[蓝牙]iOS蓝牙调用的一般流程

原文 /article/5665510.html

一、服务端（也叫周边设备吧。。脑残的翻译）

1.实现类必须遵守协议 CBPeripheralManagerDelegate

2.需要的主要类有：

@property ( strong , nonatomic ) CBPeripheralManager *peripheraManager;

@property(strong,nonatomic) CBMutableCharacteristic *customerCharacteristic;

@property (strong,nonatomic) CBMutableService *customerService;

3.调用流程代码中有注释

//
//  ViewController.m
//  BlueToothDemo
//
//  Created by PSH_Chen_Tao on 7/3/13.
//  Copyright (c) 2013 wolfman. All rights reserved.
//

#import "ViewController.h"
static NSString *const kCharacteristicUUID = @"CCE62C0F-1098-4CD0-ADFA-C8FC7EA2EE90";

static NSString *const kServiceUUID = @"50BD367B-6B17-4E81-B6E9-F62016F26E7B";
@interface ViewController ()

@end

@implementation ViewController

@synthesize peripheraManager;
@synthesize customerCharacteristic;
@synthesize customerService;
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
//初始化后会直接调用代理的  - (void)peripheralManagerDidUpdateState:(CBPeripheralManager *)peripheral

peripheraManager = [[CBPeripheralManager alloc]initWithDelegate:self queue:nil];
//  [peripheraManager startAdvertising:nil];

}

-(void)setUp{
CBUUID *characteristicUUID = [CBUUID UUIDWithString:kCharacteristicUUID];
customerCharacteristic = [[CBMutableCharacteristic alloc]initWithType:characteristicUUID properties:CBCharacteristicPropertyNotify value:nil permissions:CBAttributePermissionsReadable];
CBUUID *serviceUUID = [CBUUID UUIDWithString:kServiceUUID];
customerService = [[CBMutableService alloc]initWithType:serviceUUID primary:YES];
[customerService setCharacteristics:@[characteristicUUID]];
//添加后就会调用代理的- (void)peripheralManager:(CBPeripheralManager *)peripheral didAddService:(CBService *)service error:(NSError *)error
[peripheraManager addService:customerService];

}

- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

#pragma  mark -- CBPeripheralManagerDelegate
- (void)peripheralManagerDidUpdateState:(CBPeripheralManager *)peripheral{
switch (peripheral.state) {
//在这里判断蓝牙设别的状态  当开启了则可调用  setUp方法(自定义)
case CBPeripheralManagerStatePoweredOn:
NSLog(@"powered on");
[self setUp];
break;
case CBPeripheralManagerStatePoweredOff:
NSLog(@"powered off");
break;

default:
break;
}
}

- (void)peripheralManager:(CBPeripheralManager *)peripheral didAddService:(CBService *)service error:(NSError *)error{
if (error == nil) {
//添加服务后可以在此向外界发出通告 调用完这个方法后会调用代理的
//(void)peripheralManagerDidStartAdvertising:(CBPeripheralManager *)peripheral error:(NSError *)error
[peripheraManager startAdvertising:@{CBAdvertisementDataLocalNameKey : @"Service",CBAdvertisementDataServiceUUIDsKey : [CBUUID UUIDWithString:kServiceUUID]}];
}

}

- (void)peripheralManagerDidStartAdvertising:(CBPeripheralManager *)peripheral error:(NSError *)error{
NSLog(@"in peripheralManagerDidStartAdvertisiong:error");
}
@end

二、客户端（也叫中心设备吧）

1.实现类要遵守协议 <CBCentralManagerDelegate,CBPeripheralDelegate>

2.主要用到的类有

@property ( strong , nonatomic ) CBCentralManager *centralManager;

@property ( strong , nonatomic ) NSMutableData *mutableData;

@property ( strong , nonatomic ) CBPeripheral *peripheral;

