我正在尝试编写一个Android应用程序来连接我的蓝牙服务器所在的覆盆子。如果它改变了问题，覆盆子上的蓝牙有一个A2DP配置文件，设备是配对的。我想建立一个RFCOMM连接来向raspberry发送命令。
以下是连接的代码：
public class ConnectBluetooth extends Thread {
private final BluetoothSocket mmSocket;
private final BluetoothDevice mmDevice;
static final UUID uuid = UUID.fromString("0000110E-0000-1000-8000-00805F9B34FB");
public ConnectBluetooth(BluetoothDevice device) {
// Use a temporary object that is later assigned to mmSocket
// because mmSocket is final.
BluetoothSocket tmp = null;
mmDevice = device;
try {
// Get a BluetoothSocket to connect with the given BluetoothDevice.
// MY_UUID is the app's UUID string, also used in the server code.
tmp = device.createInsecureRfcommSocketToServiceRecord(uuid);
} catch (IOException e) {
Log.e("BluetoothC", "Socket's create() method failed", e);
}
mmSocket = tmp;
}
public void run() {
// Cancel discovery because it otherwise slows down the connection.
// mBluetoothAdapter.
try {
// Connect to the remote device through the socket. This call blocks
// until it succeeds or throws an exception.
mmSocket.connect();
} catch (IOException connectException) {
Log.e("BluetoothC", "Could not connect");
try {
mmSocket.close();
} catch (IOException closeException) {
Log.e("BluetoothC", "Could not close the client socket", closeException);
}
return;
}
我已经尝试了几个UUID，getUUIDS方法为设备返回。
以下是我使用该类的代码：
final Button button = (Button) findViewById(R.id.button9);
button.setOnClickListener(new View.OnClickListener()
{
public void onClick (View view){
Toast.makeText(getApplicationContext(),
"Button pressed", Toast.LENGTH_LONG)
.show();
BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
BluetoothDevice deviceBlth=null;
if (mBluetoothAdapter == null) {
Toast.makeText(getApplicationContext(),
"Device does not suppport Blth", Toast.LENGTH_LONG)
.show();
}
if (!mBluetoothAdapter.isEnabled()) {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
}
Set<BluetoothDevice> pairedDevices = mBluetoothAdapter.getBondedDevices();
if (pairedDevices.size() > 0) {
// There are paired devices. Get the name and address of each paired device.
for (BluetoothDevice device : pairedDevices) {
if(Objects.equals(device.getName(), "raspberrypi")){
{ Toast.makeText(getApplicationContext(),
"Raspberry found", Toast.LENGTH_LONG)
.show();}
String deviceName = device.getName();
String deviceHardwareAddress = device.getAddress(); // MAC address
//Add UUID here
String deviceUUID=device.getUuids()[0].toString();
Log.w("Bluetooth",deviceUUID);
Log.w("Bluetooth",device.getUuids()[1].toString());
Log.w("Bluetooth",device.getUuids()[2].toString());
Toast.makeText(getApplicationContext(),
deviceUUID, Toast.LENGTH_LONG)
.show();
deviceBlth=device;
break;
}
else
{ Toast.makeText(getApplicationContext(),
"Raspberry not found", Toast.LENGTH_LONG)
.show();}
}
}
Intent discoverableIntent =
new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
startActivity(discoverableIntent);
Toast.makeText(getApplicationContext(),
deviceBlth.getName(), Toast.LENGTH_LONG)
.show();
ConnectBluetooth connectB= new ConnectBluetooth(deviceBlth);
mBluetoothAdapter.cancelDiscovery();
connectB.run();
}
});
这是运行应用程序时的日志：
05-25 23:44:41.438: W/Bluetooth(8822): 0000110e-0000-1000-8000-00805f9b34fb
05-25 23:44:41.488: D/BluetoothAdapter(8822): cancelDiscovery
05-25 23:44:41.488: D/BluetoothAdapterProperties(5415): mDiscovering is false
05-25 23:44:41.488: E/BluetoothAdapterService(5415): This is not a scanning status. cancelDiscovery() will be not called.
