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Strange behavior related to FusedLocationApi.requestLocationUpdates()

I'm writing a Android app and there's a strange behavior related to FusedLocationApi.requestLocationUpdates() that I've searched on SO and none of the other related questions solved my problem.
Apparently the requestLocationUpdates do not trigger the onLocationChanged() method all the times; I'm saying this because I'm cleaning my app's data on emulator for each run and sometimes the onLocationChanged() is triggered, sometimes not (most of under some conditions like run the app for the second time w/o cleaning the app's data or after making a user data's wipe i.e)
Below you can find my code (links from pastebin, I don't want to create any visual overload here)
Main Activity: http://pastebin.com/XiRrcR11
MapHandler: http://pastebin.com/HELnhaxy
Another problem is, oddly enough, if I use a anonymous inner class in the MapHandler in the method displayLocation(), the app works, but if I use a external class who extends LocationListener the app do not behave correctly
I know the expected question levels in SO are high but I'm starting my studies about Android development and this issue is taking my sleep away
Btw here is my AndroidManifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.trackit.app.track_it_v002">
<!--
The ACCESS_COARSE/FINE_LOCATION permissions are not required to use
Google Maps Android API v2, but you must specify either coarse or fine
location permissions for the 'MyLocation' functionality.
-->
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true"/>
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<!--
The API key for Google Maps-based APIs is defined as a string resource.
(See the file "res/values/google_maps_api.xml").
Note that the API key is linked to the encryption key used to sign the APK.
You need a different API key for each encryption key, including the release key that is used to
sign the APK for publishing.
You can define the keys for the debug and release targets in src/debug/ and src/release/.
-->
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="#string/google_maps_key" />
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
<activity
android:name=".MapsActivity"
android:label="#string/title_activity_maps">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Can you guys give me a hand here?
EDIT: after some debugging I've seen the requestLocationUpdates is not returning a non null object and not triggering onLocationChanged(), anyone have a idea why? =S

I encountered this issue. The mGoogleApiClient object, which needs to be connected at the time of requestLocationUpdates. This was resolved by requestingLocationUpdates from onConnected callback.
/*
* Called first time google client is connected
*/
#Override
public void onConnected(#Nullable Bundle bundle) {
Log.v(LOG_TAG,"DetectDrivingService - onConnected");
// Create
try {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
catch(SecurityException se){
}
}

Why i only got a Blank map with Google Maps Android API V2?

i'm trying to build a app with a Google Maps Api V2, but i only got a blank screen with zoom buttons everytime. I think everything is fine in my code. I have all the permissions necessary, i correctly got the Key. I already delete debug.keystore to eclipse generate another one, but i still got the same blank screen with zoom buttons. Can anyone see if i doing something wrong in my codes ?
My Manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.meu"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="18" />
<permission
android:name="com.example.meu.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="com.example.meu.permission.MAPS_RECEIVE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<!-- Required to show current location -->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<!-- Required OpenGL ES 2.0. for Maps V2 -->
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="****My key here***" />
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
<activity
android:name=".MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
My layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<fragment
android:id="#+id/map"
android:name="com.google.android.gms.maps.MapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</RelativeLayout>
My Java code:
package com.example.meu;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import android.app.Activity;
import android.app.AlertDialog;
import android.os.Bundle;
import android.widget.Toast;
public class MainActivity extends Activity {
// Google Map
private GoogleMap googleMap;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
try {
// Loading map
setContentView(R.layout.activity_main);
initilizeMap();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* function to load map. If map is not created it will create it for you
* */
private void initilizeMap() {
if (googleMap == null) {
googleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
// check if map is created successfully or not
if (googleMap == null) {
Toast.makeText(getApplicationContext(),"Sorry! unable to create maps", Toast.LENGTH_SHORT).show();
}
}
}
#Override
protected void onResume() {
super.onResume();
initilizeMap();
}
I already read a lot of things here, but no one could help me.

