在IOS10 Widget中以编程方式更改NCWidgetDisplayMode

问题描述：

我希望以编程方式更改今天扩展的高度。由于iOS10 SDSK引入了 NCWidgetDisplayMode 我试图用它来以编程方式更改我的 preferredContentSize 的高度。

I am looking to programmatically change the height of a today extension. As the iOS10 SDSK introduced NCWidgetDisplayMode I am trying to use it to programmatically change the height of my preferredContentSize.

我已实施 widgetActiveDisplayModeDidChange ：

@available(iOSApplicationExtension 10.0, *)
func widgetActiveDisplayModeDidChange(activeDisplayMode: NCWidgetDisplayMode, withMaximumSize maxSize: CGSize) {
    if (activeDisplayMode == NCWidgetDisplayMode.Compact) {
        self.preferredContentSize = maxSize
    }
    else {
        self.preferredContentSize = CGSize(width: maxSize.width, height: 280)
    }
}

当按下 UIButton 时，我想要小部件高度扩展：

I want the widget height to expand when a UIButton is pressed :

@IBAction func multiplybyonethousand (sender: AnyObject) {

    if self.extensionContext?.widgetActiveDisplayMode == NCWidgetDisplayMode.Compact {

        self.widgetActiveDisplayModeDidChange(.Expanded, withMaximumSize: CGSizeMake(0, 300))
    }
}

然而，当我运行我的代码时，今天扩展的高度不会改变，控制台会给我以下错误：

However when I run my code, the height of the today extension does not change and the console gives me the following error:

2016-11-05 14:24:29.425697 todayextension[28590:7222420] No active animation block!

我试图在一个内部调用 widgetActiveDisplayModeDidChange 动画块：

I have tried to call widgetActiveDisplayModeDidChange inside an animation block:

@IBAction func multiplybyonethousand (sender: AnyObject) {
        if self.extensionContext?.widgetActiveDisplayMode == NCWidgetDisplayMode.Compact {
            UIView.animateWithDuration(0.2, delay: 0, options: .CurveLinear, animations: { () -> Void in
                self.widgetActiveDisplayModeDidChange(.Expanded, withMaximumSize: CGSizeMake(0, 300))

            }) { (completed) -> Void in
             //Do Stuff
            }
        }
}

但我仍然得到没有活动动画块！错误消息。有没有办法以编程方式在iOS10中扩展今天的扩展视图？

But I still get the No active animation block! error message. Is there a way to programmatically expand a today extension view in iOS10 ?

答

在 iOS 10中，显示更多/显示更少按钮会自动提供在今天的扩展中。因此小部件的高度是通过 NCWidgetDisplayMode 自动处理的。您无需提供任何显式按钮来处理小部件的高度。

In iOS 10, Show More/Show Less button is automatically provided in the Today's Extension. So height of the widget is handled automatically through NCWidgetDisplayMode. You don't need to provide any explicit button for handling the widget's height.

override func viewDidLoad() {
    super.viewDidLoad()

    if #available(iOSApplicationExtension 10.0, *) {
        self.extensionContext?.widgetLargestAvailableDisplayMode = .expanded
    }
}

实施 NCWidgetProviding 协议的方法：

@available(iOSApplicationExtension 10.0, *)
func widgetActiveDisplayModeDidChange(_ activeDisplayMode: NCWidgetDisplayMode, withMaximumSize maxSize: CGSize) {
    if activeDisplayMode == .expanded {
            preferredContentSize = CGSize(width: maxSize.width, height: 300)
    } else {
        preferredContentSize = maxSize
    }
}

In， iOS 8 和 iOS 9 ，你需要显式处理小部件的高度。在 iOS 10 中，它不是必需的。

In, iOS 8 and iOS 9, you need to explicitly handle widget's height. In iOS 10, it is not required.

您可以参考今天的小工具 github.com/pgpt10/Today-Widgetrel =nofollow noreferrer> https://github.com/pgpt10/Today-Widget 在 iOS 8 ， iOS 9 和 iOS 10 中实施。

You can refer to https://github.com/pgpt10/Today-Widget on Today's Widget implementation in iOS 8, iOS 9 and iOS 10.

在IOS10 Widget中以编程方式更改NCWidgetDisplayMode

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