假设，Android 应用正在检测 3 个信标，其默认 UUID 值在范围内。那么，如何设置/更改 Android 中每个信标的名称（以识别每个信标）？
感谢任何建议...谢谢
【问题讨论】：
【讨论】：
this is i got a solution to set different ids for different beacons. and also identifying differnet beacons and sending notifications to the user when app not in foreground.
I initially confused where to change Major and Minor values of beacons.
Simply, i installed Estimote Android app from Playstore
here,
1. Click on Beacons
2. Select one beacon and it displays one more detailed activity in that you can change Values (for me i changed Minor values for all beacon based on my requirement).
So, now Minor values for all beacons changed as per your requirement. After that find the below code
In this below code I am sending notification if App is in background or else i am dirctly updating statuses in Activity main class.
I changed Beacons values as 1,2,3,4.
public class BeaconMyService extends Service {
private static final String TAG = "BeaconMyService";
private final Handler handler = new Handler();
private BeaconManager beaconManager;
private NotificationManager notificationManager;
private static final Region ALL_ESTIMOTE_BEACONS_REGION = new Region("rid",
null, null, null);
private static final int NOTIFICATION_ID = 123;
private Messenger messageHandler;
Bundle extras;
private String notifyMsg ="";
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
try {
extras = intent.getExtras();
messageHandler = (Messenger) extras.get("MESSENGER");
} catch (Exception e) {
// TODO: handle exception
}
Log.e(TAG, "Called=============");
if (beaconManager.isBluetoothEnabled()) {
connectToService();
}
return Service.START_NOT_STICKY;
}
private void connectToService() {
beaconManager.connect(new BeaconManager.ServiceReadyCallback() {
@Override
public void onServiceReady() {
try {
beaconManager.startRanging(ALL_ESTIMOTE_BEACONS_REGION);
} catch (RemoteException e) {
Log.e("Myservice",
"Cannot start ranging, something terrible happened");
Log.e("", "Cannot start ranging", e);
}
}
});
}
@Override
public void onCreate() {
super.onCreate();
notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
beaconManager = new BeaconManager(this);
beaconManager.setRangingListener(new BeaconManager.RangingListener() {
@Override
public void onBeaconsDiscovered(Region region,
final List<Beacon> beacons) {
// Note that beacons reported here are already sorted by
// estimated
// distance between device and beacon.
for (int index = 0; index < beacons.size(); index++) {
Beacon beacon = beacons.get(index);
if (beacon != null) {
if (beacons.size() > 0) {
if (Utils.computeAccuracy(beacons.get(0)) < 1.0) {
try {
switch (beacons.get(0).getMinor()) {
case 1:
if (isAppInForeground(getApplicationContext())) {
Message message = Message.obtain();
message.arg1 = beacons.get(0)
.getMinor();
try {
messageHandler.send(message);
} catch (RemoteException e) {
e.printStackTrace();
}
} else {
postNotification(beacons.get(0)
.getMinor()
+ ". Welcome to Media Lab");
}
break;
case 2:
if (isAppInForeground(getApplicationContext())) {
Message message = Message.obtain();
message.arg1 = beacons.get(0)
.getMinor();
try {
messageHandler.send(message);
} catch (RemoteException e) {
e.printStackTrace();
}
} else {
postNotification(beacons.get(0)
.getMinor()
+ ". Welcome to Gaming Zone");
}
break;
case 3:
if (isAppInForeground(getApplicationContext())) {
Message message = Message.obtain();
message.arg1 = beacons.get(0)
.getMinor();
try {
messageHandler.send(message);
} catch (RemoteException e) {
e.printStackTrace();
}
} else {
postNotification(beacons.get(0)
.getMinor()
+ ". Welcome to eLearing Education");
}
break;
case 4:
if (isAppInForeground(getApplicationContext())) {
