IOS BLE 蓝牙实现方式

////  ViewController.m//  BleTemperatureDemo////  Created by jacob on 16/3/9.//  Copyright © 2016年 jacob. All rights reserved.//#import "ViewController.h"#import <CoreBluetooth/CoreBluetooth.h>//电池的service uuidstatic NSString *BATTERY_SERVICE = @"1xxx";//电池的特征值的UUIDstatic NSString *BATTERY_READ_CHAR = @"2Axx";//体温数据的service UUIDstatic NSString *HEALTH_SERVICE = @"1xxx";//体温特征值的UUIDstatic NSString *HEALTH_READ_CHAR = @"2xxx";@interface ViewController () <CBCentralManagerDelegate,CBPeripheralDelegate>@property (weak, nonatomic) IBOutlet UILabel *labelState;@property (weak, nonatomic) IBOutlet UILabel *labelTemperature;@property (weak, nonatomic) IBOutlet UILabel *labelBattery;@property(nonatomic,strong) CBCentralManager *bleManager;@property(nonatomic,strong) NSMutableArray *multArray;@property(nonatomic,strong) CBPeripheral *myPeripheral;- (IBAction)startScan:(UIButton *)sender;- (IBAction)stopScan:(UIButton *)sender;@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];     _bleManager = [[CBCentralManager alloc]initWithDelegate:self queue:nil];}- (void)centralManagerDidUpdateState:(CBCentralManager *)central{    NSLog(@"centralManagerDidUpdateState");    switch (central.state) {        case CBCentralManagerStatePoweredOff:            NSLog(@"蓝牙已关闭");            break;        case CBCentralManagerStatePoweredOn:            NSLog(@"蓝牙已打开");            break;        case CBCentralManagerStateUnsupported:            NSLog(@"不支持蓝牙");            break;                    default:            break;    }}-(void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary<NSString *,id> *)advertisementData RSSI:(NSNumber *)RSSI{    NSLog(@"peripheral--:%@",peripheral);    if ([peripheral.name containsString:@"Thermometer"]) {              self.labelState.text = @"已发现设备";        peripheral.delegate = self;        NSLog(@"开始连接设备");        self.myPeripheral = peripheral;        [self.bleManager connectPeripheral:self.myPeripheral options:nil];    }}/** *连接上设备的信息回调,连接上设备后，开始发现服务 */-(void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral{    NSLog(@"设备连接成功，准备扫描服务");      [peripheral discoverServices:nil];        self.labelState.text  = @"设备连接成功";}-(void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error{    self.labelState.text  = @"设备已经断开";    if (error) {        NSLog(@"didDisconnectPeripheral with error : %@",error);        return;    }}/** 扫描外设服务的数据回调 */-(void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error{        if (error) {        NSLog(@"didDiscoverServices with error : %@",error);        return;    }            for (CBService *service in peripheral.services) {        NSLog(@"service uuid: %@",service.UUID.UUIDString);        if ([service.UUID.UUIDString isEqualToString:BATTERY_SERVICE]) {            NSLog(@"已经发现电池对应的服务");            [peripheral discoverCharacteristics:nil forService:service];        }                if ([service.UUID.UUIDString isEqualToString:HEALTH_SERVICE]) {            NSLog(@"已经发现体温数据对应的服务");            [peripheral discoverCharacteristics:nil forService:service];        }    }}-(void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error{        NSLog(@"发现服务 %@, 特性数: %ld", service.UUID, [service.characteristics count]);    if (error) {        NSLog(@"didDiscoverCharacteristicsForService with error : %@",error);        return;    }        //电池电量的数据直接读对应的特征值即可    if ([service.UUID.UUIDString isEqualToString:BATTERY_SERVICE]) {          for (CBCharacteristic *character in service.characteristics) {              if ([character.UUID.UUIDString isEqualToString:BATTERY_READ_CHAR]) {                  NSLog(@"已找到電池对应服务中的 特征值");                  [peripheral readValueForCharacteristic:character];                          }          }    }            //体温数据需要通过notify的方式进行获取    if ([service.UUID.UUIDString isEqualToString:HEALTH_SERVICE]) {        for (CBCharacteristic *character in service.characteristics) {            if ([character.UUID.UUIDString isEqualToString:HEALTH_READ_CHAR]) {                NSLog(@"已找到体温对应服务中的 特征值");                [peripheral setNotifyValue:YES forCharacteristic:character];            }        }    }}/** read 或者 notify的方式都会在这个函数中返回数据 */-(void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error{    if (error) {        NSLog(@"didUpdateValueForCharacteristic with error : %@",error);        return;    }        NSData *data = characteristic.value;    NSLog(@"收到数据啦 %@---%@", data,characteristic.UUID);        //电量数据    if ([characteristic.UUID.UUIDString isEqualToString:BATTERY_READ_CHAR]) {        int battery;        [data getBytes: &battery length: sizeof(battery)];        self.labelBattery.text = [NSString stringWithFormat:@"%d",battery];    }                //体温数据    if ([characteristic.UUID.UUIDString isEqualToString:HEALTH_READ_CHAR]) {        Byte *testByte = (Byte *)[data bytes];        Byte orgin[4];        orgin[0] = testByte[1];        orgin[1] = testByte[2];        orgin[2] = testByte[3];                NSData *chidata=[NSData dataWithBytes:orgin length:4];        int code;        [chidata getBytes:&code length:4];        //NSInteger temp = [self byteToInt:orgin];        self.labelTemperature.text = [NSString stringWithFormat:@"%.2f",(0.1+0.01*code)];    }   }- (IBAction)startScan:(UIButton *)sender {    [self.bleManager scanForPeripheralsWithServices:nil options:@{CBCentralManagerScanOptionAllowDuplicatesKey:@(YES)}];     NSLog(@"开始扫描");    }- (IBAction)stopScan:(UIButton *)sender {    NSLog(@"停止扫描");    [self.bleManager stopScan ];    [self.bleManager cancelPeripheralConnection:self.myPeripheral];        self.labelBattery.text = @"";    self.labelState.text = @"";    self.labelTemperature.text = @"";}@end