Question

我可以将一个UIPickerView与多个UITextField一起使用，还是应该创建多个pickerviews，每个UITextField一个（我在同一个视图中拥有所有UITextField）？

Answer 1

-(void)textFieldDidBeginEditing:(UITextField *)textField
{
    if (textField1.editing == YES)
    {
        textFieldName=textField1;
    }
    else
        if (textField2.editing == YES)
        {
            textFieldName=textField2;
        }
}

Answer 2

使用数组列表视图，然后获取位置。

Answer 3

请全局声明此textFieldName：

NSString * textFieldName;

didLoad中的分配：

- (void)viewDidLoad
{
    [super viewDidLoad];
    [pickerView setHidden:YES];

    textFieldName=[NSString alloc]init];

    pickerArray1 = [[NSMutableArray alloc] initWithObjects:@"apple", @"mango", @"banana", nil];

    pickerArray2 = [[NSMutableArray alloc] initWithObjects:@"black", @"white", @"green", nil];
}

请在textFieldName字符串中设置文本字段名称：

-(void)textFieldDidBeginEditing:(UITextField *)textField{
    [pickerView setHidden:YES];
    if (textField1.editing == YES)
    {
        textFieldName=textField1;
        [pickerView setHidden:NO];
    }
    else
        if (textField2.editing == YES)
        {
            textFieldName=textField2;
            [pickerView setHidden:NO];
        }
    }

然后使用此textFieldName检查pickerview方法：

- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView;
{
    return 1;
}

- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component;
{
    if (textFieldName isEqualToString:@"textField1")
    {
        return [pickerArray1 count];
    }
    else
        if (textFieldName isEqualToString:@"textField2")
        {
            return [pickerArray2 count];
        }
    }

- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component;
{
    if (textFieldName isEqualToString:@"textField1")
    {
        return [pickerArray1 objectAtIndex:row];
    }
    else
        if (textFieldName isEqualToString:@"textField2")
        {
            return [pickerArray2 objectAtIndex:row];
        }
    }

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
    if (textFieldName isEqualToString:@"textField1")
    {
        textField1.text= [pickerArray1 addObjectAtIndex:row];
    }
    else
        if (textFieldName isEqualToString:@"textField2")
        {
            textField2.text= [pickerArray2 addObjectAtIndex:row];
        }
        [pickerView setHidden:YES];
    }

Answer 4

我认为一个具有多个文本字段的Picker视图就足够了。您可以轻松标记文本字段并根据需要进行处理。

Multiple sources for UIPickerView on textfield editing

http://www.iphonedevsdk.com/forum/iphone-sdk-tutorials/12952-tutorial-uipickerview-basics-basic-tip-calculator.html

将帮助您入门

一个带有多个文本字段的UIPickerView

4 个答案: