While using picker view - ios

Question

enter image description here $ The data of assigned array is not showing in the pickerView. What mistake I am doing as I haven't being able to identify my mistake.
Its .m file code:
// PickerViewController.m
// dropDownButtonTry
//
#import "PickerViewController.h"
#interface PickerViewController ()
{
NSArray *genderArray;
NSArray *cityArray;
NSArray *currentArray;
UITextField *currentTextField;
}
#end
#implementation PickerViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
cityArray = [[NSArray alloc]initWithObjects:#"Delhi",#"Mumbai",#"Chennai", nil];
genderArray = [[NSArray alloc]initWithObjects:#"Male",#"Female",#"Transgender", nil];
self.pickerView.hidden = YES;
self.btnDoneOutlet.hidden = YES;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
[self.view endEditing:YES];
}
//Needed to prevent keyboard from opening
-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
currentTextField = textField;
if (textField == self.textFieldGenderOutlet) {
currentArray = genderArray;
}
if (textField == self.textFieldCityOutlet) {
currentArray = cityArray;
}
// do here everything you want
NSLog(#"Pressed on TextField!");
self.pickerView.hidden = NO;
self.btnDoneOutlet.hidden = NO;
[self.view endEditing:YES]; // Hide keyboard
NSLog(#"****current array**** %#",currentArray);
return NO;
}
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 1;
}
-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
return [currentArray count];
}
-(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
[currentTextField setText:[currentArray objectAtIndex:row]];
}
-(NSString*)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
return [currentArray objectAtIndex:row];
}
- (IBAction)textFieldGenderAction:(id)sender {
self.pickerView.hidden = NO;
self.btnDoneOutlet.hidden = NO;
}
- (IBAction)btnDone:(id)sender {
self.pickerView.hidden = YES;
self.btnDoneOutlet.hidden = YES;
}
- (IBAction)textFieldCityAction:(id)sender {
}
#end

Answer 1

You need to reload picker view :
-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
currentTextField = textField;
if (textField == self.textFieldGenderOutlet) {
currentArray = genderArray;
}
if (textField == self.textFieldCityOutlet) {
currentArray = cityArray;
}
// do here everything you want
NSLog(#"Pressed on TextField!");
self.pickerView.hidden = NO;
self.btnDoneOutlet.hidden = NO;
[self.thePicker reloadAllComponents];
[self.view endEditing:YES]; // Hide keyboard
NSLog(#"****current array**** %#",currentArray);
return NO;
}

Answer 2

currentArray is assigned value in textFieldShouldBeginEditing but it is not initialized anywhere in your code.
Just initialize currentArray in viewDidLoad like below:
currentArray = [NSArray new];