提示:本文主要是講解藍(lán)牙中心管理者和外設(shè)管理者之間的通訊過程，沒有實(shí)際的意義，因?yàn)閭鬏斒茏止?jié)限制，效率低。
老樣子，先附上效果圖和Demo
外設(shè)模式
中心模式
Demo
https://github.com/chenfanfang/CollectionsOfExample
運(yùn)行程序
1、首先得準(zhǔn)備兩部蘋果手機(jī)，必須支持BLE, >=iPhone 4s即可。
2、將程序運(yùn)行到兩部手機(jī)上
3、進(jìn)入 “聊天(CoreBluetooth實(shí)戰(zhàn)1)”
4、一部手機(jī)進(jìn)入中心模式、另一部手機(jī)進(jìn)入外設(shè)模式 (記得兩部手機(jī)都要開啟藍(lán)牙哦)
寫在前面的廢話
由于懶，時隔大半年沒寫技術(shù)文章了，今天心血來潮來發(fā)表一篇文章。由于以前沒有做過藍(lán)牙的項(xiàng)目，好奇心也蠻強(qiáng)的，想知道藍(lán)牙之間的通訊是怎樣的，早就在去年6月份的時候開始看藍(lán)牙的資料，但是基本都是斷斷續(xù)續(xù)，沒有一股氣完成對藍(lán)牙的研究(當(dāng)初還買了藍(lán)牙開發(fā)板，并且傻瓜式地將程序燒錄進(jìn)去，就是效果還沒完全寫出來，等有時間會寫一篇真正藍(lán)牙實(shí)戰(zhàn)的文章，你也別問我為嘛不用LightBlue，因?yàn)槟菚r我沒有第二部手機(jī)并且覺得實(shí)物實(shí)戰(zhàn)比較好)。本文demo核心內(nèi)容在去年9月份左右的時候完成的(參照了幾個demo，由于時隔太久，無法將所參照的demo所在連接找出來)，但是對界面美化要求程度比較高，一直沒有發(fā)布出來，昨天套了個即時通訊界面的框架JSQMessagesViewController中demo的界面，感覺界面效果還行，稱熱打鐵，寫一篇相關(guān)文章。我已經(jīng)將藍(lán)牙通訊的相關(guān)代碼和界面相關(guān)代碼分離開來，不會影響大家對藍(lán)牙代碼的閱讀。由于demo中注釋比較詳細(xì)，本文就不做過多的闡述，直接附上代碼。
相關(guān)藍(lán)牙資料
若對藍(lán)牙不是太了解的朋友，在此推薦幾篇藍(lán)牙相關(guān)博客
iOS藍(lán)牙開發(fā)（一）藍(lán)牙相關(guān)基礎(chǔ)知識
iOS藍(lán)牙開發(fā)（二）ios連接外設(shè)的代碼實(shí)現(xiàn)
iOS藍(lán)牙開發(fā)（三）app作為外設(shè)被連接的實(shí)現(xiàn)
中心管理者
中心管理者相關(guān)流程：(以下流程摘抄自一個demo)
1，主流成：程序之行，就進(jìn)入回調(diào)函數(shù)centralManagerDidUpdateState，這個相當(dāng)于起步函數(shù)
2，半主流程：上一步中，centralManager調(diào)用scan函數(shù)，向周邊搜尋服務(wù)
3，當(dāng)掃描到時，會觸發(fā)centralManager的代理的centralManager：didDiscoverPeripheral函數(shù)，賦值周邊成員，并試圖與其建立連接
4，如果建立建立連接失敗，會調(diào)用代理的centralManager:didFailToConnectPeripheral:函數(shù)
4，如果成功，會觸發(fā)centralManager:didConnectPeripheral:，這時候講viewc設(shè)置為周邊成員的代理
5，在上部的回調(diào)函數(shù)中，調(diào)用周邊的discoverServices方法，去發(fā)現(xiàn)服務(wù)
6，當(dāng)周邊發(fā)現(xiàn)服務(wù)時，會觸發(fā)周邊的代理的peripheral:didDiscoverServices:
7，在上述回調(diào)函數(shù)中，周邊針對每一個發(fā)現(xiàn)的服務(wù)去搜尋對應(yīng)特征
8，發(fā)現(xiàn)對應(yīng)特征后是，會觸發(fā)周邊的代理的peripheral:didDiscoverCharacteristicsForService:函數(shù)
9，在上部的回調(diào)函數(shù)中，判斷發(fā)現(xiàn)的特征是否是感興趣的特征，如果是，則通過設(shè)定特征通知狀態(tài)為真，來預(yù)訂該特征。此時會觸發(fā)服務(wù)端didSubscribeToCharacteristic函數(shù)。
10，當(dāng)周邊的特征通知狀態(tài)發(fā)生變化時，會觸發(fā)周邊代理的peripheral:didUpdateNotificationStateForCharacteristic:,并沒什么卵用，這個回調(diào)函數(shù)。
10，服務(wù)端的調(diào)用updatevalue函數(shù)，會觸發(fā)客戶端的didUpdateValueForCharacteristic:函數(shù)，從而獲得服務(wù)端傳遞的字符串
另外，中央管理器調(diào)用取消周邊連接函數(shù)，會觸發(fā)，中央管理器代理的centralManager:didDisconnectPeripheral方法，用于對斷開連接后進(jìn)行后續(xù)處理
中心管理者(CBCentralManager)相關(guān)代碼如下
//
// CBCentralManagerController.m
// CoreBluetooth_Demo
//
// Created by mac on 16/9/9.
