Develop Reference

how do i solve integrating google map in fragment in android

I have a problem integrating google map in fragment in android. I know how to do it in activity but fragment reference on this site are very old and not working in 2018. I don't have any error.below is fragment file. Any help will be highly appreciated. I have added API key and proper manifest file.
package com.example.narmail.truck30mint.Api.Fragments;
import android.Manifest;
import android.content.Context;
import android.content.DialogInterface;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.Fragment;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AlertDialog;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import com.example.narmail.truck30mint.R;
import com.google.android.gms.maps.CameraUpdateFactory;
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;
import com.google.android.gms.maps.model.CameraPosition;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import java.util.ArrayList;
public class ViewTrucksFragment extends Fragment {
TextView pageTitle;
MapView mMapView;
private GoogleMap googleMap;
public ViewTrucksFragment() {
// Required empty public constructor
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View rootView = inflater.inflate(R.layout.fragment_view_trucks, container, false);
pageTitle = rootView.findViewById(R.id.view_trucks_title);
String load_id = getArguments().getString("load_id");
String load_from = getArguments().getString("load_from");
String load_to = getArguments().getString("load_to");
if (load_id != null && load_from != null && load_to != null) {
pageTitle.setText("Matching Trucks for "+load_from+" to "+load_to);
}
mMapView= rootView.findViewById(R.id.view_trucks_map);
mMapView.onCreate(savedInstanceState);
mMapView.onResume();
try {
MapsInitializer.initialize(getActivity().getApplicationContext());
} catch (Exception e) {
e.printStackTrace();
}
mMapView.getMapAsync(new OnMapReadyCallback() {
#Override
public void onMapReady(GoogleMap mMap) {
googleMap = mMap;
googleMap.getUiSettings().setCompassEnabled(true);
googleMap.getUiSettings().setMyLocationButtonEnabled(true);
googleMap.getUiSettings().setRotateGesturesEnabled(true);
// For dropping a marker at a point on the Map
LatLng sydney = new LatLng(30.374219,76.782055);
googleMap.addMarker(new MarkerOptions().position(sydney).
title("Title").snippet("TitleName"));
// For zooming automatically to the location of the marker
CameraPosition cameraPosition = new CameraPosition.Builder().target(sydney).zoom(12).build();
googleMap.animateCamera(CameraUpdateFactory.newCameraPosition
(cameraPosition ));
}
});
/*----------------*/
return rootView;
}
}
and below is my layout file
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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:background="#color/colorWhite"
tools:context=".Api.Fragments.ViewTrucksFragment">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/view_trucks_title"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:textAlignment="center"
android:layout_marginRight="10dp"
android:layout_marginLeft="10dp"
android:padding="10dp"
android:textColor="#color/colorPrimary"
android:textSize="15sp"
android:text="#string/hello_blank_fragment" />
<com.google.android.gms.maps.MapView
android:id="#+id/view_trucks_map"
android:layout_width="match_parent"
android:layout_height="match_parent">
</com.google.android.gms.maps.MapView>
</LinearLayout>
</FrameLayout>

Please follow below step to finish your task. Just need to create 3 files
(1) Create XML layout for map inside your fragment layout fragment_map.xml
<?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="match_parent" />
(2) Create Fragment to load MAP MapFragment.Java
public class MapFragment extends Fragment implements OnMapReadyCallback {
private GoogleMap mMap;
public MapFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_map, container, false);
}
#Override
public void onActivityCreated(#Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
if(getActivity()!=null) {
SupportMapFragment mapFragment = (SupportMapFragment) getActivity().getSupportFragmentManager()
.findFragmentById(R.id.map);
if (mapFragment != null) {
mapFragment.getMapAsync(this);
}
}
}
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
//Do your stuff here
}
}
(3) Create Activity to load MAP fragment MapsActivity.java
public class MapsActivity extends FragmentActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.add(R.id.content,new MapFragment());
fragmentTransaction.commit();
}
}
For MAP key you need to follow same step you have done in your project. Hope this step will help you.
Inside Gradle please use below gradle
implementation 'com.google.android.gms:play-services-maps:15.0.1'
AndroidManifest.xml define below things.
<uses-permission android:name="android.permission.INTERNET"/>
Inside Application Tag.
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="YOUR MAP KEY" />

