iOS开发 蓝牙连接
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这里只需要.m文件,只做了连接蓝牙和扫描蓝牙数据
直接上代码:
//
// FirstViewController.m
// test
//
// Created by HandsomeC on 2017/11/30.
// Copyright © 2017年 赵发生. All rights reserved.
//
#import "FirstViewController.h"
#import "SecondViewController.h"
#import <CoreBluetooth/CoreBluetooth.h>
#import "YZC_AlertView.h"
#define IS_IOS_10 (([[[[UIDevice currentDevice].systemVersion componentsSeparatedByString:@"."] objectAtIndex:0] intValue] >=10) ? YES : NO)
@interface FirstViewController ()<CBCentralManagerDelegate,CBPeripheralDelegate>
@property (nonatomic,strong) CBCentralManager *blueManager;//系统的蓝牙,用它扫描设备和链接设备
@property (nonatomic,strong) NSMutableArray *saveDiscountyBlueArr;//保存扫描到的蓝牙设备
@property (nonatomic,strong) CBPeripheral *choicePer;
@end
@implementation FirstViewController
- (NSMutableArray *)saveDiscountyBlueArr{
if (_saveDiscountyBlueArr ==nil) {
_saveDiscountyBlueArr = [[NSMutableArrayalloc] init];
}
return_saveDiscountyBlueArr;
}
- (void)viewDidLoad {
[superviewDidLoad];
self.tableView = [[UITableViewalloc] initWithFrame:CGRectMake(0,64, self.view.frame.size.width,self.view.frame.size.height-64)style:UITableViewStylePlain];
self.tableView.dataSource =self;
self.tableView.delegate =self;
self.tableView.rowHeight =50;
[self.tableViewregisterClass:[UITableViewCellclass] forCellReuseIdentifier:@"cell"];
//实例化类并设置为主线程
_blueManager = [[CBCentralManageralloc]initWithDelegate:selfqueue:dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0) options:nil];
}
#pragma mark 第一步 判断蓝牙是否可用
//扫描外部设备代理方法实现
- (void)centralManagerDidUpdateState:(CBCentralManager *)central{
switch (central.state) {
//注意,这里手机系统如果是iOS10以上不能用CBCentralManagerStateUnknown,要用CBManagerStateUnknown,因为在iOS10被弃用了
caseCBCentralManagerStateUnknown:
[YZC_AlertViewshowViewWithTitleMessage:@"设备不支持"];
break;
caseCBCentralManagerStateResetting:
[YZC_AlertViewshowViewWithTitleMessage:@"正在重置设备"];
break;
caseCBCentralManagerStateUnsupported:
[YZC_AlertViewshowViewWithTitleMessage:@"设备不支持状态"];
break;
caseCBCentralManagerStateUnauthorized:
[YZC_AlertViewshowViewWithTitleMessage:@"设备未授权状态"];
break;
caseCBCentralManagerStatePoweredOff:
[YZC_AlertViewshowViewWithTitleMessage:@"设备关闭状态"];
break;
caseCBCentralManagerStatePoweredOn:
NSLog(@">>>CBCentralManagerStatePoweredOn");
//开始扫描周围的外设
/*
第一个参数nil就是扫描周围所有的外设,扫描到外设后会进入
- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI;
*/
[_blueManagerscanForPeripheralsWithServices:niloptions:@{CBCentralManagerRestoredStateScanOptionsKey:@(YES)}];
break;
default:
break;
}
}
#pragma mark 第二步 扫描可连接设备
//扫描到设备后进入的方法
- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary<NSString *,id> *)advertisementData RSSI:(NSNumber *)RSSI{
//如果没有设备,可以下载一个app,lightBlue作为调试
//这里面扫描到后可以进行连接
NSLog(@"扫描到蓝牙设备:%@",peripheral.name);
if (peripheral && peripheral.name.length) {
[self.saveDiscountyBlueArraddObject:peripheral];
[self.tableViewreloadData];
}
}
#pragma mark 第三步 点击对应的设备进行连接
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
CBPeripheral *per =self.saveDiscountyBlueArr[indexPath.row];
//连接设备,一个主设备最多能连接7个外设,每个外设只能给一个主设备连接
self.choicePer = per;
[_blueManagerconnectPeripheral:per options:nil];
}
#pragma mark 第四步 连接设备成功后扫码service
//连接到Peripherals-成功
- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral
{
[YZC_AlertViewshowTitle:nilMsg:[NSStringstringWithFormat:@"连接到名称为(%@)的设备-成功",peripheral.name]];
//连接成功后可以扫描服务数据
//设置代理
[peripheral setDelegate:self];
[peripheral discoverServices:nil];
//扫描外设的服务成功后会进入下面方法
}
#pragma mark 第五步 扫描service成功后扫码Characteristics
//扫描外设servis成功后可以获取设备的services
- (void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error{
NSLog(@">>>扫描到服务:%@",peripheral.services);
if (error)
{
NSLog(@">>>扫描出错 %@ 出错原因: %@", peripheral.name, [errorlocalizedDescription]);
return;
}
for (CBService *servicein peripheral.services) {
NSLog(@"%@",service.UUID);
//扫描每个service的Characteristics,扫描到后会进入方法: -(void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error
[peripheral discoverCharacteristics:nilforService:service];
}
}
#pragma mark 第六步 获取外设的Characteristics,获取Characteristics的值,获取Characteristics的Descriptor和Descriptor的值
