Develop Reference

Save-Bundle with Fragments Not Saving State on Android

I have an android app that has two fragments that pass data from fragmentA to fragmentB. I can load all the data correctly but when I change the screen orientation it all reloads. I have set up the onSaveInstanceState and onViewStateRestored methods in the fragment I want to keep the state in, but nothing stays when the screen orientation changes.
The main problem that needs to be fixed is when text is loaded into the TextView in FragmentB - it needs to stay there when the screen orientation is changed.
MainActivity.Java
package com.example.tourguide;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.FragmentTransaction;
public class MainActivity extends AppCompatActivity implements FragmentA.FragmentAListener, FragmentB.FragmentBListener {
private FragmentA fragmentA;
private FragmentB fragmentB;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
fragmentA = new FragmentA();
fragmentB = new FragmentB();
if(savedInstanceState == null) {
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
ft.replace(R.id.container_a, new FragmentA());
ft.replace(R.id.container_b, new FragmentB());
ft.commitNow();
}
}
#Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
}
#Override
protected void onRestoreInstanceState(#NonNull Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
}
#Override
public void onInputASent(CharSequence input) {
fragmentB.updateEditText(input);
}
#Override
public void onInputBSent(CharSequence input) {
fragmentA.updateEditText(input);
}
}
FragmentA.Java
package com.example.tourguide;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.ListFragment;
public class FragmentA extends ListFragment implements AdapterView.OnItemClickListener {
private FragmentAListener listener;
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String[] locationList = getActivity().getResources().getStringArray(R.array.location_list);
updateEditText(locationList[position]);
listener.onInputASent(locationList[position]);
}
public interface FragmentAListener {
void onInputASent(CharSequence input);
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_a, container, false);
return v;
}
#Override
public void onListItemClick(#NonNull ListView l, #NonNull View v, int position, long id) {
super.onListItemClick(l, v, position, id);
}
public void updateEditText(CharSequence newText) {
//editText.setText(newText);
}
#Override
public void onAttach(Context context) {
super.onAttach(context);
if (context instanceof FragmentAListener) {
listener = (FragmentAListener) context;
} else {
throw new RuntimeException(context.toString()
+ " must implement FragmentAListener");
}
}
#Override
public void onDetach() {
super.onDetach();
listener = null;
}
#Override
public void onActivityCreated(#Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
ArrayAdapter arrayAdapter = ArrayAdapter.createFromResource(getActivity(), R.array.location_list, android.R.layout.simple_list_item_1);
setListAdapter(arrayAdapter);
getListView().setOnItemClickListener(this);
}
}
FragmentB.Java - This is the fragment that needs to be keep the string inside the TextView when the screen is rotated
package com.example.tourguide;
import android.content.Context;
import android.content.res.Resources;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
public class FragmentB extends Fragment {
private FragmentBListener listener;
private TextView resultsFrag;
private static final String KEY_TITLE = "title_key";
private String stateObject;
public interface FragmentBListener {
void onInputBSent(CharSequence input);
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_b, container, false);
resultsFrag = v.findViewById(R.id.tvFragmentB);
//I used the same if block in three different locations and none of them worked
if (savedInstanceState != null) {
String itemTo = savedInstanceState.getString(KEY_TITLE);
resultsFrag.setText(itemTo);
} else {
Toast.makeText(getActivity(), "Error 1", Toast.LENGTH_SHORT).show();
}
return v;
}
public void updateEditText(CharSequence newText) {
String newOption = newText.toString();
stateObject = newText.toString();
Resources res = getResources();
String[] locationDesc = res.getStringArray(R.array.location_description);
if (newOption.equals("Calgary")) {
resultsFrag.setText(locationDesc[0]);
} else if (newOption.equals("Victoria")) {
resultsFrag.setText(locationDesc[1]);
} else if (newOption.equals("Vancouver")) {
resultsFrag.setText(locationDesc[2]);
} else if (newOption.equals("Toronto")) {
resultsFrag.setText(locationDesc[3]);
}
}
#Override
public void onAttach(Context context) {
super.onAttach(context);
if (context instanceof FragmentBListener) {
listener = (FragmentBListener) context;
} else {
throw new RuntimeException(context.toString()
+ " must implement FragmentBListener");
}
}
#Override
public void onDetach() {
super.onDetach();
listener = null;
}
#Override
public void onSaveInstanceState(#NonNull Bundle outState) {
super.onSaveInstanceState(outState);
outState.putString(KEY_TITLE, resultsFrag.getText().toString());
}
#Override
public void onViewStateRestored(#Nullable Bundle savedInstanceState) {
super.onViewStateRestored(savedInstanceState);
//I used the same if block in three different locations and none of them worked
if (savedInstanceState != null) {
String itemTo = savedInstanceState.getString(KEY_TITLE);
resultsFrag.setText(itemTo);
} else {
Toast.makeText(getActivity(), "Error 2", Toast.LENGTH_SHORT).show();
}
}
#Override
public void onActivityCreated(#Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
//I used the same if block in three different locations and none of them worked
if (savedInstanceState != null) {
String itemTo = savedInstanceState.getString(KEY_TITLE);
resultsFrag.setText(itemTo);
} else {
Toast.makeText(getActivity(), "Error 3", Toast.LENGTH_SHORT).show();
}
}
}
fragment_b.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/holo_blue_light"
android:gravity="center_horizontal"
android:orientation="vertical"
android:padding="16dp">
<TextView
android:id="#+id/tvFragmentB"
android:layout_width="match_parent"
android:layout_height="602dp" />
</LinearLayout>
Strings
<resources>
<string name="app_name">Tour Guide</string>
<string-array name="location_list">
<item>Calgary</item>
<item>Victoria</item>
<item>Vancouver</item>
<item>Toronto</item>
</string-array>
<!-- Descriptions for the locations -->
<string-array name="location_description">
<item>This is a big description for CALGARY - THIS needs to load in for more information regarding CALGARY</item>
<item>This is a big description for VICTORIA - THIS needs to load in for more information regarding VICTORIA</item>
<item>This is a big description for VANCOUVER - THIS needs to load in for more information regarding VANCOUVER</item>
<item>This is a big description for TORONTO - THIS needs to load in for more information regarding TORONTO</item>
</string-array>
</resources>
fragment_a.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/holo_green_light"
android:gravity="center_horizontal"
android:orientation="vertical"
android:padding="16dp">
<ListView
android:id="#android:id/list"
android:layout_width="wrap_content"
android:layout_height="206dp" />
</LinearLayout>
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<FrameLayout
android:id="#+id/container_a"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<FrameLayout
android:id="#+id/container_b"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>

