Android Studio实验作业之蓝牙聊天功能
作者：互联网
今儿给大伙讲个笑话
有一天，我写了一个项目（依托四方大佬救济的那种写）
整完了之后跑起来是这样
经过各种调试之后，运行了之后是这样
我就纳闷，难道是哪里出错了？
没道理啊？
后来找到了大佬，大佬跑了一遍，没问题，，，
后来大佬一机灵，在真机上面跑了一遍
成了。。。
所以这个模块是没办法在虚拟机上面跑了，大伙有兴趣的可以下载之后在手机上面跑一跑（对，我真的没手机。。。家里穷。。。用的用的都是iPhone7及以下版本 别喷我不爱国 真和爱国没什么关系）
好了 废话到这里就结束了
下面说说项目吧
首先是必不可少是权限申请
这里百度了不少，肯定不是最精炼的，但差不多是最全的了，能用的不能用的全部放上去了
src/main/AndroidManifest.xml 中插入mainfest标签下
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.BLUETOOTH_PRIVILEGED" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
然后就是src/main/java/cn/com/lenew/bluetooth/activity/MainActivity.java
没有别的，主要还是一个对各个类的调用，控制显示之类的
仅附上部分代码
public void onClick(View view){
showToast("开始扫描");
list.clear();
list.addAll(BluetoothUtils.getInstance(mContext).getAvailableDevices());
adapter.notifyDataSetChanged();
BluetoothUtils.getInstance(this).scanDevices();
}
private void initReceiver() {
IntentFilter filter = new IntentFilter();
filter.addAction(BluetoothDevice.ACTION_FOUND);
filter.addAction(BluetoothAdapter.ACTION_DISCOVERY_STARTED);
filter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
filter.addAction(BluetoothMessage.ACTION_INIT_COMPLETE);
filter.addAction(BluetoothMessage.ACTION_CONNECTED_SERVER);
filter.addAction(BluetoothMessage.ACTION_CONNECT_ERROR);
registerReceiver(receiver, filter);
}
BroadcastReceiver receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
switch (intent.getAction()){
case BluetoothDevice.ACTION_FOUND:
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
for(int i=0;i<list.size();i++){
if(device.getAddress()==null || device.getAddress().equals(list.get(i).getAddress())){
return;
}
}
list.add(device);
adapter.notifyDataSetChanged();
break;
case BluetoothAdapter.ACTION_DISCOVERY_STARTED:
// showToast("开始扫描");
break;
case BluetoothAdapter.ACTION_DISCOVERY_FINISHED:
// showToast("扫描完成");
break;
case BluetoothMessage.ACTION_INIT_COMPLETE:
ProgressUtils.dismissProgress();
break;
case BluetoothMessage.ACTION_CONNECTED_SERVER:
ProgressUtils.dismissProgress();
String remoteAddress = intent.getStringExtra(BluetoothUtils.EXTRA_REMOTE_ADDRESS);
openChatRoom(remoteAddress);
break;
case BluetoothMessage.ACTION_CONNECT_ERROR:
ProgressUtils.dismissProgress();
showToast(intent.getStringExtra(BluetoothUtils.EXTRA_ERROR_MSG));
break;
}
}
};
private void openChatRoom(String remoteAddress) {
Intent intent = new Intent(mContext,ChatActivity.class);
intent.putExtra("remoteAddress",remoteAddress);
startActivity(intent);
}
随后就是蓝牙通信的协议问题，这个相对来说就比较复杂了
这里说一下 ，我使用的是BluetoothSocket和BluetoothServerSocket
src/main/java/cn/com/lenew/bluetooth/utils/BluetoothUtils.java
/**
* Created by xuhuan 0007.
