iOS10でウィジェットのデザインが崩れる問題の対処法

self.extensionContext?.widgetLargestAvailableDisplayMode = NCWidgetDisplayMode.Expanded

func widgetActiveDisplayModeDidChange(_ activeDisplayMode: NCWidgetDisplayMÓode, withMaximumSize maxSize: CGSize) {
    if (activeDisplayMode == NCWidgetDisplayMode.compact) {
        self.preferredContentSize = maxSize;
    }
    else {
        self.preferredContentSize = CGSize(width: 0, height: 200);
    }
}

[self.extensionContext setWidgetLargestAvailableDisplayMode:NCWidgetDisplayModeExpanded];

- (void)widgetActiveDisplayModeDidChange:(NCWidgetDisplayMode)activeDisplayMode
                         withMaximumSize:-(CGSize)maxSize
{
    if (activeDisplayMode == NCWidgetDisplayModeCompact) {
        self.preferredContentSize = maxSize;
    }
    else {
        self.preferredContentSize = CGSizeMake(0, 200);
    }
}