Android 蓝牙发现设备，建立连接，显示谱线

package com.gch.BTSpectrumForm; /*************************************************************/ /* Project Shmimn * Mobile Health-care Device * Gong Chunhui * 2011-4-24 16:35:21 */ /*************************************************************/ import java.io.IOException; import java.util.UUID; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.os.Bundle; import android.content.Intent; import android.content.Context; import android.content.BroadcastReceiver; import android.content.IntentFilter; import android.widget.AdapterView; import android.widget.Button; import android.widget.ListView; import android.widget.ArrayAdapter; import android.widget.ToggleButton; import android.widget.Toast; import android.view.View; import android.view.View.OnClickListener; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.bluetooth.BluetoothSocket; public class BTConnectActivity extends Activity { /** Called when the activity is first created. */ public static final int REQUEST_ENABLE_BT = 8807; public BroadcastReceiver mBTReceiver; public static BluetoothSocket mBTSocket; public BluetoothAdapter mBTAdapter; private Button btnSearchDevices; private ToggleButton tBtnBTSwitch; private BluetoothDevice mBTDevice; private ArrayAdapter<String> adtDvcs; private List<String> lstDvcsStr = new ArrayList<String>(); private ListView lvDevicesList; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.btconnect); // Init Bluetooth Adapter mBTAdapter = BluetoothAdapter.getDefaultAdapter(); if (mBTAdapter == null) { Toast.makeText(BTConnectActivity.this, " No devices supporting Bluetooth! ", Toast.LENGTH_SHORT).show(); this.finish(); } // Set up BroadCast Receiver mBTReceiver = new BroadcastReceiver() { public void onReceive(Context context,Intent intent) { String act = intent.getAction(); // To see whether the action is that already found devices if(act.equals(BluetoothDevice.ACTION_FOUND)) { // If found one device, get the device object BluetoothDevice tmpDvc = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); // Put the name & address into a string String tmpDvcStr = tmpDvc.getName()+"|"+tmpDvc.getAddress(); if (lstDvcsStr.indexOf(tmpDvcStr)==-1) { // Avoid duplicate add devices lstDvcsStr.add(tmpDvcStr); adtDvcs.notifyDataSetChanged(); Toast.makeText(BTConnectActivity.this, "Find a new device!", Toast.LENGTH_SHORT).show(); } } if(act.equals(BluetoothAdapter.ACTION_DISCOVERY_FINISHED)) { Toast.makeText(BTConnectActivity.this, " Searching Complete!", Toast.LENGTH_SHORT).show(); } if (act.equals(BluetoothAdapter.ACTION_DISCOVERY_STARTED)) { Toast.makeText(BTConnectActivity.this, "Begin Searching Devices", Toast.LENGTH_SHORT).show(); } } }; //Register the broadcastReceiver IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND); registerReceiver(mBTReceiver,filter); filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_STARTED); registerReceiver(mBTReceiver,filter); filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED); registerReceiver(mBTReceiver,filter); // Init Buttons btnSearchDevices = (Button)findViewById(R.id.btnSearchDevice); tBtnBTSwitch = (ToggleButton)findViewById(R.id.tBtnBTSwitch); lvDevicesList = (ListView)findViewById(R.id.lvDevicesList); if(mBTAdapter.getState()==BluetoothAdapter.STATE_OFF) tBtnBTSwitch.setChecked(false); if(mBTAdapter.getState()==BluetoothAdapter.STATE_ON) tBtnBTSwitch.setChecked(true); // ListView And Data Adapter adtDvcs = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,lstDvcsStr); lvDevicesList.setAdapter(adtDvcs); // Add Click Listeners to Buttons tBtnBTSwitch.setOnClickListener(new OnClickListener() { @Override public void onClick(View view) { // Open BT if(tBtnBTSwitch.isChecked()) { if(!mBTAdapter.isEnabled()) { //Open a new dialog to ask user whether wanna open BT Intent enabler = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(enabler,REQUEST_ENABLE_BT); } tBtnBTSwitch.setChecked(true); } // Close BT if(!tBtnBTSwitch.isChecked()) { if(mBTAdapter.isEnabled()) { mBTAdapter.disable(); Toast.makeText(BTConnectActivity.this, "BT has been closed!", Toast.LENGTH_SHORT).show(); } tBtnBTSwitch.setChecked(false); } } }); // Search Devices btnSearchDevices.setOnClickListener(new OnClickListener() { @Override public void onClick(View view) { if (mBTAdapter.isDiscovering()) { Toast.makeText(BTConnectActivity.this, "Already Searching", Toast.LENGTH_SHORT).show(); } else{ lstDvcsStr.clear(); adtDvcs.notifyDataSetChanged(); mBTDevice = null; mBTAdapter.startDiscovery(); } } }); // Create Click listener for the items on devices list lvDevicesList.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { if (mBTAdapter == null) Toast.makeText(BTConnectActivity.this, "No devices support BlueTooth", Toast.LENGTH_SHORT).show(); else { // stop searching mBTAdapter.cancelDiscovery(); // Get address of remote device String str = lstDvcsStr.get(arg2); String[] dvcValues = str.split("\\|"); String dvcAddr = dvcValues[1]; //UUID dvcUUID = UUID.randomUUID(); //00001101-0000-1000-8000-00805F9B34FB SPP protocal UUID dvcUUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"); // Set BT device mBTDevice = mBTAdapter.getRemoteDevice(dvcAddr); // Connect Device try { mBTSocket = mBTDevice.createRfcommSocketToServiceRecord(dvcUUID); mBTSocket.connect(); Intent mInt = new Intent(BTConnectActivity.this,RTMonitorActivity.class); startActivity(mInt); } catch(IOException e) { e.printStackTrace(); } } } }); } public void onActivityResult(int RequestCode, int ResultCode,Intent data){ switch(RequestCode) { case REQUEST_ENABLE_BT: if(ResultCode == RESULT_OK) { Toast.makeText(this.getApplicationContext(), "BT Launched!", Toast.LENGTH_SHORT).show(); } else if(ResultCode == RESULT_CANCELED) { Toast.makeText(this.getApplicationContext(), "Launched BT cancled!", Toast.LENGTH_SHORT).show(); } break; } } @Override protected void onDestroy() { this.unregisterReceiver(mBTReceiver); super.onDestroy(); android.os.Process.killProcess(android.os.Process.myPid()); }