再上一节说了app作为central衔接peripheral的状况，这一节介绍怎么运用app发布一个peripheral，给其他的central衔接
仍是这张图，central形式用的都是左面的类，而peripheral形式用的是右边的类
peripheral形式的流程
1. 翻开peripheralManager，设置peripheralManager的托付
2. 创立characteristics，characteristics的description 创立service，把characteristics增加到service中，再把service增加到peripheralManager中
3. 敞开播送advertising
4. 对central的操作进行呼应
- 4.1 读characteristics恳求
- 4.2 写characteristics恳求
- 4.4 订阅和撤销订阅characteristics
准备环境
1 xcode
2 开发证书和手机（蓝牙程序需求运用运用真机调试，运用模拟器也能够调试，可是办法很蛋疼，我会放在最终说），假如不可能够运用osx程序调试
3 蓝牙外设
实现过程
1. 翻开peripheralManager，设置peripheralManager的托付
设置当时ViewController实现CBPeripheralManagerDelegate托付
@interface BePeripheralViewController : UIViewController<CBPeripheralManagerDelegate>
初始化peripheralManager
/*
和CBCentralManager相似，蓝牙设备翻开需求一定时刻，翻开成功后会进入托付办法
- (void)peripheralManagerDidUpdateState:(CBPeripheralManager *)peripheral;
模拟器永久也不会得CBPeripheralManagerStatePoweredOn状况
*/
peripheralManager = [[CBPeripheralManager alloc]initWithDelegate:self queue:nil];
2. 创立characteristics，characteristics的description ，创立service，把characteristics增加到service中，再把service增加到peripheralManager中
在托付办法- (void)peripheralManagerDidUpdateState:(CBPeripheralManager *)peripheral中，当peripheral成功翻开后，才干够配置service和characteristics。 这儿创立的service和chara对象是CBMutableCharacteristic和CBMutableService。他们的差异就像NSArray和NSMutableArray差异相似。 咱们先创立characteristics和description，description是characteristics的描绘，描绘分很多种， 这儿不细说了，常用的就是CBUUIDCharacteristicUserDescriptionString。
//peripheralManager状况改动
- (void)peripheralManagerDidUpdateState:(CBPeripheralManager *)peripheral{
switch (peripheral.state) {
//在这儿判别蓝牙设别的状况 当敞开了则可调用 setUp办法(自定义)
case CBPeripheralManagerStatePoweredOn:
NSLog(@"powered on");
[info setText:[NSString stringWithFormat:@"设备名%@已经翻开，能够运用center进行衔接",LocalNameKey]];
[self setUp];
break;
case CBPeripheralManagerStatePoweredOff:
NSLog(@"powered off");
[info setText:@"powered off"];
break;
default:
break;
}
}
//配置bluetooch的
-(void)setUp{
//characteristics字段描绘
CBUUID *CBUUIDCharacteristicUserDescriptionStringUUID = [CBUUID UUIDWithString:CBUUIDCharacteristicUserDescriptionString];
/*
能够通知的Characteristic
properties：CBCharacteristicPropertyNotify
permissions CBAttributePermissionsReadable
*/
CBMutableCharacteristic *notiyCharacteristic = [[CBMutableCharacteristic alloc]initWithType:[CBUUID UUIDWithString:notiyCharacteristicUUID] properties:CBCharacteristicPropertyNotify value:nil permissions:CBAttributePermissionsReadable];
/*
可读写的characteristics
properties：CBCharacteristicPropertyWrite | CBCharacteristicPropertyRead
permissions CBAttributePermissionsReadable | CBAttributePermissionsWriteable
*/
CBMutableCharacteristic *readwriteCharacteristic = [[CBMutableCharacteristic alloc]initWithType:[CBUUID UUIDWithString:readwriteCharacteristicUUID] properties:CBCharacteristicPropertyWrite | CBCharacteristicPropertyRead value:nil permissions:CBAttributePermissionsReadable | CBAttributePermissionsWriteable];
//设置description
CBMutableDescriptor *readwriteCharacteristicDescription1 = [[CBMutableDescriptor alloc]initWithType: CBUUIDCharacteristicUserDescriptionStringUUID value:@"name"];
[readwriteCharacteristic setDescriptors:@[readwriteCharacteristicDescription1]];
/*
只读的Characteristic
properties：CBCharacteristicPropertyRead
permissions CBAttributePermissionsReadable
*/
CBMutableCharacteristic *readCharacteristic = [[CBMutableCharacteristic alloc]initWithType:[CBUUID UUIDWithString:readCharacteristicUUID] properties:CBCharacteristicPropertyRead value:nil permissions:CBAttributePermissionsReadable];
//service1初始化并参加两个characteristics
CBMutableService *service1 = [[CBMutableService alloc]initWithType:[CBUUID UUIDWithString:ServiceUUID1] primary:YES];
