objective c - libc++abi.dylib: terminating with uncaught exception of type NSException in Xcode 8.0 -

i quite new ios app developing. working on project builded long time ago (i think in 2011).

i don't have knowledge xcode , objective c.

i have solved of problems can't solved 1 :(

although many other peoples asked question can't find solution of this.

i getting error

2016-10-26 12:51:59.200 testcordova1[12758:1094626] *** terminating     app due uncaught exception 'nsinvalidargumentexception', reason: '-     [appdelegate application:didfinishlaunchingwithoptions:]: unrecognized selector sent instance 0x7fc476e02be0' *** first throw call stack: (     0   corefoundation                      0x000000010310134b __exceptionpreprocess + 171     1   libobjc.a.dylib                     0x000000010221621e objc_exception_throw + 48     2   corefoundation                      0x0000000103170f34 -[nsobject(nsobject) doesnotrecognizeselector:] + 132     3   corefoundation                      0x0000000103086a2e ___forwarding___ + 526     4   corefoundation                      0x0000000103086798 _cf_forwarding_prep_0 + 120     5   testcordova1                        0x0000000101ba8810 -[appdelegate application:didfinishlaunchingwithoptions:] + 304     6   uikit                               0x0000000103e5568e -[uiapplication _handledelegatecallbackswithoptions:issuspended:restorestate:] + 290     7   uikit                               0x0000000103e57013 -[uiapplication _callinitializationdelegatesformainscene:transitioncontext:] + 4236     8   uikit                               0x0000000103e5d3b9 -[uiapplication _runwithmainscene:transitioncontext:completion:] + 1731     9   uikit                               0x0000000103e5a539 -[uiapplication workspacedidendtransaction:] + 188     10  frontboardservices                  0x000000010832a76b __fbsserialqueue_is_calling_out_to_a_block__ + 24     11  frontboardservices                  0x000000010832a5e4 -[fbsserialqueue _performnext] + 189     12  frontboardservices                  0x000000010832a96d -[fbsserialqueue _performnextfromrunloopsource] + 45     13  corefoundation                      0x00000001030a6311 __cfrunloop_is_calling_out_to_a_source0_perform_function__ + 17     14  corefoundation                      0x000000010308b59c __cfrunloopdosources0 + 556     15  corefoundation                      0x000000010308aa86 __cfrunlooprun + 918     16  corefoundation                      0x000000010308a494 cfrunlooprunspecific + 420     17  uikit                               0x0000000103e58db6 -[uiapplication _run] + 434     18  uikit                               0x0000000103e5ef34 uiapplicationmain + 159     19  testcordova1                        0x0000000101ba5714 main + 100     20  libdyld.dylib                       0x00000001057fb68d start + 1 ) libc++abi.dylib: terminating uncaught exception of type nsexception (lldb)       

my main.m file

#import <uikit/uikit.h>  int main(int argc, char* argv[]) {      nsautoreleasepool * pool = [[nsautoreleasepool alloc] init];     int retval = uiapplicationmain(argc, argv, nil, @"appdelegate");     [pool release];     return retval;  } 

appdelegate.h

#import <uikit/uikit.h> #import <cordova/cdvviewcontroller.h>   @interface appdelegate : cdvviewcontroller {      nsstring* invokestring; }    @property (copy)  nsstring* invokestring; @property (weak) iboutlet uiwindow *window;  @property(nonatomic, strong) uiviewcontroller *viewcontroller;  @end 

appdelegate.m file

#import <uikit/uikit.h> #import "mainviewcontroller.h"  #import <avfoundation/avfoundation.h> #import "abcplugin.h" #import "fileio.h" #import "appdelegate.h"  @implementation appdelegate  @synthesize invokestring;  - (id) init {     return [super init]; }  - (bool)application:(uiapplication *)application      didfinishlaunchingwithoptions:(nsdictionary *)launchoptions {        nsarray *keyarray = [launchoptions allkeys];     if ([launchoptions objectforkey:[keyarray objectatindex:0]]!=nil)      {         nsurl *url = [launchoptions objectforkey:[keyarray objectatindex:0]];         self.invokestring = [url absolutestring];         nslog(@"lemobileapp launchoptions = %@",url);     }       bool retval = [super application:application didfinishlaunchingwithoptions:nil];      if (retval == yes) {         // set root view controller of window         [self.window setrootviewcontroller:self.viewcontroller];          abcplugin* objabcplugin = [[abcplugin alloc] init];         [objabcplugin showsplashscreen];     }      return retval; }  - (bool)application:(uiapplication *)application handleopenurl:(nsurl *)url  { }  -(id) getcommandinstance:(nsstring*)classname {     return [super getcommandinstance:classname]; }   - (void)webviewdidfinishload:(uiwebview *)thewebview  {     if(self.invokestring)     {          nsstring* jsstring = [nsstring stringwithformat:@"var invokestring = \"%@\";", self.invokestring];         [thewebview stringbyevaluatingjavascriptfromstring:jsstring];     }      [ super webviewdidfinishload:thewebview ];      [[avaudiosession sharedinstance]     setcategory:avaudiosessioncategoryplayback error:nil];   // add our custom splashscreen     abcplugin* objabcplugin = [[abcplugin alloc] init]; [objabcplugin showsplashscreen];       return; }  - (void)webviewdidstartload:(uiwebview *)thewebview  {     return [ super webviewdidstartload:thewebview ]; }   - (bool)webview:(uiwebview *)thewebview shouldstartloadwithrequest:  (nsurlrequest *)request navigationtype:   (uiwebviewnavigationtype)navigationtype {      nsurlrequest * req = request;     if ([[[request url] absolutestring] isequaltostring: @"about:blank"]) {         nslog(@"rewriting blank");         nsstring* app = [[nsbundle mainbundle] resourcepath];         nsstring* newpath = [nsstring stringwithformat: @"%@/www/index.html", app];         nsurl* newurl = [nsurl fileurlwithpath:newpath];          req = [nsurlrequest requestwithurl:newurl];     }       return [ super webview:thewebview shouldstartloadwithrequest:req navigationtype:navigationtype ]; }   - (bool)execute:(cdvinvokedurlcommand*)command {     return [ super execute:command]; }  - (void)dealloc {     [ super dealloc ]; }  @end 

i devloping using cordova.

any appreciated