Develop Reference

Navigation drawer implementation with activities using inheritance

In my app I have to use navigation drawer with all activities. So I have created a base activity called DrawerActivity. I wrote the code for navigation drawer in DrawerActivity and then extended the UserDashBoardActivity from DrawerActivity.
The problem is that DrawerActivity properties aren't executed in UserDashBoardActivity. I can't interact with DrawerActivity in UserDashBoardActivity. Here that drawer menu is in ActionBar in all the activities.
This is my DrawerActivity
public class DrawerActivity extends ActionBarActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.drawer_list_view);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.left_drawer);
mDrawerItems = getResources().getStringArray(R.array.navigation_drawer_items_array);
//mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
mDrawerList.setAdapter(new ArrayAdapter<String>(
this, R.layout.drawer_list_items, mDrawerItems));
mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
mDrawerToggle = new ActionBarDrawerToggle(this,
mDrawerLayout, R.drawable.ic_menu,
R.string.drawer_open, R.string.drawer_close) {
public void onDrawerOpened(View view) {
invalidateOptionsMenu();
}
public void onDrawerClosed(View view) {
invalidateOptionsMenu();
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
}
#Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
mDrawerToggle.syncState();
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
mDrawerToggle.onConfigurationChanged(newConfig);
}
#Override
public boolean onPrepareOptionsMenu(Menu menu) {
boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
for (int index = 0; index < menu.size(); index++) {
MenuItem menuItem = menu.getItem(index);
if (menuItem != null) {
// hide the menu items if the drawer is open
menuItem.setVisible(!drawerOpen);
}
}
return super.onPrepareOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
return super.onOptionsItemSelected(item);
}
private class DrawerItemClickListener implements ListView.OnItemClickListener {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
switch (position) {
case 0: {
Intent intent = new Intent(DrawerActivity.this, UserDashBoardActivity.class);
startActivity(intent);
break;
}
case 1: {
Intent intent = new Intent(DrawerActivity.this, AdmissionActivity.class);
startActivity(intent);
break;
}
default:
break;
}
mDrawerLayout.closeDrawer(mDrawerList);
}
}
This is my UseDashBoardActivity
public class UserDashBoardActivity extends DrawerActivity {
private Context context;
private ImageButton searchBtn;
private ImageButton favBtn;
private ImageButton profileBtn;
private ImageButton reminderBtn;
private ImageButton logoutBtn;
private ImageButton notificationBtn;
private ImageView seatchIcon;
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;
// slide menu items
private String[] navMenuTitles;
private TypedArray navMenuIcons;
#Override
protected void onStart() {
super.onStart();
AppActivityStatus.setActivityStarted();
AppActivityStatus.setActivityContext(context);
}
#Override
protected void onPause() {
super.onPause();
AppActivityStatus.setActivityStoped();
}
#Override
protected void onResume() {
super.onResume();
AppActivityStatus.setActivityStarted();
}
#Override
protected void onStop() {
super.onStop();
AppActivityStatus.setActivityStoped();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_user_dash_boad, menu);
return true;
}
// delete the selected event from event list added here
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_notify:
return true;
case R.id.action_favourite:
return true;
case R.id.action_navigation:
}
return super.onOptionsItemSelected(item);
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getSupportActionBar().setCustomView(R.layout.action_bar_layout);
setContentView(R.layout.user_dash_board);
context = getApplicationContext();
searchBtn = (ImageButton) findViewById(R.id.search_btn);
favBtn = (ImageButton) findViewById(R.id.fav_btn);
profileBtn = (ImageButton) findViewById(R.id.profile_btn);
reminderBtn = (ImageButton) findViewById(R.id.reminder_btn);
notificationBtn = (ImageButton) findViewById(R.id.notification_btn);
logoutBtn = (ImageButton) findViewById((R.id.logout_btn));
