iOS - UISlider 在第一次触摸时跳转

Question

我已将 UISlider 添加到我使用 Xcode 5.1 开发的 iOS 应用程序，但我无法摆脱以下烦人的行为。当我第一次触摸拇指时，它会稍微跳动。

这是一个详细说明行为的简单示例。

When the slider thumb is initially positioned to the left of the center (e.g. at the minimum value), it jumps to the right. If I run the app in the iOS simulator, the thumb jumps upon first touch without any dragging. The thumb always jumps towards the center of the track. The only time it does not jump is when it is at the precise center of the track. This behavior appears even when the slider is not connected to anything.

有什么方法可以禁用它吗？

Answer 1

今天刚遇到这个问题。出于某种原因，您必须设置一个自定义的缩略图，并且它有效。

[self.yourSlider setThumbImage:[UIImage imageNamed:@"customThumb"] forState:UIControlStateNormal];