//左右轨的图片
// UIImage *stetchLeftTrack= [UIImage imageNamed:@"zan-jidian.png"];
// UIImage *stetchRightTrack = [UIImage imageNamed:@"zan-jidian.png"];
// [self.timeProgress setMinimumTrackImage:stetchLeftTrack forState:UIControlStateNormal];
// [self.timeProgress setMaximumTrackImage:stetchRightTrack forState:UIControlStateNormal];
//滑块图片
UIImage *thumbImage = [UIImage imageNamed:@"jindu.png"];
//注意这里要加UIControlStateHightlighted的状态,否则当拖动滑块时滑块将变成原生的控件
[self.timeProgress setThumbImage:thumbImage forState:UIControlStateHighlighted];
[self.timeProgress setThumbImage:thumbImage forState:UIControlStateNormal];
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