iOS低功耗蓝牙4.0开发
//
// BlueTooth.h
// BleDemo
//
// Created by 张高强 on 2017/11/7.
// Copyright © 2017年 liuyanwei. All rights reserved.
//
#import
#import
/**
枚举定义蓝牙所有指令状态
*/
typedef NS_ENUM(NSUInteger,CommandState){
CommandStateOpen = 0,//打开蓝牙
CommandStateClose, //关闭蓝牙
CommandStateQuery //查询蓝牙状态
};
typedef NS_ENUM(NSUInteger,PhoneBluetoothState){
PhoneBluetoothStateOpen=0,//手机蓝牙状态打开
PhoneBluetoothStateClose //手机蓝牙关闭
};
@protocol BlueToothDelegate<NSObject>
@optional
//点击开始连接蓝牙按钮
-(void)didClickStart;
//连接成功
- (void)BLEConnectSucceed;
//收到的数据
- (void)receivedValue:(NSString *)data;
//打开蓝牙提示
-(void)openBluetooth;
//连接蓝牙失败
-(void)connectFail;
@end
@interface BlueTooth : NSObject<CBPeripheralDelegate,CBCentralManagerDelegate>{
NSInteger index;
}
//代理
@property (nonatomic, weak) id<BlueToothDelegate> delegate;
//中心
@property (nonatomic,strong) CBCentralManager *centralManager;
//外设
@property (nonatomic,strong) CBPeripheral *peripheral;
@property(nonatomic,strong)CBCharacteristic *notifyCharteristic;
//特征
@property (nonatomic, strong) CBCharacteristic *characteristic;
@property(nonatomic,strong)CBCentralManager *central;//中心设备管理
@property(nonatomic,copy)NSString *peripheralName;//传入的需要连接的外设
@property(nonatomic,assign)CommandState command;//外设具体指令状态
@property(nonatomic,assign)PhoneBluetoothState phoneState;
@property(nonatomic,assign)BOOL connectFlag;//判断是否连接中
//初始化
+ (instancetype)sharedInstance;
//开始连接
- (void)startConnect;
//断开连接
- (void)endConnect;
-(void)open;
-(void)close;
-(void)query;
以上是.h问价中定义的方法和回调方法
下面是.m文件中的方法
//
// BlueTooth.m
// BleDemo
//
// Created by 张高强 on 2017/11/7.
// Copyright © 2017年 liuyanwei. All rights reserved.
//
#import "BlueTooth.h"
@implementation BlueTooth
#define kServiceUUID @"0003CDD0-0000-1000-8000-00805F9B0131" //服务的UUID
#define kWriteCharacteristicUUID @"0003CDD2-0000-1000-8000-00805F9B0131" //特征的UUID
#define kNotifyCharacteristicUUID @"0003CDD1-0000-1000-8000-00805F9B0131" //特征的UUID
static id _instance;
/**
创建单例对象
@return 返回唯一实例
*/
+(instancetype)sharedInstance{
@synchronized(self){
if(_instance == nil){
_instance = [[self alloc] init];
}
}
return _instance;
}
/**
开始连接蓝牙
*/
-(void)startConnect{
if (self.delegate && [self.delegate respondsToSelector:@selector(didClickStart)])
{
//控制器更新UI
[self.delegate didClickStart];
}
self.connectFlag =NO;
//初始化中心端,开始蓝牙模块
self.centralManager = [[CBCentralManager alloc] initWithDelegate:self queue:nil options:nil];
self.centralManager.delegate = self;
}
//断开连接
- (void)endConnect
{
self.connectFlag=NO;
[self.centralManager cancelPeripheralConnection:self.peripheral];
_centralManager=nil;
}
#pragma mark - CBCentralManagerDelegate
-(void)connectDeviceFailer{
if ([self.delegate respondsToSelector:@selector(connectFail)]) {
[self.delegate connectFail];
}
}
// 状态更新后触发
-(void)centralManagerDidUpdateState:(CBCentralManager *)central
{
switch (central.state) {
case CBManagerStatePoweredOff:{
NSLog(@"蓝牙关闭");
self.phoneState = PhoneBluetoothStateClose;
//检测到蓝牙没打开需要通知代理控制器去执行相关提示操作
if (self.delegate && [self.delegate respondsToSelector:@selector(openBluetooth)])
{
[self.delegate openBluetooth];
};
}
break;
case CBManagerStatePoweredOn:{
[self performSelector:@selector(connectDeviceFailer) withObject:self afterDelay:2.0];
self.phoneState = PhoneBluetoothStateOpen;
//检测到蓝牙没打开需要通知代理控制器去执行相关提示操作
if (self.delegate && [self.delegate respondsToSelector:@selector(openBluetooth)])
{
[self.delegate openBluetooth];
};
}
break;
case CBManagerStateResetting:
break;
case CBManagerStateUnauthorized:
break;
case CBManagerStateUnknown:
break;
case CBManagerStateUnsupported:
break;
default:
break;
}
[central scanForPeripheralsWithServices:nil options:nil];
}
// 扫描到外部设备后触发的代理方法//多次调用的
- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(nonnull CBPeripheral *)peripheral advertisementData:(nonnull NSDictionary<NSString *,id> *)advertisementData RSSI:(nonnull NSNumber *)RSSI
{
NSString *msg = [NSString stringWithFormat:@"信号强度: %@, 外设: %@", RSSI, peripheral];
NSLog(@"%@",msg);
//ZIH0491300//
// NSLog(@"此时外设名字是%@",_peripheralName);
// NSAssert(![_peripheralName isEqualToString:@""]||_peripheralName==nil, @"please init correct peripheralName");断言
if ([peripheral.name isEqualToString:_peripheralName])
{
//连接外部设备
self.peripheral = peripheral;
[central connectPeripheral:peripheral options:nil];
//停止搜索
self.central=central;
[central stopScan];
}else{
}
}
//连接失败
- (void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error
{
NSLog(@"连接失败%@",error.localizedDescription);
if ([self.delegate respondsToSelector:@selector(connectFail)]) {
[self.delegate connectFail];
}
}
// 当中心端连接上外设时触发
- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral
{
NSLog(@"连接上外设");
self.connectFlag=YES;
[NSObject cancelPreviousPerformRequestsWithTarget:self];
[central stopScan];
if ([self.delegate respondsToSelector:@selector(BLEConnectSucceed)]) {
[self.delegate BLEConnectSucceed];
}
self.peripheral.delegate = self;
[peripheral discoverServices:nil];
}
//如果连接上的两个设备突然断开了，程序里面会自动回调下面的方法
- (void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error
{
[self.central connectPeripheral:peripheral options:nil];
NSLog(@"已经断开蓝牙连接");
}
#pragma mark - CBPeripheralDelegate
// 外设端发现了服务时触发
- (void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error
{
if (error)
{
NSLog(@"%@",error.localizedDescription);
return;
}
for (CBService *service in peripheral.services)
{
if ([service.UUID.UUIDString isEqualToString:kServiceUUID]) {
[peripheral discoverCharacteristics:nil forService:service];
}
}
}
//从服务获取特征
-(void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error
{
NSLog(@"%@",service.characteristics);
for (CBCharacteristic *characteristic in service.characteristics)
{
if ([characteristic.UUID.UUIDString isEqualToString:kWriteCharacteristicUUID] ) {
self.characteristic = characteristic;
}
if ([characteristic.UUID.UUIDString isEqualToString:kNotifyCharacteristicUUID]) {
self.notifyCharteristic=characteristic;
}
}
}
#pragma mark 写数据后回调
- (void)peripheral:(CBPeripheral *)peripheral didWriteValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error {
if (error) {
NSLog(@"Error writing characteristic value: %@",
[error localizedDescription]);
return;
}
NSLog(@"写入%@成功",characteristic);
}
-(void)query{
[self.peripheral setNotifyValue:YES forCharacteristic:self.notifyCharteristic];
}
/**
打开蓝牙
*/
-(void)open{
NSData *data = [@"&1&1&1&1" dataUsingEncoding:NSUTF8StringEncoding];
[self.peripheral writeValue:data forCharacteristic:self.characteristic type:0x04];
[self.peripheral setNotifyValue:YES forCharacteristic:self.notifyCharteristic];
}
/**
关闭蓝牙
*/
-(void)close{
NSData *data = [@"&&&2&" dataUsingEncoding:NSUTF8StringEncoding];
[self.peripheral writeValue:data forCharacteristic:self.characteristic type:0x04];
[self.peripheral setNotifyValue:YES forCharacteristic:self.notifyCharteristic];
}
//将十六进制的字符串转换成NSString则可使用如下方式:
+ (NSString *)convertHexStrToString:(NSString *)str {
if (!str || [str length] == 0) {
return nil;
}
NSMutableData *hexData = [[NSMutableData alloc] initWithCapacity:8];
NSRange range;
if ([str length] % 2 == 0) {
range = NSMakeRange(0, 2);
} else {
range = NSMakeRange(0, 1);
}
for (NSInteger i = range.location; i < [str length]; i += 2) {
unsigned int anInt;
NSString *hexCharStr = [str substringWithRange:range];
NSScanner *scanner = [[NSScanner alloc] initWithString:hexCharStr];
[scanner scanHexInt:&anInt];
NSData *entity = [[NSData alloc] initWithBytes:&anInt length:1];
[hexData appendData:entity];
range.location += range.length;
range.length = 2;
}
NSString *string = [[NSString alloc]initWithData:hexData encoding:NSUTF8StringEncoding];
return string;
}
//收到数据,并且通知代理接受数据，并实现相关功能
- (void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
{
NSString *results=[[NSString alloc] initWithData:characteristic.value encoding:NSUTF8StringEncoding];
if ([self.delegate respondsToSelector:@selector(receivedValue:)]) {
[self.delegate receivedValue:results];
}
}
如果有兴趣可以去https://github.com/zhanggaoqiang/GQBluetooth下载源文件阅读
正文到此结束
热门推荐
相关文章
Loading...
![[HBLOG]公众号](http://www.liuhaihua.cn/img/qrcode_gzh.jpg)
