About iOS14 of PencilKit

Question

environment ・MacOS: 10.15.7 ・Xcode: 12.1 ・iOS: 14.1

I am trying to PencilKit and but I cannot show PKToolPicker. I set my code as below:

enter image description here

if let window = UIApplication.shared.windows.first {
    if let toolPicker = PKToolPicker.shared(for: window) {
        toolPicker.addObserver(canvas)
        toolPicker.setVisible(true, forFirstResponder: canvas)
        canvas.becomeFirstResponder()
    }
}

I get a warning here:

'shared(for:)' was deprecated in iOS 14.0: Create individual instances instead.

So I changed it like this

let toolPicker = PKToolPicker.init()
toolPicker.addObserver(canvas)
toolPicker.setVisible(true, forFirstResponder: canvas)
canvas.becomeFirstResponder()

enter image description here

After all the PKToolPicker is not displayed

enter image description here

I am aiming to display such PKToolPicker

Please give me advice

score 1 · Answer 1 · edited Oct 27 '21 at 11:05

1

First declare an individual instance of the toolPicker for the ViewController at the class level. This is required to be able to change pens in the toolPicker:

let toolPicker = PKToolPicker()

Then later, in viewWillAppear(_ :)

toolPicker.addObserver(canvas)
toolPicker.setVisible(true, forFirstResponder: canvas)
canvas.becomeFirstResponder()

edited Oct 27 '21 at 11:05

manicaesar

5,024
3
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answered Aug 10 '21 at 04:56

vmanjz

1,156
1
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score 0 · Accepted Answer · answered Nov 19 '20 at 09:45

0

I solved it like this

toolPicker.addObserver(canvas)
toolPicker.setVisible(true, forFirstResponder: canvas)
canvas.becomeFirstResponder()

answered Nov 19 '20 at 09:45

おにぎりZ

21
3

1

couldn't see any difference between ur old code and new code. !! Can you please elaborate clearly so that it will be easy for others to understand. – Dayanithi Natarajan Jul 24 '21 at 04:44
@DayaKevin Add an individual instance of the toolPicker to the ViewController: ** let toolPicker = PKToolPicker.init() ** – vmanjz Aug 10 '21 at 04:53
@vmanjz As per the guidelines, I've added individual instance of the tool picker. Still no luck. Please find my code on this link https://stackoverflow.com/questions/68501442/ios-pencilkit-not-drawing-on-the-pkcanvasview – Dayanithi Natarajan Aug 10 '21 at 04:56
@DayaKevin Instead of declaring a constant toolPicker in the function, declare it just below the IBOutlet near the top! Cheers! – vmanjz Aug 10 '21 at 04:59

About iOS14 of PencilKit

2 Answers2