*/
public class BluetoothUtils {
private static final String PROTOCOL_SCHEME_RFCOMM = "server_name";
private static final String UUIDString = "00001101-0000-1000-8000-00805F9B34FB";
public static final String EXTRA_REMOTE_ADDRESS = "remoteAddress";
public static final String EXTRA_ERROR_MSG = "error_msg";
private static BluetoothUtils instance;
/** 已连接到服务器 */
private static final int CONNECTED_SERVER = 1;
/** 连接服务器出错 */
private static final int CONNECT_SERVER_ERROR = CONNECTED_SERVER + 1;
/** 正在连接服务器 */
private static final int IS_CONNECTING_SERVER = CONNECT_SERVER_ERROR + 1;
/** 等待客户端连接 */
private static final int WAITING_FOR_CLIENT = IS_CONNECTING_SERVER + 1;
/** 已连接客户端 */
private static final int CONNECTED_CLIENT = WAITING_FOR_CLIENT + 1;
/** 连接客户端出错 */
private static final int CONNECT_CLIENT_ERROR = CONNECTED_CLIENT + 1;
private BluetoothAdapter bluetoothAdapter;
private Context mContext;
/**
* socket集合
*/
private HashMap<String, BluetoothSocket> socketMap = new HashMap<>();
/**
* 远程设备集合
*/
// private HashMap<String, BluetoothDevice> remoteDeviceMap = new HashMap<>();
private HashMap<String,ReadThread> readThreadMap = new HashMap<>();
private BluetoothServerSocket mServerSocket;
private Handler linkDetectedHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
if(msg.obj instanceof BluetoothMessage){
BluetoothMessage message = (BluetoothMessage) msg.obj;
Intent intent = new Intent();
intent.setAction(BluetoothMessage.ACTION_RECEIVED_NEW_MSG);
intent.putExtra("msg", message);
mContext.sendOrderedBroadcast(intent, null);
DBManager.save(message);
// mContext.sendBroadcast(intent);
}else {
Intent intent = new Intent();
switch (msg.what){
case WAITING_FOR_CLIENT:
//初始化服务器完成
intent.setAction(BluetoothMessage.ACTION_INIT_COMPLETE);
break;
case IS_CONNECTING_SERVER:
//正在连接服务器
break;
case CONNECTED_CLIENT:
//有客户端连接到自己
break;
case CONNECT_CLIENT_ERROR:
//连接客户端出错
break;
case CONNECT_SERVER_ERROR:
//连接服务器出错
intent.putExtra(EXTRA_ERROR_MSG,(String)msg.obj);
intent.setAction(BluetoothMessage.ACTION_CONNECT_ERROR);
break;
case CONNECTED_SERVER:
intent.putExtra(EXTRA_REMOTE_ADDRESS,(String)msg.obj);
intent.setAction(BluetoothMessage.ACTION_CONNECTED_SERVER);
break;
}
mContext.sendBroadcast(intent);
// String msgContent = (String) msg.obj;
// Toast.makeText(mContext, msgContent, Toast.LENGTH_SHORT).show();
}
}
};
private BluetoothUtils(Context context) {
mContext = context;
if (context == null) {
throw new RuntimeException("Parameter context can not be null !");
}
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
}
public static BluetoothUtils getInstance(Context context) {
if (instance == null) {
instance = new BluetoothUtils(context);
}
return instance;
}
public void enableBluetooth() {
if (!bluetoothAdapter.isEnabled()) {
// Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
// intent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
// mContext.startActivity(intent);
bluetoothAdapter.enable();
}
}
public void scanDevices() {
if (!bluetoothAdapter.isEnabled()) {
enableBluetooth();
return;
}
bluetoothAdapter.startDiscovery();
startService();
}
private void startService() {
Intent serverIntent = new Intent(mContext, ServerService.class);
mContext.startService(serverIntent);
Intent clientIntent = new Intent(mContext, MessageService.class);
mContext.startService(clientIntent);
}
public boolean isEnabled() {
return bluetoothAdapter.isEnabled();
}
public ArrayList<BluetoothDevice> getAvailableDevices() {
