Question

我有一个UIPicker，我正在通过一个数组开发。在我的数组中，我目前正在保存10个值和UIPicker计数数组的行数，然后Picker显示10个值。但我的问题是，当我滚动UIPicker时，我希望在第10行滚动后新行应自动添加填充的值。实际上我已经在一个动作表中添加了选择器。这是我的代码，通过它我可以在选择器中加载数据。

- (void)viewDidLoad 
{   
    currentData = [[NSMutableArray alloc]initWithObjects:@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",@"10",nil];
    [super viewDidLoad];
}

 #pragma mark  UIPickerViewDelegate Methods
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
    return 1;
}
-(NSInteger)pickerView:(UIPickerView*)pickerView numberOfRowsInComponent:(NSInteger)component
{
    int count;  
    if ([pickerType isEqualToString:@"picker"])
    {
        count = [currentData count];
    }

    return count;
}
-(NSString*)pickerView:(UIPickerView*)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
    NSString *string;
    if ([pickerType isEqualToString:@"picker"])
    {
        NSString *str = @"miles";
        //string = [NSString stringWithFormat:@"%d",[currentData objectAtIndex:row],@"%@",str];
        string = [NSString stringWithFormat:@"%@" @"%@",[currentData objectAtIndex:row],str];
        NSLog(@"%@",string);
    }   
    return string;
}
-(CGFloat)pickerView:(UIPickerView*)pickerView widthForComponent:(NSInteger)component
{
    return 300;
}
-(void)pickerView:(UIPickerView*)thePickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
    select = YES;       
    if([barItems objectAtIndex:2]!=0)
    {                   
    if ([pickerType isEqualToString:@"picker"])
    {
        sessoTxt.text = [currentData objectAtIndex:row];
    }                   
}
    else{
        sessoTxt.text = @"Select";
    }    
}

如何在最后一个数组值之后滚动选择器动态增量。谢谢

Answer 1

您可以查看http://forums.macrumors.com/showthread.php?p=6120638&highlight=UIPickerView#post6120638

在iphone中滚动时如何增加uipicker的行数

1 个答案: