How To Search In Listview From Toolbar In Fragment

How To Search In Listview From Toolbar In Fragment - java

I was using this code to search from my MainActivity Toolbar in a ListView:
SearchView searchView;
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate( R.menu.main, menu);
MenuItem myActionMenuItem = menu.findItem( R.id.action_search);
searchView = (SearchView) myActionMenuItem.getActionView();
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String query) {
return false;
}
#Override
public boolean onQueryTextChange(String s) {
adapter.getFilter().filter(s);
return false;
}
});
return true;
}
But now I moved my Listview to a fragment, how can I pass the adapter from the fragment to the main activity? How can I update the typing?
Is there any better way then passing the adapter?
Thank you in advance

A better approach can be using EventBus. It's really helpful in a scenario like this in which we have to pass certain data from an Activity to a Fragment.
For using EventBus, you need to define a POJO class, somewhat like this:
class SearchQueryEvent {
String query;
public SearchQueryEvent(String query) {
this.query=query;
}
public String getQuery() {
return query;
}
}
Now, your code should be modified like this:
MainActivity.java
SearchView searchView;
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate( R.menu.main, menu);
MenuItem myActionMenuItem = menu.findItem( R.id.action_search);
searchView = (SearchView) myActionMenuItem.getActionView();
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String query) {
return false;
}
#Override
public boolean onQueryTextChange(String s) {
EventBus.getDefault().post(new SearchQueryEvent(s));
return false;
}
});
return true;
}
YourFragment.java
#Override
public void onResume() {
super.onResume();
EventBus.getDefault().register(this);
}
#Override
public void onPause() {
EventBus.getDefault().unregister(this);
super.onPause();
}
#Subscribe(threadMode = ThreadMode.MAIN)
public void onSearchQuery(SearchQueryEvent event) {
String query=event.getQuery();
adapter.getFilter().filter(query);
}

Try This code,
activity_main.xml :
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
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="#009688" />
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/fragment"
android:name="ru.lemmaproj.toolbar_search.MainActivityFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layout="#layout/fragment_main" />
</LinearLayout>
fragment_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"
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=".MainActivityFragment">
<ListView
android:id="#+id/list"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</RelativeLayout>
search_layout.xml :
<EditText xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:cursorVisible="true"
android:imeOptions="actionDone"
android:inputType="text" />
MainActivity.java :
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
}
}
MainActivityFragment.java :
public class MainActivityFragment extends Fragment {
private final String[] items = new String[] { "Android", "iOS", "Windows Phone",
"Blackberry", "WebOS", "Ubuntu", "Windows7", "Max OS X", "Linux", "OS/2" };
private ListView listView;
private ArrayAdapter<String> adapter;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_main, container, false);
listView = (ListView) view.findViewById(R.id.list);
adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, items);
listView.setAdapter(adapter);
return view;
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
setHasOptionsMenu(true);
}
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
inflater.inflate(R.menu.menu_fragment, menu);
MenuItem searchItem = menu.findItem(R.id.menu_search);
SearchView searchView = (SearchView) MenuItemCompat.getActionView(searchItem);
if (searchView != null) {
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String query) {
return true;
}
#Override
public boolean onQueryTextChange(String newText) {
adapter.getFilter().filter(newText);
return true;
}
});
}
}
}

1-> Create a static method in fragment
public static void doSearch(String query){
yourAdapter.filter(query);
}
2-> Call this method from activity on onQueryTextChange method and pass the query you want to search
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.home, menu);
MenuItem myActionMenuItem = menu.findItem(R.id.action_search);
searchViewShop = (SearchView) myActionMenuItem.getActionView();
searchViewShop.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String query) {
return true;
}
#Override
public boolean onQueryTextChange(String newText) {
YourFragment.doSearch(newText);
return true;
}
});
return true;
}

