單片機連接手機應用客戶端進行藍牙通訊：

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package com.severn;import java.util.ArrayList;import android.app.Activity; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.bluetooth.BluetoothManager; import android.content.Context; import android.content.Intent; import android.content.pm.PackageManager; import android.os.Bundle; import android.os.Handler; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.BaseAdapter; import android.widget.Button; import android.widget.ListView; import android.widget.TextView; import android.widget.Toast;import com.severn.ui.Ble_Activity;/*** @Description: TODO<MainActivity類實現打開藍牙、掃描藍牙>*/ public class MainActivity extends Activity implements OnClickListener {// 掃描藍牙按鈕private Button scan_btn;// 藍牙適配器BluetoothAdapter mBluetoothAdapter;// 藍牙信號強度private ArrayList<Integer> rssis;// 自定義AdapterLeDeviceListAdapter mleDeviceListAdapter;// listview顯示掃描到的藍牙信息ListView lv;// 描述掃描藍牙的狀態private boolean mScanning;private boolean scan_flag;private Handler mHandler;int REQUEST_ENABLE_BT = 1;// 藍牙掃描時間private static final long SCAN_PERIOD = 10000;@Overrideprotected void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);// 初始化控件init();// 初始化藍牙init_ble();scan_flag = true;// 自定義適配器mleDeviceListAdapter = new LeDeviceListAdapter();// 為listview指定適配器lv.setAdapter(mleDeviceListAdapter);/* listview點擊函數 */lv.setOnItemClickListener(new AdapterView.OnItemClickListener(){@Overridepublic void onItemClick(AdapterView<?> arg0, View v, int position,long id){// TODO Auto-generated method stubfinal BluetoothDevice device = mleDeviceListAdapter.getDevice(position);if (device == null)return;final Intent intent = new Intent(MainActivity.this,Ble_Activity.class);intent.putExtra(Ble_Activity.EXTRAS_DEVICE_NAME,device.getName());intent.putExtra(Ble_Activity.EXTRAS_DEVICE_ADDRESS,device.getAddress());if (mScanning){/* 停止掃描設備 */mBluetoothAdapter.stopLeScan(mLeScanCallback);mScanning = false;}try{// 啟動Ble_ActivitystartActivity(intent);} catch (Exception e){e.printStackTrace();// TODO: handle exception}}});}/*** @Title: init* @Description: TODO(初始化UI控件)* @return void* @throws*/private void init(){scan_btn = this.findViewById(R.id.scan_dev_btn);scan_btn.setOnClickListener(this);lv = this.findViewById(R.id.lv);mHandler = new Handler();}/*** @Title: init_ble* @Description: TODO(初始化藍牙)* @return void* @throws*/private void init_ble(){// 手機硬件支持藍牙if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH_LE)){Toast.makeText(this, "不支持BLE", Toast.LENGTH_SHORT).show();finish();}// Initializes Bluetooth adapter.// 獲取手機本地的藍牙適配器final BluetoothManager bluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);mBluetoothAdapter = bluetoothManager.getAdapter();// 打開藍牙權限if (mBluetoothAdapter == null || !mBluetoothAdapter.isEnabled()){Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);}}/** 按鈕響應事件*/@Overridepublic void onClick(View v){// TODO Auto-generated method stubif (scan_flag){mleDeviceListAdapter = new LeDeviceListAdapter();lv.setAdapter(mleDeviceListAdapter);scanLeDevice(true);} else{scanLeDevice(false);scan_btn.setText("掃描設備");}}/*** @Title: scanLeDevice* @Description: TODO(掃描藍牙設備 )* @param enable* (掃描使能，true:掃描開始,false:掃描停止)* @return void* @throws*/private void scanLeDevice(final boolean enable){if (enable){// Stops scanning after a pre-defined scan period.mHandler.postDelayed(new Runnable(){@Overridepublic void run(){mScanning = false;scan_flag = true;scan_btn.setText("掃描設備");Log.i("SCAN", "stop.....................");mBluetoothAdapter.stopLeScan(mLeScanCallback);}}, SCAN_PERIOD);/* 開始掃描藍牙設備，帶mLeScanCallback 回調函數 */Log.i("SCAN", "begin.....................");mScanning = true;scan_flag = false;scan_btn.setText("停止掃描");mBluetoothAdapter.startLeScan(mLeScanCallback);} else{Log.i("Stop", "stoping................");mScanning = false;mBluetoothAdapter.stopLeScan(mLeScanCallback);scan_flag = true;}}/*** 藍牙掃描回調函數 