传感器

实现代码：

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

    // 1.开启距离传感器(注意: 默认情况距离传感器是关闭的)
    // 只要开启之后, 就开始实时监听
    [UIDevice currentDevice].proximityMonitoringEnabled = YES;

    // 2.当监听到有物体靠近设备时系统会发出通知
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(proximityStateDidChange:) name:UIDeviceProximityStateDidChangeNotification object:nil];

}

// 注册了通知，在不使用的时候，一定要销毁
- (void)dealloc
{
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}

// 当监听到有物体靠近设备时调用
- (void)proximityStateDidChange:(NSNotification *)note
{
   if( [UIDevice currentDevice].proximityState)
   {
       NSLog(@"有物体靠近");
   }else
   {
       NSLog(@"物体离开");
   }
}

@end

摇一摇

/**
 *  开始摇晃就会调用
 */
- (void)motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event
{
    NSLog(@"%s", __func__);
}
/**
 *  摇晃结束就会调用
 */
- (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event
{
     NSLog(@"%s", __func__);
}
/**
 *  摇晃被打断就会调用
 */
- (void)motionCancelled:(UIEventSubtype)motion withEvent:(UIEvent *)event
{
     NSLog(@"%s", __func__);
}