传感器,加速计,蓝牙以及UIDevice方法的详细说明

我的博客:http://blog.csdn.net/nsydianzi

距离传感器:

关于距离传感器使用很简单,流程也少.

步骤:

第一步:打开举例传感器;(获取当前设备,并且将当前设备的proximityMonitoringEnabled属性值设置为YES)

第二步:监听传感器的变化;(利用通知,当距离传感器前方有物体接近时会发送一个通知,离开时也会发通知UIDeviceProximityStateDidChangeNotification是定义的一个常量)

// 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];

// 当监听到有物体靠近设备时调用

- (void)proximityStateDidChange:(NSNotification *)note

{

if( [UIDevice currentDevice].proximityState)//判断物体接近状态

{

NSLog(@"有物体靠近");

}else

{

NSLog(@"物体离开");

}

}

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加速度传感器:

在iOS4以前使用UIAccelerometer来获取到设备的加速度,用法简单,但是在iOS5时已经过期.

但是从iOS4开始苹果提供了一个库,CoreMotion.framework来获取设备的加速度信息,功能更加强大

iOS8已经完全不能使用

UIAccelerometer使用步骤: //被废弃,简单写一点用法步骤

1.获得单例对象

UIAccelerometer *acc = [UIAccelerometer sharedAccelerometer];

2.设置代理

遵循<UIAccelerometerDelegate>协议

acc.delegate = self;

实现代理方法

- (void)accelerometer:(UIAccelerometer *)accelerometer
didAccelerate:(UIAcceleration *)acceleration;

这个方法只要采集到数据就会调用

3.设置采样间隔

acc.updateInterval = 1 / 30;

CoreMotion使用步骤:

1.创建运动管理者对象

self.mgr = [[CMMotionManager alloc] init];

2.判断加速计是否可用(最好是要判断)

if (self.mgr.isAccelerometerAvailable)
{}

判断加速计可用则设置下面的数据i

3.设置采样间隔

self.mgr.accelerometerUpdateInterval = 0.1 ;///
30.0;

4.开始采样

[self.mgr startAccelerometerUpdatesToQueue:[NSOperationQueuemainQueue] withHandler:^(CMAccelerometerData*accelerometerData, NSError *error)
{

// 这个block是采集到数据时就会调用

if (error) return ;

CMAcceleration acceleration = accelerometerData.acceleration;

NSLog(@"x = %f y = %f z = %f",
acceleration.x, acceleration.y , acceleration.z);

self.label.text =
[NSString stringWithFormat:@"x
= %.2f y = %.2f z = %.2f",acceleration.x, acceleration.y ,
acceleration.z];

}];

/*

isAccelerometerActive 是否正在采集

accelerometerData 采集到得数据

startAccelerometerUpdates pull

startAccelerometerUpdatesToQueue push

stopAccelerometerUpdates 停止采集

accelerometerUpdateInterval 采样时间

*/

typedef NS_ENUM(NSInteger, UIDeviceOrientation) //设备方向

{

UIDeviceOrientationUnknown,

UIDeviceOrientationPortrait,                   // 竖向，头向上

UIDeviceOrientationPortraitUpsideDown,  // 竖向，头向下

UIDeviceOrientationLandscapeLeft,         // 横向，头向左

UIDeviceOrientationLandscapeRight,       // 横向，头向右

UIDeviceOrientationFaceUp,                   // 平放，屏幕朝下

UIDeviceOrientationFaceDown                // 平放，屏幕朝下

};

typedef NS_ENUM(NSInteger, UIDeviceBatteryState) //电池状态

{

UIDeviceBatteryStateUnknown,

UIDeviceBatteryStateUnplugged,   // 未充电

UIDeviceBatteryStateCharging,     // 正在充电

UIDeviceBatteryStateFull,             // 满电

};

typedef NS_ENUM(NSInteger, UIUserInterfaceIdiom) //用户界面类型

{

//iOS3.2以上有效

#if __IPHONE_3_2 <= __IPHONE_OS_VERSION_MAX_ALLOWED

UIUserInterfaceIdiomPhone,           // iPhone 和 iPod touch 风格

UIUserInterfaceIdiomPad,              // iPad 风格

#endif

};

#define UI_USER_INTERFACE_IDIOM() ([[UIDevice currentDevice] respondsToSelector:@selector(userInterfaceIdiom)] ? [[UIDevice currentDevice] userInterfaceIdiom] : UIUserInterfaceIdiomPhone)

#define UIDeviceOrientationIsPortrait(orientation)  ((orientation) == UIDeviceOrientationPortrait || (orientation) == UIDeviceOrientationPortraitUpsideDown)

#define UIDeviceOrientationIsLandscape(orientation) ((orientation) == UIDeviceOrientationLandscapeLeft || (orientation) == UIDeviceOrientationLandscapeRight)

NS_CLASS_AVAILABLE_IOS(2_0) @interface UIDevice : NSObject {

@private

NSInteger _numDeviceOrientationObservers;

float     _batteryLevel;

struct {

unsigned int batteryMonitoringEnabled:1;

unsigned int proximityMonitoringEnabled:1;

unsigned int expectsFaceContactInLandscape:1;

unsigned int orientation:3;

unsigned int batteryState:2;

unsigned int proximityState:1;