MapView in scroll tab display nothing

please help.
I am trying to display a google map in a scroll tab, but I am getting a blank google map.
Since I am using the scroll tab, I use android.support.v4.app.Fragment in the PagerAdapter class and the fragment class which should display the map.
The following is fragment class to display a google map
package ui;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.bdushimi.bjhangout.R;
import com.google.android.gms.location.FusedLocationProviderClient;
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;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
public class MapTab extends Fragment implements OnMapReadyCallback {
public static View view;
private GoogleMap mGoogleMap;
private MapView mapView;
private FusedLocationProviderClient mFusedLocationProviderClient;
private SupportMapFragment mapFragment;
public MapTab() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
view = inflater.inflate(R.layout.fragment_map, container, false);
return view;
}
#Override
public void onViewCreated(View v, #Nullable Bundle savedInstanceState) {
super.onViewCreated(v, savedInstanceState);
mapView = (MapView) this.view.findViewById(R.id.map);
if (mapView != null) {
mapView.onCreate(savedInstanceState);
mapView.onResume();
mapView.getMapAsync(this);
}
}
#Override
public void onMapReady(GoogleMap googleMap) {
MapsInitializer.initialize(this.getActivity());
mGoogleMap = googleMap;
googleMap.addMarker(new MarkerOptions().position(new LatLng(40.689247, -74.044502))
.title("You're here"));
}
}
The following is the 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="ui.MapTab">
<com.google.android.gms.maps.MapView
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent">
</com.google.android.gms.maps.MapView>
</RelativeLayout>
I would like to know where I am getting wrong or possibly another approach I should consider. Thanks

App Crashes While Trasitioning One Fragment To Another

I am trying to jump from one fragment to another fragment. But whenever i click the button to jump on second fragment my app crashes.
Here are my source files. Please help !
I want to Navigate Tab1 to AlertScreen.
Here is Tab1.java
package com.example.bavarian.sos;
import android.content.Context;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageButton;
public class Tab1 extends Fragment {
ImageButton HelpButton ;
private boolean playing = false;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.tab1, container, false);
HelpButton = (ImageButton) rootView.findViewById(R.id.imageButton);
final MediaPlayer Alarm = MediaPlayer.create(getContext(),R.raw.sound);
//private boolean playing = false ;
HelpButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Fragment fragment = new AlertScreen();
FragmentTransaction transaction = getFragmentManager().beginTransaction();
transaction.replace(R.id.fragment_container, fragment);
transaction.addToBackStack(null);
transaction.commit();
}
});
return rootView ;
}
}
AlertScreen.java
package com.example.bavarian.sos;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class AlertScreen extends Fragment {
public AlertScreen(){
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.alert_screen,container,false);
return rootView;
}
}
alert_screen.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Alerrt Screen"
android:id="#+id/alerttext"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="176dp" />
</RelativeLayout>
What i am missing here ???

Show Listview on googlemaps activity

I'm trying to show list view on the bottom side of the google maps activity (only when the button is clicked), but it doesn't work, just showing app stop message. How can I show listview on google maps activity?
Here is my java and xml code
package com.example.dong_gyo.project;
import android.app.SearchManager;
import android.content.Context;
import android.content.Intent;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationManager;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import java.util.ArrayList;
public class MapFind extends ActionBarActivity {
GoogleMap mMap; // Might be null if Google Play services APK is not available.
LocationManager lm;
String locationProvider;
Location location;
Button mapListbut;
ListView mapList;
ArrayList list;
ButtonListener listener;
ArrayAdapter mapadapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.map_find);
setUpMapIfNeeded();
mapListbut = (Button)findViewById(R.id.showMapList);
mapadapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, list);
mapList = (ListView)findViewById(R.id.mapList);
mapList.setAdapter(mapadapter);
mapList.setVisibility(View.INVISIBLE);
mapListbut.setOnClickListener(listener);
}
#Override
protected void onResume() {
super.onResume();
setUpMapIfNeeded();
}
private void setUpMapIfNeeded() {
// Do a null check to confirm that we have not already instantiated the map.
if (mMap == null) {
// Try to obtain the map from the SupportMapFragment.
mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map))
.getMap();
lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
locationProvider = lm.getBestProvider(new Criteria(), true);
location = lm.getLastKnownLocation(locationProvider);
double latitude = location.getLatitude();
double longitude = location.getLongitude();
final LatLng LOC = new LatLng(latitude, longitude);
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(LOC, 16));
// Check if we were successful in obtaining the map.
if (mMap != null) {
setUpMap(LOC);
}
}
}
private void setUpMap(LatLng LOC) {
mMap.addMarker(new MarkerOptions().position(LOC));
}
class ButtonListener implements View.OnClickListener {
#Override
public void onClick(View v) { // 목록 토글 버튼 리스너
// TODO Auto-generated method stub
switch (v.getId()) { //
case R.id.showMapList:
if (!mapList.isShown()) {
mapList.setVisibility(View.VISIBLE);
mapadapter.notifyDataSetChanged();
mapListbut.setSelected(true);
} else {
mapList.setVisibility(View.INVISIBLE);
mapListbut.setSelected(false);
}
break;
}
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu items for use in the action bar
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main_activity_actions, menu);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle presses on the action bar items
switch (item.getItemId()) {
case R.id.action_search:
startActivity(new Intent(SearchManager.INTENT_ACTION_GLOBAL_SEARCH));
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
XML :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="1">
<fragment 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:id="#+id/map"
tools:context=".MapsActivity"
android:name="com.google.android.gms.maps.SupportMapFragment"/>
<Button
android:id="#+id/showMapList"
android:text = "목록보기"
android:layout_width="100dp"
android:layout_height="60dp"
android:layout_alignParentBottom="true"
android:layout_marginBottom="20dp"
android:layout_marginLeft="20dp"/>
<ListView
android:id="#+id/mapList"
android:layout_width="match_parent"
android:layout_height="200dp"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:background="#eeeeee" >
</ListView>
</RelativeLayout>

