iOS蓝牙4.0基本功能实现

以下代码实现了蓝牙广播、读特征、写特征、订阅特征
手机界面：

IMG_5779.PNG

IMG_5780.PNG

Main.storyboard：

Snip20180301_2.png

文件结构：

Snip20180301_3.png

生成UUID的方式:在终端输入下方指令

laimin$ uuidgen

主体代码：

//
//  CoreBluetooth.h
//  01-蓝牙通信
//
//  Created by laimin on 2018/3/1.
//  Copyright © 2018年 laimin. All rights reserved.
//

#ifndef CoreBluetooth_h
#define CoreBluetooth_h

//服务
#define ServiceUUID @"59889B5B-4716-4F03-B480-5659CB289AC3"
//读特征
#define CharacteristicUUID @"7F5BCCCE-BC8C-4779-9B9F-0094324BF70C"
//写特征
#define WriteCharacteristicUUID @"7D1AF1E0-F1A7-4A47-982D-19683D796A7C"
//订阅特征
#define NotifyCharacteristicUUID @"A4C4CC7E-1E39-48EA-8BC0-004681DD10A2"
#endif /* CoreBluetooth_h */

//
//  PhoneVC.m
//  01-蓝牙通信
//
//  Created by laimin on 2018/3/1.
//  Copyright © 2018年 laimin. All rights reserved.
//

#import "PhoneVC.h"
#import <CoreBluetooth/CoreBluetooth.h>
#import "CoreBluetooth.h"
@interface PhoneVC ()<CBCentralManagerDelegate, CBPeripheralDelegate>
@property (strong, nonatomic) CBCentralManager *centralManager;
//外部设备
@property (strong, nonatomic) CBPeripheral *peripheral;
@end

@implementation PhoneVC
- (IBAction)scanBluetoothDevice:(UIButton *)sender {
    
    self.centralManager = [[CBCentralManager alloc] initWithDelegate:self queue:dispatch_get_global_queue(0, 0)];
}
#pragma mark - 代理方法
#pragma mark - CBCentralManagerDelegate
- (void)centralManagerDidUpdateState:(CBCentralManager *)central
{
    /**
     CBManagerStateUnknown = 0,
     CBManagerStateResetting,
     CBManagerStateUnsupported,
     CBManagerStateUnauthorized,
     CBManagerStatePoweredOff,
     CBManagerStatePoweredOn,
     */
    switch (central.state) {
        case CBManagerStatePoweredOn:{
            NSLog(@"蓝牙功能已打开");
            CBUUID *uuid = [CBUUID UUIDWithString:ServiceUUID];
            [central scanForPeripheralsWithServices:@[uuid] options:nil];
        }
            break;
        case CBManagerStatePoweredOff:{
            NSLog(@"蓝牙功能已关闭");
        }
            break;
        default:
            break;
    }
}
- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary<NSString *,id> *)advertisementData RSSI:(NSNumber *)RSSI
{
    NSLog(@"peripheral = %@", peripheral);
    NSLog(@"advertisementData = %@", advertisementData);
    NSLog(@"RSSI = %@", RSSI);
    //绑定发现的外部设备
    self.peripheral = peripheral;
    //连接外部设备
    /**
     CBConnectPeripheralOptionNotifyOnConnectionKey
     CBConnectPeripheralOptionNotifyOnDisconnectionKey
     CBConnectPeripheralOptionNotifyOnNotificationKey
     */
    [self.centralManager connectPeripheral:self.peripheral options:@{
                                                                      CBConnectPeripheralOptionNotifyOnConnectionKey: @(1),
                                                                      CBConnectPeripheralOptionNotifyOnDisconnectionKey:@(1),
                                                                      CBConnectPeripheralOptionNotifyOnNotificationKey: @(1)
                                                                      }];
}
- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral
{
    peripheral.delegate = self;
    //发现设备的服务
    [peripheral discoverServices:@[[CBUUID UUIDWithString:ServiceUUID]]];
}
- (void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error
{
    NSLog(@"连接外部设备失败 error = %@", error);
}

#pragma mark - CBPeripheralDelegate
- (void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error
{
    if (error) {
        NSLog(@"发现服务失败 error = %@", error);
        return;
    }
    NSArray<CBService *> *services = peripheral.services;
    for (CBService *service in services) {
        NSLog(@"service = %@", service);
        if ([service.UUID isEqual:[CBUUID UUIDWithString:ServiceUUID]]) {
            NSLog(@"找到所需服务");
            //从服务中查找特征
            [peripheral discoverCharacteristics:@[[CBUUID UUIDWithString:CharacteristicUUID], [CBUUID UUIDWithString:WriteCharacteristicUUID], [CBUUID UUIDWithString:NotifyCharacteristicUUID]] forService:service];
        }
    }
}
- (void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error
{
    if (error) {
        NSLog(@"查找特征失败 error = %@", error);
        return;
    }
    //判断查找到的特征类型
    for (CBCharacteristic *characteristic in service.characteristics) {
        if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:CharacteristicUUID]]) {//查找到读特征
            //读取特征的值
            [peripheral readValueForCharacteristic:characteristic];
        } else if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:WriteCharacteristicUUID]]) {//查找到写特征
            [peripheral writeValue:[@"我是主机，请从机们放下武器，双手抱头，投降吧！" dataUsingEncoding:NSUTF8StringEncoding] forCharacteristic:characteristic type:CBCharacteristicWriteWithResponse];
        } else if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:NotifyCharacteristicUUID]]) {//查找到写特征
            NSLog(@"查找到了订阅特征值");
            //订阅特征
            [peripheral setNotifyValue:YES forCharacteristic:characteristic];
        }
    }
}
- (void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
{
    if (error) {
        NSLog(@"读取特征值失败 error = %@", error);
        return;
    }
    NSData *data = characteristic.value;
    NSString *dataString = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
    NSLog(@"characteristic = %@ dataString = %@", characteristic, dataString);
}
/**
 查看=写特征的结果
 */
- (void)peripheral:(CBPeripheral *)peripheral didWriteValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
{
    if (error) {
        NSLog(@"写特征失败 error = %@", error);
        return;
    }
    NSLog(@"写特征成功 characteristic = %@", characteristic);
}
@end

//
//  DeviceVC.m
//  01-蓝牙通信
//
//  Created by laimin on 2018/3/1.
//  Copyright © 2018年 laimin. All rights reserved.
//

#import "DeviceVC.h"
#import <CoreBluetooth/CoreBluetooth.h>
#import "CoreBluetooth.h"
#import "MoreVC.h"
@interface DeviceVC ()<CBPeripheralManagerDelegate>
@property (weak, nonatomic) IBOutlet UILabel *showLabel;
@property (strong, nonatomic) CBPeripheralManager *peripheralManager;
//订阅特征
@property (strong, nonatomic) CBMutableCharacteristic *notifyCharacteristic;
//订阅的主机
@property (strong, nonatomic) CBCentral *subscribeCentral;
@end

@implementation DeviceVC
- (IBAction)pushAction:(UIButton *)sender {
    MoreVC *vc = [[MoreVC alloc]init];
    
    WEAK_SELF
//    __weak typeof(self) weakSelf = self;
    vc.moreBlock = ^(NSString *moreStr) {
//        __strong typeof(self) strongSelf = weakSelf;
        STRONG_SELF
        strongSelf.showLabel.text = moreStr;
    };
    [self.navigationController pushViewController:vc animated:YES];
}

- (IBAction)broadcast:(id)sender
{
    self.peripheralManager = [[CBPeripheralManager alloc]initWithDelegate:self queue:dispatch_get_global_queue(0, 0)];
    
}
#pragma mark - 代理方法
#pragma mark - CBPeripheralManagerDelegate
- (void)peripheralManagerDidUpdateState:(CBPeripheralManager *)peripheral
{
    /**
     typedef NS_ENUM(NSInteger, CBManagerState) {
     CBManagerStateUnknown = 0,
     CBManagerStateResetting,
     CBManagerStateUnsupported,
     CBManagerStateUnauthorized,
     CBManagerStatePoweredOff,
     CBManagerStatePoweredOn,
     } NS_ENUM_AVAILABLE(10_13, 10_0);
     */
    switch (peripheral.state) {
        case CBManagerStatePoweredOn:
        {
            NSLog(@"蓝牙设备打开");
            
            //准备数据
            [self preparaDataForBroadca];
        }
            break;
     case CBManagerStatePoweredOff:
        {
            NSLog(@"蓝牙设备未打开");
        }
            break;
        case CBManagerStateUnsupported:{
            NSLog(@"不支持蓝牙");
        }
            break;
        default:
            break;
    }
}
/**
 准备广播的数据
 */
- (void)preparaDataForBroadca
{
    //=================== 添加服务 ===================
    //在终端使用 uuidgen 生成随机的唯一 UUID
    CBUUID *serviceUUID = [CBUUID UUIDWithString:ServiceUUID];
    CBMutableService *service = [[CBMutableService alloc]initWithType:serviceUUID primary:YES];
    //服务添加特征
    //=================== 添加读特征 ===================
    CBUUID *characteristicUUID = [CBUUID UUIDWithString:CharacteristicUUID];
    NSData *data = [@"你发现我了？我是一个蓝牙设备" dataUsingEncoding:NSUTF8StringEncoding];
    CBMutableCharacteristic *characteristic = [[CBMutableCharacteristic alloc] initWithType:characteristicUUID properties:CBCharacteristicPropertyRead value:data permissions:CBAttributePermissionsReadable];
    //=================== 添加写特征 ===================
    CBUUID *writeCharacteristicUUID = [CBUUID UUIDWithString:WriteCharacteristicUUID];
    CBMutableCharacteristic *writeCharacteristic = [[CBMutableCharacteristic alloc]initWithType:writeCharacteristicUUID properties:CBCharacteristicPropertyWrite value:nil permissions:CBAttributePermissionsWriteable];
    //=================== 添加订阅特征 ===================
    CBUUID *notifyUUID = [CBUUID UUIDWithString:NotifyCharacteristicUUID];
    _notifyCharacteristic = [[CBMutableCharacteristic alloc]initWithType:notifyUUID properties:CBCharacteristicPropertyNotify value:nil permissions:CBAttributePermissionsReadable];
    
    service.characteristics = @[characteristic, writeCharacteristic, _notifyCharacteristic];
    
    [self.peripheralManager addService:service];
}
- (void)peripheralManager:(CBPeripheralManager *)peripheral didAddService:(CBService *)service error:(NSError *)error
{
    if (errno) {
        NSLog(@"添加服务失败 %@", error);
        return;
    }
    
    //开始广播
    /**
     advertisementData
     An optional dictionary containing the data you want to advertise. The possible keys of an advertisementData dictionary are detailed in CBCentralManagerDelegate. That said, only two of the keys are supported for peripheral manager objects: CBAdvertisementDataLocalNameKey and CBAdvertisementDataServiceUUIDsKey.
     SDKs    iOS 6.0+, macOS 10.9+, tvOS 9.0+, watchOS 4.0+
     Declared In    Core Bluetooth
     More    Method Reference
     */
    CBUUID *serviceUUID = [CBUUID UUIDWithString:ServiceUUID];
    NSDictionary *parameters = @{
                                       CBAdvertisementDataLocalNameKey: @"iPhoneX",
                                       CBAdvertisementDataServiceUUIDsKey: @[serviceUUID]
                                       };
    [peripheral startAdvertising:parameters];
}
- (void)peripheralManagerDidStartAdvertising:(CBPeripheralManager *)peripheral error:(NSError *)error
{
    if (error) {
        NSLog(@"广播出错 %@", error);
        return;
    }
    
    NSLog(@"正在广播......");
}
/**
 接收到主机的写特征
 */
- (void)peripheralManager:(CBPeripheralManager *)peripheral didReceiveWriteRequests:(NSArray<CBATTRequest *> *)requests
{
    for (CBATTRequest *request in requests) {
        NSLog(@"request.dataString = %@", [[NSString alloc]initWithData:request.value encoding:NSUTF8StringEncoding]);
    }
}

/**
 有人订阅
 */
- (void)peripheralManager:(CBPeripheralManager *)peripheral central:(CBCentral *)central didSubscribeToCharacteristic:(CBCharacteristic *)characteristic
{
    NSLog(@"有人订阅了特征");
    self.subscribeCentral = central;
}
/**
 修改订阅特征的值
 */
static int subscribeValue = 0;
- (IBAction)changeNotifyValue:(id)sender {
    NSLog(@"正在修改订阅特征值");
    [self.peripheralManager updateValue:[[NSString stringWithFormat:@"%d", subscribeValue] dataUsingEncoding:NSUTF8StringEncoding] forCharacteristic:_notifyCharacteristic onSubscribedCentrals:@[_subscribeCentral]];
    subscribeValue++;
}
@end