05-25 23:44:41.488: D/BluetoothAdapter(8822): cancelDiscovery = true
05-25 23:44:41.498: D/BluetoothUtils(8822): isSocketAllowedBySecurityPolicy start : device null
05-25 23:44:41.498: D/BluetoothSocket(8822): connect(): myUserId = 0
05-25 23:44:41.498: W/BluetoothAdapter(8822): getBluetoothService() called with no BluetoothManagerCallback
05-25 23:44:42.298: E/BluetoothRemoteDevices(5415): aclStateChangeCallback: State:Connected to Device:B8:27:EB:58:45:XX, linktype is 1
05-25 23:44:42.298: D/BluetoothUtils(5415): getBtEnabledContainers(): btContainers = []
05-25 23:44:42.308: D/BluetoothUtils(5415): getBtEnabledContainers(): btContainers = []
05-25 23:44:42.308: V/BluetoothEventManager(2323): onReceive :: android.bluetooth.device.action.NAME_CHANGED
05-25 23:44:42.308: V/BluetoothEventManager(5536): onReceive :: android.bluetooth.device.action.NAME_CHANGED
05-25 23:44:42.318: E/BluetoothC(8822): Could not connect
05-25 23:44:42.348: D/BluetoothTile(2323): handleUpdateState : supported = true, enabled = true, enabling = false, connected = false, connecting = false, mController.getLastDeviceName() = null
05-25 23:44:43.378: D/BluetoothAdapter(5536): setScanMode() Mode :23, duration : 300
05-25 23:44:43.388: D/BluetoothAdapterProperties(5415): Discoverable Timeout:300
05-25 23:44:43.388: D/BluetoothDiscoverableTimeoutReceiver(5536): setDiscoverableAlarm(): alarmTime = 1495745383396
05-25 23:44:43.388: D/BluetoothUtils(5415): getBtEnabledContainers(): btContainers = []
05-25 23:44:43.388: D/BluetoothDiscoverableTimeoutReceiver(5536): setDiscoverableAlarm(): cancel prev alarm
05-25 23:44:43.388: D/BluetoothAdapterProperties(5415): Scan Mode:23
05-25 23:44:43.398: D/BluetoothUtils(5415): makeManufacturerData ::
05-25 23:44:43.418: E/BluetoothServiceJni(5415): adapter_properties_callback: Status 1 is incorrect
05-25 23:44:46.388: E/BluetoothRemoteDevices(5415): aclStateChangeCallback: State:DisConnected to Device:B8:27:EB:58:45:XX
05-25 23:44:46.388: V/BluetoothEventManager(2323): onReceive :: android.bluetooth.device.action.ACL_DISCONNECTED
05-25 23:44:46.388: E/BluetoothEventManager(2323): ACTION_ACL_DISCONNECTED
05-25 23:44:46.388: D/BluetoothUtils(5415): getBtEnabledContainers(): btContainers = []
05-25 23:44:46.388: D/BluetoothDataManager(5415): BluetoothDataManager :: notifyDisconnectReason() is called!!!
05-25 23:44:46.388: D/BluetoothAdapterService(5415): getAdapterService() - returning com.android.bluetooth.btservice.AdapterService@2365ebc
05-25 23:44:46.398: V/BluetoothEventManager(5536): onReceive :: android.bluetooth.device.action.ACL_DISCONNECTED
05-25 23:44:46.398: E/BluetoothEventManager(5536): ACTION_ACL_DISCONNECTED
05-25 23:44:46.398: D/BluetoothAdapterService(5415): getAdapterService() - returning com.android.bluetooth.btservice.AdapterService@2365ebc
05-25 23:44:46.408: D/BluetoothUtils(5415): getBtEnabledContainers(): btContainers = []
05-25 23:44:46.408: V/BluetoothEventManager(5536): onReceive :: android.bluetooth.device.action.NAME_CHANGED
05-25 23:44:46.408: V/BluetoothEventManager(2323): onReceive :: android.bluetooth.device.action.NAME_CHANGED
05-25 23:44:46.408: D/BluetoothUtils(5415): getBtEnabledContainers(): btContainers = []
05-25 23:44:46.408: E/BluetoothRemoteDevices(5415): devicePropertyChangedCallback: bdDevice: B8:27:EB:58:45:6F, value is empty for type: 241
05-25 23:44:46.408: I/BluetoothPbapService(5415): action: android.bluetooth.device.action.ACL_DISCONNECTED, state: -2147483648
05-25 23:44:46.408: E/BluetoothPbapService(5415): Device B8:27:EB:58:45:6F not waiting for authorization..Skipping cancel dialog...
05-25 23:44:46.428: V/BluetoothEventManager(5536): onReceive :: android.bluetooth.device.action.CLASS_CHANGED
05-25 23:44:46.438: V/BluetoothEventManager(2323): onReceive :: android.bluetooth.device.action.CLASS_CHANGED
05-25 23:44:46.438: D/BluetoothTile(2323): handleUpdateState : supported = true, enabled = true, enabling = false, connected = false, connecting = false, mController.getLastDeviceName() = null
05-25 23:44:46.898: D/BluetoothAdapterService(5415): getAdapterService() - returning com.android.bluetooth.btservice.AdapterService@2365ebc
有人可以指出我在哪里做错了吗？