最近通过Google学习了两部设备之间通过蓝牙连接实现聊天的功能，以下为代码：
/**
* BlueToothChat:开启蓝牙，300s可见，连接设备，线程UI处理，聊天设置，整个界面功能的实现
* @author micro
*
*/
public class BlueToothChat extends Activity {
//Handler的处理码
public static final int MESSAGE_STATE_CHANGE = 1;
public static final int MESSAGE_READ = 2;
public static final int MESSAGE_WRITE = 3;
public static final int MESSAGE_DEVICE_NAME = 4;
public static final int MESSAGE_TOAST = 5;
//设备名和TOAST
public static final String DEVICE_NAME = "device_name";
public static final String TOAST = "toast";
//请求码
public static final int REQUEST_CONNECT_DEVICE = 2;
public static final int REQUEST_ENABLE_BT = 3;
//控件
private ListView mConversation;
private EditText mEdit;
private Button sendBtn;
private String mConnectedServiceName; //设备名
private ArrayAdapter<String> mConversationAdapter; //聊天设配器
private StringBuffer mOutString ; //输出的信息
private BluetoothAdapter mBluetoothAdapter = null; //蓝牙适配器
private BlueToothChatService mBlueToothChatService = null; //服务端
@Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//获取默认的蓝牙适配器
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if(mBluetoothAdapter==null){
Toast.makeText(getApplicationContext(), "此设备不支持蓝牙", Toast.LENGTH_SHORT).show();
this.finish(); //结束
return ;
}
}
/**
* 在onStart方法中开启蓝牙
*/
@Override
public void onStart(){
super.onStart();
//如果蓝牙没开，则开启蓝牙，开启后回调REQUEST_ENABLE_BT
if(!mBluetoothAdapter.isEnabled()){
Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableIntent,REQUEST_ENABLE_BT);
}else{
if(mBlueToothChatService == null){
//设置聊天
setupChat();
}
}
}
/**
* 在onResume方法中开启服务端里的线程
*/
@Override
public void onResume(){
super.onResume();
//只有满足以下的两个条件之后我们才会开启
if(mBlueToothChatService!=null){
if(mBlueToothChatService.getState()==BlueToothChatService.STATE_NONE){
mBlueToothChatService.start();
}
}
}
/**
* 聊天设置,初始化及监听
*/
private void setupChat() {
// TODO Auto-generated method stub
//初始化ListView
mConversationAdapter = new
ArrayAdapter<String>(this,R.layout.message);
mConversation = (ListView)findViewById(R.id.chat_list);
mConversation.setAdapter(mConversationAdapter);
//发送按钮
sendBtn = (Button)findViewById(R.id.send_btn);
sendBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
TextView mTextView = (TextView)findViewById(R.id.edit_text);
String message = mTextView.getText().toString();
sendMessage(message);
}
});
//Edit监听
mEdit = (EditText)findViewById(R.id.edit_text);
mEdit.setOnEditorActionListener(mWriteLisentner);
//初始化
mBlueToothChatService = new BlueToothChatService(this,handler);
mOutString = new StringBuffer("");
}
//发送信息到Handler处理
private void sendMessage(String message) {
// TODO Auto-generated method stub
if(mBlueToothChatService.getState()!=BlueToothChatService.STATE_CONNECTED){
Toast.makeText(getApplicationContext(), R.string.not_connected, Toast.LENGTH_SHORT).show();
return ;
}
if(message.length()>0){
//在这里发送信息
byte[] send = message.getBytes();
mBlueToothChatService.write(send);
//重置清空
mOutString.setLength(0);
mEdit.setText(mOutString);
}
}
/**
* 监听编辑器的结果
*/
private TextView.OnEditorActionListener mWriteLisentner = new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView view, int actionId, KeyEvent event) {
// TODO Auto-generated method stub
//如果结果为空，提示
if(actionId == EditorInfo.IME_NULL && event.getAction() == KeyEvent.ACTION_UP){
String message = view.getText().toString();
sendMessage(message);
}
return true;
}
};
//通过ActionBar显示
private final void setStatus(int resId){
final ActionBar actionBar = getActionBar();
actionBar.setSubtitle(resId);
}
public final void setStatus(CharSequence subTitle){
final ActionBar actionBar = getActionBar();
actionBar.setSubtitle(subTitle);
}
//handler处理机制
private Handler handler = new Handler(){
@Override
public void handleMessage(Message msg){
switch(msg.what){
case MESSAGE_STATE_CHANGE:
switch(msg.arg1){
case BlueToothChatService.STATE_CONNECTED:
setStatus( "connected to "+mConnectedServiceName);
mConversationAdapter.clear();
break;
case BlueToothChatService.STATE_CONNECTING:
setStatus(R.string.title_connecting);
break;
case BlueToothChatService.STATE_LISTEN:
case BlueToothChatService.STATE_NONE:
setStatus(R.string.title_not_connected);
break;
}
break;
case MESSAGE_WRITE:
byte[] writebuf = (byte[]) msg.obj;
String writemessage = new String(writebuf);
mConversationAdapter.add("Me: "+writemessage);
break;
case MESSAGE_READ:
byte[] readbuf = (byte[])msg.obj;
String readmessage = new String(readbuf, 0, msg.arg1);
mConversationAdapter.add(mConnectedServiceName+": "+readmessage);
break;
case MESSAGE_TOAST:
//这个好像没用到
Toast.makeText(getApplicationContext(), msg.getData().getString(TOAST), Toast.LENGTH_SHORT).show();
break;
case MESSAGE_DEVICE_NAME:
//保存链接设备的名称
mConnectedServiceName = msg.getData().getString(DEVICE_NAME);
Toast.makeText(getApplicationContext(), "connect to "+mConnectedServiceName, Toast.LENGTH_SHORT).show();
break;
}
}
};
//请求码的处理
@Override
public void onActivityResult(int requestCode,int resultCode,Intent data){
//通过请求码来判断是否与结果码一样，然后做处理
switch(requestCode){
//请求成功则链接设备
case REQUEST_CONNECT_DEVICE:
if(resultCode == Activity.RESULT_OK){
connectDevice(data);
}
break;
case REQUEST_ENABLE_BT:
if(resultCode == Activity.RESULT_OK){
//设备可用，进入setupChat()
setupChat();
}else{
Toast.makeText(getApplicationContext(), R.string.bt_not_enabled_leaving, Toast.LENGTH_SHORT).show();
finish();
}
}
}
/**
* 连接设备
* @param data
*/
public void connectDevice(Intent data) {
// TODO Auto-generated method stub
//获取Mac地址
String address = data.getExtras().
getString(DeviceListActivity.EXTRA_DEVICE_ADDRESS);
//通过地址获取设备
BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address);
//然后连接
mBlueToothChatService.connect(device);
}
@Override
public boolean onCreateOptionsMenu(Menu menu){
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.option_menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item){
Intent serverIntent =null;
switch (item.getItemId()) {
//扫描连接
case R.id.connect_scan:
serverIntent = new Intent(this,DeviceListActivity.class);
startActivityForResult(serverIntent, REQUEST_CONNECT_DEVICE);
return true;
//可发现300s内
case R.id.discoverable:
ensureDiscovery();
return true;
}
return false;
}
//设置300s可被发现
private void ensureDiscovery() {
// TODO Auto-generated method stub
if(mBluetoothAdapter.getScanMode()!=BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE){
Intent discoverableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
startActivity(discoverableIntent);
}
}
@Override
public synchronized void onPause(){
super.onPause();
}
@Override
public void onStop(){
super.onStop();
}
@Override
public void onDestroy(){
super.onDestroy();
if(mBlueToothChatService!=null){
mBlueToothChatService.stop();
}
}
}
接下来是
/**
* BlueToothChatService实现的线程开启，关闭，管理以及连接
* @author micro
*
*/
public class BlueToothChatService {
private static int mState;
public static final String NAME = "BlueToothChat";
public static final UUID MY_UUID = UUID.fromString("0001101-0000-1000-8000-00805F9B34FB");
//
private final Handler mHandler ;
//三个线程
private ConnectThread mmConnectThread ;
private ConnectedThread mmConnectedThread;
private AcceptThread mmAcceptThread;
//表示当前的连接状态
public static final int STATE_NONE = 0;
public static final int STATE_LISTEN = 1;
public static final int STATE_CONNECTING = 2;
public static final int STATE_CONNECTED = 3;
//蓝牙适配器
private BluetoothAdapter mAdapter;
//构造器初始化
public BlueToothChatService(Context context, Handler handler) {
// TODO Auto-generated constructor stub
mAdapter = BluetoothAdapter.getDefaultAdapter();
mState = STATE_NONE;
mHandler = handler;
}
//设置当前状态
public synchronized void setState(int state){
mState = state;
//UI线程处理
mHandler.obtainMessage(BlueToothChat.MESSAGE_STATE_CHANGE, state, -1).sendToTarget();
}
/**
* Return the current connection state.
