Android 蓝牙BLE （蓝牙成长之路）4

其实前面的除了service大家最关注的的 可能还是 中间设备和外围设备他们之间的连接问题（PS:这也是我最关心的问题，本人曾经在百度知道里面花重财富，结果有人回答，但是他的回答，不过是百度，粘贴复制而已，并没有对我有太多的帮助）

在这里 我也想说   我目前也仅仅是 看到了demo  具体能不能实现传递通信，，还需要 你们的验证（PS:单片机部分 的蓝牙模块，我目前还没有涉及，公司另有负责，我目前做这个只是了解下，已备到时候用的到时候可以不像上次那样，不知所措，一脸迷茫。。（PS:上家公司 的业务是做商城app。。。。跟蓝牙是不是丝毫不搭边。。。。（PS:人生也有涯 ，学而无止境。。。（PS：卧槽  是不是很押韵）））） 好了  废话不多说   ，代码奉上。。。。（再加上一句：有哪位BLE高手懂我上面的问题   不吝赐教，我财富值奉上）   如下： （代码的注释  我有的有道了下。。。原谅我这屌丝想法）

import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Random;import com.example.bledemo.BLEService;import com.example.bledemo.R;import com.example.bledemo.SampleGattAttributes;import android.annotation.SuppressLint;import android.annotation.TargetApi;import android.app.Activity;import android.bluetooth.BluetoothGattCharacteristic;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.Build;import android.os.Bundle;import android.os.IBinder;import android.util.Log;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.ExpandableListView;import android.widget.SimpleExpandableListAdapter;import android.widget.TextView;public class ScanDeviceActivity extends Activity {private final static String TAG = ScanDeviceActivity.class.getSimpleName();public static final String EXTRAS_DEVICE_NAME = "DEVICE_NAME";public static final String EXTRAS_DEVICE_ADDRESS = "DEVICE_ADDRESS";private TextView mConnectionState;private TextView mDataField;private String mDeviceName;private String mDeviceAddress;private ExpandableListView mGattServicesList;  //listview  下拉列表private BLEService mBluetoothLeService;private ArrayList<ArrayList<BluetoothGattCharacteristic>> mGattCharacteristics = new ArrayList<ArrayList<BluetoothGattCharacteristic>>();private boolean mConnected = false;private BluetoothGattCharacteristic mNotifyCharacteristic;private final String LIST_NAME = "NAME";private final String LIST_UUID = "UUID";// Code to manage Service lifecycle.//代码管理服务生命周期private final ServiceConnection mServiceConnection = new ServiceConnection() {@Overridepublic void onServiceConnected(ComponentName componentName,IBinder service) {mBluetoothLeService = ((BLEService.LocalBinder) service).getService();if (!mBluetoothLeService.initialize()) {Log.e(TAG, "Unable to initialize Bluetooth"); //无法初始化蓝牙finish();}// Automatically connects to the device upon successful start-up// initialization.自动连接到设备成功启动初始化mBluetoothLeService.connect(mDeviceAddress);}@Overridepublic 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.//处理各种事件的发射服务。// ACTION_GATT_CONNECTED:连接到一个服务器关贸总协定。// ACTION_GATT_DISCONNECTED:从关贸总协定服务器断开连接。// ACTION_GATT_SERVICES_DISCOVERED:关贸总协定发现服务。// ACTION_DATA_AVAILABLE:从设备接收的数据。这可能是一个//读取的结果//或通知操作。private final BroadcastReceiver mGattUpdateReceiver = new BroadcastReceiver() {@TargetApi(Build.VERSION_CODES.HONEYCOMB)@SuppressLint("NewApi")@Overridepublic void onReceive(Context context, Intent intent) {final String action = intent.getAction();System.out.println("action = " + action);// 连接到一个GATT serverif (BLEService.ACTION_GATT_CONNECTED.equals(action)) {mConnected = true;updateConnectionState(R.string.connected);invalidateOptionsMenu();//从GATT server断开连接} else if (BLEService.ACTION_GATT_DISCONNECTED.equals(action)) {mConnected = false;updateConnectionState(R.string.disconnected);invalidateOptionsMenu();clearUI();//发现GATT services} else if (BLEService.ACTION_GATT_SERVICES_DISCOVERED.equals(action)) {// Show all the supported services and characteristics on the// user interface.displayGattServices(mBluetoothLeService.getSupportedGattServices());// 从设备接收的数据。这可能是一个读取的结果或通知操作。} else if (BLEService.ACTION_DATA_AVAILABLE.equals(action)) {displayData(intent.getStringExtra(BLEService.EXTRA_DATA));}}};// If a given GATT characteristic is selected, check for supported features.// This sample// demonstrates 'Read' and 'Notify' features. See// http://d.android.com/reference/android/bluetooth/BluetoothGatt.html for// the complete  下拉列表的点击事件// list of supported characteristic features.