如何以编程方式配对蓝牙设备Android

Question

我正在开发一个应用程序,我想连接蓝牙设备主要问题是我不希望用户输入所需的引脚而不是应用程序应该自己做...我没有任何连接相关的问题...只想要按应用程序本身插入并完成引脚认证过程.

我发现以下代码我确信它正在工作但不确定如何在此代码中添加引脚？

private void pairDevice(BluetoothDevice device) {
        try {
            Log.d("pairDevice()", "Start Pairing...");
            Method m = device.getClass().getMethod("createBond", (Class[]) null);
            m.invoke(device, (Object[]) null);
            Log.d("pairDevice()", "Pairing finished.");
        } catch (Exception e) {
            Log.e("pairDevice()", e.getMessage());
        }
    }

有谁知道如何在上面的代码或任何类似的代码中输入pin来解决问题..谢谢

Answer 1

在进行程序化配对时,如何避免或取消Android的蓝牙配对通知？

这似乎给你答案,进针和所有.它涉及在收到消息时发送.setPin().

Answer 2

所以,我有这个问题,如果有人需要在android 4.4.2中工作的答案.

 IntentFilter filter = new IntentFilter(
                "android.bluetooth.device.action.PAIRING_REQUEST");


        /*
         * Registering a new BTBroadcast receiver from the Main Activity context
         * with pairing request event
         */
        registerReceiver(
                new PairingRequest(), filter);

和接收器的代码.

  public static class PairingRequest extends BroadcastReceiver {
        public PairingRequest() {
            super();
        }

        @Override
        public void onReceive(Context context, Intent intent) {
            if (intent.getAction().equals("android.bluetooth.device.action.PAIRING_REQUEST")) {
                try {
                    BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                    int pin=intent.getIntExtra("android.bluetooth.device.extra.PAIRING_KEY", 0);
                    //the pin in case you need to accept for an specific pin
                    Log.d("PIN", " " + intent.getIntExtra("android.bluetooth.device.extra.PAIRING_KEY",0));
                    //maybe you look for a name or address
                    Log.d("Bonded", device.getName());
                    byte[] pinBytes;
                    pinBytes = (""+pin).getBytes("UTF-8");
                    device.setPin(pinBytes);
                    //setPairing confirmation if neeeded
                    device.setPairingConfirmation(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
    }

并在清单文件中.

<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />

和broadcastReceiver.

 <receiver android:name=".MainActivity$PairingRequest">
                <intent-filter>
                    <action android:name="android.bluetooth.device.action.PAIRING_REQUEST" />
                    <action android:name="android.bluetooth.device.action.PAIRING_CANCEL" />
                </intent-filter>
</receiver>

Answer 3

上面已经回答了如何设置密码（这对我有帮助）。然而，我在下面分享了适用于 Android 6 的简单代码：

BluetoothAdapter mBTA = BluetoothAdapter.getDefaultAdapter();
if (mBTA.isDiscovering()) mBTA.cancelDiscovery();
mBTA.startDiscovery();
...

/** In a broadcast receiver: */

if (BluetoothDevice.ACTION_FOUND.equals(action)) { // One device found.

    BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
    Log.d(TAG, "Start Pairing... with: " + device.getName());
    device.createBond();
}

// If you want to auto-input the pin#:
else if (BluetoothDevice.ACTION_PAIRING_REQUEST.equals(action)){

                    BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                    device.setPin("1234".getBytes());
}

Answer 4

试试这个代码：

public void pairDevice(BluetoothDevice device)
{
    String ACTION_PAIRING_REQUEST = "android.bluetooth.device.action.PAIRING_REQUEST";
    Intent intent = new Intent(ACTION_PAIRING_REQUEST);
    String EXTRA_DEVICE = "android.bluetooth.device.extra.DEVICE";
    intent.putExtra(EXTRA_DEVICE, device);
    String EXTRA_PAIRING_VARIANT = "android.bluetooth.device.extra.PAIRING_VARIANT";
    int PAIRING_VARIANT_PIN = 0;
    intent.putExtra(EXTRA_PAIRING_VARIANT, PAIRING_VARIANT_PIN);
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    context.startActivity(intent);
}

Intent intent = new Intent(BluetoothDevice.ACTION_PAIRING_REQUEST);
intent.putExtra(EXTRA_DEVICE, device);
int PAIRING_VARIANT_PIN = 272;
intent.putExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT, PAIRING_VARIANT_PIN);
sendBroadcast(intent);

Intent intent = new Intent(Settings.ACTION_BLUETOOTH_SETTINGS);
startActivityForResult(intent, REQUEST_PAIR_DEVICE);

我希望这有帮助

参考：http : //pastebin.com/N8dR4Aa1

Answer 5

BluetoothDevice.ACTION_PAIRING_REQUESTonCreate()注册一个接收者

val pairingRequestFilter = IntentFilter(BluetoothDevice.ACTION_PAIRING_REQUEST)
        registerReceiver(pairingReceiver, pairingRequestFilter)

setPin()在接收器上使用并调用设置您的密码abortBroadcast()

val PAIRING_PIN=1234

private var pairingReceiver = object : BroadcastReceiver() {
        override fun onReceive(context: Context?, intent: Intent?) {
            val action = intent!!.action
            if (BluetoothDevice.ACTION_PAIRING_REQUEST == action) {
                val device: BluetoothDevice? =intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE)
                val type =intent.getIntExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT, BluetoothDevice.ERROR)
                if (type == BluetoothDevice.PAIRING_VARIANT_PIN) {
                    device?.setPin(PAIRING_PIN.toByteArray())
                    abortBroadcast()
                }
            }
        }
    }

不要忘记取消注册接收器onDestroy()

override fun onDestroy() {
        super.onDestroy()
        unregisterReceiver(pairingReceiver)
    }

如果它不适合您，请尝试为接收器设置高优先级

val pairingRequestFilter = IntentFilter(BluetoothDevice.ACTION_PAIRING_REQUEST)          
pairingRequestFilter.priority = IntentFilter.SYSTEM_HIGH_PRIORITY - 1
            registerReceiver(pairingReceiver, pairingRequestFilter)

您还可以注册接收器来BluetoothDevice.ACTION_BOND_STATE_CHANGED读取配对状态

val filter = IntentFilter(BluetoothDevice.ACTION_BOND_STATE_CHANGED)
        registerReceiver(receiver, filter)