iOS蓝牙传输数据演示-3

#import "ViewController.h"

#import "HMBluetoothManager.h"

@interface ViewController ()<UITableViewDataSource,UITableViewDelegate>
@property (weak, nonatomic) IBOutlet UITableView *tableView;


@end

//我的小米手环dentifier
#define kIdentifier @"60C955B2-8F7C-8784-665F-D05E520F5A12"

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];


    // Do any additional setup after loading the view, typically from a nib.
}

#pragma mark -扫描按钮
- (IBAction)scanButtonClick:(id)sender {

    kHMBluetoothManager.UUID = @"2A06";
        //1.开始扫描
        [kHMBluetoothManager BeginScanPeripheral:^(CBPeripheral *peripheral) {
            //刷新tableview
            [self.tableView reloadData];


        }];
}

#pragma mark -tableviewdelegate

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

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell" forIndexPath:indexPath];

    CBPeripheral *peripheral = kHMBluetoothManager.scanArr[indexPath.row];

    cell.textLabel.text = [peripheral.identifier UUIDString];

    cell.detailTextLabel.text = peripheral.name;

    return cell;
}

//点击cell连接设备
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    //获取点击的外设
    CBPeripheral *peripheral = kHMBluetoothManager.scanArr[indexPath.row];

    //判断是否是我的小米手环（专门为了测试买的），因为蓝牙会扫描到周边很多外设，我们通过唯一标识符来判断自己的外设
    if ([[peripheral.identifier UUIDString] isEqualToString:kIdentifier]) {

        //3.连接设备
        [kHMBluetoothManager connectPeripheral:peripheral Completion:^(CBPeripheral *peripheral, NSString *connectState) {
            NSLog(@"%@",connectState);
            //4.发送数据
            //实际开发中，扫描特征会有一定的延迟，我们可以通过回调或者通知来获取发现特征的回调，这里为了快速演示，我就设置了3s的延迟
            dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(3 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
                Byte *byte[1];
                byte[0]= 02 & 0xff;
                NSData *data = [NSData dataWithBytes:byte length:1];
                [kHMBluetoothManager writeValue:data toPeripheral:kHMBluetoothManager.currentPeripheral characteristic:kHMBluetoothManager.currentCharacteristic];
            });

        }];
    }
    else
    {
        NSLog(@"这不是你的小米手环");
    }
}


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


@end