@SuppressLint("NewApi")private final ExpandableListView.OnChildClickListener servicesListClickListner = new ExpandableListView.OnChildClickListener() {@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)@SuppressLint("NewApi")@Overridepublic boolean onChildClick(ExpandableListView parent, View v,int groupPosition, int childPosition, long id) {if (mGattCharacteristics != null) {final BluetoothGattCharacteristic characteristic = mGattCharacteristics.get(groupPosition).get(childPosition);final int charaProp = characteristic.getProperties();System.out.println("charaProp = " + charaProp + ",UUID = "+ characteristic.getUuid().toString());Random r = new Random();if (characteristic.getUuid().toString().equals("0000fff2-0000-1000-8000-00805f9b34fb")) {int time= 0;while((time=r.nextInt(9))<=0){}String data = time+","+"1,,,,,";characteristic.setValue(data.getBytes());mBluetoothLeService.wirteCharacteristic(characteristic);}if (characteristic.getUuid().toString().equals("0000fff1-0000-1000-8000-00805f9b34fb")) {int R = r.nextInt(255);int G = r.nextInt(255);int B = r.nextInt(255);int BB = r.nextInt(100);String data = R + "," + G + "," + B + "," + BB;while (data.length() < 18) {data += ",";}System.out.println(data);characteristic.setValue(data.getBytes());mBluetoothLeService.wirteCharacteristic(characteristic);}if (characteristic.getUuid().toString().equals("0000fff3-0000-1000-8000-00805f9b34fb")) {int R = r.nextInt(255);int G = r.nextInt(255);int B = r.nextInt(255);int BB = r.nextInt(100);String data = R + "," + G + "," + B + "," + BB;while (data.length() < 18) {data += ",";}System.out.println("RT");characteristic.setValue("RT".getBytes());mBluetoothLeService.wirteCharacteristic(characteristic);}if (characteristic.getUuid().toString().equals("0000fff5-0000-1000-8000-00805f9b34fb")) {characteristic.setValue("S".getBytes());mBluetoothLeService.wirteCharacteristic(characteristic);System.out.println("send S");} else {if ((charaProp & BluetoothGattCharacteristic.PROPERTY_READ) > 0) {// If there is an active notification on a// characteristic, clear// it first so it doesn't update the data field on the// user interface.if (mNotifyCharacteristic != null) {mBluetoothLeService.setCharacteristicNotification(mNotifyCharacteristic, false);mNotifyCharacteristic = null;}mBluetoothLeService.readCharacteristic(characteristic);}}if ((charaProp | BluetoothGattCharacteristic.PROPERTY_NOTIFY) > 0) {if (characteristic.getUuid().toString().equals("0000fff6-0000-1000-8000-00805f9b34fb")||characteristic.getUuid().toString().equals("0000fff4-0000-1000-8000-00805f9b34fb")) {System.out.println("enable notification");mNotifyCharacteristic = characteristic;mBluetoothLeService.setCharacteristicNotification(characteristic, true);}}return true;}return false;}};private void clearUI() {mGattServicesList.setAdapter((SimpleExpandableListAdapter) null);mDataField.setText(R.string.no_data);}@TargetApi(Build.VERSION_CODES.HONEYCOMB)@SuppressLint("NewApi")@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.scandevice);final Intent intent = getIntent();mDeviceName = intent.getStringExtra(EXTRAS_DEVICE_NAME);mDeviceAddress = intent.getStringExtra(EXTRAS_DEVICE_ADDRESS);// Sets up UI references.设置界面的引用((TextView) findViewById(R.id.device_address)).setText(mDeviceAddress);mGattServicesList = (ExpandableListView) findViewById(R.id.gatt_services_list);mGattServicesList.setOnChildClickListener(servicesListClickListner);mConnectionState = (TextView) findViewById(R.id.connection_state);mDataField = (TextView) findViewById(R.id.data_value);getActionBar().setTitle(mDeviceName);getActionBar().setDisplayHomeAsUpEnabled(true);Intent gattServiceIntent = new Intent(this, BLEService.class);boolean bll = bindService(gattServiceIntent, mServiceConnection,BIND_AUTO_CREATE);if (bll) {System.out.println("---------------");} else {System.out.println("===============");}}//在整个Activity的生命周期的onResume状态时，注册广播 ，检查BluetoothLeService 的链接情况，如果空，则链接@Overrideprotected void onResume() {super.onResume();//注册广播registerReceiver(mGattUpdateReceiver, makeGattUpdateIntentFilter());if (mBluetoothLeService != null) {final boolean result = mBluetoothLeService.connect(mDeviceAddress);Log.d(TAG, "Connect request result=" + result);}}//取消注册广播@Overrideprotected