直播软件开发，渐变色任务进度条

直播软件开发，渐变色任务进度条实现的相关代码

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[_slider setMinimumTrackImage:getGradientImageWith(@[LightBlue3,BLUECOLOR], CGRectMake(0, 0, ScreenWidth - 75 * rectScale(), 10 * rectScale()), CGPointMake(0, 0.5), CGPointMake(1, 0.5)) forState:UIControlStateNormal];<br>UIImage* getGradientImageWith(NSArray *colors,CGRect rect,CGPoint start,CGPoint end){<br>    if (!colors.count || CGRectEqualToRect(rect, CGRectZero)) {<br>        return nil;<br>    }<br>    <br>    CAGradientLayer *gradientLayer = [CAGradientLayer layer];<br>    <br>    gradientLayer.frame = rect;<br>    gradientLayer.startPoint = start;<br>    gradientLayer.endPoint = end;<br>    NSMutableArray *mutColors = [NSMutableArray arrayWithCapacity:colors.count];<br>    for (UIColor *color in colors) {<br>        [mutColors addObject:(__bridge id)color.CGColor];<br>    }<br>    gradientLayer.colors = [NSArray arrayWithArray:mutColors];<br>    <br>    UIGraphicsBeginImageContextWithOptions(gradientLayer.frame.size, gradientLayer.opaque, 0);<br>    [gradientLayer renderInContext:UIGraphicsGetCurrentContext()];<br>    UIImage *outputImage = UIGraphicsGetImageFromCurrentImageContext();<br>    UIGraphicsEndImageContext();<br>    return outputImage;<br>}

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