#import

@interface UISwitchViewController : UIViewController

{

    UISwitch* _oneSwitch;

    UISwitch* _twoSwith;

}

@property (retain,nonatomic) UISwitch* oneSwitch;

@property (retain,nonatomic) UISwitch* twoSwitch;

-(IBAction)switchChange:(id)sender;          //定义连个switch一个当switch时候调用的事件

@end

|--UISwitchViewController.m

#import "UISwitchViewController.h"

@interface UISwitchViewController ()

@end

@implementation UISwitchViewController

@synthesize oneSwitch=_oneSwitch,twoSwitch=_twoSwith;

- (void)viewDidLoad

{

    [super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

    _oneSwitch = [[UISwitch alloc]initWithFrame:CGRectMake(100, 50, 40, 40)];//创建两个switch

    _twoSwith = [[UISwitch alloc]initWithFrame:CGRectMake(100, 200, 40, 40)];

    [_oneSwitch addTarget:self action:@selector(switchChange:) forControlEvents:UIControlEventValueChanged];                    //定义调用的事件和动作

    [self.view addSubview:_oneSwitch]; //加到self.view显示

    [_twoSwith addTarget:self action:@selector(switchChange:) forControlEvents:UIControlEventValueChanged];

    [self.view addSubview:_twoSwith];

}

- (void)didReceiveMemoryWarning

{

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

-(IBAction)switchChange:(id)sender

{

    //传过来的参数转为uiswitch

    UISwitch* testSwitch = (UISwitch *)sender;

    BOOL isOn = testSwitch.isOn;   //给一个定义的值 活的开关状态

    if (isOn) {

        NSLog(@"switchOn");

    } else {

        NSLog(@"switchOff");

    }

    [_oneSwitch setOn:isOn animated:YES];//设置属性和动作

    [_twoSwith setOn:isOn animated:YES];

}

@end