Develop Reference

Android : Google Maps API V2 displays black screen ECLIPSE

I am trying to show my current location on google maps but it displays black screen in the map fragment.
my manifest file
<?xml version="1.1" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.edraky.tasksheet"
android:versionCode="13"
android:versionName="6.7" >
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="26" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="com.edraky.tasksheet.MAPS_RECEIVE" />
<permission
android:name="com.edraky.tasksheet.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="com.edraky.tasksheet.permission.MAPS_RECEIVE" />
<application
android:allowBackup="true"
android:icon="#drawable/transparentlogo"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".SplashScreenActivity"
android:label="#string/app_name" >
</activity>
<activity
android:name=".LoginActivity"
android:label="#string/title_activity_login" >
</activity>
<activity
android:name=".ContactUs_Activity"
android:label="#string/title_activity_contact_us" >
</activity>
<activity
android:name=".AboutUs_Activity"
android:label="#string/title_activity_about_us_"
android:noHistory="false" >
</activity>
<activity
android:name=".WelcomePage"
android:label="#string/title_activity_welcome_page" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AIzaSyDpP-HMGNQCnFPnzODgTiJFXs00yirfhHE" />
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
</application>
</manifest>
ContactUs Layout ( layout displaying the map )
Contact us layout
<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="com.edraky.tasksheet.ContactUsActivity">
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_marginTop="40dp"
android:layout_height="260dp"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:textStyle="bold|italic"
android:textSize="11dp"
android:textIsSelectable="true" />
<fragment
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/textView1"
android:layout_alignParentBottom="true"
android:layout_below="#+id/textView1"
android:layout_marginTop="24dp"
class="com.google.android.gms.maps.SupportMapFragment"
android:scrollbars="vertical" />
<Button
android:id="#+id/homebutton"
android:layout_width="100dp"
android:layout_height="40dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:background="#drawable/contactusicon" />
</RelativeLayout>
contact us activity class
public class ContactUs_Activity extends FragmentActivity {
GoogleMap mMap;
GPSTracker gps;
Double currLat;
Double currLong;
GMapV2Direction gmap;
Button homebutton;
TextView view1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_contact_us);
homebutton = (Button) findViewById(R.id.homebutton);
view1 = (TextView) findViewById(R.id.textView1);
view1.setText("Text Shown");
homebutton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
onBackPressed();
}
});
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
mMap = mapFragment.getMap();
gps = new GPSTracker(this);
currLat = gps.getLatitude();
currLong = gps.getLongitude();
LatLng sydney = new LatLng(currLat, currLong);
mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney"));
mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));
}
}
i included all the libraries and generated the API key
output is shown below
no error message is logged. what could possibly go wrong in displaying the map ?
Note : same code is working on another application with different API key ofcourse and map is displayed correctly.
IMPORTANT NOTE:The app was already published on google play store before adding the Maps SDK API,so is there any modifications that I should do considering that or its irrelative?

Go to console.google.com
And generate a new API key with package name(com.package.app) same as in your mobile app and SHA1.
Get the new API key, replace in the code. Uninstall the app and re-run.

Okey , so i am not using FragmentActivity, and this may not directly tell the solution.
But this code definitely works and shows map using android.support.v4.app.Fragment.
import android.support.v4.app.Fragment;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapView;
import com.google.android.gms.maps.MapsInitializer;
import com.google.android.gms.maps.OnMapReadyCallback;
public class OrderMapFrag extends Fragment implements OnMapReadyCallback{
private GoogleMap mGoogleMap;
private MapView mMapView;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_order_map, container, false);
........
........
mMapView.onCreate(savedInstanceState);
mMapView.onResume();
try {
MapsInitializer.initialize(getActivity().getApplicationContext());
} catch (Exception e) {
e.printStackTrace();
}
mMapView.getMapAsync(this);
return view;
}
#Override
public void onMapReady(GoogleMap googleMap) {
mGoogleMap = googleMap;
//setting initial elements in map if required after this , as map got initialized properly
}
}
But I am not using exact same elements and permissions you use in Manifest. For me these are the used ones.
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="MY API KEY"/>

