ios - Perform Segue After Alert -

this using text alert , check matching data:

- (void)alertview:(uialertview *)alertview clickedbuttonatindex:(nsinteger)buttonindex {     if (buttonindex == 1) {         nsstring *passcode = [alertview textfieldatindex:0].text;         //logic check match         //...         //...         [self performseguewithidentifier:@"pushmcqview" sender:sender];     } } 

i not understand need pass sender in call. have tried self , alertview, , both times application crashes. if please explain role of sender, , work in case, appreciate it.

thanks!

try this:

- (void)alertview:(uialertview *)alertview clickedbuttonatindex:(nsinteger)buttonindex {     if (buttonindex == 1) {         nsstring *passcode = [alertview textfieldatindex:0].text;         //logic check match         //...         //...         [self performseguewithidentifier:@"pushmcqview" sender:nil];     } } 

sender reference action performing. in - (ibaction)submit:(id)sender here sender button. can cast sender uibutton. hope helps.. :)