android - Android バックグラウンドサービスで場所を取得

Question

バックグラウンドサービスを開始できるアプリを作成しました。このサービスの目的は、電話で使用されているアプリを監視し、このデータをタイムスタンプと座標と共に電話の SQLite に保存することです。

アプリを見つけてタイムスタンプで保存する部分は正常に機能します。しかし、場所のある部分は機能しません。以前にロケーションリスナーと仕事をしたことがありますが、何時間も何度も試みた後、あきらめました。locationlistener をどこに配置すればよいかよくわかりません。今、新しい内部クラスを作成しましたが、それを実行すると、Looper.prepare() を実行する必要があるというエラーが表示されますが、それは役に立ちません。次に、スレッドごとに作成できるルーパーは1つだけであると言います。

私は今、私が何をしようとしても何かが間違っていると感じているので、皆さんの何人かが私を助けてくれることを願っています.

package com.dtu.applogger;

import java.util.Calendar;
import java.util.Timer;
import java.util.TimerTask;

import android.app.Activity;
import android.app.ActivityManager;
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.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.location.LocationProvider;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.IBinder;
import android.os.Looper;
import android.util.Log;
import android.widget.Toast;


public class loggerService extends Service{
DBAdapter dbadapter;
public MyLocationListener mMyLocationListener;
private NotificationManager mNM;
private int NOTIFICATION = 10002; //Any unique number for this notification
protected String latitude;
protected String longitude;
int counter= 0;
static final int UPDATE_INTERVAL= 5000;
private Timer timer= new Timer();
public loggerService() {
    // TODO Auto-generated constructor stub

}

@Override
public IBinder onBind(Intent intent) {
    // TODO Auto-generated method stub

    return null;
}
private void showNotification() {
    // In this sample, we'll use the same text for the ticker and the expanded notification
    CharSequence text = "TITLE";

    // Set the icon, scrolling text and timestamp
    Notification notification = new Notification(R.drawable.call_log, text, System.currentTimeMillis());

    // The PendingIntent to launch our activity if the user selects this notification
    PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
            new Intent(this, MainActivity.class), 0);

    // Set the info for the views that show in the notification panel.
    notification.setLatestEventInfo(this, "Service is running", text, contentIntent);

    // Send the notification.
    mNM.notify(NOTIFICATION, notification);
}
public int onStartCommand(Intent intent, int flags, int startId){
    //showNotification();
    new DoBackgroundTask().execute();
    Toast.makeText(this,  "Service started", Toast.LENGTH_LONG).show();
    return START_STICKY;

}

private class DoBackgroundTask extends AsyncTask{
    String oldPackageName = "com.dtu.applogger";
    DBAdapter dbadapter = new DBAdapter(loggerService.this);

    public DoBackgroundTask() {

    }
    protected String findApp(){
        final LocationManager lm = (LocationManager) loggerService.this.getSystemService(Context.LOCATION_SERVICE);
        ActivityManager am = (ActivityManager) loggerService.this.getSystemService(Activity.ACTIVITY_SERVICE);
        String packageName = am.getRunningTasks(1).get(0).topActivity.getPackageName();

        if(!packageName.equals(oldPackageName) && !packageName.equals("com.dtu.applogger")){
            //save oldPackageName and packageName in DB     
            mMyLocationListener = new MyLocationListener();
            lm.requestLocationUpdates(LocationManager.PASSIVE_PROVIDER, 0, 0, mMyLocationListener);
            String lat = latitude;
            String lng = longitude;

            String mydate = java.text.DateFormat.getDateTimeInstance().format(Calendar.getInstance().getTime());
            String txt = packageName + " : " + mydate;
            dbadapter.open();
            if(packageName.equals("com.android.launcher")){
                dbadapter.saveLog(mydate, oldPackageName, lat, lng);
            }else{
                dbadapter.saveLog(mydate, packageName, lat, lng);
            }

            dbadapter.close();
            oldPackageName = packageName;
            return txt;
        }
        if(packageName.equals(oldPackageName)){
            return null;
        }
        return null;
    }
    @Override
    protected Object doInBackground(Object... params) {
        timer.scheduleAtFixedRate(new TimerTask() {
            public void run() {
                String txt = findApp();
                if(txt != null){
                    Log.d("APP OPEN", "===== " + txt.toString());
                }
            Log.d("loggerService", String.valueOf(++counter));
            }
            }, 0, UPDATE_INTERVAL);

        // TODO Auto-generated method stub
        return null;
    }
}

private class MyLocationListener implements android.location.LocationListener{

    @Override
    public void onLocationChanged(Location location) {
        int lat = (int) (location.getLatitude()*1E6);
        int lng = (int) (location.getLongitude()*1E6);
        latitude = Integer.toString(lat);
        longitude = Integer.toString(lng);
        // TODO Auto-generated method stub

    }

    @Override
    public void onProviderDisabled(String provider) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onProviderEnabled(String provider) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
        // TODO Auto-generated method stub

    }

}

public void onDestroy(){
    super.onDestroy();
    timer.cancel();

    Toast.makeText(this, "Service Destroyed", Toast.LENGTH_LONG).show();

}

}

score 1 · Accepted Answer

あなたは物事を複雑にしすぎます.doInBackgroundはすでにスレッドにあるので、以下のコードはOKです.