Message message = Message.obtain();
message.arg1 = beacons.get(0)
.getMinor();
try {
messageHandler.send(message);
} catch (RemoteException e) {
e.printStackTrace();
}
} else {
postNotification(beacons.get(0)
.getMinor()
+ ". Welcome to Retail Department");
}
break;
default:
break;
}
} catch (Exception e) {
// TODO: handle exception
}
}else{
if (isAppInForeground(getApplicationContext())) {
Message message = Message.obtain();
message.arg1 = 10;
try {
messageHandler.send(message);
} catch (RemoteException e) {
e.printStackTrace();
}
}
// Utils.computeAccuracy(beacons.get(0))
}
}
}
}
}
});
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onDestroy() {
super.onDestroy();
}
// ---helper method to determine if the app is in
// the foreground---
public static boolean isAppInForeground(Context context) {
List<RunningTaskInfo> task = ((ActivityManager) context
.getSystemService(Context.ACTIVITY_SERVICE)).getRunningTasks(1);
if (task.isEmpty()) {
return false;
}
Log.e(TAG + "isAppInForeground-----",
""
+ task.get(0).topActivity.getPackageName()
.equalsIgnoreCase(context.getPackageName()));
return task.get(0).topActivity.getPackageName().equalsIgnoreCase(
context.getPackageName());
}
private void postNotification(String msg) {
if(!notifyMsg.equalsIgnoreCase(msg)){
notifyMsg = msg;
Intent notifyIntent = new Intent(BeaconMyService.this,
MainActivity.class);
notifyIntent.putExtra("content", msg);
notifyIntent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent pendingIntent = PendingIntent.getActivities(
BeaconMyService.this, 0, new Intent[] { notifyIntent },
PendingIntent.FLAG_UPDATE_CURRENT);
Notification notification = new Notification.Builder(
BeaconMyService.this).setSmallIcon(R.drawable.ic_launcher)
.setContentTitle("Monitoring Region").setContentText(msg)
.setAutoCancel(true).setContentIntent(pendingIntent).build();
notification.defaults |= Notification.DEFAULT_SOUND;
notification.defaults |= Notification.DEFAULT_LIGHTS;
notificationManager.notify(NOTIFICATION_ID, notification);
}
}
}
Coming to Activity for updating status is this
package com.hcl.beacons_notification_ex;
import android.app.Activity;
import android.app.ActivityManager;
import android.app.ActivityManager.RunningServiceInfo;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.Messenger;
import android.view.Menu;
import android.view.View;
import android.widget.TextView;
public class MainActivity extends Activity {
static TextView tv_items;
public static Handler messageHandler;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tv_items = (TextView)findViewById(R.id.tv_items);
messageHandler = new MessageHandler();
}
public static class MessageHandler extends Handler {
@Override
public void handleMessage(Message message) {
int state = message.arg1;
switch (state) {
case 1:
tv_items.setText("Welcome to Media Lab");
break;
case 2:
tv_items.setText("Welcome to Gaming Zone");
break;
case 3:
tv_items.setText("Welcome to eLearing Education");
break;
case 4:
tv_items.setText("Welcome to Retail Department");
break;
default:
tv_items.setText("Going far to Range");
break;
}
}
}
@Override
protected void onStart() {
// TODO Auto-generated method stub
super.onStart();
Intent i = new Intent(getApplicationContext(), BeaconMyService.class);
if(isMyServiceRunning(BeaconMyService.class)){
}else{
i.putExtra("MESSENGER", new Messenger(messageHandler));
startService(i);
// startService(i);
}
try {
if (getIntent().getExtras() != null) {
tv_items.setText(""
+ getIntent().getExtras().getString("content"));
}
} catch (Exception e) {
// TODO: handle exception
}
}
private boolean isMyServiceRunning(Class<?> serviceClass) {
ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