void onPause() {super.onPause();unregisterReceiver(mGattUpdateReceiver);}//解除 绑定的 service@Overrideprotected void onDestroy() {super.onDestroy();unbindService(mServiceConnection);mBluetoothLeService = null;}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {getMenuInflater().inflate(R.menu.gatt_services, menu);if (mConnected) {menu.findItem(R.id.menu_connect).setVisible(false);menu.findItem(R.id.menu_disconnect).setVisible(true);} else {menu.findItem(R.id.menu_connect).setVisible(true);menu.findItem(R.id.menu_disconnect).setVisible(false);}return true;}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {switch (item.getItemId()) {case R.id.menu_connect:mBluetoothLeService.connect(mDeviceAddress);return true;case R.id.menu_disconnect:mBluetoothLeService.disconnect();return true;case android.R.id.home:onBackPressed();return true;}return super.onOptionsItemSelected(item);}private void updateConnectionState(final int resourceId) {runOnUiThread(new Runnable() {@Overridepublic void run() {mConnectionState.setText(resourceId);}});}private void displayData(String data) {if (data != null) {mDataField.setText(data);}}// Demonstrates how to iterate through the supported GATT@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)// Services/Characteristics.// In this sample, we populate the data structure that is bound to the// ExpandableListView// on the UI./* * 演示了如何遍历所支持的GATT服务/特征。在这个示例中,我们填充数据结构绑定到ExpandableListView UI */@SuppressLint("NewApi")private void displayGattServices(List<BluetoothGattService> gattServices) {if (gattServices == null)return;String uuid = null;String unknownServiceString = getResources().getString(R.string.unknown_service);String unknownCharaString = getResources().getString(R.string.unknown_characteristic);ArrayList<HashMap<String, String>> gattServiceData = new ArrayList<HashMap<String, String>>();ArrayList<ArrayList<HashMap<String, String>>> gattCharacteristicData = new ArrayList<ArrayList<HashMap<String, String>>>();mGattCharacteristics = new ArrayList<ArrayList<BluetoothGattCharacteristic>>();// Loops through available GATT Services.for (BluetoothGattService gattService : gattServices) {HashMap<String, String> currentServiceData = new HashMap<String, String>();uuid = gattService.getUuid().toString();currentServiceData.put(LIST_NAME,SampleGattAttributes.lookup(uuid, unknownServiceString));currentServiceData.put(LIST_UUID, uuid);gattServiceData.add(currentServiceData);ArrayList<HashMap<String, String>> gattCharacteristicGroupData = new ArrayList<HashMap<String, String>>();List<BluetoothGattCharacteristic> gattCharacteristics = gattService.getCharacteristics();ArrayList<BluetoothGattCharacteristic> charas = new ArrayList<BluetoothGattCharacteristic>();// Loops through available Characteristics.for (BluetoothGattCharacteristic gattCharacteristic : gattCharacteristics) {charas.add(gattCharacteristic);HashMap<String, String> currentCharaData = new HashMap<String, String>();uuid = gattCharacteristic.getUuid().toString();currentCharaData.put(LIST_NAME,SampleGattAttributes.lookup(uuid, unknownCharaString));currentCharaData.put(LIST_UUID, uuid);gattCharacteristicGroupData.add(currentCharaData);}mGattCharacteristics.add(charas);gattCharacteristicData.add(gattCharacteristicGroupData);}SimpleExpandableListAdapter gattServiceAdapter = new SimpleExpandableListAdapter(this, gattServiceData,android.R.layout.simple_expandable_list_item_2, new String[] {LIST_NAME, LIST_UUID }, new int[] { android.R.id.text1,android.R.id.text2 }, gattCharacteristicData,android.R.layout.simple_expandable_list_item_2, new String[] {LIST_NAME, LIST_UUID }, new int[] { android.R.id.text1,android.R.id.text2 });mGattServicesList.setAdapter(gattServiceAdapter);}// 广播清单  private static IntentFilter makeGattUpdateIntentFilter() {final IntentFilter intentFilter = new IntentFilter();intentFilter.addAction(BLEService.ACTION_GATT_CONNECTED);intentFilter.addAction(BLEService.ACTION_GATT_DISCONNECTED);intentFilter.addAction(BLEService.ACTION_GATT_SERVICES_DISCOVERED);intentFilter.addAction(BLEService.ACTION_DATA_AVAILABLE);return intentFilter;}}