Android-蓝牙

Android蓝牙设备搜索，配对连接。【成熟篇】

代码直上：

MainActivity：

public class MainActivity extends Activity implements OnClickListener{private Button btn_search_devices;private Button btn_close_devices;private ListView list_bonded_devices;private List<BluetoothDevice> bondedDevicesList;private MyListAdapter mBondedAdapter;private ListView list_search_devices;private List<BluetoothDevice> searchDevicesList;private MyListAdapter mSearchAdapter;private BluetoothAdapter adapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);setTitle("搜索蓝牙设备");setContentView(R.layout.activity_main);btn_search_devices = (Button) findViewById(R.id.btn_search_devices);btn_search_devices.setOnClickListener(this);btn_close_devices = (Button) findViewById(R.id.btn_close_devices);btn_close_devices.setOnClickListener(this);//已配对设备列表list_bonded_devices = (ListView) findViewById(R.id.list_bonded_devices);bondedDevicesList = new ArrayList<BluetoothDevice>();//设置适配器mBondedAdapter = new MyListAdapter(this, bondedDevicesList);list_bonded_devices.setAdapter(mBondedAdapter);list_bonded_devices.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> parent, View view,int position, long id) {Toast.makeText(MainActivity.this, "已经配对", Toast.LENGTH_SHORT).show();                try {                  // 连接                   //connect(device);                     } catch (Exception e) {                         e.printStackTrace();                     }}});//搜索到的设备列表list_search_devices = (ListView) findViewById(R.id.list_search_devices);searchDevicesList = new ArrayList<BluetoothDevice>();mSearchAdapter = new MyListAdapter(this, searchDevicesList);list_search_devices.setAdapter(mSearchAdapter);list_search_devices.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> parent, View view,int position, long id) {BluetoothDevice device = searchDevicesList.get(position);                try {                     // 配对                    Method createBondMethod = BluetoothDevice.class.getMethod("createBond");                         createBondMethod.invoke(device);                     } catch (Exception e) {                          e.printStackTrace();                     }     }});// 检查设备是否支持蓝牙,若支持则打开checkBluetooth();// 获取所有已经绑定的蓝牙设备getBondedDevices();                // 注册用以接收到已搜索到的蓝牙设备的receiver          IntentFilter mFilter = new IntentFilter(BluetoothDevice.ACTION_FOUND);        mFilter.addAction(BluetoothDevice.ACTION_FOUND);        mFilter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED);        mFilter.addAction(BluetoothAdapter.ACTION_SCAN_MODE_CHANGED);        mFilter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);        mFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);        // 注册广播接收器，接收并处理搜索结果        registerReceiver(receiver, mFilter);  }/** * 检查设备是否支持蓝牙,若支持则打开 */private void checkBluetooth() {adapter = BluetoothAdapter.getDefaultAdapter();if (adapter == null) {// 设备不支持蓝牙Toast.makeText(this, "设备不支持蓝牙", Toast.LENGTH_SHORT).show();}else {// 判断蓝牙是否打开，如果没有则打开蓝牙// adapter.enable() 直接打开蓝牙，但是不会弹出提示，以下方式会提示用户是否打开if (!adapter.isEnabled()) {Intent intent = new Intent();//打开蓝牙设备intent.setAction(BluetoothAdapter.ACTION_REQUEST_ENABLE);//是设备能够被搜索intent.setAction(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);// 设置蓝牙可见性，最多300秒intent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);startActivity(intent);} }}/** *  获取所有已经绑定的蓝牙设备 */private void getBondedDevices() {bondedDevicesList.clear();Set<BluetoothDevice> devices = adapter.getBondedDevices();  bondedDevicesList.addAll(devices);//为listview动态设置高度（有多少条目就显示多少条目）setListViewHeight(bondedDevicesList.size());mBondedAdapter.notifyDataSetChanged();}private BroadcastReceiver receiver = new BroadcastReceiver() {            @Override          public void onReceive(Context context, Intent intent) {              String action = intent.getAction();              // 获得已经搜索到的蓝牙设备              if (action.equals(BluetoothDevice.ACTION_FOUND)) {                  BluetoothDevice device = intent                          .getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);                // 搜索到的不是已经绑定的蓝牙设备                  if (device.getBondState() != BluetoothDevice.BOND_BONDED) {                  // 防止重复添加                if (searchDevicesList.indexOf(device) == -1)                 searchDevicesList.add(device);                //devicesList.add("未配对 | "+device.getName() + "（"  + device.getAddress()+"）");                mSearchAdapter.notifyDataSetChanged();                }                  // 搜索完成              } else if (action                      .equals(BluetoothAdapter.ACTION_DISCOVERY_FINISHED)) {                 setProgressBarIndeterminateVisibility(false);                  setTitle("搜索完成");              } else if (action.equals(BluetoothDevice.ACTION_BOND_STATE_CHANGED)) {             // 状态改变的广播                  BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);            String name = device.getName();            if (device.getName().equalsIgnoreCase(name)) {                      int connectState = device.getBondState();                     switch (connectState) {                         case BluetoothDevice.BOND_NONE:  //10                    Toast.makeText(MainActivity.this, "取消配对："+device.getName(), Toast.LENGTH_SHORT).show();                        break;                         case BluetoothDevice.BOND_BONDING:  //11                    Toast.makeText(MainActivity.this, "正在配对："+device.getName(), Toast.LENGTH_SHORT).show();                        break;                         case BluetoothDevice.BOND_BONDED:   //12                    Toast.makeText(MainActivity.this, "完成配对："+device.getName(), Toast.LENGTH_SHORT).show();                    getBondedDevices();                    try {                                 // 连接                                  connect(device);                             } catch (Exception e) {                                 e.printStackTrace();                             }                             break;                     }                 }     }        }      };  //蓝牙设备的连接（客户端）private void connect(BluetoothDevice device) {         // 固定的UUID          final String SPP_UUID = "00001101-0000-1000-8000-00805F9B34FB";         UUID uuid = UUID.fromString(SPP_UUID);     try {BluetoothSocket socket = device.createRfcommSocketToServiceRecord(uuid);socket.connect();//OutputStream outputStream = socket.getOutputStream();//        InputStream inputStream = socket.getInputStream();//        outputStream.write("StartOnNet\n".getBytes());//        outputStream.flush();} catch (IOException e) {e.printStackTrace();}     }   @Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn_search_devices:setProgressBarIndeterminateVisibility(true);          setTitle("正在扫描....");          searchDevicesList.clear();        mSearchAdapter.notifyDataSetChanged();        // 如果正在搜索，就先取消搜索          if (!adapter.isDiscovering()) {          adapter.cancelDiscovery();        }          // 开始搜索蓝牙设备,搜索到的蓝牙设备通过广播返回          adapter.startDiscovery();break;case R.id.btn_close_devices: // 如果正在搜索，就先取消搜索          if (adapter.isDiscovering()) {          adapter.cancelDiscovery();        }  break;}}//为listview动态设置高度（有多少条目就显示多少条目）private void setListViewHeight(int count) {if (mBondedAdapter==null) {return ;}int totalHeight = 0;            for (int i = 0; i < count; i++) {            View listItem = mBondedAdapter.getView(i, null, list_bonded_devices);            listItem.measure(0, 0);               totalHeight += listItem.getMeasuredHeight();            }            ViewGroup.LayoutParams params = list_bonded_devices.getLayoutParams();            params.height = totalHeight;            list_bonded_devices.setLayoutParams(params);}@Overrideprotected void onDestroy() {super.onDestroy();//解除注册          unregisterReceiver(receiver);}@Overrideprotected void onResume() {super.onResume();getBondedDevices();}}

activity_main.xml：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="#ffffff"    android:orientation="vertical"    android:padding="20dp" >    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal" >        <Button            android:id="@+id/btn_search_devices"            android:layout_width="0dp"            android:layout_height="wrap_content"            android:layout_weight="1"            android:gravity="center"            android:text="开始搜索" />        <Button            android:id="@+id/btn_close_devices"            android:layout_width="0dp"            android:layout_height="wrap_content"            android:layout_weight="1"            android:gravity="center"            android:text="停止搜索" />    </LinearLayout>    <TextView        android:id="@+id/tv_bonded_devices"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_marginBottom="10dp"        android:layout_marginTop="10dp"        android:background="#CCCCCC"        android:padding="5dp"        android:text="已配对设备"        android:textSize="16sp" />    <ListView        android:id="@+id/list_bonded_devices"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:scrollbars="none" />    <TextView        android:id="@+id/tv_search_devices"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_marginBottom="10dp"        android:layout_marginTop="10dp"        android:background="#CCCCCC"        android:padding="5dp"        android:text="搜索到的设备"        android:textSize="16sp" />    <ListView        android:id="@+id/list_search_devices"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:scrollbars="none" /></LinearLayout>

NetworkUtil：

public static boolean isNetworkAvailable(Context context) {// 得到网络连接信息ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);// 去进行判断网络是否连接if (manager.getActiveNetworkInfo() != null) {return manager.getActiveNetworkInfo().isAvailable();}return false;}/** * 判断是否有外网连接（普通方法不能判断外网的网络是否连接，比如连接上局域网） *  * @return */public static final boolean ping() {String result = null;try {String ip = "www.baidu.com";// ping 的地址，可以换成任何一种可靠的外网Process p = Runtime.getRuntime().exec("ping -c 3 -w 100 " + ip);// ping网址3次// 读取ping的内容，可以不加InputStream input = p.getInputStream();BufferedReader in = new BufferedReader(new InputStreamReader(input));StringBuffer stringBuffer = new StringBuffer();String content = "";while ((content = in.readLine()) != null) {stringBuffer.append(content);}Log.d("------ping-----","result content : " + stringBuffer.toString());// ping的状态int status = p.waitFor();if (status == 0) {result = "success";return true;} else {result = "failed";}} catch (IOException e) {result = "IOException";} catch (InterruptedException e) {result = "InterruptedException";} finally {Log.d("----result---", "result = " + result);}return false;}}

MyListAdapter：

public class MyListAdapter extends BaseAdapter {private Context mContext;private List<BluetoothDevice> mDevices;private BluetoothDevice device;public MyListAdapter(Context context, List<BluetoothDevice> devices) {mContext = context;mDevices = devices;}@Overridepublic int getCount() {if (mDevices == null) {return 0;}return mDevices.size();}@Overridepublic Object getItem(int position) {return null;}@Overridepublic long getItemId(int position) {return 0;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {TextView tv_device = new TextView(mContext);tv_device.setTextSize(16);tv_device.setPadding(10, 15, 10, 15);device = mDevices.get(position);tv_device.setText(device.getName() + "（"  + device.getAddress()+"）");return tv_device;}}

AndroidManifest.xml：

    <uses-permission android:name="android.permission.BLUETOOTH"/>    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>

参考大神成品案例写成，绝对OK。

                                                                                不知名的大神——小弟在此谢过！

后补案例仅供参考学习：点击打开链接下载