I'm developing an app for iOS 6 with Facebook Share option. I need to check out that this app can able to check wether Facebook app was installed in device or not.
I have already tried with Account Store. But it was not working. Is there any some other way for this issue. I need help with code. Thanks in advance
You can test for it using -[UIApplication canOpenURL:]. The facebook custom URL scheme is "fb:".
NSURL *url = [NSURL URLWithString:#"fb://profile"];
if ([[UIApplication sharedApplication] canOpenURL:url]) {
// Facebook is installed
}
Related
How do i find the scheme of another app and deep link to it from my own iOS app?
More specifically, I want to deep link to the Testflight app upon certain conditions (set by my code). I'm assuming the person has Testflight installed, (which might be a bad assumption but we can live with that assumption).
I know that on Android, you can query for apps and send intents to deep link to someone else's app. What would be the equivalent on iOS?
There are two things you need to do. First, check to see if TestFlight is installed. Then create a new link to your app.
NSURL *customAppURL = [NSURL URLWithString:#"itms-beta://"];
if ([[UIApplication sharedApplication] canOpenURL:customAppURL]) {
// TestFlight is installed
// Special link that includes the app's Apple ID
customAppURL = [NSURL URLWithString:#"https://beta.itunes.apple.com/v1/app/978489855"];
[[UIApplication sharedApplication] openURL:customAppURL];
}
This special https://beta.itunes.apple.com URL will be opened directly in TestFlight.
Finally, if you are using iOS 9 (or later), you need to make an addition to your Info.plist to get the canOpenURL: method to work.
If your app is linked on or after iOS 9.0, you must declare the URL
schemes you want to pass to this method. Do this by using the
LSApplicationQueriesSchemes array in your Xcode project’s Info.plist
file. For each URL scheme you want your app to use with this method,
add it as a string in this array.
<key>LSApplicationQueriesSchemes</key>
<array>
<string>itms-beta</string>
</array>
From looking at the plist the URL scheme for TestFlight is "itms-beta://" I can't manage to get it deep linking yet, I've tried passing it the Apple ID, with and without a ? along with prefixing it with appleid= I will try bundle ID next.
To open the TestFlight app on the users device you can use:
NSURL *customAppURL = [NSURL URLWithString:#"itms-beta://"];
if ([[UIApplication sharedApplication] canOpenURL:customAppURL]) {
[[UIApplication sharedApplication] openURL:customAppURL];
}
Swift 3/4 answer:
if let customAppURL = URL(string: "itms-beta://"){
if(UIApplication.shared.canOpenURL(customAppURL)){
UIApplication.shared.open(customAppURL, options: [:], completionHandler: nil)
}
}
Most of the built-in applications Apple provides respond to custom URL schemes; for example, the Maps, Mail, YouTube, iTunes, and App Store applications will all open in response to custom URLs. However, there are also many established third-party applications with published URL schemes that you can use in your own application. You can search the applications schemes on
http://handleopenurl.com/
http://wiki.akosma.com/IPhone_URL_Schemes – both have a great list of URL schemes
Once you got the custom URL scheme then you can deep link to that app using the same schema,
NSURL *customAppURL = [NSURL URLWithString:#"urlscheme://"];
//Eg: NSURL *whatsappURL = [NSURL URLWithString:#"whatsapp://send?text=Hello%20World!"];
if ([[UIApplication sharedApplication] canOpenURL:whatsAppURL]) {
[[UIApplication sharedApplication] openURL:whatsAppURL]]];
}
Another way to invoke either one app or another:
- (IBAction)go:(id)sender {
NSString *cnnAppURL = #"cnn://";
NSString *mapsAppURL = #"maps://";
BOOL canOpenURL = [[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:cnnAppURL]];
NSString *url = canOpenURL ? cnnAppURL : mapsAppURL;
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];
}
Please read "UseYourLoaf's recent blog post on using URLschemes with canOpenURL. This relates to new security concerns and solutions. Quote:
"This is useful but developers including Twitter and Facebook were using this mechanism to discover the list of Apps installed on a device so they can deliver “tailored content”. Apple decided this is a privacy violation and so in iOS 9 restricted the querying of URL schemes. If you build and link against the iOS 9 SDK you need to whitelist the schemes your app will query. What is important to understand is that this policy can also impact older Apps that have not yet been rebuilt with the iOS 9 SDK."
Please read this link on issues related to the canOpenURL function
Read #picciano's last point - this won't work without modifying your app's plist.
AS google map SDK doc description, we can use the code below to call native google maps to finish directions. But how can I test these code on my Xcode? it always return "can't use comgooglemaps://"?
if ([[UIApplication sharedApplication] canOpenURL:
[NSURL URLWithString:#"comgooglemaps://"]]) {
[[UIApplication sharedApplication] openURL:
[NSURL URLWithString:#"comgooglemaps://?center=40.765819,-73.975866&zoom=14&views=traffic"]];
} else {NSLog(#"Can't use comgooglemaps://");
}
If it is iOS 9 you might want to try this: under info
custom iOS taget properties, LSApplicationQueriesSchemes. add comgooglemaps
Apple Dev Notes say "NO if no app is available that will accept the URL; otherwise, returns YES."
Make sure you have Google Maps installed, not the default Apple maps App.
Opening that URL requires the Google Maps app to be installed. You can't install apps from the app store on the simulator (they aren't compiled for x86 as a start), so you will need to test on an actual device
I am using Instagram App feature in my app for sharing an image. For that i am checking whether the instagram app is installed on that device or not?. the code is below,..
if ([self isAppInstalled]) {
Dlog(#"Instagram App Installed");
} else {
DLog(#"Instagram app not installed");
}
- (BOOL) isAppInstalled {
NSURL *appURL = [NSURL URLWithString:#"instagram://app"];
return [[UIApplication sharedApplication] canOpenURL:appURL];
}
This URL instagram://app check the device for whether instagram app is installed or not?
This works fine on simulator and device also. But my doubt is this legally accepted by apple?. Because i haven't found any documentation about this. Someone help me to solve this.
Helpers are appreciated.
What you are doing now is just fine, for that purpose only apple has provided url schemes. Facebook SDK also doing the same for sharing,login etc if native fb app is installed. There is nothing wrong in that.
Here is the instagram documentation regarding that check this
I am using iCloud for core data. if user is not logged in on iCloud i want to take him to setting page, is it possible in ios.
Thanks
If you are writing app for iOS < 5.1 then you can use custom URL schemes - find list here.
[[UIApplication sharedApplication] openURL:[NSURL URLWithString: myUrlString ]]; //find myUrlString in link above
But this feature was removed in iOS 5.1 and most likely won't available in the feature
Within my application there is alink to to appstore for downloading the new version of my application.
When user press this link, the iPhone open some screes before getting the AppStore screen.
Those screen, seem to be the browser's screens, but i'm not sure.
How can i create a direct link to my application in AppStore?
Thanks,
Eyal.
itms-apps://itunes.com/apps/APPNAME
Example:
NSURL *url = [NSURL URLWithString:#"itms-apps://itunes.com/apps/trenes"];
[[UIApplication sharedApplication] openURL:url];