for (RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
if (serviceClass.getName().equals(service.service.getClassName())) {
return true;
}
}
return false;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
【讨论】：
首先你需要estimote sdk 然后你可以创建一个像这样的 beaconDetection 服务
public class BeaconMyService extends Service
{
private static final String TAG = "BeaconMyService";
private final Handler handler = new Handler();
private BeaconManager beaconManager;
private static final Region ALL_ESTIMOTE_BEACONS_REGION = new Region("rid", null, null, null);
@Override
public int onStartCommand(Intent intent, int flags, int startId)
{
if (beaconManager.isBluetoothEnabled())
{
connectToService();
}
return Service.START_NOT_STICKY;
}
private void connectToService()
{
beaconManager.connect(new BeaconManager.ServiceReadyCallback()
{
@Override
public void onServiceReady()
{
try
{
beaconManager.startRanging(ALL_ESTIMOTE_BEACONS_REGION);
}
catch (RemoteException e)
{
Log.e("Myservice", "Cannot start ranging, something terrible happened");
Log.e("", "Cannot start ranging", e);
}
}
});
}
@Override
public void onCreate()
{
super.onCreate();
beaconManager = new BeaconManager(this);
beaconManager.setRangingListener(new BeaconManager.RangingListener()
{
@Override
public void onBeaconsDiscovered(Region region, final List<Beacon> beacons)
{
// Note that beacons reported here are already sorted by
// estimated
// distance between device and beacon.
for (int index = 0; index < beacons.size(); index++)
{
Beacon beacon = beacons.get(index);
if (beacon != null)
{
Log.v("Beacon MacAddress", beacon.getMacAddress() + "");
if (!Constants.BEACONSDETECTEDLIST.containsKey(beacon.getMacAddress()))
{//Constants.BEACONSDETECTEDLIST is your list of beacon mac addresses
//public static HashMap<String, Long> BEACONSDETECTEDLIST = new HashMap<String, Long>();
//to check if beacon is detected for the first time
if (Constants.BEACON1.equalsIgnoreCase(beacon.getMacAddress()))
{//Constants.BEACON1 is mac address of beacon 1 assigned in constants
Constants.BEACONSDETECTEDLIST.put(beacon.getMacAddress(), System.currentTimeMillis());
handler.postDelayed(beacon1Detection, 2000);
}
else if (Constants.BEACON2.equalsIgnoreCase(beacon.getMacAddress()))
{
Constants.BEACONSDETECTEDLIST.put(beacon.getMacAddress(), System.currentTimeMillis());
handler.postDelayed(beacon2Detection, 2000);
}
}
else
{/*Do Nothing*/
}
}
}
}
});
}
private Runnable beacon1Detection = new Runnable()
{
public void run()
{
beacon1Info();
}
};
private Runnable beacon2Detection = new Runnable()
{
public void run()
{
beacon2Info();
}
};
private void beacon1Info()
{
Intent intent = new Intent(Constants.BEACON1BROADCAST_ACTION);
sendBroadcast(intent);
}//in Constants
//public static final String BEACON1BROADCAST_ACTION = "beacon1Action";
private void beacon2Info()
{
Intent intent = new Intent(Constants.BEACON2BROADCAST_ACTION);
sendBroadcast(intent);
}// in Constants
//public static final String BEACON2BROADCAST_ACTION = "beacon2Action";
@Override
public IBinder onBind(Intent intent)
{
return null;
}
@Override
public void onDestroy()
{
handler.removeCallbacks(beacon1Detection);
handler.removeCallbacks(beacon2Detection);
super.onDestroy();
}
}
最后你需要一个 BeaconBroadcastReceiver 来接收服务中的广播并打开相应的 Activity
public class BeaconBroadCastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Constants.BEACON1BROADCAST_ACTION)) {
Intent intent2 = new Intent(context, Beacon1Layout.class);
context.startActivity(intent2);
} else if (intent.getAction().equals(Constants.BEACON2BROADCAST_ACTION)) {
Intent intent2 = new Intent(context, Beacon2Layout.class);
context.startActivity(intent2);
}
}
}
希望对你有帮助，祝你好运:)
【讨论】：