Question

我正在编写一个涉及蓝牙低能量扫描的应用程序，我正面临一个奇怪的错误。 BLE扫描适用于大多数设备，但只要打开范围内的某个温度传感器，蓝牙就会在我的设备（Kindle Fire）上崩溃并关闭。扫描然后完全停止工作，直到我可以重新打开蓝牙。温度传感器未在ListView中显示已添加扫描设备，因此我不确定在崩溃之前是否发生了传感器的ScanCallback。有谁知道这个问题的可能原因？

这是我的ScanLeDevice（）方法和ScanCallback：

    private void scanLeDevice(final boolean enable) {
    if (enable) {
        scanning = true;
        scanner.startScan(filterList, settings, mLeScanCallback);
        scanPost();
        mHandler.postDelayed(new Runnable() {
            @Override
            public void run() {
                //Stop scanning after 10 seconds
                scanLeDevice(false);
            }
        }, SCAN_PERIOD);
    } else {
        scanning = false;
        scanner.stopScan(mLeScanCallback);
        mHandler.removeCallbacksAndMessages(null);
//            mBluetoothAdapter.stopLeScan(mLeScanCallback);
        this.stopScan();
    }
}



private ScanCallback mLeScanCallback =
        new ScanCallback() {
            @Override
            public void onScanResult(int callbackType, ScanResult result) {
                final int new_rssi = result.getRssi();
                final BluetoothDevice new_device = result.getDevice();
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        // add to view
                        //TODO: add in check in UUIDs to make sure only temperature sensors are added

                        if (new_rssi > -90) {
                            adapter.addDevice(new_device, new_rssi);
                            adapter.notifyDataSetChanged();
                        }
                    }
                });
            }
        };

以下是logcat的发现：

E/BTLD:##################################################################
E/BTLD: #
E/BTLD: # WARNING : BTU HCI(id=0) command timeout. opcode=0x2006
E/BTLD: #
E/BTLD:##################################################################
E/bt-hci: Num consecutive HCI Cmd tout =2 Restarting BT process
E/bt-btm: cannot interpret APCF callback status = 0, length = 1
E/BTLD: ##################################################################
E/BTLD: #
E/BTLD: # WARNING : BTU HCI(id=0) command timeout. opcode=0x2006
E/BTLD: #
E/BTLD: ##################################################################
E/bt-hci: Num consecutive HCI Cmd tout =2 Restarting BT process
E/BT_UTILS: bt_utils_set_pts_flag, pts_enable 0
E/bt_osi_config: config_new unable to open file '/etc/bluetooth/ble_stack.conf': No such file or directory
E/BT_UTILS: bt_utils_set_pts_flag, pts_enable 0
E/bt_osi_config: config_new unable to open file '/etc/bluetooth/ble_stack.conf': No such file or directory
E/[BT]: init_uart: Can't open serial port
E/bt_userial: userial_open unable to open serial port.
E/bt_userial: userial_write error writing to serial port: Bad file number 9
E/bt-btif: ...preload_wait_timeout (retried:0/max-retry:0)...
E/[BT]: thread_exit: pthread_mutex_unlock error
E/WifiStateMachine: sending event=NETWORK_STATE_CHANGED_ACTION, info=[state: CONNECTING/OBTAINING_IPADDR, reason: null, isAvailable: true]
E/BT_UTILS: bt_utils_set_pts_flag, pts_enable 0
E/bt_osi_config: config_new unable to open file 
'/etc/bluetooth/ble_stack.conf': No such file or directory
E/bt-btm: BTM_SecRegister:p_cb_info->p_le_callback == 0xa3943529 
E/bt-btm: BTM_SecRegister: btm_cb.api.p_le_callback = 0xa3943529 
E/bt-btif: Calling BTA_HhEnable
E/bt-btif: btif_storage_get_adapter_property service_mask:0x2100028
E/bt-btif: btif_hf_upstreams_evt: Invalid index 8223
E/bt_h4: vendor lib postload completed

打开某个设备后蓝牙崩溃

0 个答案: