我是一名Android初学者,正在Android上测试一些Estimote-Beacons。我的项目使用了Estimote库,但现在我想尝试更开放的altbeacon-library,但是我有几个问题。
我的应用程序的功能应该是这样的: 应用程序启动时,BeaconApplication应启动BeaconsMonitoringService。应监测两个区域。如果输入了某个区域,则该服务应使用广播管理器发送意图。使用intent的信息,应在main-activity中选中/取消选中复选框。 当应用程序被杀或蓝牙状态发生变化时,服务也会启动。
问题是:
显示所有调试日志,但onBeaconServiceConnect的“已输入”和“左”除外。 任何帮助,将不胜感激。希望它只是一个愚蠢/新手的错误,它通常工作。 :)
这是我的BeaconApplication代码:
package de.mcd.presencealtbeacon;
import android.app.Application;
import android.content.Intent;
import org.altbeacon.beacon.BeaconManager;
public class BeaconApplication extends Application {
private BeaconManager beaconManager = null;
@Override
public void onCreate() {
super.onCreate();
beaconManager = BeaconManager.getInstanceForApplication(this);
startService(new Intent(getApplicationContext(), BeaconsMonitoringService.class));
}
public BeaconManager getBeaconManager() {
if (beaconManager == null) {
beaconManager = BeaconManager.getInstanceForApplication(this);
}
return beaconManager;
}
}
以下是BeaconsMonitoringService的代码:
package de.mcd.presencealtbeacon;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.os.IBinder;
import android.os.RemoteException;
import android.support.v4.content.LocalBroadcastManager;
import android.util.Log;
import org.altbeacon.beacon.BeaconConsumer;
import org.altbeacon.beacon.BeaconManager;
import org.altbeacon.beacon.Identifier;
import org.altbeacon.beacon.MonitorNotifier;
import org.altbeacon.beacon.Region;
import org.altbeacon.beacon.BeaconParser;
public class BeaconsMonitoringService extends Service implements BeaconConsumer {
private static final String UUID = "1234567-1234-1234-1234-123456789012";
private static final Region Room = new Region("mcd", Identifier.parse(UUID), Identifier.fromInt(1), null);
private static final Region Kitchen = new Region("mcd", Identifier.parse(UUID), Identifier.fromInt(2), null);
private static final String TAG = "BEACON";
private BeaconManager beaconManager;
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onCreate() {
Log.d(TAG, "Beacons monitoring service started");
}
@Override
public void onDestroy() {
Log.d(TAG, "Beacons monitoring service destroyed");
}
public void onBeaconServiceConnect(){
beaconManager.setMonitorNotifier(new MonitorNotifier() {
@Override
public void didEnterRegion(Region region) {
Log.d(TAG, "Entered");
if (region.getId2() == Identifier.fromInt(1)) {
postNotification("Room", "Entered");
intent("1-1");
} else {
postNotification("Kitchen", "Entered");
intent("2-1");
}
}
@Override
public void didExitRegion(Region region) {
Log.d(TAG, "Left");
if (region.getId2() == Identifier.fromInt(1)) {
postNotification("Room", "Left");
intent("1-2");
} else {
postNotification("Kitchen", "Left");
intent("2-2");
}
}
@Override
public void didDetermineStateForRegion(int state, Region region) {
Log.d(TAG, "Don't know what it's useful for" + state);
}
});
try {
Log.d(TAG, "Service ready");
beaconManager.startMonitoringBeaconsInRegion(Room);
beaconManager.startMonitoringBeaconsInRegion(Kitchen);
} catch (RemoteException e) {
Log.e(TAG, "Cannot start ranging", e);
}
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.d(TAG, "onStart Start");
BeaconApplication app = (BeaconApplication)getApplication();
beaconManager = app.getBeaconManager();
beaconManager.setBackgroundScanPeriod(1100l);
beaconManager.setBackgroundBetweenScanPeriod(10000l);
beaconManager.getBeaconParsers ().add ( new BeaconParser ().setBeaconLayout (
"m:2-3=0215,i:4-19,i:20-21,i:22-23,p:24-24" ) );
beaconManager.bind(this);
Log.d(TAG, "onStart End");
Notification noti = new Notification.Builder(this)
.setContentTitle("Started")
.setContentText("Here we go")
.setSmallIcon(R.mipmap.ic_launcher)
.build();
NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
mNotificationManager.cancel(2);
mNotificationManager.notify(1, noti);
return START_STICKY;
}
private void postNotification(String room, String action) {
Intent notificationIntent = new Intent(BeaconsMonitoringService.this, MyActivity.class);
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
| Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent intent = PendingIntent.getActivity(BeaconsMonitoringService.this, 0,
notificationIntent, 0);
Notification noti = new Notification.Builder(BeaconsMonitoringService.this)
.setContentTitle(room)
.setContentText(action)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentIntent(intent)
.build();
NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
mNotificationManager.cancel(2);
mNotificationManager.notify(1, noti);
}
private void intent (String code){
Intent intent = new Intent("statechanged");
intent.putExtra("info", code);
LocalBroadcastManager.getInstance(BeaconsMonitoringService.this).sendBroadcast(intent);
}
}
答案 0 :(得分:1)
一个问题是Region
构造函数的第一个参数是一个唯一的字符串,用于标识库的Region。每个区域必须具有唯一的字符串,否则当您开始测距或监视时,它将替换具有相同标识符的另一个区域。下面的代码对两个区域使用相同的标识符:
private static final Region Room = new Region("mcd", Identifier.parse(UUID), Identifier.fromInt(1), null);
private static final Region Kitchen = new Region("mcd", Identifier.parse(UUID), Identifier.fromInt(2), null);
这会导致第二个受监控区域替换下面代码中的第一个:
beaconManager.startMonitoringBeaconsInRegion(Room);
beaconManager.startMonitoringBeaconsInRegion(Kitchen);
要解决此问题,请将区域设置更改为:
private static final Region Room = new Region("mcd1", Identifier.parse(UUID), Identifier.fromInt(1), null);
private static final Region Kitchen = new Region("mcd2", Identifier.parse(UUID), Identifier.fromInt(2), null);
在更基础的层面上,构建一个在后台自动启动的后台服务是一个非常先进的任务,可以解决一个自我描述的初学者。可能还有许多其他问题。显而易见的看代码。 Android Beacon Library已经设计为在后台自动启动并扫描信标,扫描间隔随应用从前景变为背景而适当变化。
您可以在参考应用here.
的Application类中看到一个简单的示例我建议您不要使用BeaconMoinitoringService
,而是将参考应用的Application类中的代码复制到BeaconApplication
类中。然后,您可以将代码移到didEnterRegion
课程didExitRegion
课程的BeaconApplication
和BeaconMonitoringService
方法中。
如果你更喜欢接受定制服务,我相信这是可能的,但这可能是一个艰难的攀登。