ios - UITableView custom accessory button image disappears when tapped -

i have uitableview custom accessory button created this:

in cellforrowatindexpath method following:

  ...   uibutton *myaccessorybutton =[[[uibutton alloc] init] autorelease];      myaccessorybutton =[self makeaccessorybutton: @"arrow2.png"];  [cell setaccessoryview:myaccessorybutton];  return cell; 

and function makeaccessorybutton defined follows:

- (uibutton *) makeaccessorybutton: (nsstring *) imagename {  uibutton *myaccessorybutton = [[uibutton buttonwithtype:uibuttontypecustom] autorelease]; cgrect frame = cgrectmake(0, 0, 24, 24); myaccessorybutton.frame = frame; [myaccessorybutton setbackgroundcolor:[uicolor clearcolor]]; [myaccessorybutton setimage:[uiimage imagenamed:imagename] forstate: uicontrolstatenormal]; [myaccessorybutton addtarget: self                       action: @selector(accessorybuttontapped:withevent:)             forcontrolevents: uicontroleventtouchupinside]; //myaccessorybutton.userinteractionenabled = yes; return ( myaccessorybutton );  } 

and function defined follows:

 - (void) accessorybuttontapped: (uicontrol *) button withevent: (uievent *) event {    nslog(@"testing ..."); } 

now problem is: when tap on button, image disappear when row highlighted, tried both states uicontrolstatenormal , uicontrolstatehighlighted button problem still exists, mentioned. if tap button if table view row not selected (or highlighted) there not problem button image (it not disappear). how can fix problem?

add image uicontrolstatehighlighted or uicontrolstateselected in custom accessory button.

[myaccessorybutton setimage:[uiimage imagenamed:imagename] forstate:uicontrolstatehighlighted];