CoreBlueTootch的实现

storyBoard里拖tableView、tableViewCell。记得拖代理

大致思路：注册中心管理设备—》判断蓝牙是否开启——>扫描—》扫描发现设备—》加到数组里，刷新—》点击cell、连接结束扫描—》连接上外设、连接出错、断开连接三个方法。

#import "ViewController.h"
#import <CoreBluetooth/CoreBluetooth.h>
#import <CoreLocation/CoreLocation.h>

@interface ViewController ()<CBCentralManagerDelegate,UITableViewDataSource,
UITableViewDelegate>
//展示外设
@property (weak,
nonatomic) IBOutlet
UITableView *tableView;

//中央设备管理者
@property (nonatomic,
strong)CBCentralManager *mgr;
//用于添加扫描到的外设
@property (nonatomic,
strong)NSMutableArray *dataArr;

@end

@implementation ViewController

- (void)viewDidLoad {
    
    
    [super
viewDidLoad];
    //判断中央设备蓝牙状态
    
    //tableview注册
    [self.tableView
registerClass:[UITableViewCell
class] forCellReuseIdentifier:@"Cell"];
    self.mgr = [[CBCentralManager
alloc] initWithDelegate:self
queue:nil];
//    NSLog(@"%@", self.mgr);
    
    // Do any additional setup after loading the view, typically from a nib.
}

// 扫描外设
- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral
*)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI
{
    //将外设对象加到容器里
    [self.dataArr
addObject:peripheral];
    [self.tableView
reloadData];
    NSLog(@"%@", RSSI);
    NSLog(@"%@", advertisementData);
}

// 这个方法是必须执行的！！！！！！！！！！
- (void)centralManagerDidUpdateState:(CBCentralManager *)central
{
    NSLog(@"------%ld", central.state);
    // 判读是否是枚举。如果是，就开始扫描
    if ([self
panduan]) {
        [self.mgr
scanForPeripheralsWithServices:nil
options:nil];
    }
    
}

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return
1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return
_dataArr.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath
*)indexPath
{
    UITableViewCell *cell = [tableView
dequeueReusableCellWithIdentifier:@"Cell"
forIndexPath:indexPath];
    CBPeripheral *peripheral = (CBPeripheral *)self.dataArr[indexPath.row];
//    cell.textLabel.text = @"nnnnnn";
//    cell.textLabel.text = [NSString stringWithFormat:@"%@", peripheral.RSSI];
    
    return cell;
}

// 点击cell出发的方法
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    //链接蓝牙外设
    [self.mgr
connectPeripheral:((CBPeripheral *)self.dataArr[indexPath.row])
options:nil];
    //结束扫描
    [self.mgr
stopScan];
}

//链接上外设
- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral
*)peripheral
{
    NSLog(@"%s", __func__);
}

//链接出错
- (void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral
*)peripheral error:(NSError *)error
{
    NSLog(@"%s", __func__);
}

// 断开连接
- (void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral
*)peripheral error:(NSError *)error
{
    NSLog(@"%s", __func__);
}

//承载容器的懒加载
- (NSMutableArray *)dataArr
{
    if (!_dataArr) {
        _dataArr = [NSMutableArray
array];
    }
    return
_dataArr;
}

//判断蓝牙状态是否可用
- (BOOL)panduan
{
    NSLog(@"%@",
self.mgr);
    if (self.mgr.state ==
CBCentralManagerStatePoweredOn) {
        return
YES;
    }
    return
NO;
}

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

@end

#import "ViewController.h"
#import <CoreBluetooth/CoreBluetooth.h>
#import <CoreLocation/CoreLocation.h>

@interface ViewController ()<CBCentralManagerDelegate,UITableViewDataSource,
UITableViewDelegate>
//展示外设
@property (weak,
nonatomic) IBOutlet
UITableView *tableView;

//中央设备管理者
@property (nonatomic,
strong)CBCentralManager *mgr;
//用于添加扫描到的外设
@property (nonatomic,
strong)NSMutableArray *dataArr;

@end

@implementation ViewController

- (void)viewDidLoad {
    
    
    [super
viewDidLoad];
    //判断中央设备蓝牙状态
    
    //tableview注册
    [self.tableView
registerClass:[UITableViewCell
class] forCellReuseIdentifier:@"Cell"];
    self.mgr = [[CBCentralManager
alloc] initWithDelegate:self
queue:nil];
//    NSLog(@"%@", self.mgr);
    
    // Do any additional setup after loading the view, typically from a nib.
}

// 扫描外设
- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral
*)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI
{
    //将外设对象加到容器里
    [self.dataArr
addObject:peripheral];
    [self.tableView
reloadData];
    NSLog(@"%@", RSSI);
    NSLog(@"%@", advertisementData);
}

// 这个方法是必须执行的！！！！！！！！！！
- (void)centralManagerDidUpdateState:(CBCentralManager *)central
{
    NSLog(@"------%ld", central.state);
    // 判读是否是枚举。如果是，就开始扫描
    if ([self
panduan]) {
        [self.mgr
scanForPeripheralsWithServices:nil
options:nil];
    }
    
}

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return
1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return
_dataArr.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath
*)indexPath
{
    UITableViewCell *cell = [tableView
dequeueReusableCellWithIdentifier:@"Cell"
forIndexPath:indexPath];
    CBPeripheral *peripheral = (CBPeripheral *)self.dataArr[indexPath.row];
//    cell.textLabel.text = @"nnnnnn";
//    cell.textLabel.text = [NSString stringWithFormat:@"%@", peripheral.RSSI];
    
    return cell;
}

// 点击cell出发的方法
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    //链接蓝牙外设
    [self.mgr
connectPeripheral:((CBPeripheral *)self.dataArr[indexPath.row])
options:nil];
    //结束扫描
    [self.mgr
stopScan];
}

//链接上外设
- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral
*)peripheral
{
    NSLog(@"%s", __func__);
}

//链接出错
- (void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral
*)peripheral error:(NSError *)error
{
    NSLog(@"%s", __func__);
}

// 断开连接
- (void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral
*)peripheral error:(NSError *)error
{
    NSLog(@"%s", __func__);
}

//承载容器的懒加载
- (NSMutableArray *)dataArr
{
    if (!_dataArr) {
        _dataArr = [NSMutableArray
array];
    }
    return
_dataArr;
}

//判断蓝牙状态是否可用
- (BOOL)panduan
{
    NSLog(@"%@",
self.mgr);
    if (self.mgr.state ==
CBCentralManagerStatePoweredOn) {
        return
YES;
    }
    return
NO;
}

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

@end