UI_UISlider控件

#pragma mark - 创建控件 UISlider
- (void)createSlider
{
    // 也是继承与 UIControl
    UISlider *slider = [[UISlider alloc] initWithFrame:CGRectMake(40, 80, 260, 27)];

    // 设置颜色
    slider.backgroundColor = [UIColor blueColor];

    [self addSubview:slider];
    [slider release];

    // 设置最小值
    slider.minimumValue = 0.1;
    // 设置最大值
    slider.maximumValue = 1.0;

    // 绑定滑动事件
    [slider addTarget:self action:@selector(sliderAction:) forControlEvents:UIControlEventValueChanged];

}

- (void)sliderAction:(UISlider *)sender
{
    self.view.alpha = sender.value;

}