實現掃描藍牙設備，回調藍牙BluetoothDevice，可以獲取name MAC等信息* * **/private BluetoothAdapter.LeScanCallback mLeScanCallback = new BluetoothAdapter.LeScanCallback(){@Overridepublic void onLeScan(final BluetoothDevice device, final int rssi,byte[] scanRecord){// TODO Auto-generated method stubrunOnUiThread(new Runnable(){@Overridepublic void run(){/* 講掃描到設備的信息輸出到listview的適配器 */mleDeviceListAdapter.addDevice(device);mleDeviceListAdapter.notifyDataSetChanged();}});}};/*** @Description: TODO<自定義適配器Adapter,作為listview的適配器>* @version: V1.0*/private class LeDeviceListAdapter extends BaseAdapter {private ArrayList<BluetoothDevice> mLeDevices;private LayoutInflater mInflator;public LeDeviceListAdapter(){super();//rssis = new ArrayList();mLeDevices = new ArrayList();mInflator = getLayoutInflater();}public void addDevice(BluetoothDevice device){if (!mLeDevices.contains(device)){mLeDevices.add(device);}}public BluetoothDevice getDevice(int position){return mLeDevices.get(position);}public void clear(){mLeDevices.clear();rssis.clear();}@Overridepublic int getCount(){return mLeDevices.size();}@Overridepublic Object getItem(int i){return mLeDevices.get(i);}@Overridepublic long getItemId(int i){return i;}/*** 重寫getview* * **/@Overridepublic View getView(int i, View view, ViewGroup viewGroup){// General ListView optimization code.// 加載listview每一項的視圖view = mInflator.inflate(R.layout.listitem, null);// 初始化三個textview顯示藍牙信息//TextView deviceAddress = view// .findViewById(R.id.tv_deviceAddr);TextView deviceName = view.findViewById(R.id.tv_deviceName);//TextView rssi =view.findViewById(R.id.tv_rssi);BluetoothDevice device = mLeDevices.get(i);//deviceAddress.setText(device.getAddress());deviceName.setText(device.getName());//rssi.setText("" + rssis.get(i));return view;}}}

main.xml

<RelativeLayout 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"tools:context="${relativePackage}.${activityClass}" ><Button android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginLeft="20dip"android:layout_marginRight="20dip"android:layout_marginTop="30dip"android:text="掃描設備"android:id="@+id/scan_dev_btn"/><ListViewandroid:id="@+id/lv"android:layout_marginTop="100dip"android:layout_marginLeft="20dip"android:layout_marginRight="20dip"android:layout_width="match_parent"android:layout_height="match_parent"android:layout_marginBottom="50dip" > </ListView></RelativeLayout>

listyview.xml

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" android:background="@drawable/bg_button"><LinearLayoutandroid:layout_width="match_parent"android:background="#00BA79"android:layout_height="wrap_content" ><TextViewandroid:id="@+id/textView1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:textColor="#ffffff"android:textSize="25dp"android:text="設備名稱:" /><TextViewandroid:id="@+id/tv_deviceName"android:layout_width="wrap_content"android:layout_height="wrap_content"android:textColor="#ffffff"android:textSize="25dp"android:text="TextView" /></LinearLayout></LinearLayout>

Ble_activity

package com.severn.ui;import java.util.ArrayList; import java.util.HashMap; import java.util.List; import com.severn.service.*; import android.app.Activity; import android.bluetooth.BluetoothGattCharacteristic; import android.bluetooth.BluetoothGattDescriptor; import android.bluetooth.BluetoothGattService; import android.content.BroadcastReceiver; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.content.ServiceConnection; import android.os.Bundle; import android.os.Handler; import android.os.IBinder; import android.os.Message; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.ScrollView; import android.widget.TextView;import com.severn.R; import com.severn.service.BluetoothLeService;/** * @Description: TODO<Ble_Activity實現連接BLE,發送和接受BLE的數據> */ public class Ble_Activity extends Activity implements OnClickListener {private final static String TAG = Ble_Activity.class.getSimpleName();//藍牙4.0的UUID,其中0000ffe1-0000-1000-8000-00805f9b34fb是廣州匯承信息科技有限公司08藍牙模塊的UUIDpublic static String HEART_RATE_MEASUREMENT = "0000ffe1-0000-1000-8000-00805f9b34fb";public static String EXTRAS_DEVICE_NAME = "DEVICE_NAME";;public static String EXTRAS_DEVICE_ADDRESS = "DEVICE_ADDRESS";public static String EXTRAS_DEVICE_RSSI = "RSSI";//藍牙連接狀態private boolean mConnected = false;private String status = "disconnected";//藍牙名字private String mDeviceName;//藍牙地址private String mDeviceAddress;//藍牙信號值private String mRssi;private Bundle b;private String rev_str = "";//藍牙service,負責后臺的藍牙服務private static BluetoothLeService mBluetoothLeService;//文本框，顯示接受的內容private TextView rev_tv, connect_state;//發送按鈕private Button send_btn;//文本編輯框private EditText send_et;private ScrollView rev_sv;private ArrayList<ArrayList<BluetoothGattCharacteristic>> mGattCharacteristics = new ArrayList<ArrayList<BluetoothGattCharacteristic>>();//藍牙特征值private static BluetoothGattCharacteristic target_chara = null;private Handler mhandler = new Handler();private Handler myHandler = new Handler(){// 2.重寫消息處理函數public void handleMessage(Message msg){switch (msg.what){// 判斷發送的消息case 1:{// 更新ViewString state = msg.getData().getString("connect_state");connect_state.setText(state);break;}}super.handleMessage(msg);}};@Overrideprotected void onCreate(Bundle savedInstanceState){// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.ble_activity);b = getIntent().getExtras();//從意圖獲取顯示的藍牙信息mDeviceName = b.getString(EXTRAS_DEVICE_NAME);mDeviceAddress = b.getString(EXTRAS_DEVICE_ADDRESS);//mRssi = b.getString(EXTRAS_DEVICE_RSSI);/* 啟動藍牙service */Intent gattServiceIntent = new Intent(this, BluetoothLeService.class);bindService(gattServiceIntent, mServiceConnection, BIND_AUTO_CREATE);init();}@Overrideprotected void onDestroy(){super.onDestroy();//解除廣播接收器unregisterReceiver(mGattUpdateReceiver);mBluetoothLeService = null;}// Activity出來時候，綁定廣播接收器，監聽藍牙連接服務傳過來的事件@Overrideprotected void onResume(){super.onResume();//綁定廣播接收器registerReceiver(mGattUpdateReceiver, makeGattUpdateIntentFilter());if (mBluetoothLeService != null){ //根據藍牙地址，建立連接final boolean result = mBluetoothLeService.connect(mDeviceAddress);Log.d(TAG, "Connect request result=" + result);}}/** * @Title: init * @Description: TODO(初始化UI控件) * @param 無* @return void * @throws */ private void init(){rev_sv = (ScrollView) this.findViewById(R.id.rev_sv);rev_tv = (TextView) this.findViewById(R.id.rev_tv);connect_state = (TextView) this.findViewById(R.id.connect_state);send_btn = (Button) this.findViewById(R.id.send_btn);send_et = (EditText) this.findViewById(R.id.send_et);connect_state.setText(status);send_btn.setOnClickListener(this);}/* BluetoothLeService綁定的回調函數 */private final ServiceConnection mServiceConnection = new ServiceConnection(){@Overridepublic void onServiceConnected(ComponentName componentName,IBinder service){mBluetoothLeService = ((BluetoothLeService.LocalBinder) service).getService();if (!mBluetoothLeService.initialize()){Log.e(TAG, "Unable to initialize Bluetooth");finish();}// 根據藍牙地址，連接設備mBluetoothLeService.connect(mDeviceAddress);}@Overridepublic void onServiceDisconnected(ComponentName componentName){mBluetoothLeService = null;}};/*** 廣播接收器，負責接收BluetoothLeService類發送的數據*/private final BroadcastReceiver mGattUpdateReceiver = new BroadcastReceiver(){@Overridepublic void onReceive(Context context, Intent intent){final String action = intent.getAction();if (BluetoothLeService.ACTION_GATT_CONNECTED.equals(action))//Gatt連接成功{mConnected = true;status = "connected";//更新連接狀態updateConnectionState(status);System.out.println("BroadcastReceiver :" + "device connected");} else if (BluetoothLeService.ACTION_GATT_DISCONNECTED//Gatt連接失敗.equals(action)){mConnected = false;status = "disconnected";//更新連接狀態updateConnectionState(status);System.out.println("BroadcastReceiver :"+ "device disconnected");} else if (BluetoothLeService.ACTION_GATT_SERVICES_DISCOVERED//發現GATT服務器.equals(action)){// Show all the supported services and characteristics on the// user interface.