In one of my applications I am dynamically enabling the GPS system
setting based on a user's request. My problem is that I also have a
LocationListener which doesn't pick up this change. If the device is
restarted or the system settings Activity is brought up the
LocationListener kicks in -- the onProviderEnabled() method is called.
So.. it seems pretty obvious that I'm not notifying the system
correctly of my changes. I have tried sending a broadcast from both
the normal context and the application context. I thought this would
be fairly straight forward, but it has proven to be rather
frustrating. I put together a small test activity to demonstrate my
problem.
Any help is greatly appreciated!
Regards,
Ken
Here is my test Activity:
---------------------------------------------------
package com.example;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.provider.Settings;
import android.util.Log;
public class TestActivity extends Activity {
LocationListener locListener;
LocationManager locManager;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.test_activity);
locListener = new MyLocationListener();
locManager = (LocationManager)getSystemService
(Context.LOCATION_SERVICE);
locManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0,
0, locListener);
if(!locManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
Settings.System.putString(getContentResolver
(),Settings.System.LOCATION_PROVIDERS_ALLOWED,
LocationManager.GPS_PROVIDER);
Intent intent = new Intent(Intent.ACTION_PROVIDER_CHANGED);
sendBroadcast(intent);
}
}
private class MyLocationListener implements LocationListener
{
public MyLocationListener() {
Log.d("test", "MyLocationListener()");
}
public void onLocationChanged(Location loc) {
Log.d("test", loc.getLatitude() + "/" + loc.getLongitude());
}
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
Log.d("test", "*** onProviderDisabled (" + provider + ")
***");
}
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
Log.d("test", "*** onProviderEnabled (" + provider + ")
***");
}
public void onStatusChanged(String provider, int status,
Bundle extras) {
// TODO Auto-generated method stub
Log.d("test", "*** onStatusChanged ***");
Log.d("test", "provider = " + provider + "\tstatus = " +
status);
}
}
}
Here is the manifest:
---------------------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android";
package="com.example">
<uses-permission
android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission
android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.WRITE_SETTINGS" />
<application android:label="test">
<activity android:name="TestActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category
android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
</manifest>
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