android 低功耗BLE蓝牙连接示例代码

android 低功耗ble蓝牙连接跟标准的蓝牙连接还是有很大的不同的。本文低功耗蓝牙连接代码是在sdk的版本4.3以上才支持。所用的核心代码连接也是不一样的。

本文demo下载地址：http://download.csdn.net/detail/qq_16064871/9657885

1、区别

常规的蓝牙连接类是BluetoothSocket

final BluetoothDevice device = mBtAdapter.getRemoteDevice(mstrAddress);
try {
mTransferSocket = device.createRfcommSocketToServiceRecord(UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));
} catch (IOException e1) {
Log.i("err1:", e1.toString());
mTransferSocket = null;
}

mTransferSocket.connect();
mInputStream = mTransferSocket.getInputStream();
mOutputStream = mTransferSocket.getOutputStream();

2、低功耗蓝牙连接类BluetoothGatt，完整的连接代码如下

/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0 *
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package com.southgnss.ble;

import android.annotation.SuppressLint;
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.os.Binder;
import android.os.IBinder;
import android.util.Log;

import java.util.List;
import java.util.UUID;

/**
* Service for managing connection and data communication with a GATT server hosted on a
* given Bluetooth LE device.
*/
@SuppressLint("NewApi")
public class BluetoothLeService extends Service {
private final static String TAG = BluetoothLeService.class.getSimpleName();

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.example.bluetooth.le.ACTION_GATT_CONNECTED";
public final static String ACTION_GATT_DISCONNECTED = "com.example.bluetooth.le.ACTION_GATT_DISCONNECTED";
public final static String ACTION_GATT_SERVICES_DISCOVERED = "com.example.bluetooth.le.ACTION_GATT_SERVICES_DISCOVERED";
public final static String ACTION_DATA_AVAILABLE = "com.example.bluetooth.le.ACTION_DATA_AVAILABLE";
public final static String EXTRA_DATA = "com.example.bluetooth.le.EXTRA_DATA";

public final static UUID UUID_HEART_RATE_MEASUREMENT = UUID.fromString(SampleGattAttributes.HEART_RATE_MEASUREMENT);

// Implements callback methods for GATT events that the app cares about. For example,
// connection change and services discovered.
private final BluetoothGattCallback mGattCallback = new BluetoothGattCallback() {
@Override
public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
String intentAction;
if (newState == BluetoothProfile.STATE_CONNECTED) {
intentAction = ACTION_GATT_CONNECTED;
mConnectionState = STATE_CONNECTED;
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) {
intentAction = ACTION_GATT_DISCONNECTED;
mConnectionState = STATE_DISCONNECTED;
Log.i(TAG, "Disconnected from GATT server.");
broadcastUpdate(intentAction);
}
}

@Override
public void onServicesDiscovered(BluetoothGatt gatt, int status) {
if (status == BluetoothGatt.GATT_SUCCESS) {
broadcastUpdate(ACTION_GATT_SERVICES_DISCOVERED);
} else {
Log.w(TAG, "onServicesDiscovered received: " + status);
}
}
//readCharacteristic的时候会触发
@Override
public void onCharacteristicRead(BluetoothGatt gatt,
BluetoothGattCharacteristic characteristic,
int status) {
if (status == BluetoothGatt.GATT_SUCCESS) {
broadcastUpdate(ACTION_DATA_AVAILABLE, characteristic);
}
}
//需要先打开notify，设定特征值发生变化时调用此方法
@Override
public void onCharacteristicChanged(BluetoothGatt gatt,
BluetoothGattCharacteristic characteristic) {
broadcastUpdate(ACTION_DATA_AVAILABLE, characteristic);
}
};

private void broadcastUpdate(final String action) {
final Intent intent = new Intent(action);
sendBroadcast(intent);
}

private void broadcastUpdate(final String action,
final BluetoothGattCharacteristic characteristic) {
final Intent intent = new Intent(action);

// This is special handling for the Heart Rate Measurement profile. Data parsing is
// carried out as per profile specifications:
// http://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml if (UUID_HEART_RATE_MEASUREMENT.equals(characteristic.getUuid())) {
int flag = characteristic.getProperties();
int format = -1;
if ((flag & 0x01) != 0) {
format = BluetoothGattCharacteristic.FORMAT_UINT16;
Log.d(TAG, "Heart rate format UINT16.");
} else {
format = BluetoothGattCharacteristic.FORMAT_UINT8;
Log.d(TAG, "Heart rate format UINT8.");
}
final int heartRate = characteristic.getIntValue(format, 1);
Log.d(TAG, String.format("Received heart rate: %d", heartRate));
intent.putExtra(EXTRA_DATA, String.valueOf(heartRate));
sendBroadcast(intent);
} else {
// For all other profiles, writes the data formatted in HEX.
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));
intent.putExtra(EXTRA_DATA, new String(data) + "\n" + stringBuilder.toString());
}*/
if (data[0]=='A') {
return;
}
else{
intent.putExtra(EXTRA_DATA, new String(data));

Log.i("yq","data字符串："+ new String(data));
sendBroadcast(intent);
}
}

}

public class LocalBinder extends Binder {
BluetoothLeService getService() {
return BluetoothLeService.this;
}
}

@Override
public IBinder onBind(Intent intent) {
return mBinder;
}

@Override
public boolean onUnbind(Intent intent) {
// After using a given device, you should make sure that BluetoothGatt.close() is called
// such that resources are cleaned up properly. In this particular example, close() is
// invoked when the UI is disconnected from the Service.
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.
*/
public boolean initialize() {
// For API level 18 and above, get a reference to BluetoothAdapter through
// BluetoothManager.
if (mBluetoothManager == null) {
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.
*/
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()) {
mConnectionState = STATE_CONNECTING;
return true;
} else {
return false;
}
}

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.
mBluetoothGatt = device.connectGatt(this, false, mGattCallback);
Log.d(TAG, "Trying to create a new connection.");
mBluetoothDeviceAddress = address;
mConnectionState = STATE_CONNECTING;
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.
*/
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.
*/
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.
*/
public void readCharacteristic(BluetoothGattCharacteristic characteristic) {
if (mBluetoothAdapter == null || mBluetoothGatt == null) {
Log.w(TAG, "BluetoothAdapter not initialized");
return;
}
mBluetoothGatt.readCharacteristic(characteristic);
}

/**
* Enables or disables notification on a give characteristic.
*
* @param characteristic Characteristic to act on.
* @param enabled If true, enable notification. False otherwise.
*/
public void setCharacteristicNotification(BluetoothGattCharacteristic characteristic,
boolean enabled) {
if (mBluetoothAdapter == null || mBluetoothGatt == null) {
Log.w(TAG, "BluetoothAdapter not initialized");
return;
}
mBluetoothGatt.setCharacteristicNotification(characteristic, enabled);

// This is specific to Heart Rate Measurement.
if (UUID_HEART_RATE_MEASUREMENT.equals(characteristic.getUuid())) {
BluetoothGattDescriptor descriptor = characteristic.getDescriptor(
UUID.fromString(SampleGattAttributes.CLIENT_CHARACTERISTIC_CONFIG));
descriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);
mBluetoothGatt.writeDescriptor(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.
*/
public List<BluetoothGattService> getSupportedGattServices() {
if (mBluetoothGatt == null) return null;

return mBluetoothGatt.getServices();
}
}

连接成功，收到数据。是以广播的形式发送出去
private void broadcastUpdate(final String action,
final BluetoothGattCharacteristic characteristic) {
final Intent intent = new Intent(action);

// This is special handling for the Heart Rate Measurement profile. Data parsing is
// carried out as per profile specifications:
// http://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml if (UUID_HEART_RATE_MEASUREMENT.equals(characteristic.getUuid())) {
int flag = characteristic.getProperties();
int format = -1;
if ((flag & 0x01) != 0) {
format = BluetoothGattCharacteristic.FORMAT_UINT16;
Log.d(TAG, "Heart rate format UINT16.");
} else {
format = BluetoothGattCharacteristic.FORMAT_UINT8;
Log.d(TAG, "Heart rate format UINT8.");
}
final int heartRate = characteristic.getIntValue(format, 1);
Log.d(TAG, String.format("Received heart rate: %d", heartRate));
intent.putExtra(EXTRA_DATA, String.valueOf(heartRate));
sendBroadcast(intent);
} else {
// For all other profiles, writes the data formatted in HEX.
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));
intent.putExtra(EXTRA_DATA, new String(data) + "\n" + stringBuilder.toString());
}*/
if (data[0]=='A') {
return;
}
else{
intent.putExtra(EXTRA_DATA, new String(data));

Log.i("yq","data字符串："+ new String(data));
sendBroadcast(intent);
}
}

}
另外一边就是广播接收数据
// Handles various events fired by the Service.
// ACTION_GATT_CONNECTED: connected to a GATT server.
// ACTION_GATT_DISCONNECTED: disconnected from a GATT server.
// ACTION_GATT_SERVICES_DISCOVERED: discovered GATT services.
// ACTION_DATA_AVAILABLE: received data from the device. This can be a result of read
// or notification operations.
private final BroadcastReceiver mGattUpdateReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
if (BluetoothLeService.ACTION_GATT_CONNECTED.equals(action)) {
mConnected = true;
updateConnectionState(true);
} else if (BluetoothLeService.ACTION_GATT_DISCONNECTED.equals(action)) {
mConnected = false;
updateConnectionState(false);
} else if (BluetoothLeService.ACTION_GATT_SERVICES_DISCOVERED.equals(action)) {
if (mBluetoothLeService.getSupportedGattServices() != null) {
List<BluetoothGattCharacteristic> gattCharacteristics = mBluetoothLeService.getSupportedGattServices()
.get(mBluetoothLeService.getSupportedGattServices().size()-1).getCharacteristics();
if (gattCharacteristics != null) {
final BluetoothGattCharacteristic characteristic = gattCharacteristics.get(gattCharacteristics.size()-1);
final int charaProp = characteristic.getProperties();
if ((charaProp | BluetoothGattCharacteristic.PROPERTY_READ) > 0) {
if (mNotifyCharacteristic != null) {
mBluetoothLeService.setCharacteristicNotification(
mNotifyCharacteristic, true);
mNotifyCharacteristic = null;
}
mBluetoothLeService.readCharacteristic(characteristic);
}
if ((charaProp | BluetoothGattCharacteristic.PROPERTY_NOTIFY) > 0) {
mNotifyCharacteristic = characteristic;
mBluetoothLeService.setCharacteristicNotification(
characteristic, true);
}
}
}
} else if (BluetoothLeService.ACTION_DATA_AVAILABLE.equals(action)) {
displayData(intent.getStringExtra(BluetoothLeService.EXTRA_DATA));
}
}
};
广播的相关的注册以及销毁
@Override
protected void onResume() {
super.onResume();
registerReceiver(mGattUpdateReceiver, makeGattUpdateIntentFilter());
if (mBluetoothLeService != null && !mDeviceAddress.isEmpty()) {
mBluetoothLeService.connect(mDeviceAddress);
}
}

@Override
protected void onPause() {
super.onPause();
unregisterReceiver(mGattUpdateReceiver);
}

@Override
protected void onDestroy() {
super.onDestroy();
if (mBluetoothLeService != null) {
unbindService(mServiceConnection);
mBluetoothLeService = null;
}
}

3、完整的连接类的UI逻辑代码

package com.southgnss.ble;

import java.util.List;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothGattCharacteristic;
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.content.pm.PackageManager;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

import com.southgnss.customwidget.CustomActivity;
import com.southgnss.southgnssserver.R;

public class SouthOtherConnectActivity extends CustomActivity
implements OnClickListener{
private BluetoothLeService mBluetoothLeService;
private String mDeviceName = "";
private String mDeviceAddress = "";
private boolean mConnected = false;
private Button mBtnConnect = null;
private Button mBtnDisConnect = null;
private TextView mTextViewBlueSelect = null;
private BluetoothGattCharacteristic mNotifyCharacteristic;
private View mLinearLayoutEquipmenList;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
getActionBar().setTitle(R.string.sysytem_type_ble_Blue_connect);
getActionBar().setDisplayHomeAsUpEnabled(true);
setContentView(R.layout.layout_main_other_connect);
initView();

}

private void initView() {
mLinearLayoutEquipmenList = findViewById(R.id.linearLayoutEquipmenList);
mLinearLayoutEquipmenList.setOnClickListener(this);
mTextViewBlueSelect = (TextView)findViewById(R.id.textViewBlueSelect);
if (!mDeviceName.isEmpty()) mTextViewBlueSelect.setText(mDeviceName);
if (mDeviceName.isEmpty() && !mDeviceAddress.isEmpty()) mTextViewBlueSelect.setText(mDeviceAddress);
//连接按钮
mBtnConnect = (Button)findViewById(R.id.buttonConnect);
if(mBtnConnect != null){
mBtnConnect.setOnClickListener(this);
mBtnConnect.setEnabled(false);//默认为不可使用
mBtnConnect.setVisibility(View.VISIBLE);
}
mBtnDisConnect = (Button)findViewById(R.id.buttonDisConnect);
mBtnDisConnect.setOnClickListener(this);
mBtnDisConnect.setVisibility(View.GONE);
}

private boolean getBluetoothDivice() {
BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
if (adapter == null) {
// 不支持蓝牙
return false;
}

if (adapter.isEnabled() == false) {
Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
// 设置蓝牙可见性，最多300秒
intent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
startActivity(intent);
return true;
}
return true;
}

@Override
public void onClick(View arg0) {
switch (arg0.getId()) {
case R.id.linearLayoutEquipmenList:
// 检查当前手机是否支持ble 蓝牙,如果不支持退出程序
if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH_LE)
&& android.os.Build.VERSION.SDK_INT > 17) {
ShowTipsInfo(getString(R.string.sysytem_type_ble_Blue_tip));
return;
}

if (!getBluetoothDivice()) {
ShowTipsInfo(getString(R.string.sysytem_type_open_Blue));
return;
}

Intent newIntent = new Intent(this, BLESearchConnectActivity.class);
startActivityForResult(newIntent, 1000);
break;
case R.id.buttonConnect:
if (!mConnected && mBluetoothLeService != null && !mDeviceAddress.isEmpty()) {
mBluetoothLeService.connect(mDeviceAddress);
}
break;
case R.id.buttonDisConnect:
if (mConnected && mBluetoothLeService != null) {
mBluetoothLeService.disconnect();
displayButton(false);
}
break;
default:
break;
}
}

// activity的数据的交互
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (data == null || resultCode != RESULT_OK) return;
switch (requestCode) {
case 1000: //ble蓝牙搜索返回
mDeviceName = data.getExtras().getString(BLESearchConnectActivity.EXTRAS_DEVICE_NAME,"");
mDeviceAddress = data.getExtras().getString(BLESearchConnectActivity.EXTRAS_DEVICE_ADDRESS);
if (!mDeviceName.isEmpty()) mTextViewBlueSelect.setText(mDeviceName);
if (mDeviceName.isEmpty() && !mDeviceAddress.isEmpty()) mTextViewBlueSelect.setText(mDeviceAddress);
mBtnConnect.setEnabled(true);
Intent gattServiceIntent = new Intent(this, BluetoothLeService.class);
bindService(gattServiceIntent, mServiceConnection, BIND_AUTO_CREATE);
break;
default:
break;
}
}

// Code to manage Service lifecycle.
private final ServiceConnection mServiceConnection = new ServiceConnection() {

@Override
public void onServiceConnected(ComponentName componentName, IBinder service) {
mBluetoothLeService = ((BluetoothLeService.LocalBinder) service).getService();
if (!mBluetoothLeService.initialize()) {
finish();
}
mBluetoothLeService.connect(mDeviceAddress);
}

@Override
public void onServiceDisconnected(ComponentName componentName) {
mBluetoothLeService = null;
}
};

// Handles various events fired by the Service.
// ACTION_GATT_CONNECTED: connected to a GATT server.
// ACTION_GATT_DISCONNECTED: disconnected from a GATT server.
// ACTION_GATT_SERVICES_DISCOVERED: discovered GATT services.
// ACTION_DATA_AVAILABLE: received data from the device. This can be a result of read
// or notification operations.
private final BroadcastReceiver mGattUpdateReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
if (BluetoothLeService.ACTION_GATT_CONNECTED.equals(action)) {
mConnected = true;
updateConnectionState(true);
} else if (BluetoothLeService.ACTION_GATT_DISCONNECTED.equals(action)) {
mConnected = false;
updateConnectionState(false);
} else if (BluetoothLeService.ACTION_GATT_SERVICES_DISCOVERED.equals(action)) {
if (mBluetoothLeService.getSupportedGattServices() != null) {
List<BluetoothGattCharacteristic> gattCharacteristics = mBluetoothLeService.getSupportedGattServices()
.get(mBluetoothLeService.getSupportedGattServices().size()-1).getCharacteristics();
if (gattCharacteristics != null) {
final BluetoothGattCharacteristic characteristic = gattCharacteristics.get(gattCharacteristics.size()-1);
final int charaProp = characteristic.getProperties();
if ((charaProp | BluetoothGattCharacteristic.PROPERTY_READ) > 0) {
if (mNotifyCharacteristic != null) {
mBluetoothLeService.setCharacteristicNotification(
mNotifyCharacteristic, true);
mNotifyCharacteristic = null;
}
mBluetoothLeService.readCharacteristic(characteristic);
}
if ((charaProp | BluetoothGattCharacteristic.PROPERTY_NOTIFY) > 0) {
mNotifyCharacteristic = characteristic;
mBluetoothLeService.setCharacteristicNotification(
characteristic, true);
}
}
}
} else if (BluetoothLeService.ACTION_DATA_AVAILABLE.equals(action)) {
displayData(intent.getStringExtra(BluetoothLeService.EXTRA_DATA));
}
}
};

private void displayData(String data) {
if (data != null) {
Log.i("Show", data);
TextView textViewShow = (TextView)findViewById(R.id.textViewShow);
if(textViewShow != null)textViewShow.setText(data);
}
}

private void updateConnectionState(final boolean bConnect) {
runOnUiThread(new Runnable() {
@Override
public void run() {
displayButton(bConnect);
}
});
}

private void displayButton(boolean bConnect){
if (mBtnDisConnect == null || mBtnConnect == null) return;
if (bConnect) {
mBtnConnect.setVisibility(View.GONE);
mBtnDisConnect.setVisibility(View.VISIBLE);
mLinearLayoutEquipmenList.setEnabled(false);
} else {
mBtnDisConnect.setVisibility(View.GONE);
mBtnConnect.setVisibility(View.VISIBLE);
mLinearLayoutEquipmenList.setEnabled(true);
}
}

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;
}

@Override
protected void onResume() {
super.onResume();
registerReceiver(mGattUpdateReceiver, makeGattUpdateIntentFilter());
if (mBluetoothLeService != null && !mDeviceAddress.isEmpty()) {
mBluetoothLeService.connect(mDeviceAddress);
}
}

@Override
protected void onPause() {
super.onPause();
unregisterReceiver(mGattUpdateReceiver);
}

@Override
protected void onDestroy() {
super.onDestroy();
if (mBluetoothLeService != null) {
unbindService(mServiceConnection);
mBluetoothLeService = null;
}
}

}

使用服务来进行低功耗的蓝牙连接，收到数据后使用广播的发送数据。需要用数据的地方进行接收即可。
整个demo的完整代码：

本文demo下载地址：http://download.csdn.net/detail/qq_16064871/9657885