Question

我正在尝试在后台获取用户位置。我的手机上的一切都很好用（htc一m7），但由于某种原因它不能用于我测试的两个设备：三星Galaxy S3 索尼Xperia Z1

顺便说一下：我把所有东西都添加到了清单中。

这是我的代码： ** BackgroundLocationService **

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;

import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.Bundle;
import android.os.IBinder;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesClient;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.location.LocationClient;
import com.google.android.gms.location.LocationRequest;

public class BackgroundLocationService extends Service implements
  GooglePlayServicesClient.ConnectionCallbacks,
  GooglePlayServicesClient.OnConnectionFailedListener {

IBinder mBinder = new LocalBinder();

private LocationClient mLocationClient;
private LocationRequest mLocationRequest;
// Flag that indicates if a request is underway.
private boolean mInProgress;

private Boolean servicesAvailable = false;

public class LocalBinder extends Binder {
    public BackgroundLocationService getServerInstance() {
        return BackgroundLocationService.this;
    }
}

@Override
public void onCreate() {
    super.onCreate();


    mInProgress = false;
    // Create the LocationRequest object
    mLocationRequest = LocationRequest.create();
    // Use high accuracy
    mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
    // Set the update interval to 5 seconds
    mLocationRequest.setInterval(0);
    // Set the fastest update interval to 1 second
    mLocationRequest.setFastestInterval(1);

    servicesAvailable = servicesConnected();

    /*
     * Create a new location client, using the enclosing class to
     * handle callbacks.
     */
    mLocationClient = new LocationClient(this, this, this);


}

private boolean servicesConnected() {

    // Check that Google Play services is available
    int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);

    // If Google Play services is available
    if (ConnectionResult.SUCCESS == resultCode) {

        return true;
    } else {

        return false;
    }
}

public int onStartCommand (Intent intent, int flags, int startId)
{
    super.onStartCommand(intent, flags, startId);

    if(!servicesAvailable || mLocationClient.isConnected() || mInProgress)
        return START_STICKY;

    setUpLocationClientIfNeeded();
    if(!mLocationClient.isConnected() || !mLocationClient.isConnecting() && !mInProgress)
    {
        mInProgress = true;
        mLocationClient.connect();
    }

    return START_STICKY;
}

/*
 * Create a new location client, using the enclosing class to
 * handle callbacks.
 */
private void setUpLocationClientIfNeeded()
{
    if(mLocationClient == null) 
        mLocationClient = new LocationClient(this, this, this);
}

// Define the callback method that receives location updates


@Override
public IBinder onBind(Intent intent) {
    return mBinder;
}



public void appendLog(String text, String filename)
{       
   File logFile = new File(filename);
   if (!logFile.exists())
   {
      try
      {
         logFile.createNewFile();
      } 
      catch (IOException e)
      {
         // TODO Auto-generated catch block
         e.printStackTrace();
      }
   }
   try
   {
      //BufferedWriter for performance, true to set append to file flag
      BufferedWriter buf = new BufferedWriter(new FileWriter(logFile, true)); 
      buf.append(text);
      buf.newLine();
      buf.close();
   }
   catch (IOException e)
   {
      // TODO Auto-generated catch block
      e.printStackTrace();
   }
}

@Override
public void onDestroy(){
    // Turn off the request flag
    mInProgress = false;
    if(servicesAvailable && mLocationClient != null) {
        //mLocationClient.removeLocationUpdates(callbackIntent);
        // Destroy the current location client
        mLocationClient = null;
    }
    // Display the connection status
    // Toast.makeText(this, DateFormat.getDateTimeInstance().format(new Date()) + ": Disconnected. Please re-connect.", Toast.LENGTH_SHORT).show();
    super.onDestroy();  
}

/*
 * Called by Location Services when the request to connect the
 * client finishes successfully. At this point, you can
 * request the current location or start periodic updates
 */
@Override
public void onConnected(Bundle bundle) {

    // Request location updates using static settings
    Intent intent = new Intent(this, LocationReceiver.class);
      PendingIntent locationIntent = PendingIntent.getBroadcast(getApplicationContext(), 14872, intent, PendingIntent.FLAG_CANCEL_CURRENT);
      mLocationClient.requestLocationUpdates(mLocationRequest, locationIntent);
}