*/
public synchronized int getState() {
return mState;
}
/**
* 开启AcceptThread线程
*/
public synchronized void start() {
// TODO Auto-generated method stub
if(mmConnectedThread!=null){
mmConnectedThread.cancel();
mmConnectedThread = null;
}
if(mmConnectThread!=null){
mmConnectThread.cancel();
mmConnectThread=null;
}
//服务端线程开启
if(mmAcceptThread == null){
mmAcceptThread = new AcceptThread();
mmAcceptThread.start();
}
//设置为监听状态
setState(STATE_LISTEN);
}
/**
* 开启一个设备连接线程
* @param device
*/
public synchronized void connect(BluetoothDevice device) {
// TODO Auto-generated method stub
if(mState == STATE_CONNECTING){
if(mmConnectThread!=null){
mmConnectThread.cancel();
mmConnectThread = null;
}
}
if(mmConnectedThread!=null){
mmConnectedThread.cancel();
mmConnectedThread = null;
}
//开启
mmConnectThread = new ConnectThread(device);
mmConnectThread.start();
setState(STATE_CONNECTING);
}
/**
* 开启一个已经连接的线程来管理蓝牙连接
* Start the ConnectedThread to begin managing a Bluetooth connection
* @param socket
* @param device
* @param socketType
*/
public synchronized void connected(BluetoothSocket socket,
BluetoothDevice device, final String socketType){
if(mmConnectedThread!=null){
mmConnectedThread.cancel();
mmConnectedThread = null;
}
if(mmConnectThread!=null){
mmConnectThread.cancel();
mmConnectThread = null;
}
if(mmAcceptThread!=null){
mmAcceptThread.cancel();
mmAcceptThread = null;
}
mmConnectedThread = new ConnectedThread(socket, socketType);
mmConnectedThread.start();
// Send the name of the connected device back to the UI Activity
Message message = mHandler.obtainMessage(BlueToothChat.MESSAGE_DEVICE_NAME);
Bundle bundle = new Bundle();
bundle.putString(BlueToothChat.DEVICE_NAME, device.getName());
message.setData(bundle);
mHandler.sendMessage(message);
setState(STATE_CONNECTED);
}
/**
* 停止所有的线程
*/
public synchronized void stop() {
// TODO Auto-generated method stub
if(mmConnectedThread!=null){
mmConnectedThread.cancel();
mmConnectedThread = null;
}
if(mmConnectThread!=null){
mmConnectThread.cancel();
mmConnectThread = null;
}
if(mmAcceptThread!=null){
mmAcceptThread.cancel();
mmAcceptThread = null;
}
setState(STATE_NONE);
}
/**
* Write to the ConnectedThread in an unsynchronized manner
*
* @param out
* The bytes to write
* @see ConnectedThread#write(byte[])
*/
public void write(byte[] out) {
// Create temporary object
ConnectedThread r;
// Synchronize a copy of the ConnectedThread
synchronized (this) {
if (mState != STATE_CONNECTED)
return;
r = mmConnectedThread;
}
// Perform the write unsynchronized
//线程调用写入方法
r.write(out);
}
/**
* failed处理
* @author micro
*
*/
public void connectionFailed(){
Message msg = mHandler.obtainMessage(BlueToothChat.MESSAGE_TOAST);
Bundle bundle = new Bundle();
bundle.putString(BlueToothChat.TOAST, "Device connection failed to connect");
msg.setData(bundle);
mHandler.sendMessage(msg);
//重启对Socket的监听线程，即服务端的线程
BlueToothChatService.this.start();
}
/**
*
* @author micro
*
*/
public void connectionLost(){
Message msg = mHandler.obtainMessage(BlueToothChat.MESSAGE_TOAST);
Bundle bundle = new Bundle();
bundle.putString(BlueToothChat.TOAST, "Device connection was lost");
msg.setData(bundle);
mHandler.sendMessage(msg);
//重启对Socket的监听线程，即服务端的线程
BlueToothChatService.this.start();
}
//ServerSocket
private class AcceptThread extends Thread{
private final BluetoothServerSocket serverSocket;
private String socketType;
public AcceptThread(){
BluetoothServerSocket temp =null;
try {
temp = mAdapter.