trying to get current location on my google-map

I'm trying to get my current location on google map but it's giving me a blank map.
this is my fragment
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback, LocationSource.OnLocationChangedListener, GoogleMap.OnMapClickListener {
private GoogleMap mMap;
private LatLng userLocation;
private GoogleApiClient mGoogleApiClient;
private Location mLastLocation;
public LocationManager mLocationManager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
mMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
}
#Override
public void onLocationChanged(Location location) {
userLocation = new LatLng(location.getAltitude(), location.getLongitude());
Toast.makeText(this, "found you...", Toast.LENGTH_SHORT).show();
MarkerOptions markerOptions= new MarkerOptions();
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(userLocation, 10));
mMap.addMarker(new MarkerOptions().position(userLocation).title("you are here"));
}
#Override
public void onMapClick(LatLng latLng) {
}
}
then that's my manifest
<?xml version="1.0" encoding="utf-8"?>
<uses-sdk
android:minSdkVersion="16"
android:targetSdkVersion="25" />
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="AIzaSyBuSE2O0siczDYt3oh3FVUgcO_MZs4-8FQ" />
<!-- To access Google+ APIs: -->
<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="com.example.liadiluz.finalproject.permission.MAPS_RECEIVE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:name="android.support.multidex.MultiDexApplication"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".Activities.MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service
android:name=".services.MyIntentService"
android:exported="false" />
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="#string/google_maps_key" />
<activity
android:name=".Activities.MapsActivity"
android:label="#string/title_activity_maps2"></activity>
</application>
and that's the layout file
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:map="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<fragment
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.liadiluz.finalproject.Activities.MapsActivity" />
</RelativeLayout>

MapFragment returns null after fixing manifest and code

My activity_locateus file has
<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
Manifest file
<uses-sdk
android:minSdkVersion="12"
android:targetSdkVersion="21" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.CALL_PHONE" />
<uses-permission android:name="android.permission.SEND_SMS" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<permission
android:name="mypackage.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="mypackage.permission.MAPS_RECEIVE" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<application>
<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.API_KEY"
android:value="myapikey" />
</application>
Activity Code
public class LocateUs extends FragmentActivity {
private Double latitude, longitude;
private String storeName, contactNumber;
private LatLng location;
private GoogleMap map;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_locateus);
MapsInitializer.initialize(getApplicationContext());
latitude = (Double) getIntent().getDoubleExtra("latitude",
God.INVALID_GPS);
longitude = (Double) getIntent().getDoubleExtra("longitude",
God.INVALID_GPS);
location = new LatLng(latitude, longitude);
storeName = (String) getIntent().getStringExtra("storeName");
contactNumber = (String) getIntent().getStringExtra("contactNumber");
map = ((SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map)).getMap();
if (map != null) {
map.addMarker(new MarkerOptions()
.position(location)
.title(storeName)
.snippet(contactNumber)
.icon(BitmapDescriptorFactory
.fromResource(R.drawable.app_logo)));
map.moveCamera(CameraUpd"ateFactory.newLatLngZoom(location, 15));
map.animateCamera(CameraUpdateFactory.zoomTo(10), 2000, null);
} else
Log.e(God.LOG_TAG, "Map is null");
}
}

