iphone – UISegmentedControl不更新视图

关于我正在构建的应用程序的一些信息：

我正在构建一个应用程序,我希望允许用户在注册公司订购产品.作为一项额外的服务,我想让他们看到他们所做的订单,甚至过滤订单的状态：所有订单,有效订单和交付订单.订单显示在UITableView中,我在标题视图中创建了一个UISegmentedControl来过滤订单.当该UISegmentedControl的selectedSegmentIndex发生更改时,它会执行NSPredicate来过滤数组并仅显示所需的顺序.

现在它工作得很好,除了一件事：当我选择另一个段时,我没有更新它的视图的UISegmentedControl.它的默认selectedSegmentIndex是’Active’,因为用户可能对活动订单最感兴趣,但当我将其更改为’All’时,tableview显示所有订单(因此谓词正在运行),但视图仍保留在相同的selectedSegmentIndex上.

我做了很多研究来解决这个问题,但没有答案解决了我的问题..我的代码：

- (UIView *) tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{

    if(section == 0) {
        UIView *headerView = [[UIView alloc] initWithFrame:CGRectMake(0.0f,0.0f,320,45)]; // x,y,width,height

        //label
        UILabel *title = [[UILabel alloc] initWithFrame:CGRectMake(0.0f,20)];
        title.text = @"Kies een filter...";
        [headerView addSubview:title];

        //segmentedcontrol
        NSArray *itemArray = [NSArray arrayWithObjects: @"Alle",@"Actief",@"Afgehandeld",nil];
        control = [[UISegmentedControl alloc] initWithItems:itemArray];
        [control setFrame:CGRectMake(0.0f,20.0f,320.0,35.0)];
        control.userInteractionEnabled = YES;
        control.tintColor = [UIColor blackColor];
        [control setEnabled:YES];
        [control addTarget:self action:@selector(changeFilter:) forControlEvents:UIControlEventAllEvents];
        [headerView addSubview:control];

        //label containing selected filter info
        UILabel *info = [[UILabel alloc] initWithFrame:CGRectMake(0.0f,55.0f,20)];
        if ([selectedFilterInfo isEqualToString:@"Alle"]) {
            info.text = @"Alle orders:";
        }
        else if ([selectedFilterInfo isEqualToString:@"Actief"]) {
            info.text = @"Alle actieve orders:";
        }
        else if ([selectedFilterInfo isEqualToString:@"Afgehandeld"]) {
            info.text = @"Alle afgehandelde orders:";
        }
        [headerView addSubview:info];

        headerView.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"bar.png"]];
        return headerView;
    }
}

以及它触发的动作：

- (void)changeFilter:(id)sender {
UISegmentedControl *segmentedControl = (UISegmentedControl *)sender;
if (segmentedControl.selectedSegmentIndex == 0) {
    selectedFilterInfo = @"Alle";
    filteredArray = nil;
    [segmentedControl reloadInputViews];
    [segmentedControl setSelectedSegmentIndex:0];
}

else if (segmentedControl.selectedSegmentIndex == 1) {
    NSPredicate *deliveredpredicate = [NSPredicate predicateWithFormat:@"SELF.delivered contains[c] %@",@"0"];
    NSMutableArray *notDeliveredArray = [NSMutableArray arrayWithArray:[sortedArray filteredArrayUsingPredicate:deliveredpredicate]];
    filteredArray = [NSMutableArray arrayWithArray:notDeliveredArray];
    selectedFilterInfo = @"Actief";
    [segmentedControl reloadInputViews];
    [segmentedControl setSelectedSegmentIndex:1];
}

else if (segmentedControl.selectedSegmentIndex == 2) {
    NSPredicate *deliveredpredicate = [NSPredicate predicateWithFormat:@"SELF.delivered contains[c] %@",@"1"];
    NSArray *deliveredArray = [sortedArray filteredArrayUsingPredicate:deliveredpredicate];
    filteredArray = [NSMutableArray arrayWithArray:deliveredArray];
    selectedFilterInfo = @"Afgehandeld";
    [segmentedControl reloadInputViews];
    [segmentedControl setSelectedSegmentIndex:2];
}
[self.tableView reloadData];

}

我没有包含numberOfCellsInSection等,因为tableview部分工作正常.唯一不起作用的是更新视图.

任何解决方案都会非常感激,谢谢大家！