Java 以编程方式配对蓝牙设备,而无需用户输入pin
我尝试连接的蓝牙设备始终具有相同的pincode。这样就可以通过编程方式设置管脚来配对设备 在尝试搜索如何实现这一点后,我得到了以下代码:Java 以编程方式配对蓝牙设备,而无需用户输入pin,java,android,bluetooth,Java,Android,Bluetooth,我尝试连接的蓝牙设备始终具有相同的pincode。这样就可以通过编程方式设置管脚来配对设备 在尝试搜索如何实现这一点后,我得到了以下代码: BluetoothDevice device = getDevice(); //To avoid the popup notification: device.getClass().getMethod("setPairingConfirmation", boolean.class).invoke(device, true); device.getClass
BluetoothDevice device = getDevice();
//To avoid the popup notification:
device.getClass().getMethod("setPairingConfirmation", boolean.class).invoke(device, true);
device.getClass().getMethod("cancelPairingUserInput", boolean.class).invoke(device, true);
byte[] pin = ByteBuffer.allocate(4).putInt(1234).array();
//int pinn = 1234;
//Entering pin programmatically:
Method ms = device.getClass().getMethod("setPin", byte[].class);
//Method ms = device.getClass().getMethod("setPasskey", int.class);
ms.invoke(device, pin);
//Bonding the device:
Method mm = device.getClass().getMethod("createBond", (Class[]) null);
mm.invoke(device, (Object[]) null);
cancelPairingUserInput
给了我一个NoSuchMethodException
,这很奇怪,因为该方法确实存在于BluetoothDevice
类中
它看起来像是Setpin
或SetPasskey
不起任何作用。这个设备无法配对。它仅在手动输入pin后配对
因此,唯一有效的代码行是:
//Bonding the device:
Method mm = device.getClass().getMethod("createBond", (Class[]) null);
mm.invoke(device, (Object[]) null);
Logcat输出:
09-27 12:34:46.408: ERROR/App(11671): cancelPairingUserInput [boolean]
java.lang.NoSuchMethodException: cancelPairingUserInput [boolean]
at java.lang.Class.getConstructorOrMethod(Class.java:460)
at java.lang.Class.getMethod(Class.java:915)
at test.app.bluetooth.model.BluetoothDiscoveryAndPairing.pair(BluetoothDiscoveryAndPairing.java:97)
at test.app.bluetooth.model.BluetoothDiscoveryAndPairing.access$000(BluetoothDiscoveryAndPairing.java:25)
at test.app.bluetooth.model.BluetoothDiscoveryAndPairing$1.onReceive(BluetoothDiscoveryAndPairing.java:79)
at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:756)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4921)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
at dalvik.system.NativeStart.main(Native Method)
那么我做错了什么呢?您的设备中不存在隐藏方法cancelPairingUserInput。不要用它
IntentFilter filter2 = new IntentFilter(
"android.bluetooth.device.action.PAIRING_REQUEST");
mActivity.registerReceiver(
pairingRequest, filter2);
private final BroadcastReceiver pairingRequest = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals("android.bluetooth.device.action.PAIRING_REQUEST")) {
mBluetoothDevice = needed;
try {
byte[] pin = (byte[]) BluetoothDevice.class.getMethod("convertPinToBytes", String.class).invoke(BluetoothDevice.class, "1234");
Method m = mBluetoothDevice.getClass().getMethod("setPin", byte[].class);
m.invoke(mBluetoothDevice, pin);
mBluetoothDevice.getClass().getMethod("setPairingConfirmation", boolean.class).invoke(mBluetoothDevice, true);
}
catch(Exception e)
{
e.printStackTrace();
}
@DuncanJones我在startpost中添加了stacktrace。这可以在19之前的API级别完成吗?android.bluetooth.device.action.PAIRING_请求仅在API 19中引入。为什么需要setPairingConfirmation()?Android文档说它只适用于配对、变体、密钥确认,而不适用于传统配对。此外,在Android6上,它需要BLUETOOTH_特权,以防任何人无法访问convertPinToBytes。源代码可在此处找到:这不起作用,因为它需要BLUETOOTH_特权权限,这仅在系统应用程序上可用。是否只有尝试配对的设备才需要此代码?我们不需要其他配对设备上的任何代码吗?您不需要其他设备上的任何代码。你应该接受这个连接。(我为连接到移动打印机的android手机编写了此代码。)
IntentFilter filter2 = new IntentFilter(
"android.bluetooth.device.action.PAIRING_REQUEST");
mActivity.registerReceiver(
pairingRequest, filter2);
private final BroadcastReceiver pairingRequest = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals("android.bluetooth.device.action.PAIRING_REQUEST")) {
mBluetoothDevice = needed;
try {
byte[] pin = (byte[]) BluetoothDevice.class.getMethod("convertPinToBytes", String.class).invoke(BluetoothDevice.class, "1234");
Method m = mBluetoothDevice.getClass().getMethod("setPin", byte[].class);
m.invoke(mBluetoothDevice, pin);
mBluetoothDevice.getClass().getMethod("setPairingConfirmation", boolean.class).invoke(mBluetoothDevice, true);
}
catch(Exception e)
{
e.printStackTrace();
}