InputView not working in TextFields inside UICollectionView

Question

Inside each of CollectionViewCells i have added UITextField, that need to take input from picker View.

So I'm assigning inputView as pickerView inside my CellForRowAtIndexPath. When i run the code the input view part is empty. Not having any pickerviews.

I realize the datasource methods are not getting invoked.

percentagePicker is created outlet on my ViewController

This is my cellForRowAtIndexPath method

    cell.cropPercent.text = [NSString stringWithFormat:@"%@",cropPercentagesList[indexPath.row];

    UIPickerView *pikerView = _percentagePicker;

    [_percentagePicker removeFromSuperview];

    pikerView.delegate =self;
    pikerView.dataSource = self;

    cell.cropPercent.textColor = [UIColor redColor];

    cell.cropPercent.inputView = pikerView;

As suggested in post https://stackoverflow.com/a/25882277/5215474 — Saranjith, Jul 19 '17 at 06:51

score 1 · Accepted Answer · answered Jul 19 '17 at 06:49

1

Instead of creating an outlet of UIPickerView and assigning it to the pickerView to show as inputView just try the code below.

    UIPickerView *pikerView = [[UIPickerView alloc]init];

    pikerView.delegate =self;
    pikerView.dataSource = self;

    cell.cropPercent.textColor = [UIColor redColor];

    cell.cropPercent.inputView = pikerView;

answered Jul 19 '17 at 06:49

Aravind A R

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How can i get the values in pickerviews if all are diffrent – Saranjith Jul 19 '17 at 06:56
You can specify tag to these pickerViews pickerView.tag = indexPath.row – Aravind A R Jul 19 '17 at 06:57
'NSInvalidArgumentException', reason: '*** -[__NSPlaceholderArray initWithObjects:count:]: attempt to insert nil object from objects[2]' This error is coming when i change item in picker before didselect delegate gets invoked – Saranjith Jul 19 '17 at 07:10
I'm sorry I didn't get you. Could you please explain the scenario which is causing this error ? – Aravind A R Jul 19 '17 at 07:15
when i change selection in my pickerView – Saranjith Jul 19 '17 at 07:16
Could you please post the code inside the didselect delegate ? – Aravind A R Jul 19 '17 at 07:19
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/149551/discussion-between-saranjith-and-aravind-a-r). – Saranjith Jul 19 '17 at 07:20

NotABot · Answer 2 · 2017-07-19T07:22:25.767

You should move your pickerView code to viewDidLoad since it's in your viewController. Don't create an instance of new UIPickerView;

- (void) viewDidLoad
 {
     [super viewDidLoad];

    _percentagePicker.delegate =self;
    _percentagePicker.dataSource = self;
 }

In your cellForRow just do this and remove other UIPickerView code:

cell.cropPercent.inputView = pikerView;
yourPickerDataSourceArray = yourSource[indexPath.row];
[percentagePicker reloadAllComponents];

InputView not working in TextFields inside UICollectionView

2 Answers2