ios - dynamically created method not being called -

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after dynamically creating method in appdelegate using class_addmethod class, never gets called when should.

the method create on runtime is:

-(bool)application:(uiapplication *)application            openurl:(nsurl *)url {   //do something...   return yes; }

the code used create previous method dynamically is:

    {       uiapplication* app = [[uiapplication sharedapplication] delegate];       class_addmethod([app class], @selector(application:openurl:), (imp)mymethodimp, @"b@:");     }

along imp function: 

    bool mymethodimp(id self, sel _cmd, uiapplication *application, nsurl *url)     {       [self application: application openurl:url];       //do something...       return yes;     }

i have verified indeed created on app delegate using class_getinstancemethod method

am missing something?

@bbum right,uiapplication cache delegate dones not respond method, can this

@interface uiapplication (mbshare)  @end  @implementation uiapplication (mbshare)  + (void) load {     static dispatch_once_t oncetoken;     dispatch_once(&oncetoken, ^{          sel originalselector = @selector(setdelegate:);         sel swizzledselector = @selector(mb_setdelegate:);          method originalmethod = class_getinstancemethod(self, originalselector);         method swizzledmethod = class_getinstancemethod(self, swizzledselector);          bool didaddmethod =         class_addmethod(self,                         originalselector,                         method_getimplementation(swizzledmethod),                         method_gettypeencoding(swizzledmethod));          if (didaddmethod) {             class_replacemethod(self,                                 swizzledselector,                                 method_getimplementation(originalmethod),                                 method_gettypeencoding(originalmethod));         } else {             method_exchangeimplementations(originalmethod, swizzledmethod);         }      }); }  - (void) mb_setdelegate: (id) delegate {     //hook method here     [[mbshareapi shareinstance] hookappdelegate: delegate];     [self mb_setdelegate: delegate]; }  @end

more detail see:https://github.com/baoge2012/mbshare/blob/master/mbshare/mbshareapi.m


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