A quick way to override / extend app delegate (UIAppDelegate) in iOS Unity Player. Read more on why you should / should not use this approach at http://eppz.eu/blog/override-app-delegate-unity-ios-osx-1/

OverrideAppDelegate.m

//
// Copyright (c) 2017 eppz! mobile, Gergely Borbás (SP)
//
// http://www.twitter.com/_eppz
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
// PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
// CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
// OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

#import "UnityAppController.h"


@interface OverrideAppDelegate : UnityAppController
@end


IMPL_APP_CONTROLLER_SUBCLASS(OverrideAppDelegate)


@implementation OverrideAppDelegate


-(BOOL)application:(UIApplication*) application didFinishLaunchingWithOptions:(NSDictionary*) options
{
    NSLog(@"[OverrideAppDelegate application:%@ didFinishLaunchingWithOptions:%@]", application, options);
    return [super application:application didFinishLaunchingWithOptions:options];
}


@end

extremely helpful...just works ..thanks