/*
 * Called by Location Services if the connection to the
 * location client drops because of an error.
 */
@Override
public void onDisconnected() {
    // Turn off the request flag
    mInProgress = false;
    // Destroy the current location client
    mLocationClient = null;
    // Display the connection status
    // Toast.makeText(this, DateFormat.getDateTimeInstance().format(new Date()) + ": Disconnected. Please re-connect.", Toast.LENGTH_SHORT).show();
}

/*
 * Called by Location Services if the attempt to
 * Location Services fails.
 */
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
    mInProgress = false;

    /*
     * Google Play services can resolve some errors it detects.
     * If the error has a resolution, try sending an Intent to
     * start a Google Play services activity that can resolve
     * error.
     */
    if (connectionResult.hasResolution()) {

    // If no resolution is available, display an error dialog
    } else {

    }
}


}

** LocationReceiver **

import java.util.List;
import java.util.Locale;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
 import android.util.Log;

import com.google.android.gms.location.LocationClient;

public class LocationReceiver extends BroadcastReceiver {
public static double lat;
public static double alt;
public static String address;


@Override
public void onReceive(Context context, Intent intent) {

    Location location = (Location) intent.getExtras().get(LocationClient.KEY_LOCATION_CHANGED);
    Log.d("New Location Reciver", "location "+location.toString());

    lat = location.getLatitude();
    alt = location.getAltitude();
    address = getAddressByCord(lat, alt, context);
}


public static String getAddressByCord(double lat, double longi, Context context) {

    try {
        Geocoder geo = new Geocoder(context, Locale.getDefault());
        List<Address> addresses = geo.getFromLocation(lat, longi, 1);
        if (addresses.isEmpty()) {
            return "Waiting for Location";
        } else {
            if (addresses.size() > 0) {
                String s = "";
                if (addresses.get(0).getFeatureName() != null)
                    s += addresses.get(0).getFeatureName();
                if (addresses.get(0).getThoroughfare() != null)
                    s += "," +          addresses.get(0).getThoroughfare();
                if (addresses.get(0).getLocality() != null)
                    s += "," + addresses.get(0).getLocality();
                if (addresses.get(0).getAdminArea() != null)
                    s += "," + addresses.get(0).getAdminArea();
                if (addresses.get(0).getCountryName() != null)
                    s += "," +   addresses.get(0).getCountryName();
                return s;
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return "";
}
}

如果有人有任何想法，谢谢！

Answer 1

检查Google Play服务的代码。

private static final int CONNECTION_FAILURE_RESOLUTION_REQUEST = 94378;

private boolean isGooglePlay() {
    int mIsGooglePlayServicesAvailable = GooglePlayServicesUtil
            .isGooglePlayServicesAvailable(context);

    switch (mIsGooglePlayServicesAvailable) {
    case ConnectionResult.SUCCESS:
        return true;
    default:
        Dialog errorDialog = GooglePlayServicesUtil.getErrorDialog(
                mIsGooglePlayServicesAvailable, this,
                CONNECTION_FAILURE_RESOLUTION_REQUEST);
        // If Google Play services can provide an error dialog
        if (errorDialog != null) {
            // Create a new DialogFragment for the error dialog
            ErrorDialogFragment errorFragment = new ErrorDialogFragment();
            // Set the dialog in the DialogFragment
            errorFragment.setDialog(errorDialog);
            // Show the error dialog in the DialogFragment
            errorFragment.show(getSupportFragmentManager(),
                    "Location Updates");
        }
        // case ConnectionResult.SERVICE_MISSING:
        // case ConnectionResult.SERVICE_VERSION_UPDATE_REQUIRED:
        // case ConnectionResult.SERVICE_DISABLED:
        // case ConnectionResult.SERVICE_INVALID:
        // case ConnectionResult.DATE_INVALID:
    }
    return false;
}

/*
 * This is a class used to resolve errors with google play services It is
 * copied code that doesn't run durring normal operation.
 */
public static class ErrorDialogFragment extends DialogFragment {
    // Global field to contain the error dialog
    private Dialog mDialog;

    // Default constructor. Sets the dialog field to null
    public ErrorDialogFragment() {
        super();
        mDialog = null;
    }

    // Set the dialog to display
    public void setDialog(Dialog dialog) {
        mDialog = dialog;
    }

    // Return a Dialog to the DialogFragment.
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        return mDialog;
    }
}

Answer 2

我找到了答案。这是设备自己的定义。该设备未启用应用使用位置。

谢谢你！

LocationClient仅适用于某些设备

2 个答案: