Bluetooth的接收数据测试代码

package com.example.bt_server;import java.io.IOException;import java.io.InputStream;import java.lang.reflect.Method;import java.util.UUID;import android.app.Activity;import android.bluetooth.BluetoothAdapter;import android.bluetooth.BluetoothServerSocket;import android.bluetooth.BluetoothSocket;import android.os.Bundle;import android.util.Log;import android.widget.TextView;/* * 注意：手机需要设置上“开放检测”才可以。 * */public class MainActivity extends Activity {public static final String PROTOCOL_SCHEME_L2CAP = "btl2cap";public static final String PROTOCOL_SCHEME_RFCOMM = "btspp";public static final String PROTOCOL_SCHEME_BT_OBEX = "btgoep";public static final String PROTOCOL_SCHEME_TCP_OBEX = "tcpobex";private static final String TAG = MainActivity.class.getSimpleName();private BluetoothAdapter _bluetooth = BluetoothAdapter.getDefaultAdapter();private long _mainThreadId = Thread.currentThread().getId();private BluetoothServerSocket _serverSocket;private boolean _serverFlag = true;private TextView log = null;private String logStr = "";private void viewDispLog(final String str){if(Thread.currentThread().getId() == _mainThreadId){logStr += "m:"+str;log.setText(logStr);}else{runOnUiThread(new Runnable() {@Overridepublic void run() {logStr += "c:"+str;log.setText(logStr);}});}}@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);log = (TextView)findViewById(R.id.log);if(!_bluetooth.isEnabled())_bluetooth.enable();while(!_bluetooth.isEnabled()) {Log.d(TAG, "_bluetooth.isEnabled()");try {Thread.sleep(1000);} catch (InterruptedException e) {e.printStackTrace();}}viewDispLog("_bluetooth enable\n");setDiscoverableTimeout(0);viewDispLog("_discovery start\n");_bluetooth.startDiscovery();viewDispLog("_server thread start\n");_serverThread.start();}protected void onDestroy() {super.onDestroy();shutdownThread();}private void shutdownThread() {_serverFlag = false;if(_serverThread != null){_serverThread.interrupt();}if(_serverSocket != null){try {_serverSocket.close();} catch (IOException e1) {e1.printStackTrace();}_serverSocket = null;}_bluetooth.disable();}private Thread _serverThread = new Thread() {public void run() {try {_serverSocket = _bluetooth.listenUsingRfcommWithServiceRecord(PROTOCOL_SCHEME_RFCOMM,UUID.fromString("a60f35f0-b93a-11de-8a39-08002009c666"));while(_serverFlag){viewDispLog("---accept---\n");BluetoothSocket socket = _serverSocket.accept();if (socket != null) {viewDispLog("---input data---\n");InputStream inputStream = socket.getInputStream();int read = -1;final byte[] bytes = new byte[2048];read = inputStream.read(bytes);if(read > -1){String s = new String(bytes,0,read);viewDispLog("recv#\n"+s+"\n");}inputStream.close();}socket.close();}} catch (IOException e) {e.printStackTrace();}if(_serverSocket != null){try {_serverSocket.close();} catch (IOException e1) {e1.printStackTrace();}_serverSocket = null;}}};public void setDiscoverableTimeout(int timeout) {BluetoothAdapter adapter=BluetoothAdapter.getDefaultAdapter();try {Method setDiscoverableTimeout = BluetoothAdapter.class.getMethod("setDiscoverableTimeout", int.class);setDiscoverableTimeout.setAccessible(true);Method setScanMode =BluetoothAdapter.class.getMethod("setScanMode", int.class,int.class);setScanMode.setAccessible(true);setDiscoverableTimeout.invoke(adapter, timeout);setScanMode.invoke(adapter, BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE,timeout);} catch (Exception e) {e.printStackTrace();}}}