iphone/ipad 自定义 UISlider 控制器

Question

在这里，我想创建一个自定义的 uislider，它类似于媒体播放器向前和向后，即以特定时间间隔以编程方式移动滑块。

例如，考虑到我有一个视频，我需要实现控制器的滑块来向前和向后移动视频内容。

任何示例和教程。

谢谢....

Answer 1

这里有一段代码，可以像 moviePlayerController 一样用作进度条

我希望这段代码会对您有所帮助

// .M 

@property (nonatomic,strong)UISlider *slider1;

- (void)viewDidLoad
{
    [super viewDidLoad];

    slider1 = [[UISlider alloc] initWithFrame:CGRectMake(10, 400, 300,30)];

    [slider1 setBackgroundColor:[UIColor clearColor]];
    slider1.maximumValue =  1.0;
    slider1.minimumValue = 0.0;
    slider1.continuous = YES;
    [NSTimer scheduledTimerWithTimeInterval:0.2 target:self selector:@selector(updateSlider1) userInfo:nil repeats:YES];
    [slider1 addTarget:self action:@selector(sliderAction:) forControlEvents:UIControlEventValueChanged];
    [self.view addSubview:slider1];
    [self.view bringSubviewToFront:slider1];
}

// this method seek video

-(void)sliderAction:(id)sender
{
    float currentValue,TotalValue;
    float value;
    currentValue = self.moviePlayerController.currentPlaybackTime;
    TotalValue = self.moviePlayerController.duration;

    value =self.moviePlayerController.currentPlaybackTime = slider1.value * TotalValue;

}


// Update slider value after each 0.2 sec 
- (void)updateSlider1 {


    float currentValue,TotalValue;
    float value;
    currentValue = self.moviePlayerController.currentPlaybackTime;
    TotalValue = self.moviePlayerController.duration;

   value = (currentValue/TotalValue);

    slider1.value = value;

}

Answer 2

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UISlider 与 ProgressView 组合