By default the first row is highlighted after initializing the UIPickerView. How do i highlight a particular row or scroll to particular row programmatically?
Can I programmatically scroll to a desired row in UIPickerView?
Working in iOS 9 with XCode 7.3, to make runtime changes to data in a picker view called fieldPicker:
// first load your new data to your picker view's data source (not shown here...) then load the data into the picker view using it's delegate [self.fieldPicker reloadAllComponents]; // now that the data is loaded, select a row in the picker view through it's delegate [self.fieldPicker selectRow:([self.theFields count] - 1) inComponent:0 animated:NO]; // retrieve the row selected in the picker view to use in setting data from your data source in textboxes etc. long row = (long)[self.fieldPicker selectedRowInComponent: 0];
If you want to trigger delegate's method pickerView:didSelectRow:inComponent, you should call it manually:
[self.myPickerView selectRow:0 inComponent:0 animated:NO]; [self pickerView:self.myPickerView didSelectRow:4 inComponent:0];
self.myPickerView.selectRow(0, inComponent: 0, animated: false) self.pickerView(self.myPickerView, didSelectRow: 0, inComponent: 0)