CBPeripheralManager学习笔记
@interface CBPeripheralManager : NSObject
//CBPeripheralManager的几种状态
typedef NS_ENUM(NSInteger, CBCentralManagerState) {
// 初始的时候是未知的(刚刚创建的时候)
CBCentralManagerStateUnknown = 0,
//正在重置状态
CBCentralManagerStateResetting,
//设备不支持的状态
CBCentralManagerStateUnsupported,
// 设备未授权状态
CBCentralManagerStateUnauthorized,
//设备关闭状态
CBCentralManagerStatePoweredOff,
// 设备开启状态 -- 可用状态
CBCentralManagerStatePoweredOn,
};
// 设置代理 一般就是当前类
@property(weak, nonatomic) id<CBPeripheralManagerDelegate>
delegate;
// CBPeripheral类实例当前状态
@property(readonly) CBPeripheralManagerState state;
//当前是否正在广播数据
@property(readonly) BOOL isAdvertising;
//蓝牙设备授权状态
// 授权状态不确定 未知CBPeripheralManagerAuthorizationStatusNotDetermined = 0,
// 授权状态是受限制的
CBPeripheralManagerAuthorizationStatusRestricted,
// 授权状态是拒绝的 (未授权)
CBPeripheralManagerAuthorizationStatusDenied,
// 授权状态是已授权
CBPeripheralManagerAuthorizationStatusAuthorized,
+ (CBPeripheralManagerAuthorizationStatus)authorizationStatus
//创建 如果queue为nil那么就是在主线程中使用
- (id)initWithDelegate:(id<CBPeripheralManagerDelegate>)delegate queue:(dispatch_queue_t)queue;
//相较于第一个创建方法多了一个可选项options
//其中options里面有两个key值
//CBPeripheralManagerOptionRestoreIdentifierKey
----对应的值是一个字典(数组)创建一个CBPeripheralManager的一个实例时从options中取出值去恢复Peripheral的状态
//CBPeripheralManagerOptionShowPowerAlertKey
----对应的值是一个NSNumber类型BOOL值,它标识了在系统peripheral创建在蓝牙关闭的情况下是否应该显示一个警告对话框
- (id)initWithDelegate:(id<CBPeripheralManagerDelegate>)delegate queue:(dispatch_queue_t)queue
options:(NSDictionary *)options
//advertisementData包含了你想要广播的数据,当广播开启的时候 peripheral会调用他的代理方法-(void)peripheralManagerDidStartAdvertising: error:
- (void)startAdvertising:(NSDictionary *)advertisementData;
// 停止广播
- (void)stopAdvertising
// 设置一个延时for central
//CBPeripheralManagerConnectionLatency是一个枚举:
CBPeripheralManagerConnectionLatencyLow 低连接延时,
CBPeripheralManagerConnectionLatencyMedium 中等连接延时,
CBPeripheralManagerConnectionLatencyHigh 高连接延时
- (void)setDesiredConnectionLatency:(CBPeripheralManagerConnectionLatency)latency forCentral:(CBCentral *)central
//添加一个service和与这个service相关联的characteristic到local database,如果他们已经存在他们必须首先被发布
- (void)addService:(CBMutableService *)service;
//冲local database移除一个已经发布的服务,如果这个服务包含了其他服务,那么必须先移除前者
- (void)removeService:(CBMutableService *)service;
//移除所有已经发布的服务service
- (void)removeAllServices;
//响应一个从central传过来读或者写请求
//响应已连接的central的读写请求,当peripheral接收到central的读或者写的 characteristic 的 value时候peripheral会回调peripheralManager:didReceiveReadRequest:或者peripheralManager:didReceiveWriteRequest:
- (void)respondToRequest:(CBATTRequest *)request withResult:(CBATTError)result;
//为订阅了peripheral的central更新characteristic里面的值
- (BOOL)updateValue:(NSData *)value forCharacteristic:(CBMutableCharacteristic *)characteristic onSubscribedCentrals:(NSArray *)centrals
******************************代理方法***********************************
@protocol CBPeripheralManagerDelegate <NSObject>
@required
//更新状态 ,只有状态可用的时候才能够进行创建服务,发布等等操作
//状态和CBCentralManager一样
- (void)peripheralManagerDidUpdateState:(CBPeripheralManager*)peripheral
@optional
//peripheral提供信息,dict包含了应用程序关闭是系统保存的peripheral的信息,用dic去恢复peripheral
//app状态的保存或者恢复,这是第一个被调用的方法当APP进入后台去完成一些蓝牙有关的工作设置,使用这个方法同步app状态通过蓝牙系统
//dic里面有两对key值分别对应服务(数组)和数据(数组)
- (void)peripheralManager:(CBPeripheralManager *)peripheral willRestoreState:(NSDictionary *)dict;
// 开始向外广播数据 当startAdvertising被执行的时候调用这个代理方法
- (void)peripheralManagerDidStartAdvertising:(CBPeripheralManager *)peripheral error:(NSError *)error
// 当你执行addService方法后执行如下回调,当你发布一个服务和任何一个相关特征的描述到GATI数据库的时候执行
- (void)peripheralManager:(CBPeripheralManager *)peripheral didAddService:(CBService *)service error:(NSError *)error
//central订阅了characteristic的值,当更新值的时候peripheral会调用【updateValue: forCharacteristic: onSubscribedCentrals:(NSArray*)centrals】去为数组里面的centrals更新对应characteristic的值,在更新过后peripheral为每一个central走一遍改代理方法
- (void)peripheralManager:(CBPeripheralManager *)peripheral central:(CBCentral *)central didSubscribeToCharacteristic:(CBCharacteristic *)characteristic
//当central取消订阅characteristic这个特征的值后调用方法。使用这个方法提示停止为这个central发送更新
- (void)peripheralManager:(CBPeripheralManager *)peripheral central:(CBCentral *)central didUnsubscribeFromCharacteristic:(CBCharacteristic *)characteristic
//当peripheral接受到一个读ATT读请求,数据在CBATTRequest
- (void)peripheralManager:(CBPeripheralManager *)peripheral didReceiveReadRequest:(CBATTRequest *)request
//当peripheral接受到一个写请求的时候调用,参数有一个数组的CBATTRequest对象request
- (void)peripheralManager:(CBPeripheralManager *)peripheral didReceiveWriteRequests:(NSArray *)requests
//peripheral再次准备好发送Characteristic值的更新时候调用
//当updateValue: forCharacteristic:onSubscribedCentrals:方法调用因为底层用于传输Characteristic值更新的队列满了而更新失败的时候,实现这个委托再次发送改值
- (void)peripheralManagerIsReadyToUpdateSubscribers:(CBPeripheralManager *)peripheral