Question

我有一个UISegmentedControl，它有6个我在Interface Builder中创建的段。我在更改值时调用以下方法：

-(IBAction)segmentedChartButtonChanged:(id)sender
{
    switch (self.segmentedChartButton.selectedSegmentIndex) {
        case 0:
            NSLog(@"5d selected. Index: %d", self.segmentedChartButton.selectedSegmentIndex);
            break;
        case 1:
            NSLog(@"3m selected. Index: %d", self.segmentedChartButton.selectedSegmentIndex);
            break;
        default:
            break;
    }
}

每当我更改细分时，selectedSegmentIndex is always 0。这是为什么？

Answer 1

IBOutlet很可能没有连接。检查一下。您还可以使用传递给方法的sender。

UISegmentedControl * segmentedControl = (UISegmentedControl *)sender;
switch (segmentedControl.selectedSegmentIndex) {
    ....

Answer 2

你好这样试试

-(IBAction)segmentedChartButtonChanged:(id)sender
 {
 UISegmentedControl *segment=(UISegmentedControl*)sender;
switch (segment.selectedSegmentIndex) {
    case 0:
        NSLog(@"5d selected. Index: %d", self.segmentedChartButton.selectedSegmentIndex);
        break;
    case 1:
        NSLog(@"3m selected. Index: %d", self.segmentedChartButton.selectedSegmentIndex);
        break;
    default:
        break;
}

}

Answer 3

为UISegmentedControl取一个插座，然后像这样处理，

if (self.paymentSegmentButton.selectedSegmentIndex ==0)
{
    NSLog(@"first view ");

}
else
{
    NSLog(@"payment initiation");
    addVC = [[UIStoryboard storyboardWithName:@"Main" bundle:nil]instantiateViewControllerWithIdentifier:@"secondView"];

    [self.navigationController pushViewController:addVC animated:YES];

       }

我希望它有助于某人。

UISegmentedControl选择索引始终为0？

3 个答案: