自定义UISegmented控件

Question

我如何在iOS UISegmentedControl（Objective-C）

中实现此目的

我想显示所选分段控件的舍入选择。

任何帮助都会非常感激。

Answer 1

UISegmentedControl有一个customization部分。

总结如下： 您所要做的就是为不同的状态组合提供分频器图像。这意味着您需要为以下状态提供3个图像：

1. 两个未选定的片段之间的图像
2. 左侧选择的段与右侧未选中的段之间的图像
3. 在右侧选择的段和左侧未选中的段之间的图像

代码如下：

<强>目标C

// Image between two unselected segments.
[mySegmentedControl setDividerImage:image1 forLeftSegmentState:UIControlStateNormal
                  rightSegmentState:UIControlStateNormal barMetrics:barMetrics];
// Image between segment selected on the left and unselected on the right.
[mySegmentedControl setDividerImage:image1 forLeftSegmentState:UIControlStateSelected
                  rightSegmentState:UIControlStateNormal barMetrics:barMetrics];
// Image between segment selected on the right and unselected on the right.
[mySegmentedControl setDividerImage:image1 forLeftSegmentState:UIControlStateNormal
                  rightSegmentState:UIControlStateSelected barMetrics:barMetrics];

Swift

    // Image between two unselected segments.
    mySegmentedControl.setDividerImage(myImage, forLeftSegmentState: UIControlState.Normal,
                                       rightSegmentState: UIControlState.Normal, barMetrics: UIBarMetrics.Default)

    // Image between segment selected on the left and unselected on the right.
    mySegmentedControl.setDividerImage(myImage, forLeftSegmentState: UIControlState.Selected,
                                       rightSegmentState: UIControlState.Normal, barMetrics: UIBarMetrics.Default)

    // Image between segment selected on the right and unselected on the left.
    mySegmentedControl.setDividerImage(myImage, forLeftSegmentState: UIControlState.Normal,
                                       rightSegmentState: UIControlState.Selected, barMetrics: UIBarMetrics.Default)

这是一个post，解释了如何实现这一目标。

如果你看到链接的帖子那么是3张图片。附上截图供参考：