HarmonyOS 蓝牙连接成功后 获取gattServices为空数组？

Question

// 获取server的services信息
this.mGattClientDevice.getServices((code, gattServices) => {
  let message = '';
  if (code != null) {
    console.error('GattClient getServices error, errCode: ' + (code as BusinessError).code + ', errMessage: ' + (code as BusinessError).message);
  } else {
    console.info('gattServices.length =',gattServices.length)
    for (let i = 0; i < gattServices.length; i++) {
      message += 'serviceUuid is ' + gattServices[i].serviceUuid + '\n';
      if (gattServices[i].isPrimary) {
        this.readCharacteristicValue(gattServices[i]);
        this.readDescriptorValue(gattServices[i]);
        this.write(gattServices[i])
      }
    }
    console.info('GattClient getServices success, ' + message);
  }
})

Answer 1

在readAndWrite函数里面，先getServices成功后，再setBLEMtuSize尝试下