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iPhone：多个 UIPickerView

发布于 2024-11-04 09:02:51 字数 166 浏览 4 评论 0原文

我在 iPhone 应用程序中使用多个 UIPickerView 。我的问题是，如何处理多个 UIPickerView 处理事件？

另外，我想将选定的值放置在不同 UIPickerViews 的 UITextField 中。

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萧瑟寒风 2024-11-11 09:02:51

在每个委托中，您都有触发委托的 UIPickerView 的引用。例如：

-(void)PickerView 中的组件数量:(UIPickerView*)thePickerView

您有 thePickerView 变量指向响应此操作的控件，您现在需要做的就是区分您的UIPickerViews 如下：

 if (thePickerView == firstPickerView)

或者使用 Tag 属性

 if (thePickerView.tag == 1)

我会选择标签解决方案；比较 int 更快。

如何获取所选值：

至于 UIPickerView 的所选值，您可以使用委托来实现：

 -(void)pickerView:(UIPickerView *)thePickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component

您将需要使用这里使用相同的技术；区分您的 UIPickerView 并获取该数据源的选定行，然后就完成了

 MyTextField.text = [theSelectedListArray objectAtIndex:row];

In each delegate you have reference of the UIPickerView which got triggered the delegate. for instance:

-(void)numberOfComponentInPickerView:(UIPickerView*)thePickerView

You have thePickerView variable which points to the control responded to this action, all you need to do now is to distinguish between your UIPickerViews as the following:

 if (thePickerView == firstPickerView)

Or Using The Tag property

 if (thePickerView.tag == 1)

I would go with the tag solution; comparing int is way faster.

How do I get the selected value:

As for the selected value of UIPickerView you can do that by using the delegate:

 -(void)pickerView:(UIPickerView *)thePickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component

You will need to use the same technique here; distinguish between your UIPickerView and get the selected row for that data source and you are done

 MyTextField.text = [theSelectedListArray objectAtIndex:row];

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清风不识月 2024-11-11 09:02:51

- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component{
    NSInteger counter;
    if(pickerView==p1)
    {
        counter=[name count];
    }
    else
    {
        counter=[name2 count];
    }
    return counter;

}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component{
    if(pickerView==p1)
        return [name objectAtIndex:row];//name is NsMutable Array
    else
        return [name2 objectAtIndex:row];//name2 is NsMutable Array

}

- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component{
    NSInteger counter;
    if(pickerView==p1)
    {
        counter=[name count];
    }
    else
    {
        counter=[name2 count];
    }
    return counter;

}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component{
    if(pickerView==p1)
        return [name objectAtIndex:row];//name is NsMutable Array
    else
        return [name2 objectAtIndex:row];//name2 is NsMutable Array

}

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