warning: 'rootviewcontroller' may not respond '-peformselector:withobject:afterdelay:'
crash in debugger console:
{[session started @ 2011-04-30 21:57:58 +0800.] 2011-04-30 21:57:59.414 gravity man[57133:207] -[rootviewcontroller peformselector:withobject:afterdelay:]: unrecognized selector sent instance 0x4e0d740 2011-04-30 21:57:59.417 gravity man[57133:207] * terminating app due uncaught exception 'nsinvalidargumentexception', reason: '-[rootviewcontroller peformselector:withobject:afterdelay:]: unrecognized selector sent instance 0x4e0d740' * call stack @ first throw: ( 0 corefoundation 0x00f0cbe9 exceptionpreprocess + 185 1 libobjc.a.dylib 0x010615c2 objc_exception_throw + 47 2 corefoundation 0x00f0e6fb -[nsobject(nsobject) doesnotrecognizeselector:] + 187 3 corefoundation 0x00e7e366 __forwarding + 966 4 corefoundation 0x00e7df22 _cf_forwarding_prep_0 + 50 5 gravity man 0x00002c8d -[rootviewcontroller viewwillappear:] + 471 6 uikit 0x00374c9a -[uinavigationcontroller _starttransition:fromviewcontroller:toviewcontroller:] + 858 7 uikit 0x0036f606 -[uinavigationcontroller _startdeferredtransitionifneeded] + 266 8 uikit 0x00487e01 -[uilayoutcontainerview layoutsubviews] + 226 9 quartzcore 0x00cab451 -[calayer layoutsublayers] + 181 10 quartzcore 0x00cab17c calayerlayoutifneeded + 220 11 quartzcore 0x00ca437c _zn2ca7context18commit_transactionepns_11transactione + 310 12 quartzcore 0x00ca40d0 _zn2ca11transaction6commitev + 292 13 uikit 0x002bb19f -[uiapplication _reportapplaunchfinished] + 39 14 uikit 0x002bb659 -[uiapplication _runwithurl:payload:launchorientation:statusbarstyle:statusbarhidden:] + 690 15 uikit 0x002c5db2 -[uiapplication handleevent:withnewevent:] + 1533 16 uikit 0x002be202 -[uiapplication sendevent:] + 71 17 uikit 0x002c3732 _uiapplicationhandleevent + 7576 18 graphicsservices 0x01842a36 purpleeventcallback + 1550 19 corefoundation 0x00eee064 cfrunloop_is_calling_out_to_a_source1_perform_function + 52 20 corefoundation 0x00e4e6f7 __cfrunloopdosource1 + 215 21 corefoundation 0x00e4b983 __cfrunlooprun + 979 22 corefoundation 0x00e4b240 cfrunlooprunspecific + 208 23 corefoundation 0x00e4b161 cfrunloopruninmode + 97 24 uikit 0x002bafa8 -[uiapplication _run] + 636 25 uikit 0x002c742e uiapplicationmain + 1160 26 gravity man 0x0000282a main + 84 27 gravity man 0x000027cd start + 53 ) terminate called after throwing instance of 'nsexception' } .h:
{ @interface rootviewcontroller : uiviewcontroller { iboutlet uilabel* label1; iboutlet uilabel* label2; iboutlet uilabel* label3; iboutlet uiimageview* image1; iboutlet uiimageview* image2; iboutlet uiimageview* image3; iboutlet uibutton* newgamebutton; iboutlet uibutton* facebookbutton; iboutlet uibutton* settingsbutton; cakeyframeanimation* popanimation; } -(ibaction)newgame:(id)sender; @end } .m:
@implementation rootviewcontroller -(ibaction) newgame:(id)sender { gamescreen* pong = [[gamescreen alloc] initwithnibname:@"gamescreen" bundle:nil]; [self.navigationcontroller pushviewcontroller:pong animated:no]; } -(void)popview:(uiview*)view { [view sethidden:no]; [[view layer] addanimation:popanimation forkey:@"transform.scale"]; } - (void)viewdidload { popanimation = [cakeyframeanimation animationwithkeypath:@"transform.scale"]; popanimation.keytimes = [nsarray arraywithobjects: [nsnumber numberwithfloat:0.0], [nsnumber numberwithfloat:0.7], [nsnumber numberwithfloat:1.0], nil]; popanimation.values = [nsarray arraywithobjects: [nsnumber numberwithfloat:0.01], [nsnumber numberwithfloat:1.1], [nsnumber numberwithfloat:1.0], nil]; [popanimation retain]; [super viewdidload]; } -(void)viewwillappear:(bool)animated { [popanimation setduration:0.9]; [label1 sethidden:yes]; [label2 sethidden:yes]; [label3 sethidden:yes]; [newgamebutton sethidden:yes]; [facebookbutton sethidden:yes]; [settingsbutton sethidden:yes]; [self performselector:@selector(popview:) withobject:label1 afterdelay:0.9]; [self performselector:@selector(popview:) withobject:label2 afterdelay:0.95]; [self performselector:@selector(popview:) withobject:label3 afterdelay:1]; //"warning shows among these lines"// [self performselector:@selector(popview:) withobject:newgamebutton afterdelay:0.9]; [self peformselector:@selector(popview:) withobject:settingsbutton afterdelay:0.95]; [self performselector:@selector(popview:) withobject:facebookbutton afterdelay:1]; [super viewwillappear:animated]; } @end } thank , please help!
change
[self peformselector:@selector(popview:) withobject:settingsbutton afterdelay:0.95];` ^^ into
[self performselector:@selector(popview:) withobject:settingsbutton afterdelay:0.95];` ^^^ ie add r between pe , formselector
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