listenUsingRfcommWithServiceRecord(NAME, MY_UUID);
} catch (Exception e) {
// TODO: handle exception
Log.e("listen Thread", "failed to get the temp thread");
}
serverSocket = temp;
}
@Override
public void run(){
setName("AcceptThread" + socketType);
BluetoothSocket socket = null;
//如果设备没有连接
while(mState!=STATE_CONNECTED){
try {
socket = serverSocket.accept();
Log.e("success", "success");
} catch (IOException e) {
// TODO Auto-generated catch block
Log.e("socket", "couldn‘t accept the socket sending");
break;
}
//如果Socket.accpt()成功
if(socket!=null){
//异步线程加载
synchronized (BlueToothChatService.this) {
switch(mState){
case STATE_LISTEN:
case STATE_CONNECTING:
Log.e("connectting or Listen", "start");
connected(socket,socket.getRemoteDevice(),socketType);
Log.e("connectting or Listen", "success");
break;
//None或者连接上的时候关闭socket
case STATE_NONE:
case STATE_CONNECTED:
try {
socket.close();
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
break;
}
}
}
}
}
public void cancel(){
try {
serverSocket.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
//连接线程connectThread，用于连接
private class ConnectThread extends Thread{
private BluetoothSocket mmSocket;
private BluetoothDevice mmDevice;
private String mSocketTye;
public ConnectThread(BluetoothDevice device){
mmDevice = device;
BluetoothSocket temp = null;
try {
temp = device.createRfcommSocketToServiceRecord(MY_UUID);
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
mmSocket = temp;
}
@Override
public void run(){
setName("ConnectThread"+mSocketTye);
//关闭扫描发现,否则会影响socket之间的连接
mAdapter.cancelDiscovery();
try {
Log.e("mmSocket", "mmSocket.connect()");
mmSocket.connect();
Log.e("mmSocket", "mmSocket.connect success");
} catch (Exception e) {
// TODO: handle exception
try {
mmSocket.close();
} catch (Exception e2) {
// TODO: handle exception
}
//连接失败
connectionFailed();
return;
}
//重置
synchronized (BlueToothChatService.this) {
mmConnectThread = null;
}
//已连接的线程Start the ConnectedThread to begin managing a Bluetooth connection
connected(mmSocket,mmDevice,mSocketTye);
}
public void cancel(){
try {
mmSocket.close();
} catch (Exception e) {
// TODO: handle exception
}
}
}
//这是一个在两个设备之间进行数据交换的线程，前提是已经连接上
private class ConnectedThread extends Thread{
private BluetoothSocket mmSocket ;
private InputStream mmInput ;
private OutputStream mmOuput ;
public ConnectedThread(BluetoothSocket socket,String socketType){
mmSocket = socket;
InputStream tmpInput = null;
OutputStream tmpOutput = null;
try {
tmpInput = socket.getInputStream();
tmpOutput = socket.getOutputStream();
} catch (Exception e) {
// TODO: handle exception
}
mmInput = tmpInput;
mmOuput = tmpOutput;
}
@Override
public void run(){
byte[] buff = new byte[1024];
int bytes;
while (true) {
try {
//读取
bytes = mmInput.read(buff);
//发送到UI线程处理
mHandler.obtainMessage(BlueToothChat.MESSAGE_READ,
bytes, -1, buff).sendToTarget();
} catch (IOException e) {
// TODO Auto-generated catch block
connectionLost();
BlueToothChatService.this.start();
break;
}
}
}
//写入
public void write(byte[] buff){
try {
mmOuput.write(buff);
mHandler.obtainMessage(BlueToothChat.MESSAGE_WRITE,
-1, -1, buff).sendToTarget();
} catch (Exception e) {
// TODO: handle exception
}
}
public void cancel(){
try {
mmSocket.close();
} catch (Exception e) {
// TODO: handle exception
}
}
}
}
/*关于客户端和服务端：
首先每一部设备都有服务线程和连接线程，当一部设备（A）对另一部设备（B）发起连接的时候，那么A将作为客户端，而B作为服务端，B的服务端线程的serverSocket将不断监听来自客户端的socket
即就是：socket = serverSocket.accept();
这个实现之后，才能实现彼此的聊天数据线程的连接和交换*/
接下来实现的是：
已配对列表和发现新设备的列表和开启300s蓝牙可被发现的功能
/**
* This Activity appears as a dialog. It lists any paired devices and devices
* detected in the area after discovery. When a device is chosen by the user,
* the MAC address of the device is sent back to the parent Activity in the
* result Intent.
* 这个活动将以dialog的形式显示，主要通过主题设置实现
* 包含的功能有：已配对的设备列表和发现的设备列表
* 当选择任何一个选项的时候，将返回一些信息给BlueToothChat
*
*/
public class DeviceListActivity extends Activity {
public static final String EXTRA_DEVICE_ADDRESS = "device_name";
//蓝牙必备
private BluetoothAdapter mBtAdapter;
private ArrayAdapter<String> mPairDeviceArrayAdapter; //已配对的适配器
private ArrayAdapter<String> mNewDevicesArrayAdapter; //发现的新设备适配器
@Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.device_list);
Button scanBtn = (Button)findViewById(R.id.button_scan);
scanBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
//点击之后开始扫描发现，按钮隐藏不可见
// TODO Auto-generated method stub
doDiscovery();
v.setVisibility(View.GONE);
}
});
//初始化适配器
mPairDeviceArrayAdapter = new ArrayAdapter<String>(this, R.layout.device_name);
mNewDevicesArrayAdapter = new ArrayAdapter<String>(this, R.layout.device_name);
ListView pairedList = (ListView)findViewById(R.id.paired_devices);
ListView newList = (ListView)findViewById(R.id.new_devices);
pairedList.setAdapter(mPairDeviceArrayAdapter);
newList.setAdapter(mNewDevicesArrayAdapter);
pairedList.setOnItemClickListener(mDeviceClickListener);
newList.setOnItemClickListener(mDeviceClickListener);
//注册广播及状态
IntentFilter intentFilter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
this.registerReceiver(reciver, intentFilter);
intentFilter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
this.registerReceiver(reciver, intentFilter);
//
mBtAdapter = BluetoothAdapter.getDefaultAdapter();
Set<BluetoothDevice> pairedDevices = mBtAdapter.getBondedDevices();
if(pairedDevices.size()>0){
findViewById(R.id.title_paired_devices).setVisibility(View.VISIBLE);
for(BluetoothDevice device:pairedDevices){
mPairDeviceArrayAdapter.add(device.getName()+"\n"+device.getAddress());
}
}else{
String noDevice = getResources().getText(R.string.none_paired).toString();
mPairDeviceArrayAdapter.add(noDevice);
}
}
@Override
public void onDestroy(){
super.onDestroy();
if(mBtAdapter!=null){
mBtAdapter.cancelDiscovery();
}
this.unregisterReceiver(reciver);
}
private OnItemClickListener mDeviceClickListener = new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> av, View v, int arg2,
long arg3) {
// TODO Auto-generated method stub
//停止扫描发现
mBtAdapter.cancelDiscovery();
//截取后面17位字符也就是Mac地址
String info = ((TextView)v).getText().toString();
String address = info.substring(info.length()-17);
Intent intent = new Intent();
intent.putExtra(EXTRA_DEVICE_ADDRESS, address);//返回了一个地址
setResult(RESULT_OK, intent);
finish();//关闭界面
}
};
public void doDiscovery() {
// TODO Auto-generated method stub
setProgressBarVisibility(true);
setTitle(R.string.scanning);
findViewById(R.id.title_new_devices).setVisibility(View.VISIBLE);
if(mBtAdapter.isDiscovering()){
mBtAdapter.cancelDiscovery();
}
mBtAdapter.startDiscovery(); //开始扫描发现
}
// The BroadcastReceiver that listens for discovered devices and
// changes the title when discovery is finished
//通过广播对扫描的设备做处理
private final BroadcastReceiver reciver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
//获取当前的Action即就是其状态
String action = intent.getAction();
//same and then
if(BluetoothDevice.ACTION_FOUND.equals(action)){
//获取设备对象
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
//判断该设备是否已配对
if(device.getBondState()!=BluetoothDevice.BOND_BONDED){
mNewDevicesArrayAdapter.add(device.getName()+"\n"+device.getAddress());
}
}else if(BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)){
//扫描结束
setProgressBarVisibility(false);
setTitle(R.string.select_device);
if(mNewDevicesArrayAdapter.getCount()==0){
String noDevice = getResources().getText(R.string.none_found).toString();
mNewDevicesArrayAdapter.add(noDevice);
}
}
}
};
}
权限:
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.BLUETOOTH" />以下是一些布局文件
