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使用altbeacon android库在服务中无监控且无扫描周期更改

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我是一个Android初学者,正在测试Android上的一些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:当应用程序启动时,BeaconApplication应该启动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:

  • 未检测到任何区域

  • 未设置扫描周期

显示所有调试日志,但onBeaconServiceConnect中的“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 . :)

Here ist my code of the BeaconApplication:

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;
    }
}

Here is the code of the BeaconsMonitoringService:

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);
    }
}

1 回答

  • 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 . 以下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视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);
    

    On a more fundamental level, building a background service that starts up automatically in the background is a pretty advanced task to tackle for a self-described beginner. 可能还有很多其他问题在查看代码时并不明显 . 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 .

    你可以在参考应用程序here.的Application类中看到一个简单的例子 .

    我建议您不要使用 BeaconMoinitoringService ,而是将参考应用程序的Application类中的代码复制到 BeaconApplication 类中 . 然后,您可以将代码移动到 BeaconMonitoringService 类的 BeaconApplication 类的 didEnterRegiondidExitRegion 方法中 .

    如果您更喜欢使用定制服务,我相信这是可能的,但这可能是一个艰难的攀登 .

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