UIPickerView reloadData

Question

I'm changing components (in particular, the number and color of components), in a UIPickerView that I call pickerOne, so after making the changes, I call:

[pickerOne reloadData];

and it appears to be working perfectly however, I'm getting a compile warning:

warning: 'UIPickerView' may not respond to '-reloadData'

Although this appears to work, is there something else that I should use to reload data?

Thanks

I believe the confusion stemmed from UITableView which has reloadData but UIPickerView doesn't (as per others' answers below). — Michael Osofsky, Sep 07 '14 at 05:06

score 38 · Accepted Answer · answered Jul 08 '10 at 18:53

38

I think you should be using:

reloadComponent:

or

reloadAllComponents:

answered Jul 08 '10 at 18:53

Avalanchis

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yup, no ugly warning across my code and works just as well. thank you very much – Matt Winters Jul 08 '10 at 18:57
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Just a note - reloadAllComponents does not accept an argument. So it should probably read: reloadAllComponents instead. – Brian Sachetta Mar 31 '15 at 21:40

score 4 · Answer 2 · answered Jul 08 '10 at 18:54

4

You should be calling reloadComponent: or reloadAllComponents:.

There may be a private reloadData used under the covers, but it's not part of the public API, and therefore, shouldn't be relied upon.

answered Jul 08 '10 at 18:54

MarkPowell

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2 identical answers within 3 minutes, I guess I should have known this. Thank you. – Matt Winters Jul 08 '10 at 18:59

score 1 · Answer 3 · edited Oct 29 '12 at 11:28

1

I think you should be using: reloadComponent or reloadAllComponents.

But these methods are useless unless you connect UIPickerViewDalegate and UIPickerViewDataSource to file owner.

edited Oct 29 '12 at 11:28

atxe

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answered Mar 16 '12 at 12:15

Muhammad Yaseen Khan

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Welcome to Stack Overflow. This question has already been answered with the same information you have written here. If you want to add something to their answers, you can put it in a comment under it. :) – Emil Mar 16 '12 at 12:42

UIPickerView reloadData

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