UISwitch - UISlider - UIDatePick

内容比较少，用的也比较少，稍微记录一下。都是 UIControl 的 子类，UIControl 需要好好研究一下。

UISwitch 简单示例

    // 写个默认的背景，对比下开关设置的rect
    UIView *backgroundView = [[UIView alloc] initWithFrame:CGRectMake(100, 200, 100, 100)];
    backgroundView.backgroundColor = [UIColor grayColor];
    [self.view addSubview:backgroundView];
    
    // seitch 大小固定，只与(x,y) 有关
    UISwitch *aswitch = [[UISwitch alloc] initWithFrame:CGRectMake(100, 200, 100, 100)];
    aswitch.backgroundColor = [UIColor yellowColor];
    [self.view addSubview:aswitch];
    
    // 几个属性
    aswitch.thumbTintColor = [UIColor orangeColor]; // 滑块
    aswitch.onTintColor = [UIColor greenColor]; // on
    aswitch.tintColor = [UIColor redColor]; // off（背景）
    // 设置开关
    [aswitch setOn:!aswitch.isOn animated:YES];
    
    // 下面的设置无效了，也没有提示...在文档中才有说 iOS7 之后无效（实在是这玩意没啥用啊）
    aswitch.offImage = [UIImage imageNamed:@"iconfont-off"];
    aswitch.onImage = [UIImage imageNamed:@"iconfont-on"];

UISlider

    // 滑块 高度已定，内容也会自动调整，
    self.aslider = [[UISlider alloc] initWithFrame:CGRectMake(10, 100, CGRectGetWidth(self.view.bounds) - 20, 100)];
    [self.view addSubview:self.aslider];
    
    self.aslider.minimumValue = 100;// 最小值
    self.aslider.maximumValue = 900;// 最大值
    self.aslider.value = 200.;// 当前值，一般用来获取
    
    self.aslider.minimumTrackTintColor = [UIColor redColor];// 已完成的颜色
    self.aslider.maximumTrackTintColor = [UIColor greenColor];// 未完成的颜色
    self.aslider.thumbTintColor = [UIColor blueColor];// 滑块颜色
    
    self.aslider.minimumValueImage = [UIImage imageNamed:@"iconfont-on"];// 左侧图片，滑块，也会对应变短
    self.aslider.maximumValueImage = [UIImage imageNamed:@"iconfont-off"];// 右侧图片
    
    self.aslider.continuous = YES; // yes 时：value 变化就会通知；no 时：拖动结束才通知
    
    // 根据不同的state 设置图片，并获取
    // 注意这里的image 不做处理的话是随着滑块的移动而拉伸的，可以考虑重写，不使用拉伸的imageView
    [self.aslider setThumbImage:[UIImage imageNamed:@"iconfont-on"] forState:UIControlStateNormal];
    [self.aslider setMinimumTrackImage:[UIImage imageNamed:@"iconfont-on"] forState:UIControlStateNormal];
    [self.aslider setMaximumTrackImage:[UIImage imageNamed:@"iconfont-off"] forState:UIControlStateNormal];
    // 对应有获取图片，就不写了...

// 添加事件，value 变化。
    [self.aslider addTarget:self action:@selector(valueChange:) forControlEvents:UIControlEventValueChanged];

// 重写一个 举例
-(CGRect)minimumValueImageRectForBounds:(CGRect)bounds; {
    for(UIView *view in [self subviews]) {
        if ([view isKindOfClass:[UIImageView class]]) {
            view.clipsToBounds = YES;
            view.contentMode = UIViewContentModeBottomLeft;
            // max 类似
        }
    }
    return bounds;
}

UIDatePick

• 一般日期选择

    self.datePick = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, 100, CGRectGetWidth(self.view.bounds), 200)];
    [self.view addSubview:self.datePick];
    
    self.datePick.datePickerMode = UIDatePickerModeDateAndTime;
    /*
    typedef NS_ENUM(NSInteger, UIDatePickerMode) {
        UIDatePickerModeTime,           // Displays hour, minute, and optionally AM/PM designation depending on the locale setting (e.g. 6 | 53 | PM)
        UIDatePickerModeDate,           // Displays month, day, and year depending on the locale setting (e.g. November | 15 | 2007)
        UIDatePickerModeDateAndTime,    // Displays date, hour, minute, and optionally AM/PM designation depending on the locale setting (e.g. Wed Nov 15 | 6 | 53 | PM)
        UIDatePickerModeCountDownTimer, // Displays hour and minute (e.g. 1 | 53)
    };
    */