They are saved, but you are replacing them. Use this
if(savedInstanceState == null) {
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
ft.replace(R.id.container_a, new FragmentA());
ft.replace(R.id.container_b, new FragmentB());
ft.commit();
}
Please note that fragment instantiation is pretty much the ONLY scenario in which this check yields correct and expected results.
Do not keep a reference to a Fragment, unless it is obtained via findFragmentByTag + instantiation. You might want to use commitNow to get reliable results in this case.
EDIT: Update with more complete code:
public class MainActivity extends AppCompatActivity implements FragmentA.FragmentAListener, FragmentB.FragmentBListener {
private FragmentA fragmentA;
private FragmentB fragmentB;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if(savedInstanceState == null) {
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
ft.replace(R.id.container_a, new FragmentA(), "fragmentA");
ft.replace(R.id.container_b, new FragmentB(), "fragmentB");
ft.commitNow();
}
fragmentA = getSupportFragmentManager().findFragmentByTag("fragmentA");
fragmentB = getSupportFragmentManager().findFragmentByTag("fragmentB");
}

Android: MapView not showing up empty

I want to show google maps in tabbed layoutSo I created a viewPager in main activity and added below fragment for map
But it is showing up empty.
Every overridden function is getting called as expected.
I am not able to understand what exactly is causing map to not show up.
Below is my code
fragment_map.xml
<?xml version="1.0" encoding="utf-8"?>
<com.google.android.gms.maps.MapView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:map="http://schemas.android.com/apk/res-auto"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:apiKey="#string/google_maps_key"
android:id="#+id/mapView" >
</com.google.android.gms.maps.MapView>
MapFragment.java
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
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.OnMapReadyCallback;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import com.i2e1.iconnect.R;
import java.util.ArrayList;
import java.util.List;
public class MapFragment extends Fragment implements OnMapReadyCallback {
MapView m;
GoogleMap googleMap;
private List<MarkerOptions> markers;
public MapFragment() {
// Required empty public constructor
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_map, container, false);
m = (MapView) v.findViewById(R.id.mapView);
m.getMapAsync(this);
m.onCreate(savedInstanceState);
return v;
}
#Override
public void onResume() {
super.onResume();
m.onResume();
}
#Override
public void onPause() {
super.onPause();
m.onPause();
}
#Override
public void onDestroy() {
super.onDestroy();
m.onDestroy();
}
#Override
public void onLowMemory() {
super.onLowMemory();
m.onLowMemory();
}
#Override
public void onMapReady(GoogleMap googleMap) {
this.googleMap = googleMap;
for (MarkerOptions m : markers) {
googleMap.addMarker(new MarkerOptions()
.position(m.getPosition())
.title(m.getTitle()));
}
googleMap.animateCamera(CameraUpdateFactory.newLatLngZoom(markers.get(0).getPosition(), 15), 5000, null);
m.onResume();
}
}