最后编辑于：2018.03.01 19:30:21

人面猴
序言：七十年代末，一起剥皮案震惊了整个滨河市，随后出现的几起案子，更是在滨河造成了极大的恐慌，老刑警刘岩，带你破解...
沈念sama阅读 205,033评论 6赞 478
死咒
序言：滨河连续发生了三起死亡事件，死亡现场离奇诡异，居然都是意外死亡，警方通过查阅死者的电脑和手机，发现死者居然都...
沈念sama阅读 87,725评论 2赞 381
救了他两次的神仙让他今天三更去死
文/潘晓璐我一进店门，熙熙楼的掌柜王于贵愁眉苦脸地迎上来，“玉大人，你说我怎么就摊上这事。” “怎么了？”我有些...
开封第一讲书人阅读 151,473评论 0赞 338
道士缉凶录：失踪的卖姜人
文/不坏的土叔我叫张陵，是天一观的道长。经常有香客问我，道长，这世上最难降的妖魔是什么？我笑而不...
开封第一讲书人阅读 54,846评论 1赞 277
港岛之恋（遗憾婚礼）
正文为了忘掉前任，我火速办了婚礼，结果婚礼上，老公的妹妹穿的比我还像新娘。我一直安慰自己，他们只是感情好，可当我...
茶点故事阅读 63,848评论 5赞 368
恶毒庶女顶嫁案：这布局不是一般人想出来的
文/花漫我一把揭开白布。她就那样静静地躺着，像睡着了一般。火红的嫁衣衬着肌肤如雪。梳的纹丝不乱的头发上，一...
开封第一讲书人阅读 48,691评论 1赞 282
城市分裂传说
那天，我揣着相机与录音，去河边找鬼。笑死，一个胖子当着我的面吹牛，可吹牛的内容都是我干的。我是一名探鬼主播，决...
沈念sama阅读 38,053评论 3赞 399
双鸳鸯连环套：你想象不到人心有多黑
文/苍兰香墨我猛地睁开眼，长吁一口气：“原来是场噩梦啊……” “哼！你这毒妇竟也来了？” 一声冷哼从身侧响起，我...
开封第一讲书人阅读 36,700评论 0赞 258
万荣杀人案实录
序言：老挝万荣一对情侣失踪，失踪者是张志新（化名）和其女友刘颖，没想到半个月后，有当地人在树林里发现了一具尸体，经...
沈念sama阅读 42,856评论 1赞 300
护林员之死
正文独居荒郊野岭守林人离奇死亡，尸身上长有42处带血的脓包…… 初始之章·张勋以下内容为张勋视角年9月15日...
茶点故事阅读 35,676评论 2赞 323
白月光启示录
正文我和宋清朗相恋三年，在试婚纱的时候发现自己被绿了。大学时的朋友给我发了我未婚夫和他白月光在一起吃饭的照片。...
茶点故事阅读 37,787评论 1赞 333
活死人
序言：一个原本活蹦乱跳的男人离奇死亡，死状恐怖，灵堂内的尸体忽然破棺而出，到底是诈尸还是另有隐情，我是刑警宁泽，带...
沈念sama阅读 33,430评论 4赞 321
日本核电站爆炸内幕
正文年R本政府宣布，位于F岛的核电站，受9级特大地震影响，放射性物质发生泄漏。R本人自食恶果不足惜，却给世界环境...
茶点故事阅读 39,034评论 3赞 307
男人毒药：我在死后第九天来索命
文/蒙蒙一、第九天我趴在偏房一处隐蔽的房顶上张望。院中可真热闹，春花似锦、人声如沸。这庄子的主人今日做“春日...
开封第一讲书人阅读 29,990评论 0赞 19
一桩弑父案，背后竟有这般阴谋
文/苍兰香墨我抬头看了看天上的太阳。三九已至，却和暖如春，着一层夹袄步出监牢的瞬间，已是汗流浃背。一阵脚步声响...
开封第一讲书人阅读 31,218评论 1赞 260
情欲美人皮
我被黑心中介骗来泰国打工，没想到刚下飞机就差点儿被人妖公主榨干…… 1. 我叫王不留，地道东北人。一个月前我还...
沈念sama阅读 45,174评论 2赞 352
代替公主和亲
正文我出身青楼，却偏偏与公主长得像，于是被迫代替她去往敌国和亲。传闻我的和亲对象是个残疾皇子，可洞房花烛夜当晚...
茶点故事阅读 42,526评论 2赞 343

iOS蓝牙4.0基本功能实现

推荐阅读更多精彩内容