@Override
protected Object doInBackground(Object... params) 
{
            while (!isCancelled())
            {
               String txt = findApp();
               if(txt != null)
               {
                    Log.d("APP OPEN", "===== " + txt.toString());
                }
                Log.d("loggerService", String.valueOf(++counter));
                try
                {
                    Thread.sleep(UPDATE_INTERVAL);
                }
                catch (InterruptedException e1)
                {

                }
            }
    return null;
}

score 0 · Accepted Answer

「DoOnBackgroundTasK」で実装されている LocationListener を使用して解決し、他の内部クラス MyLocationListener を削除しました。私はそれを試しましたが、今はうまくいきます。NETWORK_PROVIDER のみを使用していますが、PASSIVE_PROVIDER を使用すると、RuntimeException が発生します。それに対する説明は何ですか？

コードを貼り付けました

 public class loggerService extends Service{
DBAdapter dbadapter;

private NotificationManager mNM;
private int NOTIFICATION = 10002; //Any unique number for this notification
protected String latitude;
protected String longitude;
int counter= 0;
static final int UPDATE_INTERVAL= 5000;
private Timer timer= new Timer();
public loggerService() {
    // TODO Auto-generated constructor stub

}

@Override
public IBinder onBind(Intent intent) {
    // TODO Auto-generated method stub

    return null;
}
private void showNotification() {
    // In this sample, we'll use the same text for the ticker and the expanded notification
    CharSequence text = "TITLE";

    // Set the icon, scrolling text and timestamp
    Notification notification = new Notification(R.drawable.call_log, text, System.currentTimeMillis());

    // The PendingIntent to launch our activity if the user selects this notification
    PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
            new Intent(this, MainActivity.class), 0);

    // Set the info for the views that show in the notification panel.
    notification.setLatestEventInfo(this, "Service is running", text, contentIntent);

    // Send the notification.
    mNM.notify(NOTIFICATION, notification);
}
public int onStartCommand(Intent intent, int flags, int startId){
    //showNotification();
    new DoBackgroundTask().execute();
    Toast.makeText(this,  "Service started", Toast.LENGTH_LONG).show();
    return START_STICKY;

}

private class DoBackgroundTask extends AsyncTask implements LocationListener{
    String oldPackageName = "com.dtu.applogger";
    DBAdapter dbadapter = new DBAdapter(loggerService.this);

    public DoBackgroundTask() {

    }
    protected String findApp(){

        ActivityManager am = (ActivityManager) loggerService.this.getSystemService(Activity.ACTIVITY_SERVICE);
        String packageName = am.getRunningTasks(1).get(0).topActivity.getPackageName();

        if(!packageName.equals(oldPackageName) && !packageName.equals("com.dtu.applogger")){
            //save oldPackageName and packageName in DB     
            String lat = latitude;
            String lng = longitude;

            String mydate = java.text.DateFormat.getDateTimeInstance().format(Calendar.getInstance().getTime());
            String txt = packageName + " : " + mydate;
            dbadapter.open();
            if(packageName.equals("com.android.launcher")){
                dbadapter.saveLog(mydate, oldPackageName, lat, lng);
                Log.d("LATITUDE ", lat.toString());
                Log.d("LONGITUDE ", lng.toString());
            }else{
                dbadapter.saveLog(mydate, packageName, lat, lng);
            }

            dbadapter.close();
            oldPackageName = packageName;
            return txt;
        }
        if(packageName.equals(oldPackageName) || packageName.equals("com.dtu.applogger")){
            return null;
        }
        return null;
    }
    protected void onPreExecute()
    {
        final LocationManager lm = (LocationManager) loggerService.this.getSystemService(Context.LOCATION_SERVICE);

//
//REQUEST LOCATION UPDATE WORKS WITH NETWORK BUT NOT WITH PASSIVE???
//

        lm.requestLocationUpdates(LocationManager.PASSIVE_PROVIDER, 0, 0, this);
    }
    @Override
    protected Object doInBackground(Object... params) {
        while (!isCancelled()){
                String txt = findApp();
                if(txt != null){
                    Log.d("APP OPEN", "===== " + txt.toString());
                }
            Log.d("loggerService", String.valueOf(++counter));
            try
            {
                Thread.sleep(UPDATE_INTERVAL);
            }
            catch (InterruptedException e1){
            }
        }

        // TODO Auto-generated method stub
        return null;
    }
    @Override
    public void onLocationChanged(Location location) {

        latitude = String.valueOf(location.getLatitude());
        longitude = String.valueOf(location.getLongitude());

    }
    @Override
    public void onProviderDisabled(String provider) {
        // TODO Auto-generated method stub

    }
    @Override
    public void onProviderEnabled(String provider) {
        // TODO Auto-generated method stub

    }
    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
        // TODO Auto-generated method stub

    }
}


public void onDestroy(){
    super.onDestroy();
    timer.cancel();

    Toast.makeText(this, "Service Destroyed", Toast.LENGTH_LONG).show();

}

}

android - Android バックグラウンド サービスで場所を取得

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android - Android バックグラウンドサービスで場所を取得