Refresh Today Widget every time opened : <p>I thought that Today View every time when i open it it calls "viewWillAppear" but its not. When i change something in my app, and then I slide down for Today View it sometimes refresh the view and sometimes not.</p>

<p>I do all logic in viewWillAppear (fetch data from coreData and put that data to labels), but its not called everytime.</p>

<pre><code>override func viewWillAppear(animated: Bool) {
    super.viewWillAppear(animated)
    fetchContent()
    setLabels()
    setContentHeight()
    tableView.reloadData()
    print("view will appear")
}
</code></pre>

<p>how to call fetchContent and setLabels every time when user opens Today Extensions?</p>