//獲取設備的所有藍牙服務displayGattServices(mBluetoothLeService.getSupportedGattServices());System.out.println("BroadcastReceiver :"+ "device SERVICES_DISCOVERED");} else if (BluetoothLeService.ACTION_DATA_AVAILABLE.equals(action))//有效數據{ //處理發送過來的數據displayData(intent.getExtras().getString(BluetoothLeService.EXTRA_DATA));System.out.println("BroadcastReceiver onData:"+ intent.getStringExtra(BluetoothLeService.EXTRA_DATA));}}};/* 更新連接狀態 */private void updateConnectionState(String status){Message msg = new Message();msg.what = 1;Bundle b = new Bundle();b.putString("connect_state", status);msg.setData(b);//將連接狀態更新的UI的textview上myHandler.sendMessage(msg);System.out.println("connect_state:" + status);}/* 意圖過濾器 */private static IntentFilter makeGattUpdateIntentFilter(){final IntentFilter intentFilter = new IntentFilter();intentFilter.addAction(BluetoothLeService.ACTION_GATT_CONNECTED);intentFilter.addAction(BluetoothLeService.ACTION_GATT_DISCONNECTED);intentFilter.addAction(BluetoothLeService.ACTION_GATT_SERVICES_DISCOVERED);intentFilter.addAction(BluetoothLeService.ACTION_DATA_AVAILABLE);return intentFilter;}/** * @Title: displayData * @Description: TODO(接收到的數據在scrollview上顯示) * @param @param rev_string(接受的數據)* @return void * @throws */ private void displayData(String rev_string){rev_str += rev_string;runOnUiThread(new Runnable(){@Overridepublic void run(){rev_tv.setText(rev_str);rev_sv.scrollTo(0, rev_tv.getMeasuredHeight());System.out.println("rev:" + rev_str);}});}/** * @Title: displayGattServices * @Description: TODO(處理藍牙服務) * @param 無 * @return void * @throws */ private void displayGattServices(List<BluetoothGattService> gattServices){if (gattServices == null)return;String uuid = null;// 服務數據,可擴展下拉列表的第一級數據ArrayList<HashMap<String, String>> gattServiceData = new ArrayList<HashMap<String, String>>();// 特征數據（隸屬于某一級服務下面的特征值集合）ArrayList<ArrayList<HashMap<String, String>>> gattCharacteristicData = new ArrayList<ArrayList<HashMap<String, String>>>();// 部分層次，所有特征值集合mGattCharacteristics = new ArrayList<ArrayList<BluetoothGattCharacteristic>>();// Loops through available GATT Services.for (BluetoothGattService gattService : gattServices){// 獲取服務列表HashMap<String, String> currentServiceData = new HashMap<String, String>();uuid = gattService.getUuid().toString();// 查表，根據該uuid獲取對應的服務名稱。SampleGattAttributes這個表需要自定義。gattServiceData.add(currentServiceData);System.out.println("Service uuid:" + uuid);ArrayList<HashMap<String, String>> gattCharacteristicGroupData = new ArrayList<HashMap<String, String>>();// 從當前循環所指向的服務中讀取特征值列表List<BluetoothGattCharacteristic> gattCharacteristics = gattService.getCharacteristics();ArrayList<BluetoothGattCharacteristic> charas = new ArrayList<BluetoothGattCharacteristic>();// Loops through available Characteristics.// 對于當前循環所指向的服務中的每一個特征值for (final BluetoothGattCharacteristic gattCharacteristic : gattCharacteristics){charas.add(gattCharacteristic);HashMap<String, String> currentCharaData = new HashMap<String, String>();uuid = gattCharacteristic.getUuid().toString();if (gattCharacteristic.getUuid().toString().equals(HEART_RATE_MEASUREMENT)){// 測試讀取當前Characteristic數據，會觸發mOnDataAvailable.onCharacteristicRead()mhandler.postDelayed(new Runnable(){@Overridepublic void run(){// TODO Auto-generated method stubmBluetoothLeService.readCharacteristic(gattCharacteristic);}}, 200);// 接受Characteristic被寫的通知,收到藍牙模塊的數據后會觸發mOnDataAvailable.onCharacteristicWrite()mBluetoothLeService.setCharacteristicNotification(gattCharacteristic, true);target_chara = gattCharacteristic;// 設置數據內容// 往藍牙模塊寫入數據// mBluetoothLeService.writeCharacteristic(gattCharacteristic);}List<BluetoothGattDescriptor> descriptors = gattCharacteristic.getDescriptors();for (BluetoothGattDescriptor descriptor : descriptors){System.out.println("---descriptor UUID:"+ descriptor.getUuid());// 獲取特征值的描述mBluetoothLeService.getCharacteristicDescriptor(descriptor);// mBluetoothLeService.setCharacteristicNotification(gattCharacteristic,// true);}gattCharacteristicGroupData.add(currentCharaData);}// 按先后順序，分層次放入特征值集合中，只有特征值mGattCharacteristics.add(charas);// 構件第二級擴展列表（服務下面的特征值）gattCharacteristicData.add(gattCharacteristicGroupData);}}/*** 將數據分包* * **/public int[] dataSeparate(int len){ int[] lens = new int[2];lens[0]=len/20;lens[1]=len-20*lens[0];return lens;}/* * 發送按鍵的響應事件，主要發送文本框的數據*/@Overridepublic void onClick(View v){// TODO Auto-generated method stubbyte[] buff = send_et.getText().toString().getBytes();int len = buff.length;int[] lens = dataSeparate(len);for(int i =0;i<lens[0];i++){String str = new String(buff, 20*i, 20);target_chara.setValue(str);//只能一次發送20字節，所以這里要分包發送//調用藍牙服務的寫特征值方法實現發送數據mBluetoothLeService.writeCharacteristic(target_chara);}if(lens[1]!=0){String str = new String(buff, 20*lens[0], lens[1]);target_chara.setValue(str);//調用藍牙服務的寫特征值方法實現發送數據mBluetoothLeService.writeCharacteristic(target_chara);}}}

ble_activity.xml

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><LinearLayout android:layout_width="fill_parent"android:layout_height="wrap_content"android:orientation="horizontal"><TextView android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="狀態："android:layout_marginLeft="10dip"/><TextView android:layout_width="wrap_content"android:layout_height="wrap_content"android:id="@+id/connect_state"/></LinearLayout><ScrollViewandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_weight="1"android:id="@+id/rev_sv"><TextView android:layout_width="fill_parent"android:layout_height="wrap_content"android:id="@+id/rev_tv"/></ScrollView><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_gravity="bottom"android:orientation="horizontal" ><EditTextandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_weight="1"android:id="@+id/send_et"android:typeface="normal" ></EditText><Buttonandroid:id="@+id/send_btn"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_weight="3"android:text="send" /></LinearLayout></LinearLayout>

BluetoothLeService.class

package com.severn.service;import java.util.ArrayList; import java.util.List; import java.util.UUID;import android.app.Service; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.bluetooth.BluetoothGatt; import android.bluetooth.BluetoothGattCallback; import android.bluetooth.BluetoothGattCharacteristic; import android.bluetooth.BluetoothGattDescriptor; import android.bluetooth.BluetoothGattService; import android.bluetooth.BluetoothManager; import android.bluetooth.BluetoothProfile; import android.content.Context; import android.content.Intent; import android.hardware.Sensor; import android.os.Binder; import android.os.IBinder; import android.util.Log;/** * @Description: TODO<藍牙服務，負責在后臺實現藍牙的連接，數據的發送接受> */ public class BluetoothLeService extends Service {private final static String TAG = "BluetoothLeService";// luetoothLeService.class.getSimpleName();private List<Sensor> mEnabledSensors = new ArrayList<Sensor>();//藍牙相關類private BluetoothManager mBluetoothManager;private BluetoothAdapter mBluetoothAdapter;private String mBluetoothDeviceAddress;private BluetoothGatt mBluetoothGatt;private int mConnectionState = STATE_DISCONNECTED;private static final int STATE_DISCONNECTED = 0;private static final int STATE_CONNECTING = 1;private static final int STATE_CONNECTED = 2;public final static String ACTION_GATT_CONNECTED = "com.hc_ble.bluetooth.le.ACTION_GATT_CONNECTED";public final static String ACTION_GATT_DISCONNECTED = "com.hc_ble.bluetooth.le.ACTION_GATT_DISCONNECTED";public final static String ACTION_GATT_SERVICES_DISCOVERED = "com.hc_ble.bluetooth.le.ACTION_GATT_SERVICES_DISCOVERED";public final static String ACTION_DATA_AVAILABLE = "com.hc_ble.bluetooth.le.ACTION_DATA_AVAILABLE";public final static String EXTRA_DATA = "com.hc_ble.bluetooth.le.EXTRA_DATA";// public final static UUID UUID_HEART_RATE_MEASUREMENT =zzzzzzzzzzzzz// UUID.fromString(SampleGattAttributes.HEART_RATE_MEASUREMENT);private OnDataAvailableListener mOnDataAvailableListener;// Implements callback methods for GATT events that the app cares about. For// example,// connection change and services discovered.public interface OnDataAvailableListener {public void onCharacteristicRead(BluetoothGatt gatt,BluetoothGattCharacteristic characteristic, int status);public void onCharacteristicWrite(BluetoothGatt gatt,BluetoothGattCharacteristic characteristic);public void onCharacteristicChanged(BluetoothGatt gatt,BluetoothGattCharacteristic characteristic);}public void setOnDataAvailableListener(OnDataAvailableListener l){mOnDataAvailableListener = l;}/* 連接遠程設備的回調函數 */private final BluetoothGattCallback mGattCallback = new BluetoothGattCallback(){@Overridepublic void onConnectionStateChange(BluetoothGatt gatt, int status,int newState){String intentAction;if (newState == BluetoothProfile.STATE_CONNECTED)//連接成功{intentAction = ACTION_GATT_CONNECTED;mConnectionState = STATE_CONNECTED;/* 通過廣播更新連接狀態 */broadcastUpdate(intentAction);Log.i(TAG, "Connected to GATT server.");// Attempts to discover services after successful connection.Log.i(TAG, "Attempting to start service discovery:"+ mBluetoothGatt.discoverServices());} else if (newState == BluetoothProfile.STATE_DISCONNECTED)//連接失敗{intentAction = ACTION_GATT_DISCONNECTED;mConnectionState = STATE_DISCONNECTED;Log.i(TAG, "Disconnected from GATT server.");broadcastUpdate(intentAction);}}/** 重寫onServicesDiscovered，發現藍牙服務* * */@Overridepublic void onServicesDiscovered(BluetoothGatt gatt, int status){if (status == BluetoothGatt.GATT_SUCCESS)//發現到服務{broadcastUpdate(ACTION_GATT_SERVICES_DISCOVERED);Log.i(TAG, "--onServicesDiscovered called--");} else{Log.w(TAG, "onServicesDiscovered received: " + status);System.out.println("onServicesDiscovered received: " + status);}}/** 特征值的讀寫* */@Overridepublic void onCharacteristicRead(BluetoothGatt gatt,BluetoothGattCharacteristic characteristic, int status){if (status == BluetoothGatt.GATT_SUCCESS){Log.i(TAG, "--onCharacteristicRead called--");//從特征值讀取數據byte[] sucString = characteristic.getValue();String string = new String(sucString);//將數據通過廣播到Ble_ActivitybroadcastUpdate(ACTION_DATA_AVAILABLE, characteristic);}}/** 特征值的改變* */@Overridepublic void onCharacteristicChanged(BluetoothGatt gatt,BluetoothGattCharacteristic characteristic){broadcastUpdate(ACTION_DATA_AVAILABLE, characteristic);}/** 特征值的寫* */@Overridepublic void onCharacteristicWrite(BluetoothGatt gatt,BluetoothGattCharacteristic characteristic, int status){// 以下語句實現 發送完數據或也顯示到界面上//broadcastUpdate(ACTION_DATA_AVAILABLE, characteristic);}/** 讀描述值* */@Overridepublic void onDescriptorRead(BluetoothGatt gatt,BluetoothGattDescriptor descriptor, int status){// TODO Auto-generated method stub// super.onDescriptorRead(gatt, descriptor, status);Log.w(TAG, "----onDescriptorRead status: " + status);byte[] desc = descriptor.getValue();if (desc != null){Log.w(TAG, "----onDescriptorRead value: " + new String(desc));}}/** 寫描述值* */@Overridepublic void onDescriptorWrite(BluetoothGatt gatt,BluetoothGattDescriptor descriptor, int status){// TODO Auto-generated method stub// super.onDescriptorWrite(gatt, descriptor, status);Log.w(TAG, "--onDescriptorWrite--: " + status);}/** 讀寫藍牙信號值* */@Overridepublic void onReadRemoteRssi(BluetoothGatt gatt, int rssi, int status){// TODO Auto-generated method stub// super.onReadRemoteRssi(gatt, rssi, status);Log.w(TAG, "--onReadRemoteRssi--: " + status);broadcastUpdate(ACTION_DATA_AVAILABLE, rssi);}@Overridepublic void onReliableWriteCompleted(BluetoothGatt gatt, int status){// TODO Auto-generated method stub// super.onReliableWriteCompleted(gatt, status);Log.w(TAG, "--onReliableWriteCompleted--: " + status);}};//廣播意圖private void broadcastUpdate(final String action, int rssi){final Intent intent = new Intent(action);intent.putExtra(EXTRA_DATA, String.valueOf(rssi));sendBroadcast(intent);}//廣播意圖private void broadcastUpdate(final String action){final Intent intent = new Intent(action);sendBroadcast(intent);}/* 廣播遠程發送過來的數據 */public void broadcastUpdate(final String action,final BluetoothGattCharacteristic characteristic){final Intent intent = new Intent(action);//從特征值獲取數據final byte[] data = characteristic.getValue();if (data != null && data.length > 0){final StringBuilder stringBuilder = new StringBuilder(data.length);for (byte byteChar : data){stringBuilder.append(String.format("%02X ", byteChar));Log.i(TAG, "***broadcastUpdate: byteChar = " + byteChar);}intent.putExtra(EXTRA_DATA, new String(data));System.out.println("broadcastUpdate for read data:"+ new String(data));}sendBroadcast(intent);}public class LocalBinder extends Binder {public BluetoothLeService getService(){return BluetoothLeService.this;}}@Overridepublic IBinder onBind(Intent intent){return mBinder;}@Overridepublic boolean onUnbind(Intent intent){close();return super.onUnbind(intent);}private final IBinder mBinder = new LocalBinder();/*** Initializes a reference to the local Bluetooth adapter.* * @return Return true if the initialization is successful.*//* service 中藍牙初始化 */public boolean initialize(){// For API level 18 and above, get a reference to BluetoothAdapter// through// BluetoothManager.if (mBluetoothManager == null){ //獲取系統的藍牙管理器mBluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);if (mBluetoothManager == null){Log.e(TAG, "Unable to initialize BluetoothManager.");return false;}}mBluetoothAdapter = mBluetoothManager.getAdapter();if (mBluetoothAdapter == null){Log.e(TAG, "Unable to obtain a BluetoothAdapter.");return false;}return true;}/*** Connects to the GATT server hosted on the Bluetooth LE device.* * @param address* The device address of the destination device.* * @return Return true if the connection is initiated successfully. The* connection result is reported asynchronously through the* {@code BluetoothGattCallback#onConnectionStateChange(android.bluetooth.BluetoothGatt, int, int)}* callback.*/// 連接遠程藍牙public boolean connect(final String address){if (mBluetoothAdapter == null || address == null){Log.w(TAG,"BluetoothAdapter not initialized or unspecified address.");return false;}// Previously connected device. Try to reconnect.if (mBluetoothDeviceAddress != null&& address.equals(mBluetoothDeviceAddress)&& mBluetoothGatt != null){Log.d(TAG,"Trying to use an existing mBluetoothGatt for connection.");if (mBluetoothGatt.connect())//連接藍牙，其實就是調用BluetoothGatt的連接方法{mConnectionState = STATE_CONNECTING;return true;} else{return false;}}/* 獲取遠端的藍牙設備 */final BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address);if (device == null){Log.w(TAG, "Device not found. Unable to connect.");return false;}// We want to directly connect to the device, so we are setting the// autoConnect// parameter to false./* 調用device中的connectGatt連接到遠程設備 */mBluetoothGatt = device.connectGatt(this, false, mGattCallback);Log.d(TAG, "Trying to create a new connection.");mBluetoothDeviceAddress = address;mConnectionState = STATE_CONNECTING;System.out.println("device.getBondState==" + device.getBondState());return true;}/*** Disconnects an existing connection or cancel a pending connection. The* disconnection result is reported asynchronously through the* {@code BluetoothGattCallback#onConnectionStateChange(android.bluetooth.BluetoothGatt, int, int)}* callback.*//** 取消連接* * *//** * @Title: disconnect * @Description: TODO(取消藍牙連接) * @param 無* @return void * @throws */ public void disconnect(){if (mBluetoothAdapter == null || mBluetoothGatt == null){Log.w(TAG, "BluetoothAdapter not initialized");return;}mBluetoothGatt.disconnect();}/*** After using a given BLE device, the app must call this method to ensure* resources are released properly.