I ran your code and it said it gets a null pointer. Looking at your code, location = lm.getLastKnownLocation(locationProvider); makes location to be null. So, instead of the getBestProvider, try:
location = lm.getLastKnownLocation(LocationManager.PASSIVE_PROVIDER);
I tried it and the maps load.

Start Fragment from another -> might have started the wrong way my app?

I have started building an application but I think I'm might be doing something wrong in the main structure. My application is 3 fragments, communicating with each other. The first fragment is about settings, the second one is an exandable array list. The third is a Gmap.
Clicking on a specific setting in the first fragment (that is a location) would make the gmap opens at the good spot... Same thing for child item in the second fragment.
I also would like to have a thread that update the current location of all fragments.
The this is, I don't know how I should structure my app. Is it good to have 3 fragments, should I use 3 activities? And how the communication should be made within fragments? I read that fragments should not communicate directly together, but in my case I don't see how the child of an exandable array list can not directly open the fragment containing GMap...
Here is a picture, just to figure out what my app would look like:
http://s14.postimg.org/ywj7yu8qp/Untitled.png
Here's the code so far:
MainActivity:
package com.stylingandroid.basicactionbar;
import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentTransaction;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
public class MainActivity extends Activity
{
private class MyTabListener implements ActionBar.TabListener
{
private Fragment mFragment;
private final Activity mActivity;
private final String mFragName;
public MyTabListener( Activity activity, String fragName )
{
mActivity = activity;
mFragName = fragName;
}
#Override
public void onTabReselected( Tab tab, FragmentTransaction ft )
{
// TODO Auto-generated method stub
}
#Override
public void onTabSelected( Tab tab, FragmentTransaction ft )
{
mFragment = Fragment.instantiate( mActivity, mFragName );
ft.add( android.R.id.content, mFragment );
}
#Override
public void onTabUnselected( Tab tab, FragmentTransaction ft )
{
ft.remove( mFragment );
mFragment = null;
}
}
#Override
public void onCreate( Bundle savedInstanceState )
{
super.onCreate( savedInstanceState );
// Intent intent;
ActionBar ab = getActionBar();
ab.setNavigationMode( ActionBar.NAVIGATION_MODE_TABS );
Tab tab = ab.newTab()
.setText( R.string.title_param )
.setTabListener(
new MyTabListener( this,
Param.class.getName() ) );
ab.addTab( tab );
// intent = new Intent().setClass(this, Friends.class);
tab = ab.newTab()
.setText( R.string.title_friends )
.setTabListener(
new MyTabListener( this,
Friends.class.getName() ) );
ab.addTab( tab );
tab = ab.newTab()
.setText( R.string.title_maps )
.setTabListener(
new MyTabListener( this,
Maps.class.getName() ) );
ab.addTab( tab );
}
#Override
public boolean onCreateOptionsMenu( Menu menu )
{
getMenuInflater().inflate( R.menu.main, menu );
return true;
}
#Override
public boolean onOptionsItemSelected( MenuItem item )
{
boolean ret;
if (item.getItemId() == R.id.menu_settings)
{
// Handle Settings
ret = true;
} else
{
ret = super.onOptionsItemSelected( item );
}
return ret;
}
}
Tab1:
package com.stylingandroid.basicactionbar;
import java.io.IOException;
import java.util.List;
import java.util.Locale;
import android.app.Fragment;
import android.location.Address;
import android.location.Geocoder;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class Param extends Fragment
{
Button btnShowLocation;
private View V;
TextView text;
public static double latitude;
public static double longitude;
// GPSTracker class
GPSTracker gps;
#Override
public View onCreateView( LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState )
{
V = inflater.inflate( R.layout.param, container, false );
gps = new GPSTracker(getActivity());
if(gps.canGetLocation()){
text = (TextView) V.findViewById(R.id.widget35);
latitude = gps.getLatitude();
longitude = gps.getLongitude();
String cityName=null;
Geocoder gcd = new Geocoder(getActivity(), Locale.getDefault());
List<Address> addresses;
try {
addresses = gcd.getFromLocation(latitude, longitude, 1);
if (addresses.size() > 0)
System.out.println(addresses.get(0).getLocality());
cityName=addresses.get(0).getLocality();
} catch (IOException e) {
e.printStackTrace();
}
// create class object
// check if GPS enabled
text.setText(cityName);
}else{
// can't get location
// GPS or Network is not enabled
// Ask user to enable GPS/network in settings
gps.showSettingsAlert();
}
return V;
}
}
Tab2:
package com.stylingandroid.basicactionbar;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import android.app.Fragment;
import android.os.Bundle;