Sorry Guys
It was a simple problem. I just factory reset a device to test and it was never connected to WIFI/mobile data before launching app.
Problem got resolved just after connecting to wifi.

Here is my code. I tried it and it works well.
Try like this

Android android.R.id.list ListView Fragment Exception

I have an android application that keeps crashing when I add a ListFragment. I keep getting and error and have read other sites with the same error message. I haven't found anything that's worked for me yet though. The exception is:
Unable to start Activity Component {com.alarm/com.alarm.activity.AlarmListActivity} java.lang.RuntimeException: Content has view with android.R.id.list that is not a ListView class.
This is strange though because I don't have a ListView with an id of 'list'. Here is how my fragment was defined.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ListView
android:id="#+id/alarm_list"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
Here my fragment and activity classes.
Fragment:
package com.alarm.fragments;
import android.app.ListFragment;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.alarm.R;
public class AlarmListFragment extends ListFragment {
#Override
public void onActivityCreated(Bundle savedInstanceState) {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.frag_alarm_list, null);
return v;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public void onResume() {
super.onResume();
Log.e("onREUME", "resuming list activity");
}
}
Activity:
package com.alarm.activity;
import android.app.Activity;
import android.app.FragmentManager;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import com.alarm.R;
import com.alarm.fragments.AlarmListFragment;
public class AlarmListActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
FragmentManager fm = getFragmentManager();
if (fm.findFragmentById(android.R.id.content) == null) {
fm.beginTransaction().add(android.R.id.content, new AlarmListFragment()).commit();
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.alarm_list_menu, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_add_alarm:
Intent addAlarm = new Intent(this, AlarmCreateActivity.class);
startActivity(addAlarm);
return true;
case R.id.settings:
Intent settings = new Intent(this, SettingsActivity.class);
startActivity(settings);
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
Any help or explanation of why this might be happening would be greatly appreciated!

