uisegmentedcontrol 未检测到某些段上的触摸

Posted 2023-03-11

【中文标题】uisegmentedcontrol 未检测到某些段上的触摸

【英文标题】：uisegmentedcontrol doesn't detect touch on certain segments

【发布时间】：2011-11-07 19:46:07

【问题描述】：

我在水平滚动的 uiscrollview 中有一个 uisegmentedcontrol。滚动视图工作正常，内容根据分段控件的宽度调整大小。分段控件检测对首次显示时可见的那些段的触摸。如果我向右滚动，我将无法选择新显示的段。 cuttof 也不完全是一个片段，它最初显示的是什么，就像有一个视图剪辑它一样。感谢您的帮助，我已从滚动视图中取消选择剪辑子视图。

// 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];

【参考方案1】：

已修复，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);

之前

self.testSegment = segmentedControl;