我有一个自定义滑块,当我来回滑动它时,轨道图像似乎会左右移动一点。有谁知道为什么会这样?
UIImage *stetchLeftTrack = [[UIImage imageNamed:highBar] stretchableImageWithLeftCapWidth:capLeft topCapHeight:0.0];
UIImage *stetchRightTrack = [[UIImage imageNamed:grooveBar] stretchableImageWithLeftCapWidth:capRight topCapHeight:0.0];
[customSlider setThumbImage: [UIImage imageNamed:thb] forState:UIControlStateNormal];
[customSlider setThumbImage: [UIImage imageNamed:thbH] forState:UIControlStateHighlighted];
[customSlider setMinimumTrackImage:stetchLeftTrack forState:UIControlStateNormal];
[customSlider setMaximumTrackImage:stetchRightTrack forState:UIControlStateNormal];