 } _deviceFlags;

}

+ (UIDevice *)currentDevice; // 获取当前设备

@property(nonatomic,readonly,retain) NSString    *name;                // e.g. "My iPhone"

@property(nonatomic,readonly,retain) NSString    *model;               // e.g. @"iPhone", @"iPod touch"

@property(nonatomic,readonly,retain) NSString    *localizedModel;    // localized version of model

@property(nonatomic,readonly,retain) NSString    *systemName;      // e.g. @"iOS"

@property(nonatomic,readonly,retain) NSString    *systemVersion;    // e.g. @"4.0"

@property(nonatomic,readonly) UIDeviceOrientation orientation;       // 除非正在生成设备方向的通知，否则返回UIDeviceOrientationUnknown 。

@property(nonatomic,readonly,retain) NSUUID      *identifierForVendor NS_AVAILABLE_IOS(6_0);      // 可用于唯一标识该设备，同一供应商不同应用具有相同的UUID 。

@property(nonatomic,readonly,getter=isGeneratingDeviceOrientationNotifications) BOOL generatesDeviceOrientationNotifications; //是否生成设备转向通知

- (void)beginGeneratingDeviceOrientationNotifications;

- (void)endGeneratingDeviceOrientationNotifications;

@property(nonatomic,getter=isBatteryMonitoringEnabled) BOOL batteryMonitoringEnabled NS_AVAILABLE_IOS(3_0);  // 是否启动电池监控，默认为NO

@property(nonatomic,readonly) UIDeviceBatteryState batteryState NS_AVAILABLE_IOS(3_0);  // 如果禁用电池监控，则电池状态为UIDeviceBatteryStateUnknown

@property(nonatomic,readonly) float batteryLevel NS_AVAILABLE_IOS(3_0);  //电量百分比， 0 .. 1.0。如果电池状态为UIDeviceBatteryStateUnknown，则百分比为-1.0

@property(nonatomic,getter=isProximityMonitoringEnabled) BOOL proximityMonitoringEnabled NS_AVAILABLE_IOS(3_0); // 是否启动接近监控（例如接电话时脸靠近屏幕），默认为NO

@property(nonatomic,readonly)  BOOL proximityState NS_AVAILABLE_IOS(3_0);  // 如果设备不具备接近感应器，则总是返回NO

@property(nonatomic,readonly,getter=isMultitaskingSupported) BOOL multitaskingSupported NS_AVAILABLE_IOS(4_0); // 是否支持多任务

@property(nonatomic,readonly) UIUserInterfaceIdiom userInterfaceIdiom NS_AVAILABLE_IOS(3_2); // 当前用户界面模式

- (void)playInputClick NS_AVAILABLE_IOS(4_2);  // 播放一个输入的声音

@end

@protocol UIInputViewAudioFeedback

@optional

@property (nonatomic, readonly) BOOL enableInputClicksWhenVisible; // 实现该方法，返回YES则自定义的视图能够播放输入的声音

@end

UIKIT_EXTERN NSString *const UIDeviceOrientationDidChangeNotification; // 屏幕方向变化通知

UIKIT_EXTERN NSString *const UIDeviceBatteryStateDidChangeNotification   NS_AVAILABLE_IOS(3_0); // 电池状态变化通知

UIKIT_EXTERN NSString *const UIDeviceBatteryLevelDidChangeNotification   NS_AVAILABLE_IOS(3_0); // 电池电量变化通知

UIKIT_EXTERN NSString *const UIDeviceProximityStateDidChangeNotification NS_AVAILABLE_IOS(3_0); // 接近状态变化通知

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重点:这个在iOS8就不能使用了

#import <Foundation/Foundation.h>

#import <UIKit/UIKitDefines.h>

/* UIAcceleration and UIAccelerometer are deprecated as of iOS 5.0. These classes have been replaced by the Core Motion framework.

*/

NS_ASSUME_NONNULL_BEGIN

typedef double UIAccelerationValue;

@protocol UIAccelerometerDelegate;

NS_CLASS_DEPRECATED_IOS(2_0, 5_0, "UIAcceleration has been replaced by the CoreMotion framework")__TVOS_PROHIBITED

@interface UIAcceleration : NSObject

@property(nonatomic,readonly) NSTimeInterval timestamp;    //采样时间

@property(nonatomic,readonly) UIAccelerationValue x;       //偏移量

@property(nonatomic,readonly) UIAccelerationValue y;

@property(nonatomic,readonly) UIAccelerationValue z;

@end

NS_CLASS_DEPRECATED_IOS(2_0, 5_0, "UIAccelerometer has been replaced by the CoreMotion framework")__TVOS_PROHIBITED

@interface UIAccelerometer : NSObject

+ (UIAccelerometer *)sharedAccelerometer;

@property(nonatomic) NSTimeInterval updateInterval; //May be capped at a minimum interval

@property(nullable,nonatomic,weak) id<UIAccelerometerDelegate> delegate;

@end

__TVOS_PROHIBITED

@protocol UIAccelerometerDelegate<NSObject>

@optional

- (void)accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration NS_DEPRECATED_IOS(2_0, 5_0) __TVOS_PROHIBITED;

@end

NS_ASSUME_NONNULL_END

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