//扫描到Characteristics
-(void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error{
if (error)
{
NSLog(@"Characteristics扫码出错 %@ 原因: %@", service.UUID, [errorlocalizedDescription]);
return;
}
for (CBCharacteristic *characteristicin service.characteristics)
{
NSLog(@"service:%@ 的 Characteristic: %@",service.UUID,characteristic.UUID);
}
//获取Characteristic的值,读到数据会进入方法:-(void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
for (CBCharacteristic *characteristicin service.characteristics){
{
[peripheral readValueForCharacteristic:characteristic];
}
}
//搜索Characteristic的Descriptors,读到数据会进入方法:-(void)peripheral:(CBPeripheral *)peripheral didDiscoverDescriptorsForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
for (CBCharacteristic *characteristicin service.characteristics){
[peripheral discoverDescriptorsForCharacteristic:characteristic];
}
}
#pragma mark 第七步 获取的charateristic的值
//获取的charateristic的值
-(void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error{
//打印出characteristic的UUID和值
//!注意,value的类型是NSData,具体开发时,会根据外设协议制定的方式去解析数据
NSLog(@"获取的charateristic的值 characteristic uuid:%@ value:%@",characteristic.UUID,characteristic.value);
}
#pragma mark 第八 步 搜索到Characteristic的Descriptors
//搜索到Characteristic的Descriptors
-(void)peripheral:(CBPeripheral *)peripheral didDiscoverDescriptorsForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error{
//打印出Characteristic和他的Descriptors
NSLog(@"characteristic uuid:%@",characteristic.UUID);
for (CBDescriptor *din characteristic.descriptors) {
NSLog(@"搜索到Characteristic的Descriptors Descriptor uuid:%@",d.UUID);
}
}
//获取到Descriptors的值
-(void)peripheral:(CBPeripheral *)peripheral didUpdateValueForDescriptor:(CBDescriptor *)descriptor error:(NSError *)error{
//打印出DescriptorsUUID 和value
//这个descriptor都是对于characteristic的描述,一般都是字符串,所以这里我们转换成字符串去解析
NSLog(@" 获取到Descriptors的值 characteristic uuid:%@ value:%@",[NSStringstringWithFormat:@"%@",descriptor.UUID],descriptor.value);
}
#pragma mark 第九步 把数据写到Characteristic中
//写数据
-(void)writeCharacteristic:(CBPeripheral *)peripheral
characteristic:(CBCharacteristic *)characteristic
value:(NSData *)value{
//打印出 characteristic 的权限,可以看到有很多种,这是一个NS_OPTIONS,就是可以同时用于好几个值,常见的有read,write,notify,indicate,知知道这几个基本就够用了,前连个是读写权限,后两个都是通知,两种不同的通知方式。
/*
typedef NS_OPTIONS(NSUInteger, CBCharacteristicProperties) {
CBCharacteristicPropertyBroadcast = 0x01,
CBCharacteristicPropertyRead = 0x02,
CBCharacteristicPropertyWriteWithoutResponse = 0x04,
CBCharacteristicPropertyWrite = 0x08,
CBCharacteristicPropertyNotify = 0x10,
CBCharacteristicPropertyIndicate = 0x20,
CBCharacteristicPropertyAuthenticatedSignedWrites = 0x40,
CBCharacteristicPropertyExtendedProperties = 0x80,
CBCharacteristicPropertyNotifyEncryptionRequired NS_ENUM_AVAILABLE(NA, 6_0) = 0x100,
CBCharacteristicPropertyIndicateEncryptionRequired NS_ENUM_AVAILABLE(NA, 6_0) = 0x200
};
*/
NSLog(@"%lu", (unsignedlong)characteristic.properties);
//只有 characteristic.properties 有write的权限才可以写
if(characteristic.properties &CBCharacteristicPropertyWrite){
/*
最好一个type参数可以为CBCharacteristicWriteWithResponse或type:CBCharacteristicWriteWithResponse,区别是是否会有反馈
*/
[peripheral writeValue:value forCharacteristic:characteristictype:CBCharacteristicWriteWithResponse];
}else{
NSLog(@"该字段不可写!");
}
}
//连接到Peripherals-失败
-(void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error
{
[YZC_AlertViewshowViewWithTitleMessage:[NSStringstringWithFormat:@"连接到名称为(%@)的设备-失败,原因:%@",[peripheral name],[errorlocalizedDescription]]];
}
//Peripherals断开连接
- (void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error{
[YZC_AlertViewshowViewWithTitleMessage:[NSStringstringWithFormat:@">>>外设连接断开连接 %@: %@\n", [peripheral name], [errorlocalizedDescription]]];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
returnself.saveDiscountyBlueArr.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
UITableViewCell *cell = [tableViewdequeueReusableCellWithIdentifier:@"cell"];
CBPeripheral *per =self.saveDiscountyBlueArr[indexPath.row];
cell.textLabel.text = per.name;
cell.textLabel.textColor = [UIColorblackColor];
return cell;
}
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