| public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private TextView tv_msg;
private Button bt_search, bt_send;
private BluetoothSocket BTSocket;
private BluetoothAdapter BTAdapter;
private BluetoothDevice device;
private StringBuilder sb;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bt_search = (Button) findViewById(R.id.bt_search);
bt_send = (Button) findViewById(R.id.bt_send);
tv_msg = (TextView) findViewById(R.id.tv_msg);
bt_search.setOnClickListener(this);
bt_send.setOnClickListener(this);
sb = new StringBuilder();
show("客户端:检查BT");
checkBT(this);
show("客户端:注册接收者");
registerBTReceiver();
}
/**
* UI文本输出
*
* @param msg
*/
public void show(String msg) {
sb.append(msg + "\n");
runOnUiThread(new Runnable() {
@Override
public void run() {
tv_msg.setText(sb.toString());
}
});
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.bt_search:
show("客户端:开始寻找设备");
BTAdapter.startDiscovery();
break;
case R.id.bt_send:
sendMessage();
break;
}
}
/**
* 检查蓝牙
*/
public void checkBT(Context context) {
BTAdapter = BluetoothAdapter.getDefaultAdapter();
if (BTAdapter != null) {
if (!BTAdapter.isEnabled()) {
Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
// 设置蓝牙可见性，最多300秒
intent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
context.startActivity(intent);
}
} else {
System.out.println("本地设备驱动异常!");
}
}
/**
* 开启客户端
*/
private class clientThread extends Thread {
public void run() {
try {
//创建一个Socket连接：只需要服务器在注册时的UUID号
BTSocket = device.createRfcommSocketToServiceRecord(UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));
//连接
show("客户端:开始连接...");
BTSocket.connect();
show("客户端:连接成功");
//启动接受数据
show("客户端:启动接受数据");
readThread mreadThread = new readThread();
mreadThread.start();
} catch (IOException e) {
show("客户端:连接服务端异常！断开连接重新试一试");
e.printStackTrace();
}
}
}
/**
* 读取数据
*/
private class readThread extends Thread {
public void run() {
byte[] buffer = new byte[1024];
int bytes;
InputStream is = null;
try {
is = BTSocket.getInputStream();
show("客户端:获得输入流");
} catch (IOException e1) {
e1.printStackTrace();
}
while (true) {
try {
if ((bytes = is.read(buffer)) > 0) {
byte[] buf_data = new byte[bytes];
for (int i = 0; i < bytes; i++) {
buf_data[i] = buffer[i];
}
String s = new String(buf_data);
show("客户端:读取数据了" + s);
}
} catch (IOException e) {
try {
is.close();
} catch (IOException e1) {
e1.printStackTrace();
}
break;
}
}
}
}
/**
* 发送数据
*/
public void sendMessage() {
if (BTSocket == null) {
Toast.makeText(this, "没有连接", Toast.LENGTH_SHORT).show();
return;
}
try {
OutputStream os = BTSocket.getOutputStream();
os.write("我爱你dahsid132456@#%￥*".getBytes());
os.flush();
show("客户端:发送信息成功");
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 注册广播
*/
public void registerBTReceiver() {
// 设置广播信息过滤
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(BluetoothDevice.ACTION_FOUND);
intentFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_STARTED);
intentFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
intentFilter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
intentFilter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED);
// 注册广播接收器，接收并处理搜索结果
registerReceiver(BTReceive, intentFilter);
}
/**
* 注销广播
*/
public void unregisterBTReceiver() {
unregisterReceiver(BTReceive);
}
@Override
protected void onDestroy() {
super.onDestroy();
unregisterBTReceiver();
}
/**
* 广播接收者
*/
private BroadcastReceiver BTReceive = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
show("客户端:找到的BT名:" + device.getName());
// 如果查找到的设备符合要连接的设备，处理
if (device.getName().equalsIgnoreCase("xu")) {
show("客户端:配对xu蓝牙:");
// 搜索蓝牙设备的过程占用资源比较多，一旦找到需要连接的设备后需要及时关闭搜索
BTAdapter.cancelDiscovery();
// 获取蓝牙设备的连接状态
int connectState = device.getBondState();
switch (connectState) {
// 未配对
case BluetoothDevice.BOND_NONE:
show("客户端:开始配对:");
try {
Method createBondMethod = BluetoothDevice.class.getMethod("createBond");
createBondMethod.invoke(device);
} catch (Exception e) {
e.printStackTrace();
}
break;
// 已配对
case BluetoothDevice.BOND_BONDED:
try {
show("客户端:开始连接:");
clientThread clientConnectThread = new clientThread();
clientConnectThread.start();
} catch (Exception e) {
e.printStackTrace();
}
break;
}
}
} else if (BluetoothDevice.ACTION_BOND_STATE_CHANGED.equals(action)) {
// 获取蓝牙设备的连接状态
int connectState = device.getBondState();
// 已配对
if (connectState == BluetoothDevice.BOND_BONDED) {
try {
show("客户端:开始连接:");
clientThread clientConnectThread = new clientThread();
clientConnectThread.start();
} catch (Exception e) {
e.printStackTrace();
}
}
}
show(action);
}
};
}
|