// Copyright ? 2016年 chenfanfang. All rights reserved.
//
#import "CBCentralManagerController.h"
#import <CoreBluetooth/CoreBluetooth.h>
//可通過終端命令 uuidgen來生成
#define TRANSFER_SERVICE_UUID @"D63D44E5-E798-4EA5-A1C0-3F9EEEC2CDEB"
#define TRANSFER_CHARACTERISTIC_UUID @"1652CAD2-6B0D-4D34-96A0-75058E606A98"
@interface CBCentralManagerController ()<CBCentralManagerDelegate, CBPeripheralDelegate>
/** 中心管理者 */
@property (strong, nonatomic) CBCentralManager *centralManager;
/** 發(fā)現(xiàn)的外設(shè) */
@property (strong, nonatomic) CBPeripheral *discoveredPeripheral;
/** 當(dāng)前的特征 */
@property (nonatomic, strong) CBCharacteristic *characteristic;
/** 數(shù)據(jù) */
@property (strong, nonatomic) NSMutableData *data;
@end
@implementation CBCentralManagerController
- (void)viewDidLoad {
[super viewDidLoad];
self.navigationItem.title = @"中心模式";
// 設(shè)置CBCentralManager
_centralManager = [[CBCentralManager alloc] initWithDelegate:self queue:nil];
// 保存接收數(shù)據(jù)
_data = [[NSMutableData alloc] init];
//菊花轉(zhuǎn)動
[self.activityIndicatorView startAnimating];
}
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
[self.centralManager stopScan];
[self cleanup];
[self.activityIndicatorView stopAnimating];
self.centralManager = nil;
NSLog(@"掃描停止");
}
- (void)dealloc {
NSLog(@"%@控制器銷毀成功，無內(nèi)存泄漏",NSStringFromClass([self class]));
}
//=================================================================
// CBCentralManagerDelegate
//=================================================================
#pragma mark - CBCentralManagerDelegate
//設(shè)置成功回調(diào)方法
- (void)centralManagerDidUpdateState:(CBCentralManager *)central {
if (central.state != CBCentralManagerStatePoweredOn) {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"溫馨提示" message:@"請打開您的藍(lán)牙" delegate:nil cancelButtonTitle:@"確定" otherButtonTitles:nil, nil];
[alertView show];
return;
}
//開始掃描
[self scan];
}
/** 通過制定的128位的UUID，掃描外設(shè)
*/
- (void)scan {
[self.activityIndicatorView startAnimating];
//掃描
[self.centralManager scanForPeripheralsWithServices:@[[CBUUID UUIDWithString:TRANSFER_SERVICE_UUID]] options:@{ CBCentralManagerScanOptionAllowDuplicatesKey : @YES }];
NSLog(@"正在掃描外設(shè)");
}
/** 停止掃描
*/
- (void)stop {
[self.activityIndicatorView stopAnimating];
[self.centralManager stopScan];
NSLog(@"停止掃描外設(shè)");
}
//掃描成功調(diào)用此方法
- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI {
NSLog(@"發(fā)現(xiàn)外設(shè) %@ at %@", peripheral.name, RSSI);
if (self.discoveredPeripheral != peripheral) {
self.discoveredPeripheral = peripheral;
NSLog(@"連接外設(shè) %@", peripheral);
[self.centralManager connectPeripheral:peripheral options:nil];
}
}
- (void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error {
NSLog(@"連接失敗 %@. (%@)", peripheral, [error localizedDescription]);
[self cleanup];
}
//連接外設(shè)成功
- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral {
[self stop];
NSLog(@"停止掃描外設(shè)");
[self.data setLength:0];//重置data屬性
peripheral.delegate = self;//設(shè)置外設(shè)對象的委托為self