You must use android:id="#id/android:list" for your ListView

Launch a activity with button click using a FragmentActivity

Hey guys I need help I'm making a launcher that needs to have a button that when clicked it opens the AllApps.class activity witch shows a list of all installed apps
The other button needs to open a installed app that is on the device
and the last button needs to open the default web browser and open google.com
Here's my code!
Home.java:
package com.dva.schooltoolshome;
import java.util.Locale;
import android.app.ActionBar;
import android.app.FragmentTransaction;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageButton;
import android.widget.TextView;
public class Home extends FragmentActivity implements ActionBar.TabListener {
SectionsPagerAdapter mSectionsPagerAdapter;
ViewPager mViewPager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
final ActionBar actionBar = getActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
actionBar.setDisplayShowHomeEnabled(false);
actionBar.setDisplayOptions(actionBar.getDisplayOptions()
^ ActionBar.DISPLAY_SHOW_TITLE);
mSectionsPagerAdapter = new SectionsPagerAdapter(
getSupportFragmentManager());
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
mViewPager
.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
#Override
public void onPageSelected(int position) {
actionBar.setSelectedNavigationItem(position);
}
});
for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++) {
if (mSectionsPagerAdapter.getPageTitle(i).toString()
.equalsIgnoreCase("calc")) {
actionBar.addTab(actionBar.newTab()
.setIcon(R.drawable.calendar)
.setTabListener(this));
} else if (mSectionsPagerAdapter.getPageTitle(i).toString()
.equalsIgnoreCase("home")) {
actionBar.addTab(actionBar.newTab().setIcon(R.drawable.home)
.setTabListener(this));
} else if (mSectionsPagerAdapter.getPageTitle(i).toString()
.equalsIgnoreCase("drive")) {
actionBar.addTab(actionBar.newTab().setIcon(R.drawable.folder)
.setTabListener(this));
}
}
mViewPager.setCurrentItem(1);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.home, menu);
return true;
}
#Override
public void onTabSelected(ActionBar.Tab tab,
FragmentTransaction fragmentTransaction) {
mViewPager.setCurrentItem(tab.getPosition());
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_settings:
startActivity(new Intent(android.provider.Settings.ACTION_APPLICATION_SETTINGS));
return true;
default:
return super.onOptionsItemSelected(item);
}
}
#Override
public void onTabUnselected(ActionBar.Tab tab,
FragmentTransaction fragmentTransaction) {
}
#Override
public void onTabReselected(ActionBar.Tab tab,
FragmentTransaction fragmentTransaction) {
}
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
Fragment fragment = null;
switch (position) {
case 0:
fragment = new CalcFragment();
break;
case 1:
fragment = new HomeFragment();
break;
case 2:
fragment = new DriveFragment();
break;
}
return fragment;
}
#Override
public int getCount() {
return 3;
}
#Override
public CharSequence getPageTitle(int position) {
Locale l = Locale.getDefault();
switch (position) {
case 0:
return getString(R.string.title_section1).toUpperCase(l);
case 1:
return getString(R.string.title_section2).toUpperCase(l);
case 2:
return getString(R.string.title_section3).toUpperCase(l);
}
return null;
}
}
public static class HomeFragment extends Fragment {
public static final String ARG_SECTION_NUMBER = "section_number";
public HomeFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.activity_homebar,
container, false);
return rootView;
}
}
public static class CalcFragment extends Fragment {
public static final String ARG_SECTION_NUMBER = "section_number";
public CalcFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.activity_calculator,
container, false);
return rootView;
}
}
public static class DriveFragment extends Fragment {
public static final String ARG_SECTION_NUMBER = "section_number";
public DriveFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_home_dummy,
container, false);
TextView dummyTextView = (TextView) rootView
.findViewById(R.id.section_label);
dummyTextView.setText("DRIVE");
return rootView;
}
}
}
activity_homebar
<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:background="#drawable/bg"
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=".HomeBar" >
<ImageButton
android:id="#+id/apps"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:background="#drawable/appdrawer"
android:src="#drawable/appdrawer" />
<ImageButton
android:id="#+id/wbrowser"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignTop="#+id/apps"
android:src="#drawable/browser" />
</RelativeLayout>
AllApps.java:
package com.dva.schooltoolshome;
import android.app.LauncherActivity;
import android.content.Intent;
public class AllApps extends LauncherActivity {
#Override
protected Intent getTargetIntent () {
// just a example, you should replace the method yourself
Intent intent = new Intent();
intent.setAction(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
return intent;
}
}
I'm am still learning so please don't judge
Thanks in advance
Regards
Rapsong11

You can easily find the answer to your question with a bit of googling. It has been asked many times before. I will point you in the right direction.
To add functionality to a button you have to first make the button (view) aware it can be clicked. This can be done in java programatically (research this yourself) or in the xml like so:
android:onClick="onClickDoStuff"
Then you have to implement the onClickDoStuff method which will look like:
public void onClickDoStuff(View view) {
//Do stuff on click
}
You wanted the button to open a new activity onClick to do that you would require an intent have a look here for futher guidance

Using Google Analytics To Track Fragments

Just need to know the proper way to implement Google analytics to track when a user is on a fragment in real time this is what is do now
#Override
public void onResume() {
super.onResume();
Tracker myTracker = parentActivity.getTracker();
myTracker.setCustomMetric(1, (long) 1);
myTracker.sendView("Music View");
}
the getTracker class is in my main activity and just returns the instance of tracker in the main activity
Any help would be much appreciated!

Mochini's answer uses Google Analytics V2. Bellow you can see how to do it on V4 and V3:
V4:
Application:
public class YourApplication extends Application
{
public synchronized Tracker getTracker() {
try {
final GoogleAnalytics googleAnalytics = GoogleAnalytics.getInstance(this);
return googleAnalytics.newTracker(R.xml.analytics);
}catch(final Exception e){
Log.e(TAG, "Failed to initialize Google Analytics V4");
}
return null;
}
}
res/xml/analytics.xml (you can name it anything, it does not need to be called "analytics")
<?xml version="1.0" encoding="utf-8" ?>
<resources xmlns:tools="http://schemas.android.com/tools" tools:ignore="TypographyDashes">
<!--Replace placeholder ID with your tracking ID-->
<string name="ga_trackingId">UA-XXXXXXXX-X</string>
<!--Enable automatic activity tracking-->
<bool name="ga_autoActivityTracking">true</bool>
<!--Disable automatic exception tracking-->
<bool name="ga_reportUncaughtExceptions">false</bool>
</resources>
build.gradle:
compile 'com.google.android.gms:play-services:7.3.0'
Fragment superclass:
public abstract class TrackedFragment extends Fragment{
#Override
public void onResume() {
super.onResume();
final Tracker tracker = yourApplicationInstance.getTracker();
if(tracker != null){
tracker.setScreenName(getClass().getSimpleName());
tracker.send(new HitBuilders.ScreenViewBuilder().build());
}
}
}
V3
import android.os.Bundle;
import android.support.v4.app.Fragment;
import com.google.analytics.tracking.android.EasyTracker;
import com.google.analytics.tracking.android.Fields;
import com.google.analytics.tracking.android.MapBuilder;
import com.google.analytics.tracking.android.Tracker;
public abstract class TrackedFragment extends Fragment{
private Tracker tracker;
#Override
public void onActivityCreated(final Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
this.tracker = EasyTracker.getInstance(getActivity());
}
#Override
public void onResume() {
super.onResume();
this.tracker.set(Fields.SCREEN_NAME, getClass().getSimpleName());
this.tracker.send( MapBuilder.createAppView().build() );
}
}
Source: https://developers.google.com/analytics/devguides/collection/android/v3/migration

This an example using FragmentActivity and fragments:
Create XML file in value folder (values/analytics.xml):
<?xml version="1.0" encoding="utf-8"?>
<resources>
<!-- Replace placeholder ID with your tracking ID -->
<string name="ga_trackingId">XX-xxxxxxxx-x</string>
<!-- Enable Activity tracking -->
<bool name="ga_autoActivityTracking">true</bool>
<!-- Enable debug -->
<bool name="ga_debug">true</bool>
<!-- The screen names that will appear in your reporting -->
<string name="com.example.myapp.FragmentActivity">Fragment activity</string>
<!--
The inverval of time after all the collected data
should be sent to the server, in seconds.
-->
<integer name="ga_dispatchPeriod">20</integer>
</resources>
In your FragmentActivity class, add this:
#Override
protected void onStart() {
super.onStart();
EasyTracker.getInstance().setContext(this.getBaseContext());
EasyTracker.getInstance().activityStart(this); // Add this method
}
#Override
protected void onStop() {
super.onStop();
EasyTracker.getInstance().activityStop(this); // Add this method
}
Create new class in your package: TrackedFragment.java
public class TrackedFragment extends Fragment {
private Tracker tracker;
private String activityId;
private String fragmentId;
#Override
public void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
EasyTracker.getInstance().setContext(getActivity().getApplicationContext());
this.tracker = EasyTracker.getTracker();
this.fragmentId = getClass().getSimpleName();
this.activityId = getActivity().getClass().getSimpleName();
}
#Override
public void onResume() {
super.onResume();
this.tracker.sendView("/" + this.activityId + "/" + this.fragmentId);
}
}
Finally, your fragment should extend from TrackedFragment like:
public class NewFragment extends TrackedFragment {
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.newfragment, null);
}
}

Tracking methods section suggests that you just need to call EasyTracker.getInstance().setContext(getActivity()); first, then you can use the tracker in "other classes".
manual screen tracking section suggests that you can track a Fragment view with myTracker.sendView("Home Screen");

Another approach for V3 (since onResume() is tied to the Activity and not the Fragment. This works well when the parent/child relationships are well-known.
Parent Fragment sends initial event onStart():
public class ParentFragment extends Fragment {
private Tracker mTracker;
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mTracker = EasyTracker.getInstance(getActivity());
}
#Override
public void onStart() {
super.onStart();
mTracker.set(Fields.SCREEN_NAME, "Parent Fragment");
mTracker.send(MapBuilder.createAppView().build());
}
}
Child Fragment overrides both onStart() and onStop() :
public class ChildFragment extends Fragment {
private Tracker mTracker;
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mTracker = EasyTracker.getInstance(getActivity());
}
#Override
public void onStart() {
super.onStart();
mTracker.set(Fields.SCREEN_NAME, "Child Fragment");
mTracker.send(MapBuilder.createAppView().build());
}
#Override
public void onStop() {
super.onStop();
mTracker.set(Fields.SCREEN_NAME, "Parent Fragment");
mTracker.send(MapBuilder.createAppView().build());
}
}

