iOS基础1-蓝牙

版权声明：Coder Bruce https://blog.csdn.net/bruceyou1990/article/details/80002068

1. 最近做了几个蓝牙项目,写一下过程,方便大家.

本文章介绍手机为中央设备的情形

第一步 遵循代理

@interface DBBLEManager ()<CBCentralManagerDelegate,CBPeripheralDelegate>

第二步 设置蓝牙属性

@property (nonatomic ,strong)CBCentralManager *myCentralManager;

第三步 实例化

_myCentralManager = [[CBCentralManager alloc]initWithDelegate:self queue:nil options:nil];

第四步 实现代理方法

- (void)centralManagerDidUpdateState:(CBCentralManager *)central
{
    if (central.state == CBCentralManagerStatePoweredOn) {
        NSLog(@"蓝牙已打开");
        NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber  numberWithBool:YES], CBCentralManagerScanOptionAllowDuplicatesKey, nil];
        扫描
        [_myCentralManager scanForPeripheralsWithServices:nil options:options];
    }else {
        NSLog(@"蓝牙已关闭");
        NSURL  *url=[NSURL URLWithString:@"prefs:root=Bluetooth"];
        [[UIApplication sharedApplication]openURL:url];
        [DBTIPview ProgressHUD:@"设置-蓝牙-打开蓝牙"];
    }
}

第五步 代理返回蓝牙外设 连接

- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI
{
              [_myCentralManager connectPeripheral:peripheral options:nil];
}

第六步

 连接上蓝牙
- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral
{
       [_myCentralManager stopScan];    
}
//连接失败
- (void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral *)peripheral error:(nullable NSError *)error{
}

//失去连接
-(void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error{

}

接下来会开放一个 蓝牙的简单封装