自定义UISlider图像消失了吗？

Question

大家好，我有一个自定义图像来替换UISLider defult按钮图像，所有工作正常的图像显示，它不会被剪掉。问题是，当我使用滑块上下移动图像消失时，有些如何有时不再出现。有人可以解决吗？

CGRect rect = CGRectMake(16.0, 390.0, 297.0, 35.0);
slider.frame = rect;

UIImage* thumbImage = [UIImage imageNamed:@"thumb.png"];   
[slider setThumbImage:thumbImage forState:UIControlStateNormal];

UIImage* leftImage = [UIImage imageNamed:@"SliderLeft.png"];   
[slider setMinimumTrackImage:leftImage forState:UIControlStateNormal];   

UIImage* rightImage = [UIImage imageNamed:@"SliderRight.png"];
[slider setMaximumTrackImage:rightImage forState:UIControlStateNormal];

Answer 1

我相信你也需要设置突出显示的状态图像：

[slider setThumbImage:thumb forState:UIControlStateNormal];     
[slider setThumbImage:thumb forState:UIControlStateHighlighted];