ios - Segue delays UIButton highlight -

please check edit 3

i have uibutton upon pressing need see grayed out immediately. im using code declaration:

uibutton *mybutton; mybutton = [[uibutton alloc] init];    //[uibutton buttonwithtype:uibuttontypecustom]; mybutton.frame = cgrectmake(132, 375, 40, 40); buttonimage = [uiimage imagenamed:@"chat.png"]; [mybutton setimage:buttonimage forstate:uicontrolstatenormal]; [mybutton addtarget:self action:@selector(mybuttoninvoked:)forcontrolevents:uicontroleventtouchdown]; [cell.contentview addsubview:mybutton]; 

and here's method button triggers

- (void) mybuttoninvoked:(id)sender {     uibutton *catchbutton = (uibutton *)sender;      cgpoint buttonposition = [sender convertpoint:cgpointzero toview:self.tableview];     nsindexpath *indexpath = [self.tableview indexpathforrowatpoint:buttonposition];      [uiview animatewithduration:5                       delay:0.0                     options:uiviewanimationoptionautoreverse | uiviewanimationoptionrepeat | uiviewanimationoptioncurveeaseinout                  animations:^{                      catchbutton.alpha = 0.4;                      catchbutton.enabled = no;                  }                  completion:null];         [self performseguewithidentifier:@"heretothere" sender:self]; } 

im using uianimation code make button grayed out upon pressing, notice has delay of 0, yet uibutton graying out delay. how can rid of delay? need mybutton gray out.

edit

i have tried adding commentsbutton.showstouchwhenhighlighted = yes; , tried setting image button in uicontrolstatenormal , highlighted image same, gray.. delays well.

however, if place nslog @ beginning of method, can see print upon touch of button, why cant update image? have tried following try , work:

a) highlighting

b) changing of image

c) changing of alpha of uibutton

i have put in method see if work.

catchbutton.highlighted = yes; [catchbutton setimage:[uiimage imagenamed:@"chathighlighted.png"] forstate:uicontrolstateselected | uicontrolstatehighlighted]; 

edit 2

i set simple uibutton same way @selector(methodhere:) , alpha changes immediately. there must other cause makes delay? super confused now.

edit 3 commenting out last line in mybuttoninvoked: method above(see below):

[self performseguewithidentifier:@"heretothere" sender:self]; 

.. setting mybutton.alpha = 0.4 triggers immediately(visually) , problem gone. why happening, , how can around problem?

try this.

 [uiview animatewithduration:0.0 //0.0                       delay:0.0                     options:uiviewanimationoptioncurveeaseinout//uiviewanimationoptionautoreverse | uiviewanimationoptionrepeat |                  animations:^{                      catchbutton.alpha = 0.4;                      catchbutton.enabled = no;                  }                  completion:null]; 

delay happen: because using

animatewithduration = 5 second