device_list.xml：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<TextView android:id="@+id/title_paired_devices"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/title_paired_devices"
android:visibility="gone"
android:background="#666"
android:textColor="#fff"
android:paddingLeft="5dp"
/>
<ListView android:id="@+id/paired_devices"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:stackFromBottom="true"
android:layout_weight="1"
/>
<TextView android:id="@+id/title_new_devices"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/title_other_devices"
android:visibility="gone"
android:background="#666"
android:textColor="#fff"
android:paddingLeft="5dp"
/>
<ListView android:id="@+id/new_devices"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:stackFromBottom="true"
android:layout_weight="2"
/>
<Button android:id="@+id/button_scan"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/button_scan"
/>
</LinearLayout>
device_name.xml:
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="18sp"
android:padding="5dp"
/>
message.xml:
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="18sp"
android:padding="5dp"
/>
main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ListView
android:id="@+id/chat_list"
android:layout_width="match_parent"
android:layout_height="0dp"
android:stackFromBottom="true"
android:transcriptMode="alwaysScroll"
android:layout_weight="1">
</ListView>
<LinearLayout
android:layout_gravity="bottom"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<EditText
android:id="@+id/edit_text"
android:layout_height="wrap_content"
android:layout_width="0dp"
android:layout_weight="1"
/>
<Button
android:id="@+id/send_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/send"/>
</LinearLayout>
</LinearLayout>
strings.xml:
<resources>
<string name="app_name">BlueToothChat</string>
<string name="send">Send</string>
<string name="not_connected">You are not connected to a device</string>
<string name="title_connecting">connecting...</string>
<string name="title_not_connected">not connected</string>
<string name="bt_not_enabled_leaving">Bluetooth was not enabled. Leaving Bluetooth Chat.</string>
<!-- Options Menu -->
<string name="connect">Connect a device</string>
<string name="discoverable">Make discoverable</string>
<!-- DeviceListActivity -->
<string name="scanning">scanning for devices...</string>
<string name="select_device">select a device to connect</string>
<string name="none_paired">No devices have been paired</string>
<string name="none_found">No devices found</string>
<string name="title_paired_devices">Paired Devices</string>
<string name="title_other_devices">Other Available Devices</string>
<string name="button_scan">Scan for devices</string>
</resources>
option_menu.xml:
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@+id/connect_scan"
android:icon="@android:drawable/ic_menu_search"
android:title="@string/connect"
android:showAsAction="ifRoom|withText" />
<item android:id="@+id/discoverable"
android:icon="@android:drawable/ic_menu_mylocation"
android:title="@string/discoverable"
android:showAsAction="ifRoom|withText" />
</menu>
AndroidManifest.xml的Apllication部分:
<application
android:allowBackup="true"
android:icon="@drawable/app_icon"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity android:name=".BlueToothChat"
android:configChanges="orientation|keyboardHidden">
<intent-filter >
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<activity
android:name="DeviceListActivity"
android:label="@string/select_device"
android:theme="@android:style/Theme.Holo.Dialog"
android:configChanges="orientation|keyboardHidden"></activity>
</application>时间： 2024-11-11 04:18:40