objective c - How to run NSTimer until flag variable ON in Cocoa -


i have problem: want nstimer waiting until flag variable yes, if flag = yes, mytimer stop. how can that? tried below code:

nstimer *mytimer; int delay = 6.0; scantimer= [nstimer scheduledtimerwithtimeinterval:6.0 target:self selector:@selector(anotherfunc) userinfo:nil repeats:yes]; mytimer= [nstimer timerwithtimeinterval: delay                                          target:self                                        selector: @selector(resetall:) userinfo:nil                                         repeats:no];         [[nsrunloop currentrunloop] addtimer:mytimer formode:nsmodalpanelrunloopmode];         [[nsapplication sharedapplication] runmodalforwindow: scanningpanel];

this resetall () function : 

-(void) resetall: (nstimer *) thetimer {     if(flag)     {         nslog(@"killwindow");         [[nsapplication sharedapplication] abortmodal];         [scanningpanel orderout: nil];         flag = no;     }     else     {         delay +=6.0;         mytimer= [nstimer timerwithtimeinterval: delay                                          target:self                                        selector: @selector(resetall:) userinfo:nil                                         repeats:no];         [[nsrunloop currentrunloop] addtimer:mytimer formode:nsmodalpanelrunloopmode];         [[nsapplication sharedapplication] runmodalforwindow: scanningpanel];     }  }

i used 2 nstimer, mytimer run, scantimer not run. please give me suggestions. in advance

try this:-  nstimer *mytimer; int delay = 6.0; scantimer= [nstimer scheduledtimerwithtimeinterval:6.0 target:self selector:@selector(anotherfunc) userinfo:nil repeats:yes]; mytimer= [nstimer scheduledtimerwithtimeinterval: delay                                          target:self                                        selector: @selector(resetall:) userinfo:nil                                         repeats:no]; [nsapp beginsheet:scanningpanel modalforwindow:[self window]         modaldelegate:self        didendselector:nil           contextinfo:self];  - (void)resetall:(nstimer *)thetimer {     if (flag== yes)     {     [nsapp endsheet:scanningpanel];     [scanningpanel orderout:self];         flag=no;     }     else     {    delay +=6.0; mytimer= [nstimer scheduledtimerwithtimeinterval: delay                                          target:self                                        selector: @selector(resetall:) userinfo:nil                                         repeats:no];     [nsapp beginsheet:scanningpanel modalforwindow:[self window]         modaldelegate:self        didendselector:nil           contextinfo:self];     } }

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