iOS.UIKit.04.UISwitch_UISegmentedControl

一、案例介绍：两个开关保持一致；点击分段控制两个开关显示和隐藏；显示滑块的值；如图01

图01图02图03

二、案例步骤：

1、选择Single View Aplication新建项目，取名cq.29.开关_滑块_分段控件，如图02。

2、Main.storyboard如图03。

3、CQ29ViewController.h

》定义leftSwitch、rightSwitch、sliderValue,分别连线

#import <UIKit/UIKit.h>

@interface CQ29ViewController : UIViewController

@property (weak,nonatomic) IBOutlet UISwitch *leftSwitch;
@property (weak,nonatomic) IBOutlet UISwitch *rightSwitch;
@property (weak,nonatomic) IBOutlet UILabel *sliderValue;

- (IBAction)sliderValueChanged:(id)sender;

- (IBAction)valueChanged:(id)sender;

-(IBAction)touchDown:(id)sender;
@end

4、CQ29ViewController.m

#pragma mark 保持两个开关同开同关
- (IBAction)valueChanged:(id)sender
{
    UISwitch *witchSwitch = (UISwitch *)sender;
    BOOL setting = witchSwitch.isOn;
    [self.leftSwitch setOn:setting animated:YES];
    [self.rightSwitch setOn:setting animated:YES];
}
#pragma mark 显示滑块的值
- (IBAction)sliderValueChanged:(id)sender
{
    UISlider *slider = (UISlider *)sender;
    int progressAsInt = (int)(slider.value + 0.5f);
    NSString *newText = [[NSString alloc] initWithFormat:@"%d",progressAsInt];
    self.sliderValue.text = newText;
}

//点击分段控件控制开关控件的隐藏或显示
- (IBAction)touchDown:(id)sender {
    if (self.leftSwitch.hidden  == YES) {
        self.rightSwitch.hidden = NO;
        self.leftSwitch.hidden  = NO;
    }else{
        self.leftSwitch.hidden  = YES;
        self.rightSwitch.hidden = YES;
    }
}