传感器

传感器.png

• 距离传感器

- (void)viewDidLoad {
    [super viewDidLoad];
    
    [UIDevice currentDevice].proximityMonitoringEnabled = YES;
    
    // 监听有物品靠近还是离开
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(proximityStateDidChange) name:UIDeviceProximityStateDidChangeNotification object:nil];
    
}

- (void)proximityStateDidChange {
    
    if ([UIDevice currentDevice].proximityState) {
        NSLog(@"有物品靠近");
    } else {
        NSLog(@"有物品离开");
    }
    
    
}

• 加速器

//push方式
// 创建运动管理者对象
    self.manager = [[CMMotionManager alloc] init];
    
    // 判断加速计是否可用
    if (!self.manager.isAccelerometerAvailable) {
        NSLog(@"加速计不可用");
        return;
    }
    
    // 设置采样间隔
    self.manager.accelerometerUpdateInterval = 0.3;
    
    // 开始采样
    [self.manager startAccelerometerUpdatesToQueue:[NSOperationQueue mainQueue] withHandler:^(CMAccelerometerData * _Nullable accelerometerData, NSError * _Nullable error) {
        // 当采样到加速计信息就会执行
        if (error) return;
        
        // 获取加速计信息
        CMAcceleration acceleration = accelerometerData.acceleration;
        NSLog(@"x:%f, y:%f ,z:%f", acceleration.x, acceleration.y, acceleration.z);
    }];

• 陀螺仪

    // 判断陀螺仪是否可用
    if (![self.manager isGyroAvailable]) {
        NSLog(@"手机该换了");
        return;
    }
    
    // 设置采样间隔
    self.manager.gyroUpdateInterval = 0.3;
    
    // 开始采样
    [self.manager startGyroUpdatesToQueue:[NSOperationQueue mainQueue] withHandler:^(CMGyroData * _Nullable gyroData, NSError * _Nullable error) {
        if (error) return ;
            
        CMRotationRate rate = gyroData.rotationRate;
        NSLog(@"x:%f, y:%f, z:%f", rate.x, rate.y, rate.z);
    }];