final EditText Search = (EditText)findViewById(R.id.emailAddress);
mDrawerList = (ListView)findViewById(R.id.drawer_layout);
searchBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
Intent regAct = new Intent(getApplicationContext(), SearchActivity.class);
// Clears History of Activity
regAct.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(regAct);
}
});
favBtn.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View arg0){
Intent tabAct = new Intent(getApplicationContext(),TabHostActivity.class);
tabAct.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(tabAct);
}
});
profileBtn.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View arg0) {
Intent tabAct = new Intent(getApplicationContext(),AboutCollegeActivity.class);
tabAct.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(tabAct);
}
});
}
}
This is my actionbar xml
<?xml version="1.0" encoding="utf-8"?>
<menu
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:appmunu="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context="com.after2.svirtzone.after2_gradle.UserDashBoardActivity">
<item
android:id="#+id/action_notify"
android:icon="#drawable/mail_icon"
appmunu:showAsAction="always"
android:title="Notification" />
<item
android:id="#+id/action_favourite"
android:icon="#drawable/favourite_icon"
appmunu:showAsAction="always"
android:title="Favourite" />
<item
//this is the menu button for navigation drawer
android:id ="#+id/action_navigation"
android:icon="#drawable/ic_menu"
appmunu:showAsAction = "always"
android:title="navigation"
android:layout_gravity="left"/>
</menu>
This is the xml layout for navigationdrawer listview
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!-- The main content view -->
<FrameLayout
android:id="#+id/activity_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" ></FrameLayout>
<!-- The navigation drawer -->
<ListView
android:id="#+id/left_drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#111"
android:choiceMode="singleChoice"
android:divider="#android:color/transparent"
android:dividerHeight="0dp" />
</android.support.v4.widget.DrawerLayout>
This layout is UserDashboard layout
?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:layout_gravity="center"
android:background="#color/appblue"
android:orientation="vertical">
<EditText
android:id="#+id/emailAddress"
android:layout_width="fill_parent"
android:layout_height="100dp"
android:background="#drawable/edit_text_style"
android:gravity="center|start"
android:hint="#string/edittext_hint"
android:inputType="textEmailAddress"
android:maxLength="40"
android:textSize="18sp"
android:visibility="gone" />
<ImageView
android:id="#+id/search_icon_btn"
android:layout_width="wrap_content"
android:layout_height="80dp"
android:layout_marginLeft="580dp"
android:layout_marginRight="10dp"
android:layout_marginTop="-90dp"
android:padding="5dp"
android:src="#drawable/search_icon" />
<ImageButton
android:id="#+id/search_btn"
android:layout_width="250dp"
android:layout_height="250dp"
android:layout_gravity="center_horizontal"
android:layout_marginLeft="5dp"
android:layout_marginRight="210dp"
android:layout_marginTop="30dp"
android:background="#drawable/search_blue"
android:gravity="center" />
<TextView
android:id="#+id/searchCollege"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="80dp"
android:layout_marginRight="100dp"
android:layout_marginTop="20dp"
android:text="#string/search_college"
android:textColor="#color/green"
android:textSize="30sp" />
<ImageButton
android:id="#+id/fav_btn"
android:layout_width="250dp"
android:layout_height="250dp"
android:layout_gravity="center_horizontal"
android:layout_marginLeft="200dp"
android:layout_marginRight="5dp"
android:layout_marginTop="-305dp"
android:background="#drawable/fav_blue"
android:gravity="center" />
<TextView
android:id="#+id/myFavourites"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="500dp"
android:layout_marginRight="10dp"
android:layout_marginTop="20dp"
android:text="#string/my_favourites"
android:textColor="#color/green"
android:textSize="30sp" />
</LinearLayout>
The UserDashboard activity is executed as it is but I need the property of DrawerActivity to be executed along with this activity. How to do it?