Set<BluetoothDevice> availableDevices = bluetoothAdapter.getBondedDevices();
ArrayList availableList = new ArrayList();
for (Iterator<BluetoothDevice> iterator = availableDevices.iterator(); iterator.hasNext(); ) {
availableList.add(iterator.next());
}
return availableList;
}
public boolean isBonded(BluetoothDevice device) {
Set<BluetoothDevice> availableDevices = bluetoothAdapter.getBondedDevices();
for (Iterator<BluetoothDevice> iterator = availableDevices.iterator(); iterator.hasNext(); ) {
if (device.getAddress().equals(iterator.next().getAddress())) {
return true;
}
}
return false;
}
public boolean isDiscoverying() {
return bluetoothAdapter.isDiscovering();
}
public void cancelScan() {
bluetoothAdapter.cancelDiscovery();
}
//开启客户端
private class ClientThread extends Thread {
private String remoteAddress;
public ClientThread(String remoteAddress) {
this.remoteAddress = remoteAddress;
}
@Override
public void run() {
try {
//创建一个Socket连接：只需要服务器在注册时的UUID号
// socket = device.createRfcommSocketToServiceRecord(BluetoothProtocols.OBEX_OBJECT_PUSH_PROTOCOL_UUID);
BluetoothDevice device = bluetoothAdapter.getRemoteDevice(remoteAddress);
BluetoothSocket socket = device.createRfcommSocketToServiceRecord(UUID.fromString(UUIDString));
// socketMap.put(remoteAddress, socket);
//连接
Message msg2 = new Message();
msg2.obj = "请稍候，正在连接服务器:" + remoteAddress;
msg2.what = IS_CONNECTING_SERVER;
linkDetectedHandler.sendMessage(msg2);
socket.connect();
// socketMap.put(BluetoothMessage.bluetoothAddress, socket);
socketMap.put(remoteAddress, socket);
Message msg = new Message();
// msg.obj = "已经连接上服务端！可以发送信息。";
msg.obj = remoteAddress;
msg.what = CONNECTED_SERVER;
linkDetectedHandler.sendMessage(msg);
//启动接受数据
ReadThread mreadThread = new ReadThread(remoteAddress);
readThreadMap.put(remoteAddress,mreadThread);
mreadThread.start();
} catch (IOException e) {
e.printStackTrace();
socketMap.remove(remoteAddress);
Log.e("connect", e.getMessage(), e);
Message msg = new Message();
msg.obj = "连接服务端异常！断开连接重新试一试。"+e.getMessage();
msg.what = CONNECT_SERVER_ERROR;
linkDetectedHandler.sendMessage(msg);
// remoteDeviceMap.remove(remoteAddress);
}
}
}
//开启服务器
private class ServerThread extends Thread {
@Override
public void run() {
try {
/* 创建一个蓝牙服务器
* 参数分别：服务器名称、UUID */
mServerSocket = bluetoothAdapter.listenUsingRfcommWithServiceRecord(PROTOCOL_SCHEME_RFCOMM, UUID.fromString(UUIDString));
while (true){
Log.d("server", "wait cilent connect...");
Message msg = new Message();
msg.obj = "请稍候，正在等待客户端的连接...";
msg.what = WAITING_FOR_CLIENT;
linkDetectedHandler.sendMessage(msg);
/* 接受客户端的连接请求 */
BluetoothSocket socket = mServerSocket.accept();
socketMap.put(socket.getRemoteDevice().getAddress(), socket);
// remoteDeviceMap.put(socket.getRemoteDevice().getAddress(),socket.getRemoteDevice());
Log.d("server", "accept success !");
Message msg2 = new Message();
String info = "客户端已经连接上！可以发送信息。";
msg2.obj = info;
msg.what = CONNECTED_CLIENT;
linkDetectedHandler.sendMessage(msg2);
//启动接受数据
ReadThread mreadThread = new ReadThread(socket.getRemoteDevice().getAddress());
readThreadMap.put(socket.getRemoteDevice().getAddress(),mreadThread);
mreadThread.start();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
/* 停止服务器 */
//略
/* 停止客户端连接 */
//略
//发送数据
//略
//读取数据
//略
当然 这个模块到这里肯定是不算结束的，还有部分类，我就不一一展示了，末尾我会附上源代码
接下来是通信服务：
src/main/java/cn/com/lenew/bluetooth/service/MessageService.java：
/**
* Created by xuhuan 0010.
