Android :: Retrieving GRP Coordinates - Getting Errors With GetLastKnownLocation And RequestLocationUpdates
May 2, 2010
I tried using both getLastKnownLocation and requestLocationUpdates to get GPS coordinates from emulator.
CODE:......
After that, i tried:
CODE:............
-or-
CODE:.............
-or-
CODE:........
I get the same error for all three:
CODE:.............
I have set the GPS coordinates in DDMS Location Controls, also set coordinates using telnet and geo fix.
My manifest file has all permissions, dont know why im getting errors
CODE:.......................
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Jun 30, 2010
I've been trying to write a little application that recognizes custom events in Android: you hold your finger over a TextView for a certain length of time, and it changes color.I'm using the MotionEvent coordinates and checking if they are within the bounds of a particular TextView, which is within a table.I am just attaching the onTouch listener to the table within the activity.But I get weird errors: the coordinates seem to be off by one view (i.e. if I touch the view below the view above reacts); or sometimes one will react, and the other will not. Any idea what might be going on?
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Aug 5, 2010
i'm created an application where it consists of 3d rotating cube I want to move the cube with respect to the drag on the screen.In the on touch Listener I'm able to get the x,y coordinates but i don Know how to make those coordinates to map to 3d space.
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Apr 20, 2010
In requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this); if I put time interval and distance as zero, will this work, or shall I need to give a value greater than zero.
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Oct 21, 2009
When i use LocationManager.requestLocationUpdates API and send geo fix form the shell (the one you obtain using telnet localhost 5554), device emulator receives location updates only two times and then get stalled. Have anyone faced and solved this issue?Also i can't send updates from DDMS perspective in eclipse. When i send manual location updates using Emulator control view nothing happens in emulator. In devices view running emulator is shown as online and i can see logs from it in LogCat view.
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Jun 25, 2010
you can subscribe to requestLocationUpdates via two ways one by specifing a PendingIntent the other is by using a LocationListener. When is advised the one and when the other?
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Sep 8, 2010
in order to save some battery, I was wondering what happens if an activity registers a requestLocationUpdates and then the user (or the os) puts it in background or kills it. Will the location manger still be active and then will the pending intent still be fired? In other words, will the location manager still be alive even if its lancher does not exist anymore? I'd really love this scenario because allows me to link an intent service that handles the location updates without bothering of have something always running waiting for good news from location.
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Nov 22, 2010
I set locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 60000, 0f, this);
It has an odd behavior, locationChanged gets called every second instead of any time close to 1 minute. Secondly, locationChanged gets called every second for like 10 seconds, then stops completely, the gps satalites icon disappears, then only resumes again when the screen returns from display timeout.
what's wrong? I'm currently on android 1.5.
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Dec 2, 2009
I have read all the posts about this topic and I understand the arguments being made. However, I would like to know how Google Maps can return my *current* location yet while driving the same stretch of road, the Android API often (not always) gives me a last known location that was miles back. I need to be able to rely on the API to provide me with a *current location* and I have tried all the tricks being proposed here and elsewhere. Is there lower level code someplace that could ping the phone's radio for a "fresh fix?"
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Nov 12, 2010
In one application, when an activity start I use the getLastKnownLocation to get the last know position, using something like: Location position=mlocManager.getLastKnownLocation(mlocManager.getBestProvider(new Criteria(), true)); (in the onCreate)
After this, my application register a listener in the onResume() (and removes it in the onPause()), something like:........................
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Dec 16, 2009
I am facing with problem related to the Location API.
I tried the following code:
CODE:...................
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May 21, 2009
I'm having no luck getting getLastKnownLocation to return a non-null value in the Android emulator running in Eclipse. The following call always returns null:
locationManager.getLastKnownLocation(bestProvider);
(bestprovider is "gps")
In the intent's onCreate method I spawn a thread that calls requestFirstUpdate(). The onLocationChanged method fires so I presume the location was updated (I use the location section of the DDMS to push out a location first)..................
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Oct 17, 2009
I can't display my map on android emulator. i have, locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); location = locationManager.getLastKnownLocation("gps"); After those lines,the Log shows null for location instead of the object location
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Oct 22, 2009
So I'm trying to sample the gps coordinates just once in an application. I don't want to create a LocationListener object to constantly get gps updates. I want to wait until receiving the coordinates, and then proceed on to another task.
Here is a code snippet
CODE:.................
The loc variable is always null in the emulator. I tried using the command "geo fix latitude longitude" to set it, and also I tried using the DDMS way of setting it. Neither method had any effect on the code. Also the snippet isn't causing any exceptions.
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Jan 13, 2010
I'm using
CODE:......
To retrieve the current location at the start-up of my application.
As the Android documentation states, this location can be "out-of-date", since the method returns the location when the GPS was used the last time.