NSLog(@"外設(shè)已連接,正在搜尋服務(wù)...");
[peripheral discoverServices:@[[CBUUID UUIDWithString:TRANSFER_SERVICE_UUID]]];
}
//=================================================================
// CBPeripheralDelegate
//=================================================================
#pragma mark - CBPeripheralDelegate
//發(fā)現(xiàn)服務(wù)成功
- (void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error {
if (error) {
NSLog(@"Error discovering services: %@", [error localizedDescription]);
[self cleanup];
return;
}
NSLog(@"成功發(fā)現(xiàn)服務(wù)，正在搜尋特征...");
// 發(fā)現(xiàn)特征
for (CBService *service in peripheral.services) {
[peripheral discoverCharacteristics:@[[CBUUID UUIDWithString:TRANSFER_CHARACTERISTIC_UUID]] forService:service];
}
}
//發(fā)現(xiàn)特征成功
- (void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error {
if (error) {
NSLog(@"發(fā)現(xiàn)特征錯誤: %@", [error localizedDescription]);
[self cleanup];
return;
}
NSLog(@"成功發(fā)現(xiàn)特征，正在預(yù)定特征...");
for (CBCharacteristic *characteristic in service.characteristics) {
if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:TRANSFER_CHARACTERISTIC_UUID]]) {
// 預(yù)定特征
[peripheral setNotifyValue:YES forCharacteristic:characteristic];//觸發(fā)服務(wù)端(外設(shè))didSubscribeToCharacteristic函數(shù)
self.characteristic = characteristic;
[self.activityIndicatorView stopAnimating];
NSLog(@"找到需要的特征，預(yù)定成功");
}
}
}
//特征值發(fā)生變化
- (void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error {
if (error) {
NSLog(@"發(fā)現(xiàn)特征錯誤:: %@", [error localizedDescription]);
return;
}
NSLog(@"特征值發(fā)生變化");
NSString *stringFromData = [[NSString alloc] initWithData:characteristic.value encoding:NSUTF8StringEncoding];
// 判斷是否為數(shù)據(jù)結(jié)束
if ([stringFromData isEqualToString:@"END"]) {
// 顯示數(shù)據(jù)
NSString* recString = [[NSString alloc] initWithData:self.data encoding:NSUTF8StringEncoding];
[self addReceiveMessage:recString];
self.data.length = 0;
return;
}
// 接收數(shù)據(jù)追加到data屬性中
[self.data appendData:characteristic.value];
}
//特征通知狀態(tài)發(fā)生變化
- (void)peripheral:(CBPeripheral *)peripheral didUpdateNotificationStateForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error {
if (error) {
NSLog(@"特征通知狀態(tài)變化錯誤: %@", error.localizedDescription);
}
// 如果沒有特征傳輸過來則退出（如果不是我們感興趣的特質(zhì)）
if (![characteristic.UUID isEqual:[CBUUID UUIDWithString:TRANSFER_CHARACTERISTIC_UUID]]) {
return;
}
NSLog(@"特征通知狀態(tài)發(fā)生變化");
// 特征通知已經(jīng)開始
if (characteristic.isNotifying) {
NSLog(@"特征通知已經(jīng)開始 %@", characteristic);
}
// 特征通知已經(jīng)停止
else {
NSLog(@"特征通知已經(jīng)停止 %@", characteristic);
[self.centralManager cancelPeripheralConnection:peripheral];
}
}
//與外設(shè)連接斷開時回調(diào)
- (void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error {
NSLog(@"外設(shè)已經(jīng)斷開");
self.discoveredPeripheral = nil;
//外設(shè)已經(jīng)斷開情況下，重新掃描
[self scan];
}
/** 清除方法
*/
- (void)cleanup {
NSLog(@"清除訂閱特征");
// 如果沒有連接則退出
if (self.discoveredPeripheral.state != CBPeripheralStateConnected) {
