如何在UISlider上放置图像？

Question

我必须放置滑块并想要在滑块上放置图像。我想要的滑块就是这个

有谁帮我？

Answer 1

请参阅UISlider class reference。您想设置setThumbImage:forState:以及setMinimumTrackImage:forState:和setMaximumTrackImage:forState:。对最小和最大曲目图像使用相同的图像，并使用UIControlStateNormal作为状态。

Answer 2

下面的代码将在ViewWillAppear ...

中

-(void)viewWillAppear:(BOOL)animated
{
    slider.backgroundColor = [UIColor clearColor];  
    UIImage *stetchLeftTrack = [[UIImage imageNamed:@"yellowslide.png"]
                                stretchableImageWithLeftCapWidth:10.0 topCapHeight:0.0];
    UIImage *stetchRightTrack = [[UIImage imageNamed:@"yellowslide.png"]
                                 stretchableImageWithLeftCapWidth:10.0 topCapHeight:0.0];
    [slider setThumbImage: [UIImage imageNamed:@"1.PNG"] forState:UIControlStateNormal];
    [slider setMinimumTrackImage:stetchLeftTrack forState:UIControlStateNormal];
    [slider setMaximumTrackImage:stetchRightTrack forState:UIControlStateNormal];
    slider.minimumValue = 1.0;
    slider.maximumValue = 3.0;
    slider.continuous = YES;
    slider.value = 0.0;
}