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  • iOS UI进阶-5.0 蓝牙/加速计/传感器

    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__);
    }
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  • 原文地址:https://www.cnblogs.com/jys509/p/4854326.html
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