// 设置 时间选择 范围
    self.datePick.minimumDate = [NSDate dateWithTimeIntervalSince1970:0];
    self.datePick.maximumDate = [NSDate date];
    
// 一些设置，看另一篇把 分别是：本地，时区，历法
    self.datePick.locale = [NSLocale currentLocale];
    self.datePick.timeZone = [NSTimeZone defaultTimeZone];
    self.datePick.calendar = [NSCalendar currentCalendar];
    
// 获取 和 设置时间
    NSDate *selectDate = self.datePick.date;
    [self.datePick setDate:[NSDate dateWithTimeIntervalSinceNow:-3600] animated:YES];
    
// 添加事件
    [self.datePick addTarget:self action:@selector(testAction) forControlEvents:UIControlEventValueChanged];

• 倒计时

就是： UIDatePickerMode:UIDatePickerModeCountDownTimer

    self.datePick.minuteInterval = 1.;// 显示的时间间隔 n分钟
    self.datePick.countDownDuration = 120;// 剩余时间（还要自己写 --）;

UISegmentedControl

    NSArray *items = @[@"1",@"2222",@"3",@"444"];
    self.segmentedControl = [[UISegmentedControl alloc] initWithItems:items];
    self.segmentedControl.frame = CGRectMake(10, 100, 300, 66);
    [self.view addSubview:self.segmentedControl];
    

    self.segmentedControl.tintColor = [UIColor redColor];// 颜色
    self.segmentedControl.apportionsSegmentWidthsByContent = YES;// 默认NO：平均分； YES： 宽度自动调整。
    NSInteger selectindex = self.segmentedControl.selectedSegmentIndex;// 选中项
    NSLog(@"%zi",self.segmentedControl.selectedSegmentIndex);

    // 移除 插入
    [self.segmentedControl removeSegmentAtIndex:9 animated:YES];
    [self.segmentedControl removeAllSegments];
    [self.segmentedControl insertSegmentWithTitle:@"555" atIndex:0 animated:YES];
    [self.segmentedControl insertSegmentWithTitle:@"555" atIndex:0 animated:YES];
    [self.segmentedControl insertSegmentWithTitle:@"555" atIndex:0 animated:YES];
    [self.segmentedControl insertSegmentWithTitle:@"555" atIndex:0 animated:YES];

    // 设置属性 内容 宽 偏移 可用性
    [self.segmentedControl setTitle:@"1231" forSegmentAtIndex:0];
    [self.segmentedControl setWidth:100 forSegmentAtIndex:0];
    [self.segmentedControl setContentOffset:CGSizeMake(-40, 20) forSegmentAtIndex:0];
    [self.segmentedControl setEnabled:YES forSegmentAtIndex:0];
    // 对应有获取，也不写了

    
    // 背景
    [self.segmentedControl setBackgroundImage:[UIImage imageNamed:@"iconfont-off"] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
    // 属性字符串
    [self.segmentedControl setTitleTextAttributes:@{NSUnderlineStyleAttributeName:@1} forState:UIControlStateNormal];
    // 内容 偏移 type 表示那些需要设置
    [self.segmentedControl setContentPositionAdjustment:UIOffsetMake(10, 20) forSegmentType:UISegmentedControlSegmentCenter barMetrics:UIBarMetricsDefault];
    
    // 添加事件
    [self.segmentedControl addTarget:self action:@selector(testAction) forControlEvents:UIControlEventValueChanged];


// title 也可以是 image

UIPageControl

一般结合 scrolleView 使用，简单也一下本身的使用。

    self.apageControl = [[UIPageControl alloc] initWithFrame:CGRectMake(100, 100, 100, 100)];
    [self.view addSubview:self.apageControl];
    
    self.apageControl.numberOfPages = 5;// 总页数
    self.apageControl.currentPage = 2;// 当前页
    self.apageControl.hidesForSinglePage = YES;// 单页时，隐藏
    
    self.apageControl.defersCurrentPageDisplay = YES;// 相当于 标记 需要更新page，结合下面的使用
    [self.apageControl updateCurrentPageDisplay];// 更新 page
 
    self.apageControl.pageIndicatorTintColor = [UIColor redColor];// 未选择的点
    self.apageControl.currentPageIndicatorTintColor = [UIColor greenColor];// 选中的点
    
    // 添加 点击圆点的 事件
    [self.apageControl addTarget:self action:@selector(testAction) forControlEvents:UIControlEventValueChanged];

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