Tiago's version can't be used in the new goole analytics v4. Instead, use this code from Google's docs
package com.google.android.apps.mobileplayground;
import com.google.android.apps.mobileplayground.AnalyticsSampleApp.TrackerName;
import com.google.android.gms.analytics.GoogleAnalytics;
import com.google.android.gms.analytics.HitBuilders;
import com.google.android.gms.analytics.Tracker;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
/**
* Class to exercise Event hits.
*/
public class EventFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
View view = inflater.inflate(R.layout.event, container, false);
setupEvent(view, R.id.video1Play, R.string.videoCategory, R.string.videoPlay, R.string.video1);
setupEvent(view, R.id.video1Pause, R.string.videoCategory, R.string.videoPause,
R.string.video1);
setupEvent(view, R.id.video2Play, R.string.videoCategory, R.string.videoPlay, R.string.video2);
setupEvent(view, R.id.video2Pause, R.string.videoCategory, R.string.videoPause,
R.string.video2);
setupEvent(view, R.id.book1View, R.string.bookCategory, R.string.bookView, R.string.book1);
setupEvent(view, R.id.book1Share, R.string.bookCategory, R.string.bookShare, R.string.book1);
final Button dispatchButton = (Button) view.findViewById(R.id.eventDispatch);
dispatchButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// Manually start a dispatch (Unnecessary if the tracker has a dispatch interval)
GoogleAnalytics.getInstance(getActivity().getApplicationContext()).dispatchLocalHits();
}
});
return view;
}
private void setupEvent(View v, int buttonId, final int categoryId, final int actionId,
final int labelId) {
final Button pageviewButton = (Button) v.findViewById(buttonId);
pageviewButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// Get tracker.
Tracker t = ((AnalyticsSampleApp) getActivity().getApplication()).getTracker(
TrackerName.APP_TRACKER);
// Build and send an Event.
t.send(new HitBuilders.EventBuilder()
.setCategory(getString(categoryId))
.setAction(getString(actionId))
.setLabel(getString(labelId))
.build());
}
});
}
}

with android google analytics v4
i tried this and it worked
refering this https://developers.google.com/analytics/devguides/collection/android/v4/events
import java.net.URLEncoder;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Xml.Encoding;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebView;
import android.widget.ScrollView;
import android.widget.TextView;
import com.Blog.gkgyan.AnalyticsSampleApp.TrackerName;
import com.Blog.gkgyan.parser.RSSFeed;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdView;
import com.google.android.gms.analytics.GoogleAnalytics;
import com.google.android.gms.analytics.HitBuilders;
import com.google.android.gms.analytics.Tracker;
public class DetailFragment extends Fragment {
private int fPos;
RSSFeed fFeed;
String country;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
fFeed = (RSSFeed)getArguments().getSerializable("feed");
fPos = getArguments().getInt("pos");
Tracker t = ((AnalyticsSampleApp) getActivity().getApplication()).getTracker(
TrackerName.APP_TRACKER);
// Build and send an Event.
t.send(new HitBuilders.EventBuilder()
.setCategory(fFeed.getItem(fPos).getTitle())
.setAction("viewpager click")
.setLabel("viewpager label")
.build());
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.detail_fragment, container, false);
// Initializr views
TextView title = (TextView)view.findViewById(R.id.title);
WebView desc = (WebView)view.findViewById(R.id.desc);
// Enable the vertical fading edge (by default it is disabled)
ScrollView sv = (ScrollView)view.findViewById(R.id.sv);
sv.setVerticalFadingEdgeEnabled(true);
// Set the views
desc.getSettings().setJavaScriptEnabled(true);
title.setText(fFeed.getItem(fPos).getTitle());
country = "<html xmlns=\"http://www.w3.org/1999/xhtml\"><head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=iso-8859-1\"><style type=\"text/css\">p{text-align:justify;font-size:125%;}</style></head><body>" + "<p>" + fFeed.getItem(fPos).getDescription()+"</p>"+"</body></html>";
//desc.loadData( country, "text/html", "UTF-8");
//desc.loadData( country, "text/html; charset=utf-8", "utf-8");
desc.loadData( URLEncoder.encode(country).replaceAll("\\+", " "), "text/html", Encoding.UTF_8.toString());
return view;
}
}