Similar to how amazon does for selecting quantity of an item. I want it to then save the number to display in another tableview. Here is the code I have for my .m file. When I click on the text field the picker is empty.
#interface ApparelViewController ()
#property(nonatomic, readonly) NSInteger numberOfComponents;
#end
#implementation ApparelViewController
- (void)viewDidLoad {
[super viewDidLoad];
UIPickerView *picker = [[UIPickerView alloc] init];
self.quantity.inputView = picker;
//creating the arrays for the values in the picker wheel
self.quantity0 = #[#1, #2, #3, #4, #5];
}
//custom picker in text field
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView {
return 1;
}
-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component {
return self.quantity0.count;
}
-(NSString *)pickerView:(UIPickerView *)pickerView titleForRow: (NSInteger)row forComponent:(NSInteger)component {
return self.quantity0[row];
}
-(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component {
self.quantity.text = self.quantity0[row];
[self.quantity resignFirstResponder];
}
Looks like you forgot to set the UIPicker's delegate to self.
In your viewDidLoad, try this:
picker.delegate = self;
Related
I have a UIPickerView that shows up in storyboard but is invisible or at best a colored block if I change the background color when I compile the program. Do I need to populate it with data for it to display, i.e. does it no longer show Cupertino, Mountain View etc. once compiled?
BTW, I am trying to populate picker view with data but still invisible:
code:
in .h file:
#interface pickerVC : UIViewController<UIPickerViewDelegate,UIPickerViewDataSource>
#property (weak, nonatomic) IBOutlet UIPickerView *pickerView;
#property (strong, nonatomic) IBOutlet UILabel *color;
#property (strong, nonatomic) NSArray *myArray;
in viewdidload;
UIPickerView *pickerView;
pickerView.delegate = self;
_myArray = [[NSArray alloc] initWithObjects:#"Blue",#"Green",#"Orange",#"Purple",#"Red",#"Yellow" , nil];
//PICKER METHODS
// tell the picker how many rows are available for a given component
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component {
// NSUInteger numRows = 3;
return _myArray.count;
}
// tell the picker how many components it will have
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView {
return 1;
}
// tell the picker the title for a given component
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
NSString *title;
title = _myArray[row];
return title;
}
// tell the picker the width of each row for a given component
- (CGFloat)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component {
int sectionWidth = 300;
return sectionWidth;
}
- (void)pickerView:(UIPickerView *)pickerView didSelectRow: (NSInteger)row inComponent:(NSInteger)component{
NSLog(#"Selected Row %d", row);
switch(row){
// Handle the selection
}
yes, you need to implement the data source and picker view delegates.
Yes it is not displaying. You have to set delegate and datasource of picker view and implement delegate methods in your controller.m file.
e.g.
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 1;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
return 10;
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
return #"ABC";
}
First of all add this
<UIPickerViewDelegate,UIPickerViewDataSource> in your .h file
after that add there Delegate Methods
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 1;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
return 5;
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
return #"xyz";
}
I want to use picker view to display 12 digits in it that digit comes dynamic and it has to be light flight schedule display . Digits will be increasing always that i want to make it through picker. As i am new to IOS need your help. Thank you
#import "DetailViewController.h"
#interface DetailViewController ()<UIPickerViewDataSource,UIPickerViewDelegate>
#end
#implementation DetailViewController
- (void)viewDidLoad {
[super viewDidLoad];
UIPickerView *pickerview = [[UIPickerView alloc]init];
pickerview.delegate = self;
pickerview.dataSource = self;
[self.view addSubview:pickerview];
}
- (void)pickerView:(UIPickerView *)pV didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
}
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 1;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
return 12;
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
NSNumber *digit = #(row);
return [digit stringValue];
}
#end
You can use Simple Library and Then Add array of Digits .
here are Few Simple Library , try it once.
CPPickerView
ActionSheetPicker-3.0
AKPickerView
Let me preface by saying that I am completely new to programming. I have also done a bunch of searching on this issue and haven't found an answer that seems to address exactly what I am doing.
The result I am looking for is a text field that can be populated by the user by using a pickerView. After putting a UITextView box in the .xib file I am not sure how make it call a pickerView when tapped and then populate from that picker view.
Thank you for any help given. Let me know if I need to clarify more.
Create a UIPickerView and set it as the inputView property of your UITextView. Then, register your class for the dataSource/delegate of the UIPickerView to populate it and know when it has changed selection. Below is a simple solution for a picker with a single component.
SomeViewController.h:
#interface SomeViewController : UIViewController <UIPickerViewDataSource, UIPickerViewDelegate>
{
UIPickerView *picker;
NSArray *dataSource;
}
SomeViewController.m:
- (void)viewDidLoad
{
[super viewDidLoad];
picker = [[UIPickerView alloc] init];
picker.dataSource = self;
picker.delegate = self;
myTextView.inputView = picker;
}
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 1;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
return [dataSource count];
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
return [dataSource objectAtIndex:row];
}
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
[myTextView setText:[dataSource objectAtIndex:row]];
}
I am trying to create a PickerView view programatically.
I have followed all of the necessary steps however the picker just simply appears and then disappears straight away. No data can be seen.
I am setting the delegate and data source and I have implemented the necessary methods.
Here is my code:
in .h
#interface NJATimeEntryViewController : UIViewController <UIPickerViewDelegate, UIPickerViewDataSource>
#property (nonatomic, strong) UIPickerView *customerPicker;
#property (nonatomic, strong) NSArray *pickerTitles;
#end
in .m
- (void)viewDidLoad
{
[super viewDidLoad];
self.pickerTitles = #[#"ONE", #"TWO", #"THREE"];
self.customerPicker = [[UIPickerView alloc] initWithFrame:CGRectMake(0, 200, 320, 200)];
self.customerPicker.dataSource = self;
self.customerPicker.delegate = self;
[self.view addSubview:self.customerPicker];
}
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 1;
}
-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
return self.pickerTitles.count;
}
-(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
return [[self pickerTitles] objectAtIndex:row];
}
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
NSLog(#"Selected Row %d", row);
}
All help is appreciated thanks.
FIXED:
All i did was set the background color of the view controllers view and now it works. I see this as a bug as no where is it stated that the background color has to be set.
Set Some Background color ( except black )of your view, then try,
self.view.backgroundColor=[UIColor yellowColor];
I am using UIPickerView with UITextField. It is working when I use only one UITextField.
What I want is to use multiple TextField for one dynamic pickerview.
- (void)viewDidLoad
{
[super viewDidLoad];
picker = [[UIPickerView alloc] init];
picker.dataSource = self;
picker.delegate = self;
self.transitTF.inputView = picker;
self.theData = #[#"one",#"two",#"three",#"four"];
}
-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component {
return self.theData.count;
}
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView {
return 1;
}
-(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
return self.theData[row];
}
-(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component {
self.transitTF.text = self.theData[row];
[self.transitTF resignFirstResponder];
}
This is what I use with one textField only.
Any help will be appreciated. Thanks.
Add tag property for each UITextField. In this case self.pickerView.inputView.tag you may use to find which textfield is using in current moment and you may fill picker with correct values