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Editorial Team
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Asked: 2026-05-24T05:58:04+00:00

I have a UITableView for different datas. When the user select one row, then

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I have a UITableView for different datas. When the user select one row, then I will popup a UIPickerView to let the user select some values. And I have implemented the numberOfComponentsInPickerView DataSource method to return the number of components for different row in the UITableView. actually they are all 1.

But now, I will download more data from the internet and add more rows in the UITableView. I called [pickerView reloadAllComponents] after finishing the downloading. I expected the numberOfComponentsInPickerView will be called so I can have more components in the picker view for the new rows in UITableView. But it’s not working.

How can I do that? thanks.

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1 Answer

  1. Editorial Team

    I found a solution for my problem. Instead of trying to make the UIPickerView reload and change the number of components dynamically, I use two UIPickerView, one has 1 component, and the other has two. And I will switch between these two when the user select different rows of data in the tableview.

    Hope this can help if other people has similar need.

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