Let the parent Activity add the required ViewGroup as child of the FrameLayout. To achieve this, use the following method for DrawerActivity:
protected void addToContentView(int layoutResID)
{
// as part of onCreate() we had already
// setContentView(R.layout.activity_drawer);
if (layoutResID >= 0)
{
Toast.makeText(this, "activity content found", Toast.LENGTH_LONG).show();
FrameLayout fl = (FrameLayout)findViewById(R.id.activity_frame);
View.inflate(this, layoutResID, fl);
}
else
{
Toast.makeText(this, "activity content missing", Toast.LENGTH_LONG).show();
}
}
Then, in the onCreate() method of the child Activity:
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
// call this instead of setContentView()
addToContentView(R.layout.activity_user_dashboard);
// put here your code as before...
}

Drawer's layout:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
/>
<!--you need to add everything to this frameLayout then only you will be able to access Navigation DrawerLayout-->
<FrameLayout
android:id="#+id/fragment"
android:layout_width="match_parent"
android:layout_height="match_parent"></FrameLayout>
</LinearLayout>
<ListView
android:id="#+id/navigation_list"
android:layout_width="320dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:divider="#android:color/transparent"
android:dividerHeight="0dp"
android:fitsSystemWindows="true"
android:background="#color/white"
/>
</android.support.v4.widget.DrawerLayout>
The Activity with Drawer:(Only important code is shown)
public abstract class BaseDrawerLayoutActivity extends AppCompatActivity implements OnItemClickListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.base_drawer_layout_activity);
//rest of the things
//NOTE: loadNavMenu is abstract so that you can implement it in other activities as per you need, otherwise remove this and load it here itself
loadNavMenu();
}
protected abstract void loadNavMenu();
// call this method whenever you enter new activity and load the fragment here.
public void showFragment(Fragment object, String title) {
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.fragment, object);
transaction.commit();
}}
Those activities which need the drawer menu can inherit above class. Not inflate all the layout's inside FrameLayout only.
public class MainActivity extends BaseDrawerLayoutActivity {
public static final String TAG = OLMSActivity.class.getSimpleName();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//the method below will call the BaseDrawerLayoutActivity method and change the fragment for you to see.
showFragment(new MyProfileFragment(), "My Profile");
}
#Override
protected void loadNavMenu() {
NavItems.clear();
//load your menu items
}
private void loadNavFavourites(){
//todo
}}
MyProfileFragment is just a class with fragment and this one call inflate a layout in its OnCreateView method.

Searchview like Youtube app

what i am trying to implement is the ability for the user to search through the app. I want to do something like Youtube app as looks in the Screenshot below
The thing is that i dont know how to implement it into my app.
I have started with the options menu but for some reason the icon does not get displayed in the toolBar
My Code:
<menu 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"
tools:activity=".ProductsNewOrder">
<item android:id="#+id/search"
android:title="#string/search"
android:visible="true"
android:icon="#android:drawable/ic_menu_search"
app:actionViewClass="android.support.v7.widget.SearchView"
app:showAsAction="always" />
<item android:id="#+id/cart"
android:title="Cart"
android:visible="true"
android:icon="#drawable/abc_ic_menu_share_mtrl_alpha"
app:showAsAction="always" />
</menu>
The searchable.xml
<?xml version="1.0" encoding="utf-8"?>
<searchable xmlns:android="http://schemas.android.com/apk/res/android"
android:label="#string/search"
android:hint="#string/search" >
</searchable>
Manifest.xml
And where i create the options menu:
public class ProductsViewOrder extends FragmentActivity {
private ViewPager viewPager;
private ProductsTabPagerAdapter mAdapter;
private PagerSlidingTabStrip tabs;
#TargetApi(Build.VERSION_CODES.LOLLIPOP)
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.new_order);
getActionBar().setElevation(0);
viewPager = (ViewPager) findViewById(R.id.pager);
Intent intent = getIntent();
String title = intent.getStringExtra("tableID");
getActionBar().setTitle(getString(R.string.table_id) + title);
mAdapter = new ProductsTabPagerAdapter(getSupportFragmentManager(), ProductsViewOrder.this, ProductsViewOrder.this);
viewPager.setAdapter(mAdapter);
tabs = (PagerSlidingTabStrip) findViewById(R.id.tabs);
tabs.setViewPager(viewPager);
tabs.setDividerColor(Color.TRANSPARENT);
tabs.setIndicatorColor(Color.WHITE);
tabs.setIndicatorHeight(6);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_new_order, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()){
case R.id.search:{
return true;
}
case R.id.cart:{
return true;
}
default:{
return super.onOptionsItemSelected(item);
}
}
}
private void showSearchResults() {
}
#Override
public void onBackPressed() {
super.onBackPressed();
overridePendingTransition(R.anim.slide_out_left, R.anim.slide_in_left);
}
}
When i tap on search icon nothing happens.
Anyone can help me??