How can I actively request the current location from the GPS? I thought about using LocationListener, however that might be a bit of an overkill, since I only need the location once (at the start of my app).
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Sep 10, 2010
Do the Android users have the chance to reset the NetworkProvider, so that the location will be null?
I came up with the idea, that its only possible to have that location null, after starting the device the very first time. But also than google will check the location right away for my opinion.
Sure, I'm implementing a default location for this rare case. I just want to know how seldom this case is.
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Feb 1, 2010
I used to be able to use the GPS inside DDMS, now it doesn't work... Using English/Eclipse/Vista. Everything updated in eclipse->help-
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Dec 17, 2009
Is there a way I can see my phone's raw GPS coordinates, i.e. decimal lat/long? Is it built-in, or is there "an app for that" ? I have an Eris Droid.
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Jul 17, 2010
Can GPS on a phone, such as iPhone or Android determine your Z coordinates? I know it certainly has to be able to determine X and Y, well longitude, latitude that is, but what about the Z coordinates? Can it determine your height, and can I obtain height relative to ground?
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Jul 8, 2010
I want to know if there is a way to be able to get the touch coordinates in an app. I know of the commands getRawX(),getRawY(),getX(),getY(). But they dont give me the exact coordinates. Shouldnt these coordinates be in the screen resolution range of the phone? or do they have a different range?
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Apr 10, 2010
I have several tour guide books that list GPS coordinates for various sightseeing features.
Is there any way to enter these into Google Maps or Navigation as a destination? Is there an app that lets you do that?
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Sep 1, 2010
How would I go about collecting the latest Live NFL/Soccer scores? Are there open API's available for this?
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May 22, 2010
I am trying to retrieve the 2nd value from a Arraylist/ArrayAdapter that I have populated. I am new to Array so please correct me if I am wrong
Q1. I created the Array Favorite. What I think what I created is an Array with two set of value call Detail | Value. example Detail="Yasmin",Value="8". Is this correct?
Q2. I have assign the Favorite Array to the mFavlist listview. During the OnItemClick I can return the label "Yasmin" by the position of the listview. What I would like to do is return the value of "8". What would be the best way to do this?
import java.util.ArrayList;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;...................
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Jul 10, 2009
I created the following method for retrieving stored settings from the database:
public String getEntry(long rowIndex){
String value = "";
Cursor c = db.query(DATABASE_TABLE, new String[] {KEY_NAME, VALUE}, KEY_NAME + "=" + rowIndex, null, null, null, null);
int columnIndex = c.getColumnIndex(VALUE);
int rowsCount = c.getCount();
if(rowsCount > 0){
String value = c.getString(columnIndex);
}
return value;
}
On debugging I can see cursor c contains two columns and one row but when it comes to line
String value = c.getString(columnIndex);
it throws the CursorIndexOutOfBoundsException although columnIndex = 1 which should point to a valid entry. Does anyone know what could be wrong here?
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Mar 23, 2010
I have a settings menu that pops up and in it is a listpreference type menu. It is associated with a settings.xml file where there are 'array-strings' within it. It all works good but I don't know how to retrieve the users preference. As an example, let's say the user picks a color (red, green, or blue). The list that I've made within my 'array-strings' contain the text red, green, and blue. Within my code, I would like to do something if the user has choosen red, something else if they choose blue, etc., etc. Would I use a 'case' statement or an 'if' statement? And most importantly, how would I retrieve the users preference - the key? (am I checking for a boolean?)
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Jul 30, 2010
I am trying to retrieve a XML document from web service. I am passing a soap object with a token implementing the OAuth concept and retrieving the data. But the data does not turn out to be in XML format. It contains a curly braces in the place of start tag and semicolons when it ends. Is there any way to retrieve the document in XML format as such?
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Dec 10, 2009
Since the absolutelayout is deprecated, how to put a widget (suck as a button) on arbitary (X,Y)
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Oct 20, 2010
I'm making a android aplication, and I need creates buttons in the java files because the amount of buttons is variable and the coordinate of each button too. So, I don't know how set the coordinates x,y in java. Do you know what method i can use to set this values?
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Jan 11, 2010
I want to create an application that loads an image as a map (a building of a floor) and add coordinates to it. Can anyone has an idea how to do it? I can do it maybe with MapView and change the resource of the map to my image but it is still not working.
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Jun 8, 2010
I'm currently developing an app which uses tabs and google map. What I want to do is to get the gps positions, say 3, and store them in sql db (which I'm already doing) and then display them on the map. I already created canvas, added to overlay but those points disappear when I'm changing tabs so I thought if there is a way to somehow store those coords with google map so I can retrieve them and display them nicely whenever I'm clicking the "map tab"? Please can anyone help?
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