*//** * @Title: close * @Description: TODO(關閉所有藍牙連接) * @param 無* @return void * @throws */ public void close(){if (mBluetoothGatt == null){return;}mBluetoothGatt.close();mBluetoothGatt = null;}/*** Request a read on a given {@code BluetoothGattCharacteristic}. The read* result is reported asynchronously through the* {@code BluetoothGattCallback#onCharacteristicRead(android.bluetooth.BluetoothGatt, android.bluetooth.BluetoothGattCharacteristic, int)}* callback.* * @param characteristic* The characteristic to read from.*//** * @Title: readCharacteristic * @Description: TODO(讀取特征值) * @param @param characteristic（要讀的特征值）* @return void 返回類型 * @throws */ public void readCharacteristic(BluetoothGattCharacteristic characteristic){if (mBluetoothAdapter == null || mBluetoothGatt == null){Log.w(TAG, "BluetoothAdapter not initialized");return;}mBluetoothGatt.readCharacteristic(characteristic);}// 寫入特征值public void writeCharacteristic(BluetoothGattCharacteristic characteristic){if (mBluetoothAdapter == null || mBluetoothGatt == null){Log.w(TAG, "BluetoothAdapter not initialized");return;}mBluetoothGatt.writeCharacteristic(characteristic);}// 讀取RSSipublic void readRssi(){if (mBluetoothAdapter == null || mBluetoothGatt == null){Log.w(TAG, "BluetoothAdapter not initialized");return;}mBluetoothGatt.readRemoteRssi();}/*** Enables or disables notification on a give characteristic.* * @param characteristic* Characteristic to act on.* @param enabled* If true, enable notification. False otherwise.*//** * @Title: setCharacteristicNotification * @Description: TODO(設置特征值通變化通知) * @param @param characteristic（特征值）* @param @param enabled （使能） * @return void * @throws */ public void setCharacteristicNotification(BluetoothGattCharacteristic characteristic, boolean enabled){if (mBluetoothAdapter == null || mBluetoothGatt == null){Log.w(TAG, "BluetoothAdapter not initialized");return;}mBluetoothGatt.setCharacteristicNotification(characteristic, enabled);BluetoothGattDescriptor clientConfig = characteristic.getDescriptor(UUID.fromString("00002902-0000-1000-8000-00805f9b34fb"));if (enabled){clientConfig.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);} else{clientConfig.setValue(BluetoothGattDescriptor.DISABLE_NOTIFICATION_VALUE);}mBluetoothGatt.writeDescriptor(clientConfig);}/** * @Title: getCharacteristicDescriptor * @Description: TODO(得到特征值下的描述值) * @param @param 無* @return void * @throws */ public void getCharacteristicDescriptor(BluetoothGattDescriptor descriptor){if (mBluetoothAdapter == null || mBluetoothGatt == null){Log.w(TAG, "BluetoothAdapter not initialized");return;}mBluetoothGatt.readDescriptor(descriptor);}/*** Retrieves a list of supported GATT services on the connected device. This* should be invoked only after {@code BluetoothGatt#discoverServices()}* completes successfully.* * @return A {@code List} of supported services.*//** * @Title: getSupportedGattServices * @Description: TODO(得到藍牙的所有服務) * @param @return 無* @return List<BluetoothGattService> * @throws */ public List<BluetoothGattService> getSupportedGattServices(){if (mBluetoothGatt == null)return null;return mBluetoothGatt.getServices();}}

Androidmainfest.xml

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"package="com.severn"android:versionCode="1"android:versionName="1.2" ><uses-permission android:name="android.permission.BLUETOOTH"/><uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/><uses-feature android:name="android.hardware.bluetooth_le" android:required="true"/><applicationandroid:allowBackup="true"android:icon="@drawable/hc"android:label="@string/app_name"android:theme="@style/AppTheme" ><activityandroid:name=".MainActivity"android:label="@string/app_name" ><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity><activity android:name=".ui.Ble_Activity"></activity><service android:name="com.huicheng.service.BluetoothLeService" android:enabled="true"></service></application></manifest>

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