iOS 蓝牙使用小结 bluetooth_ios蓝牙连接记录清除

iOS 蓝牙使用小结 bluetooth由刀豆文库小编整理，希望给你工作、学习、生活带来方便，猜你可能喜欢“ios蓝牙连接记录清除”。

iOS 蓝牙使用小结 bluetooth

现将创建蓝牙工程的要点总结一下，由于工程主要涉及中心模式，所以只总结中心模式的用法 1,引入CoreBluetooth.framework 2,实现蓝牙协议，如：.h文件如下

@protocol CBCentralManagerDelegate;

@protocol CBPeripheralDelegate;@interface ViewController : UIViewController.m文件如下

#import “CoreBluetooth/CoreBluetooth.h”

另外还有代理部分请自行添加3，下面是使蓝牙动起来的过程

3.1创建CBCentralManager实例

self.cbCentralMgr = [[CBCentralManager alloc] initWithDelegate:self queue:nil];

设置代理，比如:

self.cbCentralMgr.delegate = self;创建数组管理外设

self.peripheralArray = [NSMutableArray array];3.2扫描周围的蓝牙

实际上周围的蓝牙如果可被发现，则会一直往外发送广告消息，中心设备就是通过接收这些消息来发现周围的蓝牙的

NSDictionary * dic = [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:false],CBCentralManagerScanOptionAllowDuplicatesKey, nil];

[self.cbCentralMgr scanForPeripheralsWithServices:nil options:dic];3.3发现一个蓝牙设备

也就是收到了一个周围的蓝牙发来的广告信息，这是CBCentralManager会通知代理来处理

-(void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI {

}

如果周围的蓝牙有多个，则这个方法会被调用多次，你可以通过tableView或其他的控件把这些周围的蓝牙的信息打印出来

3.4连接一个蓝牙

[self.cbCentralMgr connectPeripheral:peripheral options:[NSDictionary dictionaryWithObject:[NSNumber numberWithBool:YES] forKey:CBConnectPeripheralOptionNotifyOnDisconnectionKey]];

一个中心设备可以同时连接多个周围的蓝牙设备

当连接上某个蓝牙之后，CBCentralManager会通知代理处理-(void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral { }因为在后面我们要从外设蓝牙那边再获取一些信息，并与之通讯，这些过程会有一些事件可能要处理，所以要给这个外设设置代理，比如： peripheral.delegate = self;

3.5查询蓝牙服务

[peripheral discoverServices:nil];返回的蓝牙服务通知通过代理实现

-(void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error {for(CBService* service in peripheral.services){

} }

3.6查询服务所带的特征值

[peripheral discoverCharacteristics:nil forService:service];

返回的蓝牙特征值通知通过代理实现-(void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error {for(CBCharacteristic * characteristic in service.characteristics){ } }

3.7给蓝牙发数据

[peripheral writeValue:data forCharacteristic:characteristic type:CBCharacteristicWriteWithResponse];

这时还会触发一个代理事件

-(void)peripheral:(CBPeripheral *)peripheral didWriteValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error { }

3.8处理蓝牙发过来的数据

-(void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error { }3.9 retrievePeripheralsWithIdentifiers 使用例子

-(IBAction)Retrieve:(id)Sender { [self.tvLog setText:@“”];

NSMutableArray * Identifiers = [NSMutableArray array];

for(CBPeripheral * peripheral in self.peripheralArray){ [Identifiers addObject:peripheral.identifier];}[self addLog:@“[self.cbCentralMgr retrievePeripheralsWithIdentifiers:self.PeripheralIdentifiers]”];

self.retrievePeripherals = [self.cbCentralMgr retrievePeripheralsWithIdentifiers:Identifiers];

for(CBPeripheral* peripheral in self.retrievePeripherals){ [self addLog:[NSString stringWithFormat: @“%@ name:%@”,peripheral,peripheral.name]];}

[self.tableViewPeripheral reloadData];}3.10 retrieveConnectedPeripheralsWithServices 使用例子-(IBAction)Retrieve:(id)Sender { [self.tvLog setText:@“”];

NSMutableArray * services = [NSMutableArray array];

for(CBPeripheral * peripheral in self.peripheralArray){

if(peripheral.isConnected){

for(CBService *service in peripheral.services){ [services addObject:service.UUID];} } }[self addLog:@“[self.cbCentralMgr retrieveConnectedPeripheralsWithServices:peripheral.services]”];

self.retrievePeripherals = [self.cbCentralMgr retrieveConnectedPeripheralsWithServices:services];

for(CBPeripheral* peripheral in self.retrievePeripherals){ [self addLog:[NSString stringWithFormat: @“%@ name:%@”,peripheral,peripheral.name]];}

[self.tableViewPeripheral reloadData];}