大家好， 在我的应用程序中，我只想发送数据 2.3.3 及更高版本的 android 欺骗，但是当我开始发现蓝牙设备时，我的应用程序会获取所有已激活的设备。
这些设备都是android和其他设备。我如何过滤或了解具有2.3.3或更高版本的设备
我的代码如下：
公共类 MainActivity 扩展 Activity 实现 OnItemClickListener {
Button mBtnConnect;
ListView mlist;
BluetoothAdapter mBluetoothAdapter;
IntentFilter filter;
MyBluetoothAdapter blu_adapter=null;
Set<BluetoothDevice> deviceArray;
ArrayList<String> pairedDevices;
ArrayList<String> pairedDevices_list;
ArrayList<String> bonded_list;
ArrayList<BluetoothDevice> Devices;
public static final UUID MY_UUID = UUID.fromString("00001101-0000-1000-8000-00805f9b34fb");
protected static final int SUCCESS_CONNECT = 0;
protected static final int MESSAGE_READ=1;
Handler mHandler=new Handler() {
public void handleMessage(Message msg) {
super.handleMessage(msg);
switch (SUCCESS_CONNECT) {
case SUCCESS_CONNECT:
ConnectedThread connecteThread=new ConnectedThread((BluetoothSocket)msg.obj);
Toast.makeText(getApplicationContext(), "Connected", 0).show();
String s="successfully connected ";
connecteThread.write(s.getBytes());
break;
case MESSAGE_READ:
byte[] readBuf=(byte[]) msg.obj;
String string =new String(readBuf);
Toast.makeText(getApplicationContext(), string, 0).show();
break;
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initilizeField();
if (mBluetoothAdapter == null) {
Toast.makeText(getApplicationContext(),
"No bluetooth device found", 0).show();
finish();
}
else {
if (!mBluetoothAdapter.isEnabled()) {
TurnonBT();
}
getPairedDevices();
StartDiscovery();
}
mBtnConnect.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
blu_adapter=new MyBluetoothAdapter(MainActivity.this, pairedDevices,bonded_list);
mlist.setAdapter(blu_adapter);
}
});
}
private void StartDiscovery() {
// TODO Auto-generated method stub
mBluetoothAdapter.cancelDiscovery();
mBluetoothAdapter.startDiscovery();
}
private void TurnonBT() {
// TODO Auto-generated method stub
Intent enableBluetooth = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBluetooth, 1);
}
private void initilizeField() {
// TODO Auto-generated method stub
mlist = (ListView) findViewById(R.id.listView);
mBtnConnect = (Button) findViewById(R.id.mBtnConnect);
mlist = (ListView) findViewById(R.id.listView);
pairedDevices = new ArrayList<String>();
pairedDevices_list = new ArrayList<String>();
bonded_list=new ArrayList<String>();
Devices=new ArrayList<BluetoothDevice>();
/*listAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, 0);
mlist.setAdapter(listAdapter);*/
//click listner
mlist.setOnItemClickListener(this);
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
Intent discoverableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 400);
startActivity(discoverableIntent);
Toast.makeText(getApplicationContext(), "Now your device is discoverable by others", Toast.LENGTH_LONG).show();
filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
registerReceiver(receiver, filter);
filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_STARTED);
registerReceiver(receiver, filter);
filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
registerReceiver(receiver, filter);
filter = new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED);
registerReceiver(receiver, filter);
// deviceArray=new
}
BroadcastReceiver receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
String action = intent.getAction();
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
Devices.add(device);
//- listAdapter.add(device.getName() + " "+s+" "+"\n"+ device.getAddress());
for (BluetoothDevice devicePaired : Devices) {
if(bonded_list.contains(devicePaired)){
}
else{
bonded_list.add("Not Paired");
}
}
if(pairedDevices.contains(device.getName())){
}
else{
pairedDevices.add(device.getName());
}
} else if (BluetoothAdapter.ACTION_DISCOVERY_STARTED.equals(action)) {
} else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
/* if(listAdapter.getCount()>0){
for(int i=0;i<listAdapter.getCount();i++){
for(int a=0;a<pairedDevices.size();a++){
if(listAdapter.getItem(i).equals(pairedDevices.get(a))){
}
}
}
}*/
} else if (BluetoothAdapter.ACTION_STATE_CHANGED.equals(action)) {
if(mBluetoothAdapter.getState()==mBluetoothAdapter.STATE_OFF){
TurnonBT();
}
}
}
};
private void getPairedDevices() {
// TODO Auto-generated method stub
deviceArray = mBluetoothAdapter.getBondedDevices();
if (deviceArray.size() > 0) {