3.一般的流程

1 //
2 //  ViewController.m
3 //  BlueToothClient
4 //
5 //  Created by PSH_Chen_Tao on 7/3/13.
6 //  Copyright (c) 2013 wolfman. All rights reserved.
7 //
8
9 #import "ViewController.h"
10 static NSString *const kCharacteristicUUID = @"CCE62C0F-1098-4CD0-ADFA-C8FC7EA2EE90";
11
12 static NSString *const kServiceUUID = @"50BD367B-6B17-4E81-B6E9-F62016F26E7B";
13 @interface ViewController ()
14
15 @end
16
17 @implementation ViewController
18
19 @synthesize centralManager;
20 @synthesize mutableData;
21 @synthesize peripheral;
22
23 - (void)viewDidLoad
24 {
25     [super viewDidLoad];
26     // Do any additional setup after loading the view, typically from a nib.
27     //初始化后会调用代理CBCentralManagerDelegate 的 - (void)centralManagerDidUpdateState:(CBCentralManager *)central
28     centralManager = [[CBCentralManager alloc]initWithDelegate:self queue:nil];
29
30 }
31
32 - (void)didReceiveMemoryWarning
33 {
34     [super didReceiveMemoryWarning];
35     // Dispose of any resources that can be recreated.
36 }
37
38 #pragma  mark -- CBCentralManagerDelegate
39 - (void)centralManagerDidUpdateState:(CBCentralManager *)central{
40     switch (central.state) {
41             //判断状态开始扫瞄周围设备 第一个参数为空则会扫瞄所有的可连接设备  你可以
42             //指定一个CBUUID对象 从而只扫瞄注册用指定服务的设备
43             //scanForPeripheralsWithServices方法调用完后会调用代理CBCentralManagerDelegate的
44             //- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI方法
45         case CBCentralManagerStatePoweredOn:
46             [centralManager scanForPeripheralsWithServices:@[[CBUUID UUIDWithString:kServiceUUID]] options:@{CBCentralManagerScanOptionAllowDuplicatesKey : YES}];
47
48
49             break;
50
51         default:
52             break;
53     }
54 }
55
56 - (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI{
57     if (peripheral) {
58         self.peripheral = peripheral;
59         //发现设备后即可连接该设备 调用完该方法后会调用代理CBCentralManagerDelegate的- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral表示连接上了设别
60         //如果不能连接会调用 - (void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error
61         [centralManager connectPeripheral:peripheral options:@{CBConnectPeripheralOptionNotifyOnConnectionKey : YES}];
62     }
63 }
64
65 - (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral{
66     NSLog(@"has connected");
67     [mutableData setLength:0];
68     self.peripheral.delegate = self;
69     //此时设备已经连接上了  你要做的就是找到该设备上的指定服务 调用完该方法后会调用代理CBPeripheralDelegate（现在开始调用另一个代理的方法了）的
70     //- (void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error
71     [self.peripheral discoverServices:@[[CBUUID UUIDWithString:kServiceUUID]]];
72
73 }
74
75
76 - (void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error{
77     //此时连接发生错误
78     NSLog(@"connected periphheral failed");
79 }
80
81
82 #pragma mark -- CBPeripheralDelegate
83 - (void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error{
84     if (error==nil) {
85         //在这个方法中我们要查找到我们需要的服务  然后调用discoverCharacteristics方法查找我们需要的特性
86         //该discoverCharacteristics方法调用完后会调用代理CBPeripheralDelegate的
87         //- (void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error
88         for (CBService *service in peripheral.services) {
89             if ([service.UUID isEqual:[CBUUID UUIDWithString:kServiceUUID]]) {
90                 [peripheral discoverCharacteristics:@[[CBUUID UUIDWithString:kCharacteristicUUID]] forService:service];
91             }
92         }
93     }
94 }
95
96 - (void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error{
97     if (error==nil) {
98         //在这个方法中我们要找到我们所需的服务的特性 然后调用setNotifyValue方法告知我们要监测这个服务特性的状态变化
99         //当setNotifyValue方法调用后调用代理CBPeripheralDelegate的- (void)peripheral:(CBPeripheral *)peripheral didUpdateNotificationStateForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
100         for (CBCharacteristic *characteristic in service.characteristics) {
101             if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:kCharacteristicUUID]]) {
102
103                 [peripheral setNotifyValue:YES forCharacteristic:characteristic];
104             }
105         }
106     }
107 }
108
109 - (void)peripheral:(CBPeripheral *)peripheral didUpdateNotificationStateForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error{
110     if (error==nil) {
111         //调用下面的方法后 会调用到代理的- (void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
112         [peripheral readValueForCharacteristic:characteristic];
113     }
114 }
115
116
117 - (void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error{
118
119 }
120
121 @end