I have added a web view to my app however i keep getting a blank white screen when running on simulator or even device. When i enter apple.com as the website it works perfect but for any other website it just shows a blank white screen.
import UIKit
class ViewController: UIViewController {
#IBOutlet var WebView: UIWebView!
override func viewDidLoad() {
super.viewDidLoad()
var URL = NSURL(string: "http://www.apple.com")
WebView.loadRequest(NSURLRequest(URL: URL!))
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
Have you added autolayout to your webView? As the image below shows?
Just select your webView and click on Add New Constraints and set your constraints.
If this is not your issue, check the output window if it blocks requests that are not HTTPS, then you can add this code to your info.plist code.
<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key>
<true/>
</dict>
Update
You´re getting the white screen because you´re missing the http:// in your URL.
In Plist of the app give App Transport Security Settings,Give dictionary and then under it Allow Arbitrary Loads And set bool to YES, as in iOS 9 you have to give https request, Or simply add https with url, it will work
Related
In June, Admob adverts worked perfectly and AdMob sent a letter with a verification PIN for me to verify my identity & payment details.
Around the beginning of July, nearly all live ads stopped displaying in my app. I am still making the same number of requests, but impressions are so low I have dropped to £0.00/£0.01 a day. All test ads work correctly.
This issue began around the time I renamed my app (only on the app store display), however; all links to my app in my AdMob account are correct so the name change appears to have made no difference on their front-end UI.
When I debug my app, I get a list of warnings in the output section:
[I-ACS025031] AdMob App ID changed. Original, new: (nil), AppId
My 'GADApplicationIdentifier' value in my info.plist is the same as the 'new' app id.
[I-ACS013003] User property name must start with a letter: _ap
I am not setting any user properties, no idea what this means.
What have I tried?
Setting up new ad units.
Reverting back to an older version of the app.
Contacted AdMob 'support' via a form. They told me my ad serving is being limited. They did not say for how long and it has been around 2/3 weeks (by 'limited', I don't think they meant completely stopped).
Checked for policy violations in my account; nothing is there.
Code I use to display ads:
I have created an 'AdMobDisplayer' class that allows me to set up and display ads; this is called by each view controller. For example, my banner ads code:
View Controller:
let adMobDisplayer = AdMobDisplayer()
#IBOutlet weak var bannerView: GADBannerView!
override func viewDidLoad() {
super.viewDidLoad()
self.bannerView = self.adMobDisplayer.setupAdBannerView(self.bannerView, viewController: self, adUnitId: Constants.timerTabBannerAdId)
self.adMobDisplayer.displayBannerAd(self.bannerView)
}
AdMobDisplayer:
func setupAdBannerView(_ bannerView: GADBannerView, viewController: UIViewController, adUnitId: String, bannerViewDelgate: GADBannerViewDelegate? = nil) -> GADBannerView {
if(checkIfAdsAreDisabled()) {
return bannerView
}
/// Creates a new GADBannerView to be displayed in a view controller
bannerView.adUnitID = adUnitId
/// bannerView.adUnitID = Constants.testBannerAdId
bannerView.rootViewController = viewController
if let delegate = bannerViewDelgate {
bannerView.delegate = delegate
}
return bannerView
}
func displayBannerAd(_ bannerView: GADBannerView) {
if(checkIfAdsAreDisabled()) {
return
}
///Creates a request and loads an advert from AdMob
let request = GADRequest()
request.testDevices = [ "My Device Id" ]
bannerView.load(request)
}
This should display a banner ad in the view. It worked when I first added adverts in, it works for test adverts, but intermittently/rarely for live adverts now.
Find the full application on my GitHub: https://github.com/AlexMarchant98/KeGal-Trainer
Thanks in advance for any help!
I recently worked on GADBannerView in my last app and had almost similar issue, in your case you may need to generate Admob ad id, from their website.
So I fixed this ages ago, but, my fix was to add the required 'NSAppTransportSecurity' keys into my info.plist.
https://developers.google.com/admob/ios/app-transport-security
Here is a little problem I just noticed in one of my iOS apps.
I use Xcode Version 10.1 and Swift 4.2.
The app has a button which when pushed brings up a view controller, this VC is in charge of opening a link to the app itself in itunes. I have done this many times with no problems in the past.
But this time, a blank pages opens up and nothing else. I have tried to replace only the URL I am interested in by "https://www.google.com/" and it works perfectly as expected (i.e. the Google page shows up). Of course I have verified that my URL is correct.
Can anybody see what could be the issue?
Thanks in advance for any relevant tip.
Here is the code for the whole view controller.
import UIKit
import WebKit
class appStore_ViewController: UIViewController, WKNavigationDelegate {
let appDelegate:AppDelegate = UIApplication.shared.delegate as! AppDelegate
var webView: WKWebView!
override func loadView() {
webView = WKWebView()
webView.navigationDelegate = self
view = webView
}
override func viewDidLoad() {
super.viewDidLoad()
let appStoreURL = URL(string: "https://itunes.apple.com/app/id\ (appDelegate.applicationID)?mt=8")
//let appStoreURL = URL(string: "https://www.google.com/") // This works as expected.
print("The link: \(appStoreURL!.absoluteString)") // This shows what is expected (a working URL).
webView.load(URLRequest(url: appStoreURL!))
