ios - Is it possible to get notified if user clicks on UITableView sectionIndex -


i want change the color of section index of uitableview, if user clicks on it.

i can set sectionindexcolor , sectionindextrackingbackgroundcolor while initializing tableview , on other state, i've found no method change index color on click.

update:

i mean a-z side bar @ larger tableviews. here images (see grey bar @ image 2)

unselected state:

enter image description here

selected state: enter image description here

i have rather dirty solution this, apple not support public api. implemention works quit , should not crash if api changes in future (just not work anymore). subclassing uitableview , adding own callbacks sectionindex view on time added subview table. 

@interface mytableview : uitableview  @end  @implementation mytableview  - (void)selectionstarted {     [self setsectionindexcolor:[uicolor greencolor]]; }  - (void)selectionstoped {     [self setsectionindexcolor:[uicolor redcolor]]; }  - (void)addsubview:(uiview *)view {     [super addsubview:view];     if ([nsstringfromclass([view class]) isequaltostring:@"uitableviewindex"] && [view iskindofclass:[uicontrol class]]) {         uicontrol *cont = (uicontrol *)view;         [cont addtarget:self action:@selector(selectionstarted) forcontrolevents:uicontroleventtouchdown];         [cont addtarget:self action:@selector(selectionstoped) forcontrolevents:uicontroleventtouchupinside];         [cont addtarget:self action:@selector(selectionstoped) forcontrolevents:uicontroleventtouchupoutside];         [cont addtarget:self action:@selector(selectionstoped) forcontrolevents:uicontroleventtouchcancel];     } }  @end

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