[service1 setCharacteristics:@[notiyCharacteristic,readwriteCharacteristic]];
//service2初始化并参加一个characteristics
CBMutableService *service2 = [[CBMutableService alloc]initWithType:[CBUUID UUIDWithString:ServiceUUID2] primary:YES];
[service2 setCharacteristics:@[readCharacteristic]];
//增加后就会调用署理的- (void)peripheralManager:(CBPeripheralManager *)peripheral didAddService:(CBService *)service error:(NSError *)error
[peripheralManager addService:service1];
[peripheralManager addService:service2];
}
3. 敞开播送advertising
//perihpheral增加了service
- (void)peripheralManager:(CBPeripheralManager *)peripheral didAddService:(CBService *)service error:(NSError *)error{
if (error == nil) {
serviceNum++;
}
//因为咱们增加了2个服务，所以想两次都增加完成后才去发送播送
if (serviceNum==2) {
//增加服务后能够在此向外界宣布布告 调用完这个办法后会调用署理的
//(void)peripheralManagerDidStartAdvertising:(CBPeripheralManager *)peripheral error:(NSError *)error
[peripheralManager startAdvertising:@{
CBAdvertisementDataServiceUUIDsKey : @[[CBUUID UUIDWithString:ServiceUUID1],[CBUUID UUIDWithString:ServiceUUID2]],
CBAdvertisementDataLocalNameKey : LocalNameKey
}
];
}
}
//peripheral开始发送advertising
- (void)peripheralManagerDidStartAdvertising:(CBPeripheralManager *)peripheral error:(NSError *)error{
NSLog(@"in peripheralManagerDidStartAdvertisiong");
}
4. 对central的操作进行呼应
- 4.1 读characteristics恳求
- 4.2 写characteristics恳求
- 4.3 订阅和撤销订阅characteristics
//订阅characteristics
-(void)peripheralManager:(CBPeripheralManager *)peripheral central:(CBCentral *)central didSubscribeToCharacteristic:(CBCharacteristic *)characteristic{
NSLog(@"订阅了 %@的数据",characteristic.UUID);
//每秒履行一次给主设备发送一个当时时刻的秒数
timer = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(sendData:) userInfo:characteristic repeats:YES];
}
//撤销订阅characteristics
-(void)peripheralManager:(CBPeripheralManager *)peripheral central:(CBCentral *)central didUnsubscribeFromCharacteristic:(CBCharacteristic *)characteristic{
NSLog(@"撤销订阅 %@的数据",characteristic.UUID);
//撤销回应
[timer invalidate];
}
//发送数据，发送当时时刻的秒数
-(BOOL)sendData:(NSTimer *)t {
CBMutableCharacteristic *characteristic = t.userInfo;
NSDateFormatter *dft = [[NSDateFormatter alloc]init];
[dft setDateFormat:@"ss"];
NSLog(@"%@",[dft stringFromDate:[NSDate date]]);
//履行回应Central通知数据
return [peripheralManager updateValue:[[dft stringFromDate:[NSDate date]] dataUsingEncoding:NSUTF8StringEncoding] forCharacteristic:(CBMutableCharacteristic *)characteristic onSubscribedCentrals:nil];
}
//读characteristics恳求
- (void)peripheralManager:(CBPeripheralManager *)peripheral didReceiveReadRequest:(CBATTRequest *)request{
NSLog(@"didReceiveReadRequest");
//判别是否有读数据的权限
if (request.characteristic.properties & CBCharacteristicPropertyRead) {
NSData *data = request.characteristic.value;
[request setValue:data];
//对恳求作出成功呼应
[peripheralManager respondToRequest:request withResult:CBATTErrorSuccess];
}else{
[peripheralManager respondToRequest:request withResult:CBATTErrorWriteNotPermitted];
}
}
//写characteristics恳求
- (void)peripheralManager:(CBPeripheralManager *)peripheral didReceiveWriteRequests:(NSArray *)requests{
NSLog(@"didReceiveWriteRequests");
CBATTRequest *request = requests[0];
//判别是否有写数据的权限
if (request.characteristic.properties & CBCharacteristicPropertyWrite) {
//需求转换成CBMutableCharacteristic对象才干进行写值
CBMutableCharacteristic *c =(CBMutableCharacteristic *)request.characteristic;
c.value = request.value;
[peripheralManager respondToRequest:request withResult:CBATTErrorSuccess];
}else{
[peripheralManager respondToRequest:request withResult:CBATTErrorWriteNotPermitted];
}
}
代码下载:
我博客中大部分示例代码都上传到了github，地址是：github.com/coolnameism…](github.com/coolnameism…)
本文代码存放目录是BleDemo
