objective c - UIButton not responding to 'touchUpInside' but will respond to 'touchDown' fine -

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in program, have uibutton declared programmatically property of uiviewcontroller. have set send actions when user triggers touchupinside event, shown here:

[restartbutton addtarget:self action:@selector(handlerestart) forcontrolevents:uicontroleventtouchupinside]; restartbutton name of uibutton.

when enter uicontroleventtouchdown in forcontrolevents parameter, works fine. however, uicontroleventtouchupinside not work. know why is?

you may want check restartbutton.bounds. may have set size of 0 causing uicontroleventtouchupinside never occur. best way of checking add borders layer.

[restartbutton.layer setborderwidth:1.0f]; [restartbutton.layer setbordercolor:[uicolor redcolor].cgcolor];

don't forget #import <quartzcore/quartzcore.h> above work


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