}
}
You should see what happen while visiting the AppStore Url with safari browser in your iPhone. then you will find the it still show blank page but show an alert to open the Appstore.
If you want to do the same function in your app with webView. you have to handle the alert the by yourself.
You need to implement the decidePolicyForNavigationAction method of WKNavigationDelegate for this to work.
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)
(WKNavigationActionPolicy))decisionHandler {
/* Code to handle other schemes such as file, https, http, etc. if required
*/
if ([[[navigationAction.request URL] scheme] isEqual:#"itms-appss"])
{
[[UIApplication sharedApplication] openURL:[navigationAction.request URL]];
decisionHandler(WKNavigationActionPolicyCancel);
return;
}
}
WKWebview does not inherently support different schemes such as "itms-appss" and you need to check and implement the url scheme you want to support.
You also need to check if you are running in iPadOS and set WKWebpagePreference to use mobile content mode if you do so.
My requirement is to redirecting the HTTPS request to HTTP from WKWebView.
But the request initiated inside the webview(Ajax call) are not being captured.
After that, the requests being made from that webpage are not captured.
Please share your ideas. Much appreciated.
You would need to implement a WebPolicyDelegate with a decidePolicyForNavigationAction and then load the page yourself without https. This should work, but I haven't tested it.
Have a look at this post for some insides, on UIWebView it would have worked with shouldStartLoadWithRequest:
Migrating from UIWebView to WKWebView
Use the following steps for UIWevView to load a remote address
Load the url address
let urlString = "http://www.example.com"
webView.loadRequest(NSURLRequest(url: NSURL(string:"url) as! URL) as URLRequest)
Conform UIWebViewDelegate in ViewController
After conforming UIWebViewDelegate, use the following delegates
/* Delegates for WebView */
fun webViewDidStartLoad(_ webView: UIWebView){
// Control loading the url
}
func webViewDidFinishLoad(_ webView: UIWebView){
// statements when loading finishes
}
fun webView(_ webView: UIWebView, didFailLoadWithError error: Error){
// Handle error here
}
If still does not work, add a row for "App Transport Security Settings" in your project Info.plist. Here is screenshot for it settings.
I'm writing an iOS Application that needs to use Oauth to connect to Instagram. The standard iOS mechanism for o-auth is to provide a redirect URL with a custom scheme. For instance, myapp://oauth/redirect -- And register that in your iOS app. Which is all fine and dandy, except the management portal for Instagram seems to prevent any scheme but http or https when you setup your valid redirect URI's.
Any thoughts on how to make this work? Am I forced to add a server component to capture / redirect?
There are two approaches to doing this without using a custom URL Scheme, each with positives and negatives:
Universal Links - PROS: Redirects to Safari so you don't have to build in a web browser yourself. Safari redirect also allows for using the users iCloud keychain which can make the login experience easier for your user. CONS: Setting it up is kind of a bear, and requires your own server and a published app. Doesn't seem to work in simulator.
Setup and present a UIWebView, and in webView:shouldStartLoadWithRequest:navigationType: catch the access token from the fragment, and prevent loading / redirection. This allows you to use any URL you want as the redirect URL because it doesn't matter :)
Example:
import UIKit
class OAuthVC : UIViewController, UIWebViewDelegate {
#IBOutlet var webView : UIWebView?
public var success : ((URLRequest) -> Void)?
public var presentVC : UIViewController?
func handle(_ url: URL) {
view.tag = 1 // Make sure our view and thus webview is loaded.
webView!.loadRequest(URLRequest(url: url))
}
func webView(_ webView: UIWebView, shouldStartLoadWith request: URLRequest, navigationType: UIWebViewNavigationType) -> Bool {
if request.url?.fragment?.contains("access_token") == true {
success!(request)
dismiss(animated: true, completion: nil)
return false
}
return true
}
func webViewDidFinishLoad(_ webView: UIWebView) {
// If we stop on a page before the redirect closes us, user interaction is required. Present.
presentVC?.present(self, animated: true, completion: nil)
}
}
List item
I've been having trouble getting the UIWebView to load a specific url page, after running the app through simulator for the first time everything seems to work the url loads just fine. But since i've turned off my mac and tried running the app again through simulator it's not showing the set page.
I know the code that i'm using works because it was working the first time and i did not make any changes to it.
If its not the piece of coding i'm using then what could it be? I've read all the post that is in stackoverflow in regards to URL not loading in UIWebView tried everyones suggestion on those posts and still i could not seem to get the page to load.
here is what i've done, again i ran the very same code the first time and it worked but now it just sits on blank white page.
import UIKit
class infoViewController: UIViewController {
#IBOutlet var info: UIWebView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
var url = NSURL(string: "http://iglesianicristo.net/directory/Australia%20West/Darwin/44844")
var request = NSURLRequest(URL:url!)
info.loadRequest(request)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}