未调用Android BLE服务onServiceDiscover（）

Question

Ble是广告，在BluetoothGattServer中添加广告数据，广告完成，设备连接。在连接之后，也调用discoverServices()，但是没有发现服务，即没有触发onserviceinstovered（）回调。

private void startAdvertising() {
    Log.d(TAG, "Service: Starting Advertising");

    if (mAdvertiseCallback == null) {
        AdvertiseSettings settings = buildAdvertiseSettings();
        AdvertiseData data = buildAdvertiseData();
        mAdvertiseCallback = new SampleAdvertiseCallback();

        if (mBluetoothLeAdvertiser != null) {
            mBluetoothLeAdvertiser.startAdvertising(settings, data, mAdvertiseCallback);
        }
    }
}

private void initServer() {
     BluetoothGattService service =
            new BluetoothGattService(Constants.Service_UUID,BluetoothGattService.SERVICE_TYPE_PRIMARY);

    BluetoothGattCharacteristic characteristic =
            new BluetoothGattCharacteristic(Constants.Char_UUID,
                    //Read + write characteristics and permission
                    BluetoothGattCharacteristic.PROPERTY_READ | BluetoothGattCharacteristic.PROPERTY_WRITE,
                    BluetoothGattCharacteristic.PERMISSION_READ | BluetoothGattCharacteristic.PERMISSION_WRITE);

    service.addCharacteristic(characteristic);
    mBluetoothGattServer.addService(service);
}

//回调以处理所有Gatt客户端连接以处理读写请求

private BluetoothGattServerCallback mBGattServerCallback = new BluetoothGattServerCallback() {
    @Override
    public void onConnectionStateChange(BluetoothDevice device, int status, int newState) {
        super.onConnectionStateChange(device, status, newState);
        Log.d(TAG ,"OnConnection state change");
        if(newState == BluetoothProfile.STATE_CONNECTED){

        }else  if(newState == BluetoothProfile.STATE_DISCONNECTED){

        }

    }

    @Override
    public void onServiceAdded(int status, BluetoothGattService service) {
        super.onServiceAdded(status, service);
        Log.i(TAG, " Service are added");
    }

//广告数据

private AdvertiseData buildAdvertiseData() {

advertedata data=new advertedata.builder（）.setIncludedEviceName（true）.addServiceUUID（new ParcelUuid（constants.service_uuid)).build（）；}

private AdvertiseSettings buildAdvertiseSettings() {
    AdvertiseSettings settings = new AdvertiseSettings.Builder()
            .setAdvertiseMode(AdvertiseSettings.ADVERTISE_MODE_BALANCED)
            .setConnectable(true)
            .setTimeout(0)
            .setTxPowerLevel(AdvertiseSettings.ADVERTISE_TX_POWER_MEDIUM)
            .build();
    return settings;

private void initialize() {
    if (mBluetoothLeAdvertiser == null) {
        BluetoothManager mBluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
        if (mBluetoothManager != null) {
            BluetoothAdapter mBluetoothAdapter = mBluetoothManager.getAdapter();
            if (mBluetoothAdapter != null) {
                mBluetoothLeAdvertiser = mBluetoothAdapter.getBluetoothLeAdvertiser();
                //register the instance of server to BLE framework
                mBluetoothGattServer = mBluetoothManager.openGattServer(this,mBGattServerCallback);
                initServer();
            } else {
                Toast.makeText(this, getString(R.string.bt_null), Toast.LENGTH_LONG).show();
            }
        } else {
            Toast.makeText(this, getString(R.string.bt_null), Toast.LENGTH_LONG).show();
        }
    }
}

//日志总结

`//服务uuid和特性uuid将进入广告数据{onGetService（）-device=65:5E:34:E1:47:55 uuid=0000xxxx-0000-1000-8000-00805xxx10-31 17:55:11.542 232 76-25749/d/bluetoothgatt:onGetService（）-device=65:5E:34:E1:47:55 uuid=0000xxxx-0000-1000-8000-0080xxxx

ongetexpretice()-device=65:5e:34:e1:47:55 uuid=0000xxxx-0000-1000-8000-00805fxxxx srvctype=0 srvcinstid=0 charinstid=0 charprops=32 10-31 17:55:11.627 232 76-23290/d/bluetoothgatt:ongetexpretice()-device=65:5e:34:e1:47:55 uuid=0000xxx-0000-1000-8000-00805fxxxx srvctype=0 srvcinstid=0 charinstid=1 718 232 76-23289/D/Bluetoothgatt:ongetexpretice()-device=65:5e:34:e1:47:55 uuid=0000xxxx-0000-1000-8000-00805fxxxxx srvctype=0 srvcinstid=0 charinstid=0 charpps=2}`

Answer 1

我正在用micromax canvas作为中心测试设备变化。现在我换了设备，这里的服务被发现了，并得到了回调…

但是writeCharacteristics（）请求时，服务器（远程设备）没有触发回调onCharacteristicsReadRequest（），因为我只对所需的特性执行写操作。没有别的东西可以拒绝手术。