iphone - 自定义 slider 控件

Question

我想自定义 slider 控件但找不到任何可以应用的东西，我想制作的 slider 应该如下图所示。请任何人建议我怎么做....

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Answer 1

试试这段代码..

CGRect frame = CGRectMake(174, 12.0, 120.0, 40);
customSlider = [[UISlider alloc] initWithFrame:frame];
[customSlider addTarget:self action:@selector(sliderAction:) forControlEvents:UIControlEventValueChanged];
// in case the parent view draws with a custom color or gradient, use a transparent color
customSlider.backgroundColor = [UIColor clearColor];    
UIImage *stetchLeftTrack = [[UIImage imageNamed:@"orangeslide.png"]
                            stretchableImageWithLeftCapWidth:10.0 topCapHeight:0.0];
UIImage *stetchRightTrack = [[UIImage imageNamed:@"yellowslide.png"]
                             stretchableImageWithLeftCapWidth:10.0 topCapHeight:0.0];
[customSlider setThumbImage: [UIImage imageNamed:@"slider_ball.png"] forState:UIControlStateNormal];
[customSlider setMinimumTrackImage:stetchLeftTrack forState:UIControlStateNormal];
[customSlider setMaximumTrackImage:stetchRightTrack forState:UIControlStateNormal];
customSlider.minimumValue = 0.0;
customSlider.maximumValue = 100.0;
customSlider.continuous = YES;
customSlider.value = 50.0;

// Add an accessibility label that describes the slider.
[customSlider setAccessibilityLabel:NSLocalizedString(@"CustomSlider", @"")];
[self.view addSubview:customSlider];
customSlider.tag = 1;