ios-UI基础控件-UIControl及其子类

我引领着星光的降临

UIControl简介

• UIControl是有控制功能的视图(比如UIButton，UISlider，UISegmentControl等）的父类

• 只要是跟控制有关的控件都是继承于该类
• UIControl这个类通常我们并不直接使用，而是使用其子类

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UISegmentControl

1.UISegmentedControl是iOS中的分段控件，每个segment都能够被点击，相当于继承了若干个Button。通常我们使用不同的segment切换不同的View
2.什么是UISegmentControl？

分段控制

3.方法属性

方法属性

UISlider

1.滑块控件通常用于控制视频播放进度，控制音量
2.UISlider是什么？

音量控制

• 方法属性

常用属性

代码示例

• UISegmentControl

#pragma mark - 分段控制器
    NSMutableArray *imageArray = [NSMutableArray array];
    for (int i = 1; i < 5; i++) {
        [imageArray addObject:[NSString stringWithFormat:@"%d",i]];
    }
    UISegmentedControl *control = [[UISegmentedControl alloc] initWithItems:imageArray];
    control.selectedSegmentIndex = 1;
    
    for (int i = 0; i < 4; i++) {
        [control setImage:[UIImage imageNamed:[NSString stringWithFormat:@"%d.png", i+1]] forSegmentAtIndex:i];
    }
    
    control.frame = CGRectMake(150, 100, 150, 100);
    NSLog(@"%f", [control widthForSegmentAtIndex:0]);
    control.tintColor = [UIColor redColor];
    [control setWidth:70.0 forSegmentAtIndex:1];//设置指定索引选项的宽度
    control.tag = 1001;
    [self.view addSubview:control];
    
    
    //添加事件
    [control addTarget:self action:@selector(changeView:) forControlEvents:UIControlEventValueChanged];

• UISlider

#pragma mark - UISlider
    UISlider *slider = [[UISlider alloc] initWithFrame:CGRectMake(200, 250, 300, 50)];
    slider.maximumValue = 0;
    slider.maximumValue = 255;
    slider.value = 0;
    slider.transform = CGAffineTransformRotate(slider.transform, M_PI_2);
    [self.view addSubview:slider];
    [slider addTarget:self action:@selector(sliderAction:) forControlEvents:UIControlEventValueChanged];

• UISwitch

#pragma mark - UISwitch
    UISwitch *switchBtn = [[UISwitch alloc] initWithFrame:CGRectMake(200, 200, 100, 50)];
    switchBtn.on = YES;
    switchBtn.onTintColor = [UIColor blackColor];
    switchBtn.thumbTintColor = [UIColor orangeColor];
    switchBtn.tintColor = [UIColor greenColor];
    [self.view addSubview:switchBtn];
    [switchBtn addTarget:self action:@selector(switchAction:) forControlEvents:UIControlEventValueChanged];

• UIPageControl

#pragma mark - pageControl
    _page = [[UIPageControl alloc] initWithFrame:CGRectMake(100, self.view.bounds.size.height-200, 200, 40)];
    //设置页面个数
    _page.numberOfPages = 4;
    //设置当前页 默认为0
    _page.currentPage = 1;
    _page.backgroundColor = [UIColor blueColor];
    _page.tag = 1001;
    //小圆点的颜色
    _page.currentPageIndicatorTintColor = [UIColor blackColor];
    _page.pageIndicatorTintColor = [UIColor purpleColor];
    //给pageControl添加事件
    [_page addTarget:self action:@selector(pageAction:) forControlEvents:UIControlEventValueChanged];
    [self.view addSubview:_page];
    //循环创建5个图片
    _imageView = [[UIImageView alloc] initWithFrame:CGRectMake(100, 300, 200, 200)];
    _imageView.image = [UIImage imageNamed:[NSString stringWithFormat:@"pic%ld.jpg", _page.currentPage+1]];
    [self.view addSubview:_imageView];
//    [NSTimer scheduledTimerWithTimeInterval:2 target:self selector:@selector(changePage) userInfo:nil repeats:YES];
    NSTimer *timer = [NSTimer timerWithTimeInterval:1 target:self selector:@selector(changePage) userInfo:nil repeats:YES];
    NSRunLoop *runloop = [NSRunLoop currentRunLoop];
    [runloop addTimer:timer forMode:NSDefaultRunLoopMode];