Not sure what isnt working for my google maps api example

I am trying to run an example of google maps api on my tablet and it closes upon clicking. my device is running Android Version 4.1.2, Im not sure if this has anything to do with the problem
my manifest is :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.googlemapsdemo"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true"/>
<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" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<permission
android:name="com.example.googlemapsdemo.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="com.example.googlemapsdemo.permission.MAPS_RECEIVE" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<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>
<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.API_KEY"
android:value="AIzaSyB0SiURk853k3By..." />
</application>
My layout file is:
<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"
tools:context=".MainActivity" >
<fragment
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment" /></RelativeLayout>
and my activity:
public class MainActivity extends ActionBarActivity {
static final LatLng HAMBURG = new LatLng(53.558, 9.927);
static final LatLng KIEL = new LatLng(53.551, 9.993);
private GoogleMap map;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
map =((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
Marker hamburg = map.addMarker(new MarkerOptions().position(HAMBURG)
.title("Hamburg"));
Marker kiel = map.addMarker(new MarkerOptions()
.position(KIEL)
.title("Kiel")
.snippet("Kiel is cool")
.icon(BitmapDescriptorFactory
.fromResource(R.drawable.ic_launcher)));
// Move the camera instantly to hamburg with a zoom of 15.
map.moveCamera(CameraUpdateFactory.newLatLngZoom(HAMBURG, 15));
// Zoom in, animating the camera.
map.animateCamera(CameraUpdateFactory.zoomTo(10), 2000, null);
}
#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;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}

Error inflating class fragment while trying to use Google Maps

I'm trying to run simple demo app of Google Maps. I've referred standard article.
But I'm getting Error inflating class fragment exception.
I've updated mt manifest properly. Registered for Map API key. Install google-play-services and linked it to my current project. Extended my activity from FragmentActivity, still it doesn't work.
Am I doing anything wrong?
I also referred Error inflating class fragment but to no avail.
Any help appreciated.
My code is as follows:
activity_main.xml
<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"
tools:context=".MainActivity" >
<fragment
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment" />
</RelativeLayout>
MainActivity.java
package com.android.googlemapsdemo;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.widget.Toast;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
public class MainActivity extends FragmentActivity {
static final LatLng HAMBURG = new LatLng(53.558, 9.927);
static final LatLng KIEL = new LatLng(53.551, 9.993);
private GoogleMap map;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map))
.getMap();
if (map != null) {
Marker hamburg = map.addMarker(new MarkerOptions()
.position(HAMBURG).title("Hamburg"));
Marker kiel = map.addMarker(new MarkerOptions()
.position(KIEL)
.title("Kiel")
.snippet("Kiel is cool")
.icon(BitmapDescriptorFactory
.fromResource(R.drawable.ic_launcher)));
// Move the camera instantly to hamburg with a zoom of 15.
map.moveCamera(CameraUpdateFactory.newLatLngZoom(HAMBURG, 15));
// Zoom in, animating the camera.
map.animateCamera(CameraUpdateFactory.zoomTo(10), 2000, null);
} else {
map = ((MapFragment) getFragmentManager()
.findFragmentById(R.id.map)).getMap();
if (map == null) {
Toast.makeText(MainActivity.this, "Unable to generate map",
Toast.LENGTH_SHORT).show();
}
}
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.android.googlemapsdemo"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="19" />
<permission
android:name="com.android.googlemapsdemo.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<uses-permission android:name="com.android.googlemapsdemo.permission.MAPS_RECEIVE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.android.googlemapsdemo.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>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AIzaSyAT9_V5YI-7CMf_Yta0Y_zeDfPZeH5XFL0" />
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
</application>
</manifest>

Change this
<uses-sdk
android:minSdkVersion="11"
to
<uses-sdk
android:minSdkVersion="12"
If you have 11 you will be using SupportMapFragment. Consider this
https://developer.android.com/about/dashboards/index.html?utm_source=ausdroid.net
Looking at the link it is better to change to 12
Change this
public class MainActivity extends FragmentActivity
to
public class MainActivity extends Activity
Also getMap() can return null. Better check the availability of google map services.
You are also missing
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
in manifest file
https://developers.google.com/maps/documentation/android/start#getting_the_google_maps_android_api_v2
You can also remove
<permission
android:name="com.android.googlemapsdemo.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
and this
<uses-permission android:name="com.android.googlemapsdemo.permission.MAPS_RECEIVE" />

I think you should change this
class="com.google.android.gms.maps.MapFragment"
to
class="com.google.android.gms.maps.SupportMapFragment"
Because your minsdk="11"
also change this
map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map))
.getMap();
to
map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map))
.getMap();