Core Bluetooth的使用
1，建立中心设备
2，扫描外设（Discover Peripheral）
3，连接外设(Connect Peripheral)
4，扫描外设中的服务和特征(Discover Services And Characteristics)
5，利用特征与外设做数据交互(Explore And Interact)
6，断开连接(Disconnect)
// ViewController.m
// 01-蓝牙4.0
// Created by apple on 16/1/4.
// Copyright © 2016年 apple. All rights reserved.
#import "ViewController.h"
#import <CoreBluetooth/CoreBluetooth.h>
@interface ViewController ()<CBCentralManagerDelegate,CBPeripheralDelegate>
@property (nonatomic,strong)CBCentralManager *manager;
@property (nonatomic,strong)NSMutableArray *peripherals;//盛放外围设备的数组
@end
@implementation ViewController
- (NSMutableArray *)peripherals
{
if (_peripherals == nil) {
_peripherals = [NSMutableArray array];
}
return _peripherals;
}
- (void)viewDidLoad {
[super viewDidLoad];
//1.创建中心管理者
//传 nil 为主队列
CBCentralManager *manager = [[CBCentralManager alloc]initWithDelegate:self queue:nil];
self.manager = manager;
}
//状态发生改变的时候 回来到此方法
- (void)centralManagerDidUpdateState:(CBCentralManager *)central
{
//2.先判断蓝牙是打开
if (central.state == CBCentralManagerStatePoweredOn) {
//3.搜索外围设备
[central scanForPeripheralsWithServices:nil options:nil];
}
}
//CBPeripheral 外围设备
//advertisementData配置信息
//RSSI 信号强度
- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary<NSString *,id> *)advertisementData RSSI:(NSNumber *)RSSI
{
[self.peripherals addObject:peripheral];
}
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
//4.连接外围设备
//遍历数组
for (int i = 0; i < self.peripherals.count; i ++) {
CBPeripheral *peripheral = self.peripherals[i];
[self.manager connectPeripheral:peripheral options:nil];
}
}
//连接外围设备之后 会来到此方法
- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral
{
//5.获取服务
[peripheral discoverServices:nil];
peripheral.delegate = self;
}
//发现服务会来的此方法
- (void)peripheral:(CBPeripheral *)peripheral didDiscoverDescriptorsForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
{
//6.通过服务去找特征
[peripheral discoverCharacteristics:nil forService:peripheral.services.lastObject];
}
//发现特征会来的此方法
- (void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error
{
}
@end