CODEWITHSUNDEEP
ios
locoboy
locoboy

Reputation: 38940

When exactly does the UIApplicationLaunchOptionsURLKey get populated?

When does a custom URL get populated in launchOptions in the AppDelegate.m file? I've loaded my apps' custom URL in Safari and UIApplicationLaunchOptionsURLKey is not populated. 

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{    

    NSLog(@"app launch options");
    NSLog([launchOptions valueForKey:UIApplicationLaunchOptionsURLKey]);
}

Upvotes: 0

Views: 1023

Answers (2)

agy
agy

Reputation: 2854

UIApplicationLaunchOptionsURLKey gets populated when you try to open the app by means of:

[[UIApplication sharedApplication] openURL:[NSURL URLWithString: @"yourapp://"]];

...and yourapp is not running.

Then (BOOL)application:(UIApplication *):didFinishLaunchingWithOptions:(NSDictionary *) will get executed and NSDictionary will get populated with two key-values UIApplicationLaunchOptionsURLKeyand UIApplicationLaunchOptionsSourceApplicationKey

Upvotes: 2

Brandon A
Brandon A

Reputation: 21

The main entry point for any C derived program is a function called main, and in ObjC it's called int main. This kicks of a series of events that ultimately calls the applicationDidFinishLaunchingWithOptions: method that ultimately leads to the user getting to see the first "screen" you want them to see.

2 things will happen after applicationDidFinishLaunchingWithOptions: in the next series of events.

  1. If there is a populated URL key it will use that URL key and call applicationDidBecomeActive:.

  2. If there is not a URL key set it will then call application: openURL: sourceURL: annotation which is where you would set it.

That does leave an issue of how it is populated for the initial call in applicationDidFinishLaunchingWithOptions:. I believe you can set this in the info.list file.

Upvotes: 2

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