Android – BLE绑定以编程方式不适用于所有CoolPad Note 3

我正在使用下面的广播接收器来捕获绑定请求并在没有用户弹出请求的情况下绑定它.

private static BroadcastReceiver pairingBroadcastReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            if (BluetoothDevice.ACTION_PAIRING_REQUEST.equals(intent.getAction())) {
                BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                int type = intent.getIntExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT, BluetoothDevice.ERROR);

                Toast.makeText(context, "broadcast type "+type, Toast.LENGTH_LONG).show();

                if (type == BluetoothDevice.PAIRING_VARIANT_PIN) {
                    if(devicePin != null) {
                        CommonStuff.Log("bond pin "+devicePin);
                        Toast.makeText(context, "broadcast bond pin "+devicePin, Toast.LENGTH_LONG).show();
                        byte[] pin = new byte[10];
                        try {
                            pin = (byte[]) BluetoothDevice.class.getMethod("convertPinToBytes", String.class)
                                    .invoke(BluetoothDevice.class, devicePin);
                        } catch (IllegalAccessException e) {

                        } catch (InvocationTargetException e) {

                        } catch (NoSuchMethodException e) {

                        }
                        /*for (int i=0; i< pin.length; i++) {
                            CommonStuff.Log("byte bond pin "+pin[i]);
                        }*/
                        device.setPin(pin);
                        /*if(type == BluetoothDevice.PAIRING_VARIANT_PASSKEY_CONFIRMATION || type == 1) {
                            device.setPairingConfirmation(true);
                        }*/
                        abortBroadcast();
                    }
                }
            } else if(BluetoothDevice.ACTION_BOND_STATE_CHANGED.equals(intent.getAction())) {
                BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                int state = intent.getIntExtra(BluetoothDevice.EXTRA_BOND_STATE, BluetoothDevice.BOND_NONE);

                if(state == BluetoothDevice.BOND_BONDING)
                    return;

                    if(state == BluetoothDevice.BOND_BONDED) {
                        Toast.makeText(context, "Bond success",  Toast.LENGTH_LONG).show();
                    } else {
                        Toast.makeText(context, "Bond failed",  Toast.LENGTH_LONG).show();
                    }
            }
        }
    };

假设devicePin是全局初始化的.这适用于大多数手机.但是在coolpad note 3中,我将BluetoothDevice.EXTRA_PAIRING_VARIANT值设置为1.当我尝试使用setPin()绑定此设备而不考虑EXTRA_PAIRING_VARIANT值时,绑定失败.

有没有人遇到同样的问题？请帮我解决这个问题.

解决方法:

BluetoothDevice.EXTRA_PAIRING_VARIANT为1表示只有用户才能输入密码.但是以编程方式我们可以使用名为setpasskey的私有方法设置密钥.

如果在上面的代码中键入的情况,请将以下代码添加为else

else if(type == 1) {
    int pin = Integer.parseInt(devicePin);
    try {
        device.getClass().getMethod("setPasskey", int.class)
                .invoke(device, pin);
        abortBroadcast();
    } catch (IllegalAccessException e) {

    } catch (InvocationTargetException e) {

    } catch (NoSuchMethodException e) {

    }
}

标签：android,bluetooth,bluetooth-lowenergy,android-bluetooth,android-ble
来源： https://codeday.me/bug/20190701/1349799.html