Iphone uisegmentedcontrol不'；在某些区段上检测不到触摸

我在水平滚动的uiscrollview中有一个uisegmentedcontrol。scrollview工作正常，内容根据segmentedcontrol的宽度调整大小。分段控件检测第一次显示时可见的那些分段上的触摸。如果向右滚动，则无法选择新显示的分段。cuttof也不完全是一个片段，它是最初显示的内容，就像有一个视图在剪辑它一样。感谢您的帮助，我已经从scrollview中取消选择了剪辑子视图

// creates segmented control to indicate test to show on graph

    UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:self.labels];
    segmentedControl.frame = CGRectMake(15, 41, 285, 30);
    segmentedControl.autoresizingMask = 
    segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;
    segmentedControl.selectedSegmentIndex = 0;
    segmentedControl.autoresizingMask = UIViewAutoresizingFlexibleWidth;
    [segmentedControl addTarget:self action:@selector(testChange:) forControlEvents:UIControlEventValueChanged];

    //checks the length of the text in each segment and asjusts control accordingly
    int x = 0;
    segmentWidth = 0.0;
    for (id segment in [segmentedControl subviews]) 
    {
        for (id label in [segment subviews]) 
        {
            if ([label isKindOfClass:[UILabel class]])
            {

                [label setTextAlignment:UITextAlignmentCenter];
                [label setFont:[UIFont boldSystemFontOfSize:12]];

                CGFloat textWidth = [[segmentedControl titleForSegmentAtIndex:x] sizeWithFont:[UIFont boldSystemFontOfSize:12.0]].width + 20;
                [segmentedControl setWidth:textWidth forSegmentAtIndex:x];
                segmentWidth += textWidth;
            }
        }
        x++;
    }

    self.testSegment = segmentedControl;
    [segmentedControl release];

    //adds segmentedcontroll to scrollview, and adjusts contensize
    [scrollView setContentSize:CGSizeMake(segmentWidth + 45, scrollView.frame.size.height)];
    [scrollView showsHorizontalScrollIndicator];
    [scrollView addSubview:testSegment];

---

修正了，问题是我在计算每个段的宽度之前设置了分段控件的框架

segmentedControl.frame = CGRectMake(15, 41, segmentWidth+20, 30);

以前

self.testSegment = segmentedControl;