for (BluetoothDevice device : deviceArray) {
if(pairedDevices.contains(device.getName())){
//device already in paired array list
}
else{
pairedDevices.add(device.getName());
bonded_list.add("Paired");
}
}
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_CANCELED) {
Toast.makeText(getApplicationContext(),
"Bluetooth must be enable to connect", Toast.LENGTH_SHORT)
.show();
finish();
}
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
getPairedDevices();
StartDiscovery();
/*filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
registerReceiver(receiver, filter);
filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_STARTED);
registerReceiver(receiver, filter);
filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
registerReceiver(receiver, filter);
filter = new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED);
registerReceiver(receiver, filter);*/
//unregisterReceiver(receiver);
}
@Override
protected void onDestroy() {
super.onDestroy();
if (mBluetoothAdapter != null) {
mBluetoothAdapter.cancelDiscovery();
}
unregisterReceiver(receiver);
}
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {
// TODO Auto-generated method stub
if(mBluetoothAdapter.isDiscovering()){
mBluetoothAdapter.cancelDiscovery();
}
if(bonded_list.get(position).contains("Paired")){
//Toast.makeText(getApplicationContext(), "This device is already paired", 0).show();
//Object[] o=deviceArray.toArray();
BluetoothDevice selectedDevices=Devices.get(position);
ConnectThread connect=new ConnectThread(selectedDevices);
connect.start();
}
else{
Toast.makeText(getApplicationContext(), "This device is Not paired", 0).show();
}
}
private class ConnectThread extends Thread {
private final BluetoothSocket mmSocket;
private final BluetoothDevice mmDevice;
public ConnectThread(BluetoothDevice device) {
// Use a temporary object that is later assigned to mmSocket,
// because mmSocket is final
BluetoothSocket tmp = null;
mmDevice = device;
// Get a BluetoothSocket to connect with the given BluetoothDevice
try {
// MY_UUID is the app's UUID string, also used by the server code
tmp = device.createRfcommSocketToServiceRecord(MY_UUID);
} catch (IOException e) { }
mmSocket = tmp;
}
public void run() {
// Cancel discovery because it will slow down the connection
mBluetoothAdapter.cancelDiscovery();
try {
// Connect the device through the socket. This will block
// until it succeeds or throws an exception
mmSocket.connect();
} catch (IOException connectException) {
// Unable to connect; close the socket and get out
try {
mmSocket.close();
} catch (IOException closeException) { }
return;
}
// Do work to manage the connection (in a separate thread)
// manageConnectedSocket(mmSocket);
mHandler.obtainMessage(SUCCESS_CONNECT,mmSocket).sendToTarget();
}
private void manageConnectedSocket(BluetoothSocket mmSocket2) {
// TODO Auto-generated method stub
}
/** Will cancel an in-progress connection, and close the socket */
public void cancel() {
try {
mmSocket.close();
} catch (IOException e) { }
}
}
private class ConnectedThread extends Thread {
private final BluetoothSocket mmSocket;
private final InputStream mmInStream;
private final OutputStream mmOutStream;
public ConnectedThread(BluetoothSocket socket) {
mmSocket = socket;
InputStream tmpIn = null;
OutputStream tmpOut = null;
// Get the input and output streams, using temp objects because
// member streams are final
try {
tmpIn = socket.getInputStream();
tmpOut = socket.getOutputStream();
} catch (IOException e) { }
mmInStream = tmpIn;
mmOutStream = tmpOut;
}
public void run() {
byte[] buffer; // buffer store for the stream
int bytes; // bytes returned from read()
// Keep listening to the InputStream until an exception occurs
while (true) {
try {
// Read from the InputStream
buffer= new byte[1024];
bytes = mmInStream.read(buffer);
// Send the obtained bytes to the UI activity
mHandler.obtainMessage(MESSAGE_READ, bytes, -1, buffer)
.sendToTarget();
} catch (IOException e) {
break;
}
}
}
/* Call this from the main activity to send data to the remote device */
public void write(byte[] bytes) {
try {
mmOutStream.write(bytes);
} catch (IOException e) { }
}
/* Call this from the main activity to shutdown the connection */
public void cancel() {
try {
mmSocket.close();
} catch (IOException e) { }
}
}
}