android-蓝牙-<十四>

public class BluetoothDemoActivity extends Activity {
    /** Called when the activity is first created. */
    private Button  bt=null;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        bt=(Button)findViewById(R.id.bt);
        bt.setOnClickListener(new OnClickListener(
                ) {
            
            public void onClick(View v) {
                //监听“搜索配对的蓝牙”按钮
                /* 先在清单文件里添加权限
                 * 1.新建BluetoothAdapter对象
                 * 2.判断蓝牙设备是否存在
                 * 3.判断蓝牙是否打开
                 * 4.获取周围的蓝牙设备(BluetoothDriver)
                 * */
                //1.创建本地蓝牙适配器
                BluetoothAdapter  adapter=BluetoothAdapter.getDefaultAdapter();
                //2.判断是否存在蓝牙设备
                if(adapter!=null)
                {
                    //3.判断是否打开，还没打开的，用intent启动
                    if(!adapter.isEnabled())
                    {
                        Intent intent= new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
                        startActivityForResult(intent, 0);;
                        
                    }
                    //4.查找已经配对的的蓝牙设备(注意：是已配对)
                    Set<BluetoothDevice> ds=adapter.getBondedDevices();
                    //遍历出来蓝牙设备,
                    if(ds.size()>0)
                    {
                        for(BluetoothDevice d:ds)
                            System.out.println("配对的蓝牙设备："+d.getAddress());
                    }
                }
                else
                    System.out.println("手机上没有蓝牙设备");
                
                
            }
        });
        
    }
}

//设置可见性监听器(本地蓝牙扫描可见)
    private class DiscoverBluetooth implements View.OnClickListener{

        public void onClick(View v) {
            /*
             * 1.新建一个“蓝牙可见性”请求的意图intent
             * 2.为该intent加入设置可见性持续时间
             * 3.startActivity()发起请求
             * */
            //1.设置请求的intent
            Intent discoverintent=new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
           //2.设置可见性时间（默认最大是300，所以设置超过300都被重设为300）
            discoverintent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION,400 );
            //3.发起请求
            startActivity(discoverintent);
        }
        
    }

public class BluetoothDemo2Activity extends Activity {
    /** Called when the activity is first created. */
    //获取本地蓝牙
    private BluetoothAdapter badapter=BluetoothAdapter.getDefaultAdapter();
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        //注册broadcastreceiver,最后别忘了在Activity的destroy方法里
        //unregisterReceiver(bluetoothReceiver);
        IntentFilter  intentfilter=new IntentFilter(BluetoothDevice.ACTION_FOUND);
        registerReceiver(bluetoothReceiver,intentfilter);
    }
    //启动“扫描蓝牙"按钮监听器
    private class ScanBluetoothDevice implements View.OnClickListener
    {

        public void onClick(View v) {
            // 启动扫描！
            badapter.startDiscovery();
        }
        
    }
    //处理扫描的请求
    private  BroadcastReceiver bluetoothReceiver=new BroadcastReceiver()
    {

        @Override
        public void onReceive(Context context, Intent intent) {
            // 在此处理发起的请求
            String action = intent.getAction();
            if(BluetoothDevice.ACTION_FOUND.equals(action)){
                //可以从收到的Intent对象当中，将代表远程蓝牙适配器的对象取出
                BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                System.out.println(device.getAddress());
            }
        }
        
    };  
}