You can use PersistentSearch library link
Just a simple search with google :)

Toolbar sets the wrong icon

In my application I want to set a custom menu for the toolbar. The icon that I defined in the menu_settings.xml is an arrow, but when I start the application, it's a three-point menu instead of the arrow (as seen in the Pictures). After hours of research I still can't figure out why it loads this icon instead of the arrow (yes I checked the drawable ;) ). Thank you for solutions and hints!
SettingsActivity:
public class SettingsActivity extends PreferenceActivity {
private AppCompatDelegate mDelegate;
#Override
protected void onCreate(Bundle savedInstanceState) {
getDelegate().installViewFactory();
getDelegate().onCreate(savedInstanceState);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_settings);
Toolbar toolbar = (Toolbar) findViewById(R.id.tool_bar);
setSupportActionBar(toolbar);
Intent intent = getIntent();
boolean hasConfiguredSettings = intent.getBooleanExtra(HAS_CONFIGURED_SETTINGS, false);
if (hasConfiguredSettings) {
toolbar.setTitle("Wähle deine Linien!");
} else {
// Back button in Toolbar
toolbar.setNavigationIcon(R.drawable.abc_ic_ab_back_mtrl_am_alpha);
toolbar.setNavigationOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
onBackPressed();
}
});
}
// Display the fragment as the main content.
getFragmentManager().beginTransaction()
.replace(R.id.content, new SettingsFragment())
.commit();
}
private void setSupportActionBar(Toolbar toolbar) {
getDelegate().setSupportActionBar(toolbar);
}
private AppCompatDelegate getDelegate() {
if (mDelegate == null) {
mDelegate = AppCompatDelegate.create(this, null);
}
return mDelegate;
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
Intent intent = getIntent();
boolean hasConfiguredSettings = intent.getBooleanExtra("HAS_CONFIGURED_SETTINGS", false);
if (hasConfiguredSettings) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu_settings, menu);
return true;
}
return false;
}
}
menu_settings.xml:
<?xml version="1.0" encoding="utf-8"?>
<menu 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"
tools:context=".SettingsActivity">
<item
android:id="#+id/action_checked"
android:orderInCategory="101"
android:title="#string/configuration_action_button"
app:showAsAction="always"
android:icon="#drawable/ic_action_arrow_right"/>
</menu>
toolbar.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:background="#color/primary"
/>
The toolbar is included with:
<include
android:id="#+id/tool_bar"
layout="#layout/toolbar" />

You need to use AppCompatDelegate#getMenuInflater instead of Activity#getMenuInflater().
Replace the below line:
MenuInflater inflater = getMenuInflater();
with
MenuInflater inflater = getDelegate().getMenuInflater();

actionBar setCustomView not workin

I want to change dynamically the aspect of my actionbar. Applying the custom view layout i've created before, but still not working. This is my code:
public class MainActivity extends ActionBarActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ActionBar mActionBar = getSupportActionBar();
mActionBar.setCustomView(R.layout.activity_main);
mActionBar.setDisplayShowTitleEnabled(false);
mActionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
ActionBar mActionBar = getSupportActionBar();
Toast.makeText(this,item.toString(),Toast.LENGTH_LONG).show();
if(item.toString() == "search"){
mActionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
mActionBar.setCustomView(R.layout.search);
}
return super.onOptionsItemSelected(item);
}
Custom layout xml
<?xml version="1.0" encoding="utf-8" ?>
<LinearLayout
xmlns:android="schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText android:id="#+id/etSearch"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="text" />
</LinearLayout>

consider trying item.toString().equals("search")

onCreateView() and onActivityCreated() in MyAddFragment class invokes a lot more than required by working with dynamic fragment