return;
}
// 判斷是否已經(jīng)預(yù)定了特征
for (CBService *service in self.discoveredPeripheral.services) {
for (CBCharacteristic *characteristic in service.characteristics) {
if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:TRANSFER_CHARACTERISTIC_UUID]]) {
if (characteristic.isNotifying) {
//停止接收特征通知
[self.discoveredPeripheral setNotifyValue:NO forCharacteristic:characteristic];
//斷開與外設(shè)連接
[self.centralManager cancelPeripheralConnection:self.discoveredPeripheral];
return;
}
}
}
}
}
//添加從外設(shè)發(fā)來的消息
-(void)addReceiveMessage:(NSString*)message{
NSLog(@"收到從外設(shè)發(fā)來的消息:\n%@",message);
//下面代碼無需研究，只是為了顯示在屏幕上
[self receiveMessage:message senderId:kJSQDemoAvatarIdCook senderName:kJSQDemoAvatarDisplayNameCook];
}
//=================================================================
// 發(fā)送文本數(shù)據(jù)
//=================================================================
#pragma mark - 發(fā)送文本數(shù)據(jù)
- (void)didPressSendButton:(UIButton *)button
withMessageText:(NSString *)text
senderId:(NSString *)senderId
senderDisplayName:(NSString *)senderDisplayName
date:(NSDate *)date {
if (self.activityIndicatorView.isAnimating) {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"溫馨提示" message:@"沒有與外設(shè)建立鏈接，無法發(fā)送數(shù)據(jù)" delegate:nil cancelButtonTitle:@"" otherButtonTitles:nil, nil];
[alertView show];
return;
}
NSLog(@"要發(fā)送的消息為:\n%@",text);
NSData *writeData = [text dataUsingEncoding:NSUTF8StringEncoding];
if (self.characteristic.properties & CBCharacteristicPropertyWrite) {
[self.discoveredPeripheral writeValue:writeData forCharacteristic:self.characteristic type:CBCharacteristicWriteWithResponse];
}
//下面代碼無需研究，只是為了顯示在屏幕上
[super didPressSendButton:button withMessageText:text senderId:senderId senderDisplayName:senderDisplayName date:date];
}
- (void)peripheral:(CBPeripheral *)peripheral didWriteValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error {
NSLog(@"給外設(shè)寫入數(shù)據(jù)成功");
}
//=================================================================
// 和界面相關(guān)，請忽略
//=================================================================
#pragma mark - 和界面相關(guān)，請忽略
- (NSString *)senderId {
return kJSQDemoAvatarIdWoz;
}
@end
外設(shè)管理者
中心管理者相關(guān)流程：(以下流程摘抄自一個demo)
1，入口函數(shù)，peripheralManagerDidUpdateState，處理：特征準(zhǔn)備，服務(wù)準(zhǔn)備的工作；設(shè)置服務(wù)的特征；將服務(wù)添加到周邊管理器上
2，服務(wù)添加成功，會觸發(fā)周邊管理器代理的peripheralManager:didAddService:
3，在上部的回調(diào)函數(shù)中，廣播廣播服務(wù)，等待中心即客戶端預(yù)訂改服務(wù)。。。
4，一旦客戶端預(yù)訂成功，則調(diào)用周邊管理器代理的peripheralManager:central:didSubscribeToCharacteristic:，表明管道已經(jīng)打通了，接下來將發(fā)送按鈕變?yōu)橛行顟B(tài)，由服務(wù)器決定是否發(fā)送
5，在上面的回調(diào)函數(shù)中，處理發(fā)送數(shù)據(jù)：通過調(diào)用周邊管理器的updateValue方法，來實(shí)現(xiàn)發(fā)送。這個應(yīng)該會觸發(fā)中央的peripheral:didUpdateValueForCharacteristic函數(shù)
外設(shè)管理者(CBPeripheralManager)相關(guān)代碼如下
//
// CBPeripheralManagerController.m
// CoreBluetooth_Demo
//
// Created by mac on 16/9/9.
// Copyright ? 2016年 chenfanfang. All rights reserved.
