ios - Tableview and UIbutton simultaneously touchdownpress registered input order on which button is let loose first -

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the following problem occurs in project, when pressed , hold backbutton (uibarbuttonitem) , tableview row. , letting go tableview row , followed letting go backbutton following error occurs:

terminating app due uncaught exception 'nsrangeexception', reason: '*** -[__nsarraym objectatindex:]: index 1 beyond bounds [0 .. 0]'.

i have figured out problem here tableview didselectrowatindexpath has wrong indexpath.

case: uibarbuttonitem , tableview row pressed , hold simultaneously.

in situation 1: uibarbuttonitem letting go , followed letting go tableview row. result: selector uibarbuttonitem called. (in case no error.)

in situation 2: tableview row letting go , followed letting go uibarbuttonitem. result: selector uibarbuttonitem called , followed delegate methods of tableview. (in case error above occurs.)

- (void)backbutton {    self.itemlist = [self getolditem];    [self.tableview reloaddata]; }  - (void)tableview:(uitableview *)tableview didselectrowatindexpath:(nsindexpath *)indexpath {      // crash on line.     model *model = [[self.itemlist objectatindex:indexpath.section] objectatindex:indexpath.row];     [model show]; }

does know if normal behavior order selector methods of button called? , how should handle this?


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