iOS Instagram Wall Post

InstagramWallPost.swift

let image = UIImage(named: "example")
let instagramURL = NSURL(string: "instagram://app")
if UIApplication.sharedApplication().canOpenURL(instagramURL!) {
	let documentsPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0]
	let saveImagePath = (documentsPath as NSString).stringByAppendingPathComponent("Image.igo")
	let imageData = UIImagePNGRepresentation(image!)
	do {
		try imageData?.writeToFile(saveImagePath, options: NSDataWritingOptions(rawValue: 0))
	} catch {
		print("Instagram sharing error")
	}
	let imageURL = NSURL(fileURLWithPath: saveImagePath)
	documentInteractionController.URL = imageURL
	documentInteractionController.annotation = ["InstagramCaption" : "Testing"]
	documentInteractionController.UTI = "com.instagram.exclusivegram"
			
	let bounds = someButton.bounds
	if !documentInteractionController.presentOpenInMenuFromRect(bounds, inView: self.view, animated: true) {
		print("Instagram not found")
	}
}
else {
	print("Instagram not found")
}