Android蓝牙低能耗配对

3 回答

• 1

  当您收到GATT_INSUFFICIENT_AUTHENTICATION错误时，系统会为您启动绑定过程 . 在下面的例子中，我试图在葡萄糖监测器上启用通知和指示 . 首先，我启用葡萄糖测量特征的通知，这可能导致错误出现 .

  @Override
      public void onDescriptorWrite(BluetoothGatt gatt, BluetoothGattDescriptor descriptor, int status) {
          if (status == BluetoothGatt.GATT_SUCCESS) {
              if (GM_CHARACTERISTIC.equals(descriptor.getCharacteristic().getUuid())) {
                  mCallbacks.onGlucoseMeasurementNotificationEnabled();
  
                  if (mGlucoseMeasurementContextCharacteristic != null) {
                      enableGlucoseMeasurementContextNotification(gatt);
                  } else {
                      enableRecordAccessControlPointIndication(gatt);
                  }
              }
  
              if (GM_CONTEXT_CHARACTERISTIC.equals(descriptor.getCharacteristic().getUuid())) {
                  mCallbacks.onGlucoseMeasurementContextNotificationEnabled();
                  enableRecordAccessControlPointIndication(gatt);
              }
  
              if (RACP_CHARACTERISTIC.equals(descriptor.getCharacteristic().getUuid())) {
                  mCallbacks.onRecordAccessControlPointIndicationsEnabled();
              }
          } else if (status == BluetoothGatt.GATT_INSUFFICIENT_AUTHENTICATION) {
              // this is where the tricky part comes
  
              if (gatt.getDevice().getBondState() == BluetoothDevice.BOND_NONE) {
                  mCallbacks.onBondingRequired();
  
                  // I'm starting the Broadcast Receiver that will listen for bonding process changes
  
                  final IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_BOND_STATE_CHANGED);
                  mContext.registerReceiver(mBondingBroadcastReceiver, filter);
              } else {
                  // this situation happens when you try to connect for the second time to already bonded device
                  // it should never happen, in my opinion
                  Logger.e(TAG, "The phone is trying to read from paired device without encryption. Android Bug?");
                  // I don't know what to do here
                  // This error was found on Nexus 7 with KRT16S build of Andorid 4.4. It does not appear on Samsung S4 with Andorid 4.3.
              }
          } else {
              mCallbacks.onError(ERROR_WRITE_DESCRIPTOR, status);
          }
      };
  

  mBondingBroadcastReceiver的位置是：

  private BroadcastReceiver mBondingBroadcastReceiver = new BroadcastReceiver() {
      @Override
      public void onReceive(final Context context, final Intent intent) {
          final BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
          final int bondState = intent.getIntExtra(BluetoothDevice.EXTRA_BOND_STATE, -1);
          final int previousBondState = intent.getIntExtra(BluetoothDevice.EXTRA_PREVIOUS_BOND_STATE, -1);
  
          Logger.d(TAG, "Bond state changed for: " + device.getAddress() + " new state: " + bondState + " previous: " + previousBondState);
  
          // skip other devices
          if (!device.getAddress().equals(mBluetoothGatt.getDevice().getAddress()))
              return;
  
          if (bondState == BluetoothDevice.BOND_BONDED) {
              // Continue to do what you've started before
              enableGlucoseMeasurementNotification(mBluetoothGatt);
  
              mContext.unregisterReceiver(this);
              mCallbacks.onBonded();
          }
      }
  };
  

  请记住在退出活动时取消注册广播接收器 . 它可能没有被接收者本身注册 .

  回复于 2024-04-29T05:02:39+08:00
• 0

  我认为新的android 4.4提供了配对方法 . 同样的问题我已经面临所以等待更新和希望解决问题解决createBond（）方法 .

  http://developer.android.com/reference/android/bluetooth/BluetoothDevice.html#setPairingConfirmation%28boolean%29

  回复于 2024-04-29T05:02:39+08:00
• 24

  您可能需要检查内核smp.c文件，哪种方法可以调用它来进行配对 . 1）密钥2）正常工作等 . 我想如果它能够调用MIMT和密钥安全级别，就不会有任何身份验证问题 . 确保将所有标志设置为调用SMP密钥方法 . 通过在smp.c文件中放置一些打印来跟踪 .

  在ICS中运行的解决方案：在android中使用btmgmt工具并将其挂钩在加密API中 . 使用密钥或任何其他方法 . 有用 . 您可能需要从最新的bluez代码中添加btmgmt中的密钥API .

  回复于 2024-04-29T05:02:39+08:00