ios - How set UIPickerView in cascade -

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i'm trying set 2 uipickerviews, both filled nsdictionary, work ok, need second uipickerview implement refresh depends of selection of first uipickerview, understand me?

the first uipickerview filled way:

for (nsdictionary *local in json) {     nsstring *nombre = [local objectforkey:@"name"];     nsstring *idlocal = [local objectforkey:@"id"];      self.diclocales = [nsdictionary dictionarywithobjectsandkeys: idlocal, @"idlocal", nombre, @"nombrelocal", nil];     [listalocales addobject:self.diclocales]; }

and second uipickerview filled way:

for (nsdictionary *servicio in json) {     nsstring *nombre = [servicio objectforkey:@"name"];     nsstring *idservicio = [servicio objectforkey:@"id"];      self.dicservicios = [nsdictionary dictionarywithobjectsandkeys: idservicio, @"idservicio", nombre, @"nombreservicio", idlocal, @"idlocal", nil];     [listaservicios1 addobject:self.dicservicios]; }

you note variable idlocal, corresponds id of first uipickerview rows. then, need, if in first uipickerview selected row idlocal 1, in second uipickerview reloaded or refreshing rows corresponds idlocal 1.

please hope can me, , sorry english :p

you have implement <uipickerviewdelegate> method below 

- (void)pickerview:(uipickerview *)pickerview didselectrow:(nsinteger)row incomponent:(nsinteger)component {     if ([pickerview isequal:firstpickerview]) {         //secondpickerview fill code         [secondpickerview reloadallcomponents];     }     else {         //secondpickerview selected row     } }

and change second uipickerview fill loop accordingly


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