Android的蓝牙编程例

package com.testBlueTooth; import java.io.IOException; import java.util.ArrayList; import java.util.List; import java.util.UUID; import android.app.Activity; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.bluetooth.BluetoothSocket; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.ListView; import android.widget.Toast; import android.widget.ToggleButton; public class testBlueTooth extends Activity { static final String SPP_UUID = "00001101-0000-1000-8000-00805F9B34FB"; Button btnSearch, btnDis, btnExit; ToggleButton tbtnSwitch; ListView lvBTDevices; ArrayAdapter<String> adtDevices; List<String> lstDevices = new ArrayList<String>(); BluetoothAdapter btAdapt; public static BluetoothSocket btSocket; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // Button 设置 btnSearch = (Button) this.findViewById(R.id.btnSearch); btnSearch.setOnClickListener(new ClickEvent()); btnExit = (Button) this.findViewById(R.id.btnExit); btnExit.setOnClickListener(new ClickEvent()); btnDis = (Button) this.findViewById(R.id.btnDis); btnDis.setOnClickListener(new ClickEvent()); // ToogleButton设置 tbtnSwitch = (ToggleButton) this.findViewById(R.id.tbtnSwitch); tbtnSwitch.setOnClickListener(new ClickEvent()); // ListView及其数据源 适配器 lvBTDevices = (ListView) this.findViewById(R.id.lvDevices); adtDevices = new ArrayAdapter<String>(testBlueTooth.this, android.R.layout.simple_list_item_1, lstDevices); lvBTDevices.setAdapter(adtDevices); lvBTDevices.setOnItemClickListener(new ItemClickEvent()); btAdapt = BluetoothAdapter.getDefaultAdapter();// 初始化本机蓝牙功能 if (btAdapt.getState() == BluetoothAdapter.STATE_OFF)// 读取蓝牙状态并显示 tbtnSwitch.setChecked(false); else if (btAdapt.getState() == BluetoothAdapter.STATE_ON) tbtnSwitch.setChecked(true); // 注册Receiver来获取蓝牙设备相关的结果 IntentFilter intent = new IntentFilter(); intent.addAction(BluetoothDevice.ACTION_FOUND);// 用BroadcastReceiver来取得搜索结果 intent.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED); intent.addAction(BluetoothAdapter.ACTION_SCAN_MODE_CHANGED); intent.addAction(BluetoothAdapter.ACTION_STATE_CHANGED); registerReceiver(searchDevices, intent); } private BroadcastReceiver searchDevices = new BroadcastReceiver() { public void onReceive(Context context, Intent intent) { String action = intent.getAction(); Bundle b = intent.getExtras(); Object[] lstName = b.keySet().toArray(); // 显示所有收到的消息及其细节 for (int i = 0; i < lstName.length; i++) { String keyName = lstName[i].toString(); Log.e(keyName, String.valueOf(b.get(keyName))); } //搜索设备时，取得设备的MAC地址 if (BluetoothDevice.ACTION_FOUND.equals(action)) { BluetoothDevice device = intent .getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); String str= device.getName() + "|" + device.getAddress(); if (lstDevices.indexOf(str) == -1)// 防止重复添加 lstDevices.add(str); // 获取设备名称和mac地址 adtDevices.notifyDataSetChanged(); } } }; @Override protected void onDestroy() { this.unregisterReceiver(searchDevices); super.onDestroy(); android.os.Process.killProcess(android.os.Process.myPid()); } class ItemClickEvent implements AdapterView.OnItemClickListener { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { btAdapt.cancelDiscovery(); String str = lstDevices.get(arg2); String[] values = str.split("\\|"); String address=values[1]; Log.e("address",values[1]); UUID uuid = UUID.fromString(SPP_UUID); BluetoothDevice btDev = btAdapt.getRemoteDevice(address); try { btSocket = btDev .createRfcommSocketToServiceRecord(uuid); btSocket.connect(); //打开波形图实例 Intent intent = new Intent(); intent.setClass(testBlueTooth.this, WaveDiagram.class); startActivity(intent); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } class ClickEvent implements View.OnClickListener { @Override public void onClick(View v) { if (v == btnSearch)// 搜索蓝牙设备，在BroadcastReceiver显示结果 { if (btAdapt.getState() == BluetoothAdapter.STATE_OFF) {// 如果蓝牙还没开启 Toast.makeText(testBlueTooth.this, "请先打开蓝牙", 1000).show(); return; } setTitle("本机蓝牙地址：" + btAdapt.getAddress()); lstDevices.clear(); btAdapt.startDiscovery(); } else if (v == tbtnSwitch) {// 本机蓝牙启动/关闭 if (tbtnSwitch.isChecked() == false) btAdapt.enable(); else if (tbtnSwitch.isChecked() == true) btAdapt.disable(); } else if (v == btnDis)// 本机可以被搜索 { Intent discoverableIntent = new Intent( BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE); discoverableIntent.putExtra( BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300); startActivity(discoverableIntent); } else if (v == btnExit) { try { if (btSocket != null) btSocket.close(); } catch (IOException e) { e.printStackTrace(); } testBlueTooth.this.finish(); } } } }