Android 蓝牙连接

package com.example.weijiqian.bluetooth; import android.app.Activity; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.bluetooth.BluetoothServerSocket; 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.os.Handler; import android.os.Message; 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 java.io.InputStream; import java.io.OutputStream; import java.util.ArrayList; import java.util.Set; import java.util.UUID; public class MainActivity extends Activity implements AdapterView.OnItemClickListener { Button open; Button close; Button listBtn; ListView listview; Button search; /** * 设备列表 */ ArrayList deviceList; ArrayAdapter adapter; /** * //已经配对的设备 */ Set<BluetoothDevice> deviceSet; /** * 蓝牙适配器 */ BluetoothAdapter bluetoothAdapter; /** * UUID,是随便写的,两个配对的设备UUID要是一样的. */ private final UUID MY_UUID = UUID.fromString("e220ff28-b64a-4cbc-804b-a73dfcdc3941"); private final String NAME = "bluetoothSocket"; /** * 蓝牙客户端 */ private BluetoothSocket clientSocket; /** * 蓝牙设备 */ private BluetoothDevice device; /** * 输出流 */ private OutputStream ous; /** * 线程,接受传递过来的数据. */ private AcceptThread acceptThread ; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); open = (Button) findViewById(R.id.open); close = (Button) findViewById(R.id.close); listBtn = (Button) findViewById(R.id.show_list); search = (Button) findViewById(R.id.search); listview = (ListView) findViewById(R.id.list_view); //实例化蓝牙 bluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); //初始化蓝牙列表显示. deviceList = new ArrayList(); adapter = new ArrayAdapter (this,android.R.layout.simple_list_item_1, deviceList); listview.setAdapter(adapter); listview.setOnItemClickListener(this); //注册广播,接受扫描附近蓝牙的结果. IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND); registerReceiver(mReceiver, filter); filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED); registerReceiver(mReceiver, filter); //开启线程.监听数据. acceptThread = new AcceptThread(); acceptThread.start(); open.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { openBluetooth(); } }); search.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { searchBluetooth(); } }); close.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { closeBluetooth(); } }); listBtn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { showList(); } }); } private void openBluetooth() { //打开蓝牙 if(!bluetoothAdapter.isEnabled()){ //弹出对话框提示用户是后打开 Intent enabler = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(enabler, 0); Toast.makeText(MainActivity.this,"打开蓝牙",Toast.LENGTH_LONG).show(); }else { Toast.makeText(MainActivity.this,"蓝牙已经打开",Toast.LENGTH_LONG).show(); } //打开本机的蓝牙发现功能（默认打开120秒，可以将时间最多延长至300秒） Intent discoveryIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE); discoveryIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);//设置持续时间（最多300秒） startActivityForResult(discoveryIntent,0); } private void searchBluetooth() { if ( !bluetoothAdapter.isDiscovering()){ deviceList.clear(); bluetoothAdapter.startDiscovery(); Toast.makeText(MainActivity.this,"蓝牙开始扫描",Toast.LENGTH_LONG).show(); }else { Toast.makeText(MainActivity.this,"蓝牙正在扫描",Toast.LENGTH_LONG).show(); } } private void showList() { //已经配对的设备 deviceSet = bluetoothAdapter.getBondedDevices(); deviceList.clear(); for(BluetoothDevice bt : deviceSet) deviceList.add(bt.getName() +":"+bt.getAddress()); adapter.notifyDataSetChanged(); } private void closeBluetooth() { if (bluetoothAdapter.isEnabled()){ bluetoothAdapter.disable(); } } BroadcastReceiver mReceiver = new BroadcastReceiver() { public void onReceive(Context context, Intent intent) { String action = intent.getAction(); //找到设备.搜索附近的设备. if (BluetoothDevice.ACTION_FOUND.equals(action)) { BluetoothDevice device = intent .getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); Toast.makeText(MainActivity.this,"搜索到设备",Toast.LENGTH_LONG).show(); if (device.getBondState() != BluetoothDevice.BOND_BONDED) { Log.e("dddd", "find device:" + device.getName() + device.getAddress()); deviceList.add(device.getName()+":"+ device.getAddress()); adapter.notifyDataSetChanged(); } } //搜索完成 else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED .equals(action)) { Toast.makeText(MainActivity.this,"搜索完成",Toast.LENGTH_LONG).show(); } } }; @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { //点击配对. //客户端 String s =(String) adapter.getItem(position); String address = s.substring(s.indexOf(":")+1).trim(); try{ Log.e("ddd","开始配对"); if (bluetoothAdapter.isDiscovering()){ bluetoothAdapter.cancelDiscovery(); } if (device == null ){ device = bluetoothAdapter.getRemoteDevice(address); } if (clientSocket == null ){ clientSocket = device.createRfcommSocketToServiceRecord(MY_UUID); clientSocket.connect(); } //得到输出流 ous = clientSocket.getOutputStream(); //把数据放到输出流. if (ous != null ){ ous.write("发送数据到另外一个手机".getBytes("utf-8")); } }catch (Exception e){ Log.e("ddd","连接出错:"+e.getMessage()); } } //服务端 private Handler handle = new Handler(){