I am using textFields inputView property to display UIPickerViews instead of the keyboard. The way I have it programmed, I do not declare the PickerViews in the .H file, or connect them in the view in interface builder. When I implement the properties of the pickerviews, I am not able to make each of them with different properties. I tried using "if" statements to tell it to have different properties depending on which picker was being used like follows....
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)agePickerView {
if ([pickerView isEqual: agePickerView]){
return 1;
}
if ([pickerView isEqual: weightPickerView]){
return 1;
}
}
When I do this though, It will say that weightPickerView is undeclared. So here is my code for implementing the pickerViews.
@implementation MainViewController
//WEIGHT FIELD CODE
-(IBAction)weightFieldDidBeginEditing{
UIPickerView *weightPickerView = [[UIPickerView alloc] init];
weightField.inputView = weightPickerView;
weightPickerView.showsSelectionIndicator = YES;
weightPickerView.delegate = self;
weightPickerView.dataSource = self;
[weightPickerView release];
UIToolbar *weightToolBar = [[UIToolbar alloc] initWithFrame:CGRectMake(0,0,320,44)];
UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(pickerDoneClicked:)];
[weightToolBar setItems:[NSArray arrayWithObject:doneButton] animated:NO];
weightField.inputAccessoryView = weightToolBar;
}
-(NSInteger)weightpickerView:(UIPickerView *)weightPickerView numberOfRowsInComponent: (NSInteger)component{
return [weightPickerArray count];
}
-(NSString *)weightpickerView:(UIPickerView*)weightPickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
return [weightPickerArray objectAtIndex:row];
}
// AGE FIELD CODE
-(IBAction)ageFieldDidBeginEditing{
UIPickerView *agePickerView = [[UIPickerView alloc] init];
ageField.inputView = agePickerView;
agePickerView.showsSelectionIndicator = YES;
agePickerView.delegate = self;
agePickerView.dataSource = self;
[agePickerView release];
UIToolbar *ageToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0,0,320,44)];
UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(pickerDoneClicked:)];
[ageToolbar setItems:[NSArray arrayWithObject:doneButton] animated:NO];
ageField.inputAccessoryView = ageToolbar;
}
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)agePickerView {
return 1;
}
-(NSInteger)pickerView:(UIPickerView *)agePickerView numberOfRowsInComponent: (NSInteger)component {
return [agePickerArray count];
}
-(NSString *)pickerView:(UIPickerView*)agePickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
return [agePickerArray objectAtIndex:row];
}
-(void)pickerView:(UIPickerView *)agePickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component{
ageField.text = (NSString *) [agePickerArray objectAtIndex:row];
}
-(void)pickerDoneClicked:(id)sender{
[ageField resignFirstResponder];
[weightField resignFirstResponder];
}
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
agePickerArray = [[NSMutableArray alloc] init];
for (int age=1; age<=100; age++) {
NSString *ageString = [NSString stringWithFormat:@"%d%",age];
[agePickerArray addObject:ageString];
weightPickerArray = [[NSMutableArray alloc] init];
for (int weight = 50; weight<=500; weight++) {
NSString *weightString = [NSString stringWithFormat:@"%d%",weight];
[weightPickerArray addObject:weightString];
}
}
Is there any other way to do what I am trying to do , because that way is not working... And if i just try and redo the implementation for each picker view i get the errors of "redefinition of...""numberOfRowsInComponent"" or which ever other property i am doing. Please help, even if I have to change it and declare the pickerViews in the .H file somehow, I don't care what I have to do as long as I can get this to work!!
THANKS
UPDATE!!!
@interface MainViewController : UIViewController <FlipsideViewControllerDelegate,UITextFieldDelegate,UIPickerViewDelegate,UIPickerViewDataSource> {
IBOutlet UITextField*ageField;
NSMutableArray *agePickerArray;
IBOutlet UITextField*weightField;
NSMutableArray *weightPickerArray;
UIPickerView *weightPickerView;
UIPickerView *agePickerView;
}
- (IBAction)ageFieldDidBeginEditing;
- (IBAction)weightFieldDidBeginEditing;
- (IBAction)showInfo:(id)sender;
- (IBAction)activityButtonClicked;
@end
.m file
-(IBAction)weightFieldDidBeginEditing{
//UIPickerView *weightPickerView = [[UIPickerView alloc] init];
weightField.inputView = weightPickerView;
weightPickerView.showsSelectionIndicator = YES;
weightPickerView.delegate = self;
weightPickerView.dataSource = self;
[weightPickerView release];
UIToolbar *weightToolBar = [[UIToolbar alloc] initWithFrame:CGRectMake(0,0,320,44)];
UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(pickerDoneClicked:)];
[weightToolBar setItems:[NSArray arrayWithObject:doneButton] animated:NO];
weightField.inputAccessoryView = weightToolBar;
}
-(NSInteger)weightpickerView:(UIPickerView *)weightPickerView numberOfRowsInComponent:(NSInteger)component{
return [weightPickerArray count];
}
-(NSString *)weightpickerView:(UIPickerView*)weightPickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
return [weightPickerArray objectAtIndex:row];
}
// AGE FIELD CODE
-(IBAction)ageFieldDidBeginEditing{
//UIPickerView *agePickerView = [[UIPickerView alloc] init];
ageField.inputView = agePickerView;
agePickerView.showsSelectionIndicator = YES;
agePickerView.delegate = self;
agePickerView.dataSource = self;
[agePickerView release];
UIToolbar *ageToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0,0,320,44)];
UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(pickerDoneClicked:)];
[ageToolbar setItems:[NSArray arrayWithObject:doneButton] animated:NO];
ageField.inputAccessoryView = ageToolbar;
}
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)agePickerView {
return 1;
}
-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component {
if ([pickerView isEqual: agePickerView]) {
return [agePickerArray count];
}
if ([pickerView isEqual:weightPickerView]) {
return [weightPickerArray count];
}
}
-(NSString *)pickerView:(UIPickerView*)agePickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
return [agePickerArray objectAtIndex:row];
}
-(void)pickerView:(UIPickerView *)agePickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component{
ageField.text = (NSString *) [agePickerArray objectAtIndex:row];
}
-(void)pickerDoneClicked:(id)sender{
[ageField resignFirstResponder];
[weightField resignFirstResponder];
}
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
agePickerArray = [[NSMutableArray alloc] init];
for (int age=1; age<=100; age++) {
NSString *ageString = [NSString stringWithFormat:@"%d%",age];
[agePickerArray addObject:ageString];
weightPickerArray = [[NSMutableArray alloc] init];
for (int weight = 50; weight<=500; weight++) {
NSString *weightString = [NSString stringWithFormat:@"%d%",weight];
[weightPickerArray addObject:weightString];
}
}
You need to declare that in your .h file (or interface).
Are you subclassing
UIPickerView
?Edit* If you don't want to declare those in your .h file for some reason, set a
tag
to your pickers.All of your
UIPickerView
s will be calling UIPickerViewDelegate methods, meaning-(NSInteger)weightpickerView:(UIPickerView *)weightPickerView numberOfRowsInComponent: (NSInteger)component
will not be called unless you are subclassing and creating your own methods (which I believe you are not), i.e.If you'd like to do it with tags;