如何在for循环中为文本字段实现UIPickerView？

Question

I am displaying text fields in a UIView dynamically, based on JSON response data using a for loop.

I need to show a UIPickerView for the each text field in the for loop, but it is only working for the last text field. I am unable to display a UIPickerView for each of the text fields. Can anyone please help me to solve this issue?

Answer 1

So you are inside your for loop with an i index. What we are looking here is to assign a UIPickerView as each textfield's input view . Try something like this...

//FOR LOOP BEGINS

  //Iteration - Create a textfield.
  [self.view addSubview:yourTextfield];

  //Assign a uipickerview as textfield's input view.  
  UIPickerView *pickerView = [[UIPickerView alloc] init];
  pickerView.frame = CGRectMake(0,0,300,300);
  pickerView.tag = i;
  pickerView.delegate = self;
  pickerView.showsSelectionIndicator = YES;
  textField.inputView = pickerView;
  [self.view addSubview:pickerView];

  //Iteration ends

//FOR LOOP ENDS

PS You can also add a toolbar with each pickerView to your textfield using the inputAccessoryView

Answer 2

You can set the number of rows to a large number, and make it start at a high value, there's little chance that the user will ever scroll the wheel for a very long time -- And even then, the worse that will happen is that they'll hit the bottom. you can see this: How do you make an UIPickerView component wrap around?