iphone - how to dismiss action sheet with a custom button -

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i created 2 buttons , 1 date picker on action sheet.on clicking done button want dismiss action sheet.can please code dismissing action sheet.

i'm using code giving action done button:

[donebutton addtarget:self action:@selector(dismissactionsheet:) forcontrolevents:uicontroleventvaluechanged];

in dismissactionsheet method write

[asheet dismisswithclickedbuttonindex:0 animated:yes];

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