Firstly: As your map is a fragment (MAPS API V.2) you should extend your MainActivity as a FragmentActivity
public class MainActivity extends FragmentActivity {
instead of
public class MainActivity extends Activity {
Secondly: When casting the fragment as a map use the SupportMapFragment class (for better cmpatability between android versions) and getSupportFragmentManager() to find your map fragment.
((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();
instead of
((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
Also: as per the comments of the question "asker"(!?): If you find that your app is working in an Emulator but not on an actual device, ensure that you use your Debug.Keystore when building the App.
Note: Ensure at all times that you are using backwards compatible support libraries across your entire app (If you are targeting multiple versions of android of course but I can't understand why anyone would limit their app to only a couple of versions?) and also that all your keys, credentials, Auths etc.. are properly set up in the Google developers console. https://console.developers.google.com/

After do what Ryno Coetzee suggest me, the app work on emulator but not on device. But the app doesnt work on device because when i export to a apk file, i was using another keystore instead debug.keystore. After that, my app finally work on device and on emulator.
Thanks !

Simple map based app not working

I'm attempting to get a simple map based app running but when I install on device and try to "open" I receive the error "unfortunately application has stopped" On emulator I receive the message :
[2014-03-18 21:37:16 - FirstMap] Installation error: Unknown failure
[2014-03-18 21:37:16 - FirstMap] Please check logcat output for more details.
[2014-03-18 21:37:16 - FirstMap] Launch canceled!
Why do I receive this message ? I think my code looks good as I have followed these steps : https://developers.google.com/maps/documentation/android/v1/hello-mapview ?
Here is my code :
MainActivity.java :
package com.example.firstmap;
import android.os.Bundle;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;
public class MainActivity extends MapActivity {
#Override
protected boolean isRouteDisplayed() {
return false;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
MapView mapView = (MapView) findViewById(R.id.mapview);
mapView.setBuiltInZoomControls(true);
}
}
main.xml :
<?xml version="1.0" encoding="utf-8"?>
<com.google.android.maps.MapView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/mapview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:clickable="true"
android:apiKey="mykey"
/>
AndroidManifect.xml :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.firstmap"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.firstmap.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

Refer to my post here:
Want to use GoogleMaps - OnMyLocationChangeListener but can't implement it? Any other options
I have described what exactly to use and how.
Hope you find it helpful .. :)

There are many things missing from your manifest file. Try following the official instructions on how to use google maps google map instructions
The instructions you followed refer to version 1 google maps for android which is deprecated.

Use Google Map Api V2, The important changes that you will have to make is
1) Make use of
<fragment
android:id="#+id/map"
android:name="android.app.DialogFragment"
android:layout_width="match_parent"
android:layout_height="match_parent" />
i.e You have to use fragment tag in activity_main.xml instead of the mapview tag.
2) Refer Google play services.....
example: Google Maps Can't add reference to Play Services
Best Link to refer for newbies implementing Google Maps Api V2: http://www.androidhive.info/2013/08/android-working-with-google-maps-v2/

Failed to install Map.apk on device 'emulator-5554'

I'm new to the Android world, and I need to create an app using Google Maps Android API. I follow the instructions in:
https://developers.google.com/maps/documentation/android/start
and whenever I start the AVD I get an error:
[2013-12-05 21:04:37 - Map] Failed to install Map.apk on device 'emulator-5554!
[2013-12-05 21:04:37 - Map] (null)
[2013-12-05 21:04:38 - Map] Launch canceled!
My MainActivity code:
package com.example.map;
import android.app.Activity;
import android.os.Bundle;
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
my MainActivity XML file:
<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:name="com.google.android.gms.maps.MapFragment"/>
and my Manifest.xml file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.map"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<!-- The following two permissions are not required to use
Google Maps Android API v2, but are recommended. -->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-feature
android:glEsVersion="0x00020000"
android:required="true"/>
<uses-sdk
android:minSdkVersion="17"
android:targetSdkVersion="19" />
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
<meta-data
android:name="com.google.android.maps.v2.xxxxxxxxxHIDDENxxxxxxxx"
android:value="xxxxxxxxxHIDDENxxxxxxxx"/>
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.map.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Also tried the code that it's provided here:
https://developers.google.com/maps/documentation/android/
being the MainActivity file code:
package com.example.map;
import com.google.android.gms.maps.*;
import com.google.android.gms.maps.model.*;
import android.app.Activity;
import android.os.Bundle;
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.map_activity);
// Get a handle to the Map Fragment
GoogleMap map = ((MapFragment) getFragmentManager()
.findFragmentById(R.id.map)).getMap();
LatLng sydney = new LatLng(-33.867, 151.206);
map.setMyLocationEnabled(true);
map.moveCamera(CameraUpdateFactory.newLatLngZoom(sydney, 13));
map.addMarker(new MarkerOptions()
.title("Sydney")
.snippet("The most populous city in Australia.")
.position(sydney));
}
}
Any Ideas?

