Edit 2 uitextfield by turn with a select in uipickerview - iphone

Question

I have 2 instances of UITextField and 1 instance of UIPickerView. UIPickerView is able to update data into
UITextField in didSelectRow:(NSInteger)row inComponent:(NSInteger)component. But how do I update 2 UITextField from UIPickerView when the user touch the UITextView?
Thanks. :)

Answer 1

you will need to make the UIPickerView the inputView of the textfields, i have made an example.
.h file:
#interface aViewController : UIViewController <UIPickerViewDelegate,UIPickerViewDataSource> {
UITextField * textField0;
UITextField * textField1;
UIPickerView * pickerView;
UIToolbar * toolBar;
NSArray * items0;
NSArray * items1;
}
-(void)cancel;
-(void)close;
#end
.m need something like the following:
- (void)viewDidLoad
{
[super viewDidLoad];
textField0 = [[UITextField alloc] initWithFrame:CGRectMake(10.f, 20.0f, 100.f, 30.f)];
textField1 = [[UITextField alloc] initWithFrame:CGRectMake(130.f, 20.0f, 100.f, 30.f)];
textField0.backgroundColor = [UIColor grayColor];
textField1.backgroundColor = [UIColor grayColor];
pickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0, 0, 320.f, 200.f)];
// Do any additional setup after loading the view from its nib.
[self.view addSubview:textField0];
[self.view addSubview:textField1];
toolBar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 320.f, 44.f)];
UIBarButtonItem * cancelButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:#selector(cancel)];
UIBarButtonItem * doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:#selector(close)];
toolBar.items = [NSArray arrayWithObjects:doneButton,cancelButton, nil];
items0 = [[NSArray alloc] initWithObjects:#"dogs",#"cats",#"llamas",#"emus", nil];
items1 = [[NSArray alloc] initWithObjects:#"bone",#"catnip",#"hay", nil];
[doneButton release];
[cancelButton release];
pickerView.showsSelectionIndicator = YES;
pickerView.delegate = self;
pickerView.dataSource = self;
textField1.inputView = pickerView;
textField0.inputView = pickerView;
textField1.inputAccessoryView = toolBar;
textField0.inputAccessoryView = toolBar;
}
#pragma mark - actions
-(void)cancel
{
//reset the values to the original values on cancel...
//do that here.
[textField0 resignFirstResponder];
[textField1 resignFirstResponder];
}
-(void)close
{
textField0.text = [items0 objectAtIndex:[pickerView selectedRowInComponent:0]] ;
textField1.text = [items1 objectAtIndex:[pickerView selectedRowInComponent:1]] ;
[textField0 resignFirstResponder];
[textField1 resignFirstResponder];
}
#pragma mark - pickerview handling
-(float)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component{
return 130.f;
}
-(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
if (component==0) {
return [items0 objectAtIndex:row];
}
return [items1 objectAtIndex:row];
}
-(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
if (component==0) {
textField0.text = [items0 objectAtIndex:row];
return;
}
textField1.text = [items1 objectAtIndex:row];
}
-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
if (component ==0) {
return [items0 count];
}
return [items1 count];
}
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 2;
}
I haven't included any clean-up code.