I am new at android app development.I have a problem with my app.I am doing a simple 'Todo List App'. When I deploy my app to android phone.First time it works well.When I change orientation of device, onCreateView() and onActivityCreated() in MyAddFragment works multiple.And 'Add Button' doesn't work after changing orientation.****Please help me how to get rid of the problem.
The following my activity and fragment classes and xml files.
public class MainActivity extends Activity implements Communicator{
FragmentManager man;
private ArrayAdapter<String> todoArrayAdapter;
private ArrayList<String> todoItems;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
man = getFragmentManager();
MyAddFragment f1 = new MyAddFragment();
MyListFragment f2 = new MyListFragment();
FragmentTransaction transaction = man.beginTransaction();
transaction.add(R.id.frameLayout1, f1, "Add");
transaction.add(R.id.frameLayout2, f2,"List");
Log.i("a", "onCreate - ADDED FRAGMENT");
if (savedInstanceState == null) {
todoItems = new ArrayList<String>();
}else {
todoItems = savedInstanceState.getStringArrayList("veri");
}
todoArrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,todoItems);
f2.setListAdapter(todoArrayAdapter);
transaction.commit();
}
public void respond(String data) {
MyListFragment fb = (MyListFragment) man.findFragmentById(R.id.frameLayout2);
todoItems.add(data);
todoArrayAdapter.notifyDataSetChanged();
}
#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);
}
#Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putStringArrayList("veri", todoItems);
}
}
public class MyAddFragment extends Fragment{
Button btnAdd;
EditText txtEdit;
Communicator comm;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_add, container,false);
return view;
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
btnAdd = (Button) getActivity().findViewById(R.id.btnAdd);
txtEdit = (EditText) getActivity().findViewById(R.id.txtEdit);
comm = (Communicator) getActivity();
btnAdd.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
String newRecord = txtEdit.getText().toString();
comm.respond(newRecord);
txtEdit.setText("");
}
});
}
}
public class MyListFragment extends ListFragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_list, container,false);
return view;
}
}
public interface Communicator {
public void respond(String data);
}
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/RelativeLayout1"
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.example.ceng389hw1.MainActivity" >
<FrameLayout
android:id="#+id/frameLayout1"
android:layout_width="fill_parent"
android:layout_height="40dp"
android:layout_alignParentLeft="true"
android:background="#ab3e0f" >
</FrameLayout>
<FrameLayout
android:id="#+id/frameLayout2"
android:layout_width="fill_parent"
android:layout_height="20dp"
android:layout_alignParentBottom="true"
android:layout_below="#+id/frameLayout1"
android:layout_centerHorizontal="true"
android:layout_marginTop="10dp"
android:background="#ab3eab"
>
</FrameLayout>
</RelativeLayout>
fragment_add.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/RelativeLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#ab3e0f">
<Button
android:id="#+id/btnAdd"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:text="#string/btnStringAdd" />
<EditText
android:id="#+id/txtEdit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/btnAdd"
android:layout_alignParentLeft="true"
android:layout_toLeftOf="#+id/btnAdd"
android:ems="10"
android:inputType="text" />
</RelativeLayout>
fragment_list.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="match_parent"
android:orientation="vertical"
android:background="#ab5810" >
<ListView
android:id="#android:id/list"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>

You should change two files in your Application.
First step, you should add following code in androidmanifest file.
android:configChanges="orientation|screenSize"
After you add the code to Androidmanifest, Your androidmanifes file must be like below.
<activity
android:name="com.example.ceng389hw1.MainActivity"
android:configChanges="orientation|screenSize"
android:label="#string/app_name" >
Secon Step, You must be override onConfigurationChanged function like below.
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Checks the orientation of the screen
if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
Toast.makeText( this, "landscape", Toast.LENGTH_SHORT ).show();
} else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT){
Toast.makeText(this, "portrait", Toast.LENGTH_SHORT).show();
}
}
For more detail -> http://developer.android.com/guide/topics/resources/runtime-changes.html#HandlingTheChange

In your main activity check is fragment already added in activity.
#Override
protected void onCreate(Bundle savedInstanceState) {
...
if(getFragmentManager().getFragment("Add")==null) {
//initialize fragment, create transaction and commit
}
...
}

You can add configChanges parametre inside manifest.xml it will provide you to ignore reinilizating after config changes you can do it simply like that
<activity
android:name="com.youractivity"
android:configChanges="orientation" />
I hope it will help you :)