The first thing I would recommend is to not show your API key to the public; this are supposed to be private to whomever is developing the application.
Also the format of this meta tag is wrong:
<meta-data
android:name="com.google.android.maps.v2.AIzaSyB7AMKbYsVajgb6D0zpq9wUODX9gdR2DhE"
android:value="AIzaSyB7AMKbYsVajgb6D0zpq9wUODX9gdR2DhE"/>
You are copying your API key at the end of the name. I strongly suggest you create a new API key and do not use this one that you have exposed to the public. There might be other errors, but without the stack trace is hard to say.

See this page: http://developer.android.com/google/play-services/setup.html
Specifically:
To test your app when using the Google Play services SDK, you must use
either:
A compatible Android device that runs Android 2.3 or higher and includes Google Play Store.
The Android emulator with an AVD that runs the Google APIs platform based on Android 4.2.2 or higher.
So make sure the emulator you're using is Android 4.2.2 or greater. If it is below this level, Google Play Services is not available on the emulator, and you must use a physical android device to test it out.
If you have to test on a lower-end device emulator, there are workarounds to this but they aren't officially supported by Google so your mileage may vary.
See this link:
Custom emulator that supports Google Maps API

Google Map in Android 2.3.4 shows gray box on both AVD and real device

I'm trying to show a simple google map on my real Samsung device where Android version is 2.3.4.
got my SHA1 key
got my API key from google
Here is my manifest file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.neighbourhoodlocator"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<!-- External storage for caching. -->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<!-- My Location -->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<!-- Maps API needs OpenGL ES 2.0. -->
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AIzaSyBq8ATEI-DmBtso1T13S_DGfiT7cBgEav8" />
<activity
android:name="com.neighbourhoodlocator.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Here is my main.xml file:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/hello_world" />
<fragment
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.SupportMapFragment"/>
</RelativeLayout>
Here is my Mainactivity.java file:
public class MainActivity extends FragmentActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
Now the issue I'm having when I launch it on the real device, it doesn't crash, nor it throws any exception (No "Invalid Authorization" either); only thing I can see on the screen is a blank (gray box) with "+" and "-" button. I've tried Activity instead of FragmentActivity, application crashed.
I checked the logcat trace:
10-12 23:14:34.989: W/dalvikvm(15055): VFY: unable to resolve instance field 28
10-12 23:14:35.119: W/dalvikvm(15055): Unable to resolve superclass of Lmaps/p/w; (743)
10-12 23:14:35.119: W/dalvikvm(15055): Link of class 'Lmaps/p/w;' failed
10-12 23:14:35.119: W/dalvikvm(15055): Unable to resolve superclass of Lmaps/ap/as; (6267)
10-12 23:14:35.119: W/dalvikvm(15055): Link of class 'Lmaps/ap/as;' failed
10-12 23:14:35.139: W/dalvikvm(15055): Unable to resolve superclass of Lmaps/af/k; (5294)
10-12 23:14:35.139: W/dalvikvm(15055): Link of class 'Lmaps/af/k;' failed
10-12 23:14:35.139: E/dalvikvm(15055): Could not find class 'maps.af.k', referenced from method maps.ag.an.a
10-12 23:14:35.139: W/dalvikvm(15055): VFY: unable to resolve new-instance 5139 (Lmaps/af/k;) in Lmaps/ag/an;
I added the google-play-services_lib appropriately. and also added the android-support-v4.jar is also in "Android private libraries".
Notice that the project build target is: Google APIs 4.2.2
and the android version in my Samsung phone is: 2.3.4
I've been trying last couple of days, I also tried in the emulator, same thing is happening.
Please help me to solve the issue.
Thanks.

I had a similar problem.. I have solved it. Android emulators aren't working. You should work your app on your phone. When exporting your project, your sha1 is changing. You must copy that sha1 and make a new API-KEY in google api console. (don't forget the change manifest file). After uploading your phone, it works..