ios - 从 WKPickerInterface 获取选中的索引

Question

我可以让WKInterfacePicker调用pickerDidSettle，但是我怎样才能得到选中项的索引呢？

@IBAction override func pickerDidSettle(picker: WKInterfacePicker) {
    print("Picker settled to index: \(picker)")
}

Answer 1

Each time the picker value changes, the WKInterfacePicker object reports the change to its associated action method. The format of this action method is as follows:

OBJECTIVE-C

-(IBAction)pickerAction:(NSInteger)index

SWIFT @IBAction func pickerAction(index: Int)

You can use the action method’s index value to obtain the selected item from the array of items you used to configure the picker. The picker reports every change to its action method, regardless of how fast the user turns the Digital Crown. If your app should respond only to the item that the user selected, use the pickerDidSettle: method of WKInterfaceController to get the selected item instead.

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