyboardEndFrameValue = NSValue(nonretainedObject: notification.userInfo[UIKeyboardFrameEndUserInfoKey as String]) No warnings or errors, but I wanted to check to see if I'm appeasing the compiler but have it wrong. Thanks, Eric ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/mailing%40xenonium.com This email sent to mail...@xenonium.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Obj-c to Swift conversion question
Yes, thanks. I ended up with this (yes, I like to use Void):
func keyboardWillShow(notification:NSNotification) - Void
{
let userInfo = notification.userInfo!
let keyboardEndFrame = (userInfo[UIKeyboardFrameEndUserInfoKey] as!
NSValue).CGRectValue()
let animDuration =
(userInfo[UIKeyboardAnimationDurationUserInfoKey] as! NSNumber).doubleValue
UIView.animateWithDuration(animDuration, delay: 0.0, options:
UIViewAnimationOptions.CurveEaseOut, animations: {
var textFieldFrame = self.ipField.frame
textFieldFrame.origin.y = keyboardEndFrame.origin.y -
textFieldFrame.size.height
self.ipField.frame = textFieldFrame;
}, completion: { _ in
println(move complete.)
})
}
On Tue, Jul 28, 2015 at 11:35 AM Jean-Daniel Dupas mail...@xenonium.com
wrote:
Le 28 juil. 2015 à 16:03, Eric E. Dolecki edole...@gmail.com a écrit :
The more I stretch to Swift goals, the more I learn. However I've come
upon
a little thing where I am translating code into Swift and quickly
stumbled.
*Obj-C:*
NSValue *keyboardEndFrameValue = [[notification userInfo]
objectForKey:UIKeyboardFrameEndUserInfoKey];
*Swift (the closest I've come):*
var keyboardEndFrameValue =
NSValue(notification.userInfo[UIKeyboardFrameEndUserInfoKey])
NSValue() is not a cast, it is a constructor.
Should be something like
var keyboardEndFrameValue =
notification.userInfo[UIKeyboardFrameEndUserInfoKey] as NSValue
Error for Swift: insert nonretainedObject:
When I Fix-It with the above suggestion, the error becomes Cannot
subscript a value of type '[NSObject: AnyObject]?' with an index of type
'String'
So I then end up with this (but it looks really strange):
var keyboardEndFrameValue = NSValue(nonretainedObject:
notification.userInfo[UIKeyboardFrameEndUserInfoKey as String])
No warnings or errors, but I wanted to check to see if I'm appeasing the
compiler but have it wrong.
Thanks,
Eric
___
Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
https://lists.apple.com/mailman/options/cocoa-dev/mailing%40xenonium.com
This email sent to mail...@xenonium.com
___
Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com
This email sent to arch...@mail-archive.com
