iOS开发之传感器

判断当前设备离人或物的距离进行感应

//距离传感器[UIDevice currentDevice].proximityMonitoringEnabled = YES;

直接上代码

//监听距离感应的通知[[NSNotificationCenter defaultCenter] addObserver:self                                         selector:@selector(proximityChange:)                                             name:UIDeviceProximityStateDidChangeNotification                                           object:nil];

- (void)proximityChange:(NSNotificationCenter *)notification{    if ([UIDevice currentDevice].proximityState == YES) {        NSLog(@"某个物体靠近了设备屏幕"); // 屏幕会自动锁住    } else {        NSLog(@"某个物体远离了设备屏幕"); // 屏幕会自动解锁    }}

手机方向

[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];[[NSNotificationCenter defaultCenter] addObserver:self                                             selector:@selector(orientationChanged:)                                                 name:@"UIDeviceOrientationDidChangeNotification"                                               object:nil];

- (void)orientationChanged:(NSNotification *)notification{    UIDeviceOrientation orientation = [[UIDevice currentDevice] orientation];    NSLog(@"当前朝向枚举数字值  %ld",orientation);    switch (orientation) {        case UIDeviceOrientationPortrait:            NSLog(@"portrait ...");             //正立            break;        case UIDeviceOrientationPortraitUpsideDown:            NSLog(@"portrait UpsideDown ...");  //倒立            break;        case UIDeviceOrientationLandscapeLeft:            NSLog(@"Landscape Left ...");       //左横屏            break;        case UIDeviceOrientationLandscapeRight:            NSLog(@"Landscape Right ...");      //右横屏            break;        case UIDeviceOrientationFaceUp:            NSLog(@"Face Up ...");              //平放            break;        case UIDeviceOrientationFaceDown:            NSLog(@"Face Down ...");            //反放            break;        default:            break;    }}