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[英]Android : Programmatically pair a bluetooth device; Incorrect pin or passkey on some devices?
[英]Defining Passkey for Android Bluetooth Connection
再次需要您的帮助:
我想与obd2-bluetooth-adapter建立连接。 因此,我看了AndroidSDK中的BluetoothChat-Example。 我能够与计算机建立连接,但无法将android平板电脑与odb2-bluetooth-adapter(elm327)配对。 找到了一些提示,例如:
myRemoteBluetoothDevice.setPassKey(....);
首先,我无法在“ myRemoteBluetoothDevice”上使用该功能-然后我不知道在哪里使用此功能。 在连接线程内?
public synchronized void connect(BluetoothDevice device, boolean secure) {
if (D) Log.d(TAG, "connect to: " + device);
// Cancel any thread attempting to make a connection
if (mState == STATE_CONNECTING) {
if (mConnectThread != null) {mConnectThread.cancel(); mConnectThread = null;}
}
// Cancel any thread currently running a connection
if (mConnectedThread != null) {mConnectedThread.cancel(); mConnectedThread = null;}
// Start the thread to connect with the given device
mConnectThread = new ConnectThread(device, secure);
mConnectThread.start();
setState(STATE_CONNECTING);
}
我认为可能的解决方案是实现事件侦听器或类似的方法,当远程设备需要密码时调用该方法? 但是我必须在哪里实施呢? 我必须在哪里使用它? 有人可以帮我吗?
提前致谢 !!!
PS:“我的应用”基于以下示例: https : //android.googlesource.com/platform/development/+/25b6aed7b2e01ce7bdc0dfa1a79eaf009ad178fe/samples/BluetoothChat/src/com/example/android/BluetoothChat/BluetoothChatService.java
试图实施第一个答案:
我的BroadcastReceiver:
private final BroadcastReceiver mReceiverRequiresPin = new BroadcastReceiver(){
@Override
public void onReceive(Context context, Intent intent){
try {
BluetoothDevice newDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
Class<?> btDeviceInstance = Class.forName(BluetoothDevice.class.getCanonicalName());
Method convert = btDeviceInstance.getMethod("convertPinToBytes", String.class);
byte[] pin = (byte[]) convert.invoke(newDevice, "1234");
Method setPin = btDeviceInstance.getMethod("setPin", byte[].class);
boolean success = (Boolean) setPin.invoke(newDevice, pin);
}
catch (Exception e) {
e.printStackTrace();
}
}
};
还有我的连接方法,我在其中注册broadcastReceiver:
private void connect(CordovaArgs args, boolean secure,
CallbackContext callbackContext) throws JSONException {
final String actionPinRequested = "android.bluetooth.device.action.PAIRING_REQUEST";
IntentFilter intentFilterPinRequested = new IntentFilter(actionPinRequested);
cordova.getActivity().registerReceiver(mReceiverRequiresPin, intentFilterPinRequested);
String macAddress = args.getString(0);
BluetoothDevice device = bluetoothAdapter.getRemoteDevice(macAddress);
if (device != null) {
connectCallback = callbackContext;
bluetoothSerialService.connect(device, secure);
PluginResult result = new PluginResult(
PluginResult.Status.NO_RESULT);
result.setKeepCallback(true);
callbackContext.sendPluginResult(result);
} else {
callbackContext.error("Could not connect to " + macAddress);
}
}
非常感谢您的帮助! 提前致谢。
没有人有暗示吗?
注册以下广播侦听器:android.bluetooth.device.action.PAIRING_REQUEST。
在一次:
BluetoothDevice newDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
Class<?> btDeviceInstance = Class.forName(BluetoothDevice.class.getCanonicalName());
Method convert = btDeviceInstance.getMethod("convertPinToBytes", String.class);
byte[] pin = (byte[]) convert.invoke(newDevice, "1234");
Method setPin = btDeviceInstance.getMethod("setPin", byte[].class);
success = (Boolean) setPin.invoke(newDevice, pin);
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