//
#import "CBPeripheralManagerController.h"
#import <CoreBluetooth/CoreBluetooth.h>
//可通過終端命令 uuidgen來生成
#define TRANSFER_SERVICE_UUID @"D63D44E5-E798-4EA5-A1C0-3F9EEEC2CDEB"
#define TRANSFER_CHARACTERISTIC_UUID @"1652CAD2-6B0D-4D34-96A0-75058E606A98"
//每次向中心設(shè)備發(fā)送數(shù)據(jù)的最大的數(shù)據(jù)量
#define SEND_DATA_MAX_AMOUNT 20
@interface CBPeripheralManagerController ()<CBPeripheralManagerDelegate>
/** 外設(shè)管理者 */
@property (strong, nonatomic) CBPeripheralManager *peripheralManager;
/** 特征 */
@property (strong, nonatomic) CBMutableCharacteristic *transferCharacteristic;
/** 需要發(fā)送的數(shù)據(jù) */
@property (strong, nonatomic) NSData *dataToSend;
/** 需要發(fā)送的數(shù)據(jù)的字節(jié)的下標(biāo)標(biāo)記 */
@property (nonatomic, readwrite) NSInteger sendDataIndex;
@end
@implementation CBPeripheralManagerController
- (void)viewDidLoad {
[super viewDidLoad];
self.navigationController.navigationBar.translucent = NO;
self.navigationItem.title = @"外設(shè)模式";
//設(shè)置CBPeripheralManager
_peripheralManager = [[CBPeripheralManager alloc] initWithDelegate:self queue:nil];
[self.activityIndicatorView startAnimating];
}
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
[self.peripheralManager stopAdvertising];
self.peripheralManager = nil;
}
- (void)dealloc {
NSLog(@"%@控制器銷毀成功，無內(nèi)存泄漏",NSStringFromClass([self class]));
}
//=================================================================
// CBPeripheralManagerDelegate
//=================================================================
#pragma mark - CBPeripheralManagerDelegate
//外設(shè)設(shè)置成功回調(diào)此方法
- (void)peripheralManagerDidUpdateState:(CBPeripheralManager *)peripheral {
if (peripheral.state != CBPeripheralManagerStatePoweredOn) {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"溫馨提示" message:@"請您打開藍(lán)牙" delegate:nil cancelButtonTitle:@"" otherButtonTitles:nil, nil];
[alertView show];
return;
}
NSLog(@"藍(lán)牙處于打開狀態(tài)");
// 初始化特征
self.transferCharacteristic = [[CBMutableCharacteristic alloc]
initWithType:[CBUUID UUIDWithString:TRANSFER_CHARACTERISTIC_UUID]
properties:CBCharacteristicPropertyNotify | CBCharacteristicPropertyWrite
value:nil
permissions:CBAttributePermissionsWriteable]; //CBAttributePermissionsReadable
// 初始化服務(wù)
CBMutableService *transferService = [[CBMutableService alloc]
initWithType:[CBUUID UUIDWithString:TRANSFER_SERVICE_UUID]
primary:YES];
// 添加特征到服務(wù)
transferService.characteristics = @[self.transferCharacteristic];
// 發(fā)布服務(wù)與特征(將服務(wù)添加到外設(shè)中)
[self.peripheralManager addService:transferService];
}
- (void)peripheralManager:(CBPeripheralManager *)peripheral
didAddService:(CBService *)service
error:(NSError *)error {
if (error) {
NSLog(@"添加服務(wù)失敗: %@", [error localizedDescription]);
}else{
NSLog( @"添加服務(wù)成功，準(zhǔn)備廣播..." );
[self.peripheralManager startAdvertising:@{ CBAdvertisementDataServiceUUIDsKey : @[[CBUUID UUIDWithString:TRANSFER_SERVICE_UUID]] }];
}
}
//中心管理者訂閱了特征，會回調(diào)該方法
- (void)peripheralManager:(CBPeripheralManager *)peripheral central:(CBCentral *)central didSubscribeToCharacteristic:(CBCharacteristic *)characteristic {
[self.activityIndicatorView stopAnimating];
NSLog(@"中心已經(jīng)訂閱了特征");
}
//中心管理者取消訂閱了特征，會回調(diào)該方法
- (void)peripheralManager:(CBPeripheralManager *)peripheral central:(CBCentral *)central didUnsubscribeFromCharacteristic:(CBCharacteristic *)characteristic {
[self.activityIndicatorView startAnimating];
NSLog(@"中心取消訂閱特征");
}
//向中心管理者發(fā)送數(shù)據(jù)
//注意，發(fā)送大量的數(shù)據(jù)時，需要將數(shù)據(jù)分成多個小數(shù)據(jù)發(fā)送，要不然會發(fā)送失敗
- (void)sendData {
/** 是否開始發(fā)送 END */
static BOOL sendingEND = NO;
//開始發(fā)送最后的 結(jié)束標(biāo)識符 END
if (sendingEND == YES) {
BOOL didSend = [self.peripheralManager updateValue:[@"END" dataUsingEncoding:NSUTF8StringEncoding] forCharacteristic:self.transferCharacteristic onSubscribedCentrals:nil];
if (didSend == YES) {
sendingEND = NO;
NSLog(@"發(fā)送數(shù)據(jù)完畢");
}
return;
}
//已經(jīng)發(fā)送完畢
if (self.sendDataIndex >= self.dataToSend.length) {
return;
}
BOOL didSend = YES;
//正在發(fā)送數(shù)據(jù)
while (didSend) {
//本次需要發(fā)送的數(shù)據(jù)量
NSInteger amountToSend = self.dataToSend.length - self.sendDataIndex;
//若發(fā)送的數(shù)量大于規(guī)定的最大發(fā)送的數(shù)據(jù)量
if (amountToSend > SEND_DATA_MAX_AMOUNT) amountToSend = SEND_DATA_MAX_AMOUNT;
//本次需要發(fā)送的數(shù)據(jù)
NSData *smallData = [NSData dataWithBytes:self.dataToSend.bytes + self.sendDataIndex length:amountToSend];
//發(fā)送數(shù)據(jù)
didSend = [self.peripheralManager updateValue:smallData forCharacteristic:self.transferCharacteristic onSubscribedCentrals:nil];
//發(fā)送數(shù)據(jù)失敗 直接return
if (didSend == NO) {
return;
}
//更新需要發(fā)送的數(shù)據(jù)的字節(jié)下標(biāo)
self.sendDataIndex += amountToSend;
//數(shù)據(jù)完全發(fā)送完成，記得需要發(fā)送一個結(jié)束的標(biāo)識
if (self.sendDataIndex >= self.dataToSend.length) {
sendingEND = YES;
BOOL endSent = [self.peripheralManager updateValue:[@"END" dataUsingEncoding:NSUTF8StringEncoding] forCharacteristic:self.transferCharacteristic onSubscribedCentrals:nil];
if (endSent) {
sendingEND = NO;
NSLog(@"發(fā)送數(shù)據(jù)完畢");
}
return;
}
}
}
//發(fā)送數(shù)據(jù)失敗后(發(fā)送數(shù)據(jù)的隊(duì)列已經(jīng)滿了)重新發(fā)送
- (void)peripheralManagerIsReadyToUpdateSubscribers:(CBPeripheralManager *)peripheral {
[self sendData];
}
- (void)peripheralManager:(CBPeripheralManager *)peripheral didReceiveWriteRequests:(NSArray<CBATTRequest *> *)requests {
CBATTRequest *request = requests.firstObject;
NSString *receiveMsg = [[NSString alloc] initWithData:request.value encoding:NSUTF8StringEncoding];
[peripheral respondToRequest:request withResult:CBATTErrorSuccess];
NSLog(@"收到從中心管理者發(fā)來的消息:\n%@",receiveMsg);
//下面代碼無需研究，只是為了顯示在屏幕上
[self receiveMessage:receiveMsg senderId:kJSQDemoAvatarIdWoz senderName:kJSQDemoAvatarDisplayNameWoz];
}
//=================================================================
// 發(fā)送文本數(shù)據(jù)
//=================================================================
#pragma mark - 發(fā)送文本數(shù)據(jù)
- (void)didPressSendButton:(UIButton *)button
withMessageText:(NSString *)text
senderId:(NSString *)senderId
senderDisplayName:(NSString *)senderDisplayName
date:(NSDate *)date {
NSLog(@"要發(fā)送的消息為:\n%@",text);
//判斷是否與中心管理者保持著鏈接
if (self.activityIndicatorView.isAnimating) {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"溫馨提示" message:@"沒有與中心管理者建立鏈接，無法發(fā)送數(shù)據(jù)" delegate:nil cancelButtonTitle:@"確定" otherButtonTitles:nil, nil];
[alertView show];
return;
}
self.sendDataIndex = 0;
self.dataToSend = [text dataUsingEncoding:NSUTF8StringEncoding];
[self sendData];
//下面代碼無需研究，只是為了顯示在屏幕上
[super didPressSendButton:button withMessageText:text senderId:senderId senderDisplayName:senderDisplayName date:date];
}
//=================================================================
// 和界面相關(guān)，請忽略
//=================================================================
#pragma mark - 和界面相關(guān)，請忽略
- (NSString *)senderId {
return kJSQDemoAvatarIdCook;
}
@end