*/
public class MessageService extends Service{
private Context mContext;
private NotificationManager notificationManager;
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onCreate() {
super.onCreate();
mContext = this;
notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
IntentFilter intentFilter = new IntentFilter(BluetoothMessage.ACTION_RECEIVED_NEW_MSG);
intentFilter.setPriority(990);
registerReceiver(msgReceiver, intentFilter);
}
@Override
public void onDestroy() {
super.onDestroy();
unregisterReceiver(msgReceiver);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
return Service.START_STICKY;
}
public void sendNotification(String content,String remoteAddress,BluetoothMessage message){
Intent chatIntent = new Intent(mContext, ChatActivity.class);
chatIntent.putExtra("remoteAddress",remoteAddress);
chatIntent.putExtra("lastmsg",message);
PendingIntent pendingIntent = PendingIntent.getActivity(mContext, 0, chatIntent, PendingIntent.FLAG_UPDATE_CURRENT);
Notification notification = new Notification.Builder(mContext)
.setContentText(content)
.setContentIntent(pendingIntent)
.setSmallIcon(R.mipmap.icon_logo)
.setAutoCancel(true)
.setContentTitle("您有一条新消息")
.build();
notification.defaults = Notification.DEFAULT_SOUND;
notificationManager.notify(1,notification);
}
BroadcastReceiver msgReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
BluetoothMessage bluetoothMessage = (BluetoothMessage) intent.getSerializableExtra("msg");
bluetoothMessage.setIsMe(0);
String remoteAddress = bluetoothMessage.getSender();
String msgContent;
if(bluetoothMessage.getContent().length()>10){
msgContent = bluetoothMessage.getContent().substring(0,10);
}else {
msgContent = bluetoothMessage.getContent();
}
String msg = bluetoothMessage.getSenderNick()+":"+msgContent;
sendNotification(msg,remoteAddress,bluetoothMessage);
}
};
}
还有数据服务：
src/main/java/cn/com/lenew/bluetooth/database/DBManager.java：
/**
* Created by xuhuan .
*/
public class DBManager {
private static DbManager.DaoConfig daoConfig;
public static DbManager.DaoConfig getDaoConfig(){
if(daoConfig==null){
daoConfig = new DbManager.DaoConfig();
daoConfig.setDbVersion(2);
}
return daoConfig;
}
public static void save(Object obj){
try {
x.getDb(DBManager.getDaoConfig()).save(obj);
} catch (DbException e) {
e.printStackTrace();
}
}
public static List<BluetoothMessage> findAll(String remoteAddress) {
try {
Selector<BluetoothMessage> selector = x.getDb(getDaoConfig()).selector(BluetoothMessage.class);
selector.where("sender","=",remoteAddress);
selector.or("receiver","=",remoteAddress);
return selector.findAll();
} catch (DbException e) {
e.printStackTrace();
}
return null;
}
}
差不多就是以上了，至于布局还有其他的，这里也就不继续展开了 需要的可以自行下载，当然 先提前声明，代码绝对不是最简单或者说完美的，很多地方我也是在网上down的，有些部分或许根本没有用到。反正是修修补补的，大概差不多就是这么个原理。
那么最后 附上码云地址：项目源码
标签：remoteAddress,蓝牙,private,Studio,msg,new,Android,intent,public 来源： https://blog.csdn.net/qq_43739523/article/details/106472864