我想配对设备并连接它，但我有问题，我只能配对设备，但我无法连接它们。我想知道如何解决这个问题。我很害怕，我没有很好地解释我的问题，我无法连接手段，将手机连接到蓝牙耳机我只能配对，这里是代码
if (btAdapt.isEnabled()) {
tbtnSwitch.setChecked(false);
} else {
tbtnSwitch.setChecked(true);
}
// ============================================================
IntentFilter intent = new IntentFilter();
intent.addAction(BluetoothDevice.ACTION_FOUND);
intent.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED);
intent.addAction(BluetoothAdapter.ACTION_SCAN_MODE_CHANGED);
intent.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
registerReceiver(searchDevices, intent);
}
private BroadcastReceiver searchDevices = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
Bundle b = intent.getExtras();
Object[] lstName = b.keySet().toArray();
for (int i = 0; i < lstName.length; i++) {
String keyName = lstName[i].toString();
Log.e(keyName, String.valueOf(b.get(keyName)));
}
BluetoothDevice device = null;
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
device = intent
.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
if (device.getBondState() == BluetoothDevice.BOND_NONE) {
String str = "no pair|" + device.getName() + "|"
+ device.getAddress();
if (lstDevices.indexOf(str) == -1)
lstDevices.add(str);
adtDevices.notifyDataSetChanged();
}
}else if(BluetoothDevice.ACTION_BOND_STATE_CHANGED.equals(action)){
device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
switch (device.getBondState()) {
case BluetoothDevice.BOND_BONDING:
Log.d("BlueToothTestActivity", "it is pairing");
break;
case BluetoothDevice.BOND_BONDED:
Log.d("BlueToothTestActivity", "finish");
connect(device);
break;
case BluetoothDevice.BOND_NONE:
Log.d("BlueToothTestActivity", "cancel");
default:
break;
}
}
}
};
@Override
protected void onDestroy() {
this.unregisterReceiver(searchDevices);
super.onDestroy();
android.os.Process.killProcess(android.os.Process.myPid());
}
class ItemClickEvent implements AdapterView.OnItemClickListener {
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3)
{
if(btAdapt.isDiscovering())btAdapt.cancelDiscovery();
String str = lstDevices.get(arg2);
String[] values = str.split("\\|");
String address = values[2];
Log.e("address", values[2]);
BluetoothDevice btDev = btAdapt.getRemoteDevice(address);
try {
Boolean returnValue = false;
if (btDev.getBondState() == BluetoothDevice.BOND_NONE) {
BluetoothDevice.createBond(BluetoothDevice remoteDevice);
Method createBondMethod = BluetoothDevice.class
.getMethod("createBond");
Log.d("BlueToothTestActivity", "start");
returnValue = (Boolean) createBondMethod.invoke(btDev);
}else if(btDev.getBondState() == BluetoothDevice.BOND_BONDED){
connect(btDev);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
private void connect(BluetoothDevice btDev) {
UUID uuid = UUID.fromString(SPP_UUID);
try {
btSocket = btDev.createInsecureRfcommSocketToServiceRecord(uuid);
Log.d("BlueToothTestActivity", "connecting...");
btSocket.connect();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
class ClickEvent implements View.OnClickListener {
public void onClick(View v) {
if (v == btnSearch)
{
if (btAdapt.getState() == BluetoothAdapter.STATE_OFF) {
Toast.makeText(BlueToothTestActivity.this, "please open", 1000)
.show();
return;
}
if (btAdapt.isDiscovering())
btAdapt.cancelDiscovery();
lstDevices.clear();
Object[] lstDevice = btAdapt.getBondedDevices().toArray();
for (int i = 0; i < lstDevice.length; i++) {
BluetoothDevice device = (BluetoothDevice) lstDevice[i];
String str = "pair|" + device.getName() + "|"
+ device.getAddress();
lstDevices.add(str);
adtDevices.notifyDataSetChanged();
}
setTitle("address：" + btAdapt.getAddress());
btAdapt.startDiscovery();
} else if (v == tbtnSwitch) {
if (tbtnSwitch.isChecked() == false)
btAdapt.enable();
else if (tbtnSwitch.isChecked() == true)
btAdapt.disable();
} else if (v == btnDis)
{
Intent discoverableIntent = new Intent(
BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
discoverableIntent.putExtra(
BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
startActivity(discoverableIntent);
} else if (v == btnExit) {
try {
if (btSocket != null)
btSocket.close();
} catch (IOException e) {
e.printStackTrace();
}
BlueToothTestActivity.this.finish();
}
}
}
}
答案 0 :(得分：13)
您尚未指定，但我认为您的问题出在套接字创建部分而不是实际的connect（）调用中。这通常是出错的地方。
如何解决？
您的代码假定耳机支持不安全的BT通信。在许多情况下，这是事实，但并非全部。尝试调用createRfcommSocketToServiceRecord（）而不是
您的代码使用默认SPP UUID进行RFCOMM频道查找。对于API版本＆gt; = 15，这是错误的做法。而是尝试调用device.getUuids（）并使用第一个返回的UUID作为创建参数。 根据我自己的经验，即使对于15之前的API版本，您仍然可以调用getUuids（）并获得良好的结果，但您需要通过反射来完成。仅当上述操作失败时，才应使用默认SPP UUID
如果上述操作失败，您可以尝试激活“createRfcommSocket”隐藏API作为最后的手段。这对我有好几次，在多个Android版本上都有用。使用java反射激活此调用，并且由于本质上不安全，请使用try catch保护它。
请记住将您的逻辑放在AsyncTask中。您不希望UI线程阻止此类任务！
最后可以随意使用https://github.com/giladHaimov/BTWiz来更简单地处理蓝牙连接和简单的异步IO接口。
答案 1 :(得分：2)
引用您的代码：
btSocket = btDev.createInsecureRfcommSocketToServiceRecord(uuid);
Log.d("BlueToothTestActivity", "connecting...");
btSocket.connect();
您可以在官方Android文档中找到有关作为客户端here进行连接的代码。
我可以看到可能导致问题的4件事：
您可以发布Logcat日志吗？