SFSafariViewController: how to provide custom activities? - ios

Question

The WWDC session of Safari View Controller mentioned that apps could provide custom activities through the method func safariViewController(controller: SFSafariViewController, activityItemsForURL URL: NSURL, title: String?) -> [UIActivity] of the delegate SFSafariViewControllerDelegate. I have tried to implement this method, but it is not called after I present the SFSafariViewCntroller. I also implemented another optional method of that delegate, func safariViewControllerDidFinish(_: SFSafariViewController), which does get called. I tried to add the "#objc" keyword to my method (required by some other protocols), but it seems not to change anything.
I am wondering what could go wrong.
Thanks!

Answer 1

Here's the example code for your reference. In your main view:
func safariViewController(controler: SFSafariViewController, activityItemsForURL: NSURL, title: String?) -> [UIActivity] {
//global variable for the url to be shared
webPageUrl = activityItemsForURL.absoluteString
//global variable for the title to be shared
webPageTitle = title!
let wcActivity = WeChatActivity()
let wcMoment = WeChatMoment()
return [wcActivity, wcMoment]
}
Custom activities 1
import UIKit
class WeChatActivity : UIActivity{
override init() {
self.text = ""
}
var text:String?
override func activityType()-> String {
return "WeChat"
}
override func activityImage()-> UIImage?
{
return UIImage(named: "WeChat")!
}
override func activityTitle() -> String
{
return "微信好友"
}
override class func activityCategory() -> UIActivityCategory{
return UIActivityCategory.Action
//you can change to .Share and it'll appear in the share line
}
func getURLFromMessage(message:String)-> NSURL
{
var url = "whatsapp://"
if (message != "")
{
url = "\(url)send?text=\(message)"
}
return NSURL(string: url)!
}
override func canPerformWithActivityItems(activityItems: [AnyObject]) -> Bool {
return true;
}
override func performActivity() {
shareToWeChat("ftcweixin://?url=\(webPageUrl)&title=\(webPageTitle)&description=\(webPageDescription)&img=\(webPageImageIcon)&to=chat")
}
}
Custom Activity 2:
import UIKit
class WeChatMoment : UIActivity{
override init() {
self.text = ""
}
var text:String?
override func activityType()-> String {
return "WeChatMoment"
}
override func activityImage()-> UIImage?
{
return UIImage(named: "Moment")!
}
override func activityTitle() -> String
{
return "微信朋友圈"
}
override class func activityCategory() -> UIActivityCategory{
return UIActivityCategory.Action
}
func getURLFromMessage(message:String)-> NSURL
{
var url = "whatsapp://"
if (message != "")
{
url = "\(url)send?text=\(message)"
}
return NSURL(string: url)!
}
override func canPerformWithActivityItems(activityItems: [AnyObject]) -> Bool {
return true;
}
override func performActivity() {
shareToWeChat("ftcweixin://?url=\(webPageUrl)&title=\(webPageTitle)&description=\(webPageDescription)&img=\(webPageImageIcon)&to=moment")
}
}
You'll be able to see the two new icons in the action line of the action sheet. You can also change it to appear in the share line, as explained in the code.
One final note, there are pitfalls for WeChat sharing on Safari View, as WeChat doesn't conform to Safari's sharing standard. You can click the WeChat Share icon and WeChat will be able to share. But you can only get the page title and url in Safari View's page, unlike with WKWebView where you can get everything using evaluateJavaScript. So you'll need to get the share image and description (for sharing to friends) from other places.