import android.support.v4.app.FragmentTransaction;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ExpandableListView;
import android.widget.ExpandableListView.OnChildClickListener;
import android.widget.Toast;
public class Friends extends Fragment implements OnChildClickListener
{
private static List<Country> Countries;
private ExpandableListView expandableListView;
private CountryAdapter adapter;
private View V;
#Override
public View onCreateView( LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState )
{
V = inflater.inflate( R.layout.frag2, container, false );
expandableListView = (ExpandableListView) V.findViewById(R.id.expandableListView);
expandableListView.setOnChildClickListener(this);
LoadCountries();
return V;
}
private void LoadCountries() {
Countries = new ArrayList<Country>();
ArrayList<String> citiesAustralia = new ArrayList<String>(
Arrays.asList("Brisbanea", "Hobart", "Melbourne", "Sydney"));
Countries.add(new Country("Australia", citiesAustralia));
ArrayList<String> citiesChina = new ArrayList<String>(
Arrays.asList("Beijing", "Chuzhou", "Dongguan", "Shangzhou"));
Countries.add(new Country("China", citiesChina));
adapter = new CountryAdapter(getActivity(), Countries);
expandableListView.setAdapter(adapter);
}
#Override
public boolean onChildClick(ExpandableListView arg0, View arg1, int arg2,
int arg3, long arg4) {
/* Fragment param = new Param();
android.app.FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.id.frag2, param);
ft.addToBackStack(null);
ft.commit();
*/
Toast.makeText(getActivity(), "Clicked on Detail " , Toast.LENGTH_LONG).show();
return true;
}
}
Tab3:
package com.stylingandroid.basicactionbar;
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;
import android.app.Fragment;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class Maps extends Fragment
{
static final LatLng HAMBURG = new LatLng(Param.latitude, Param.longitude);
static final LatLng KIEL = new LatLng(53.551, 9.993);
private GoogleMap map;
View V;
#Override
public View onCreateView( LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState )
{
V = inflater.inflate( R.layout.frag1, container, false );
map = ((MapFragment) getActivity().getFragmentManager().findFragmentById(R.id.map))
.getMap();
Marker hamburg = map.addMarker(new MarkerOptions().position(HAMBURG)
.title("Hamburg"));
// 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);
GoogleMap gMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
gMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
gMap.setMyLocationEnabled(true);
gMap.getUiSettings().setCompassEnabled(true);
Log.e("Maps", "------EOC-------");
return V;
}
}
param.xml (tab1):
<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout
android:id="#+id/widget0"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<ToggleButton
android:id="#+id/widget33"
android:layout_width="125dp"
android:layout_height="59dp"
android:textOn="I&apos;m free!"
android:textOff="I&apos;m free!"
android:layout_x="78dp"
android:layout_y="29dp" />
<TextView
android:id="#+id/widget34"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Lieu actuel"
android:layout_x="87dp"
android:layout_y="196dp" />
<TextView
android:id="#+id/widget35"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Indisponible"
android:layout_x="101dp"
android:layout_y="247dp" />
<TextView
android:id="#+id/widget36"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="GPS"
android:layout_x="89dp"
android:layout_y="108dp" />
<ToggleButton
android:id="#+id/widget37"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textOn="On"
android:textOff="Off"
android:layout_x="158dp"
android:layout_y="99dp" />
</AbsoluteLayout>
frag2.xml (tab2):
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ExpandableListView
android:id="#+id/expandableListView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>
</LinearLayout>
frag1.xml (tab3):
<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" >
<fragment
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment" />
</RelativeLayout>
Here are only the principal fragments, I can also provide the full code of all classes if needed...
Questions:
Is it okay of what I began to do about how fragments work? Should I instead use activities? Is it okay how I proceeded to create fragment? Do I respect programming standard?
How to communicate from fragments to another? I use global variables so when something is updated, gmap (tab3) is also updated, but I don't see how to open the gmap fragment on a click.
The gmap is making the app crashing when I click two times on the gmap tab...?
Thanks a lot guys.

You can use all the fragments you want :)
I think the best way i to make an abstract Class to save and handle all you data and events.
In an abstract Class declare the method Static so you can call them directly on the Class.