I am trying to open a file using the QuickLook framework. All the resources I am finding online show how to open a file stored locally with quicklook, however, is it possible to open a file using a url link (which is not stored locally)?
In my attempts, I have failed. Here is what I've done:
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let file = fetchedResultsController.object(at: indexPath)
var fileToPreviewURL = "https://s3-us-west-1.amazonaws.com/powr/defaults/image-slider1.jpg"
let urlToCheck = NSURL(string: fileToPreviewURL)
if QLPreviewController.canPreview(urlToCheck) {
print("Can preview!")
quickLookController.currentPreviewItemIndex = 0
navigationController?.pushViewController(quickLookController, animated: true)
}else{
print("Cannot preview") //printing out this in console when run app
}
}
And my delegate methods:
extension TaskViewVC: QLPreviewControllerDataSource {
func numberOfPreviewItems(in controller: QLPreviewController) -> Int {
return 1
}
func previewController(_ controller: QLPreviewController, previewItemAt index: Int) -> QLPreviewItem {
let url = NSURL(string: "https://s3-us-west-1.amazonaws.com/powr/defaults/image-slider1.jpg")
return url!
}
}
I'm not sure why it QLPreviewController cannot preview the urlToCheck, which is a completely valid URL with an image.