Related

Menu item click in a navigation drawer intent to activity hosting a fragment

Disclaimer: This is the first app I am building so I am learning the hard way to use fragments first, so my code is all over the place.
I have menu items inside a navigation view that loads fine however the menu item clicks don't work. It doesn't crash it just stares at me. I would like to use an intent to display a fragment and I am lost from changing and trying so many different options.
XML FOR NAV DRAWER & MENU ITEMS:
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/activity_pageone"
android:background="#drawable/rygg"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbarThumbVertical="#color/primary_dark_color"
tools:openDrawer="start"
tools:context="com.android.nohiccupsbeta.pageone">
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/fragmentContainer"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<android.support.design.widget.NavigationView
android:id="#+id/navigation_header_container"
app:headerLayout="#layout/header"
android:layout_width="wrap_content"
android:layout_height="match_parent"
app:itemIconTint="#color/category_vodka"
app:itemTextColor="#color/primary_dark_color"
app:menu="#menu/drawermenu"
android:layout_gravity="start" >
</android.support.design.widget.NavigationView>
</FrameLayout>
</android.support.v4.widget.DrawerLayout>
JAVA:
public class pageone extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
DrawerLayout mDrawerLayout;
ActionBarDrawerToggle mToggle;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_pageone);
setupDrawer();
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
mToggle.onConfigurationChanged(newConfig);
}
#Override
public boolean onCreateOptionsMenu(Menu menu){
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.drawermenu, menu);
return true;
}
/**
*
* #param item For the hamburger button
* #return
*/
#Override
public boolean onOptionsItemSelected(MenuItem item) {
if (mToggle.onOptionsItemSelected(item)){
return true;
}
switch (item.getItemId()) {
case R.id.itemWhiskey:
Intent whiskeyIntent = new Intent(pageone.this, whiskeyActivity.class);
startActivity(whiskeyIntent);
return true;
default:
return super.onOptionsItemSelected(item);
}
}
/**
* Make sure the drawer open and closes in sync with UI visual
* #param savedInstanceState
*/
#Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
mToggle.syncState();
}
/**
* Function to make sure all the drawer open & closes properly
*/
public void setupDrawer() {
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
mDrawerLayout = (DrawerLayout) findViewById(R.id.activity_pageone);
mToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.string.drawer_open, R.string.drawer_closed) {
#Override
public void onDrawerClosed(View closeView) {
Toast.makeText(pageone.this, "Happy You Learned", Toast.LENGTH_SHORT).show();
super.onDrawerClosed(closeView);
invalidateOptionsMenu();
}
#Override
public void onDrawerOpened(View openView) {
Toast.makeText(pageone.this, "Effects Of Alcohol", Toast.LENGTH_SHORT).show();
super.onDrawerOpened(openView);
invalidateOptionsMenu();
}
};
mDrawerLayout.addDrawerListener(mToggle);
}
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
MenuItem itemWhiskey = (MenuItem) findViewById(R.id.itemWhiskey);
itemWhiskey.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
#Override
public boolean onMenuItemClick(MenuItem itemWhiskey) {
FragmentManager fm = getSupportFragmentManager();
Fragment effectsFragment = fm.findFragmentById(R.id.frame_container2);
if (effectsFragment == null) {
effectsFragment = new WhiskeyFragment();
fm.beginTransaction().add(R.id.frame_container2, effectsFragment).commit();
getSupportActionBar().setTitle("Whiskey");
itemWhiskey.setChecked(true);
mDrawerLayout.closeDrawers();
}
return true;
}
});
mDrawerLayout.closeDrawer(GravityCompat.START);
return true;
}
}
XML FOR FRAGMENT:
<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:orientation="vertical"
android:id="#+id/frame_container2"
tools:context="com.android.nohiccupsbeta.WhiskeyFragment">
<!-- TODO: Update blank fragment layout -->
<TextView
android:id="#+id/frag_whiskey_skin"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="8dp"
android:textColor="#000000"
android:textSize="16sp" />
<ImageButton
android:id="#+id/expand_collapse"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end|bottom"
android:background="#android:color/transparent"
android:src="#drawable/ic_expand_more"
android:padding="16dp"/>
</FrameLayout>
JAVA:
public class WhiskeyFragment extends Fragment {
private TextView mWhiskeySkin;
#Override
public void onViewCreated(View view, #Nullable Bundle SavedInstanceState) {
super.onViewCreated(view, SavedInstanceState);
getActivity().setTitle("WHISKEY EFFECTS");
mWhiskeySkin = (TextView) view.findViewById(R.id.frag_whiskey_skin);
mWhiskeySkin.setText(R.string.whiskey_skin);
hasOptionsMenu();
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v = inflater.inflate(R.layout.fragment_whiskey, container, false);
hasOptionsMenu();
return v;
}
}
XML FOR SECOND ACTIVITY:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/frame_container"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
JAVA:
public class whiskeyActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_whiskey);
}
public class Whiskeyed {
private String whiskeySkin;
private String whiskeyBrain;
public String getWhiskeySkin(){
return whiskeySkin;
}
public String getWhikeyBrain(){
return whiskeyBrain;
}
public void setWhiskeySkin(String whiskey_skin){
this.whiskeySkin = whiskey_skin;
}
public void setWhiskeyBrain(String whiskeyBrain) {
this.whiskeyBrain = whiskeyBrain;
}
}
}

try to change to content of your onNavigationItemSelected of your pageone.java
from here:
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
MenuItem itemWhiskey = (MenuItem) findViewById(R.id.itemWhiskey);
itemWhiskey.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
#Override
public boolean onMenuItemClick(MenuItem itemWhiskey) {
FragmentManager fm = getSupportFragmentManager();
Fragment effectsFragment = fm.findFragmentById(R.id.frame_container2);
if (effectsFragment == null) {
effectsFragment = new WhiskeyFragment();
fm.beginTransaction().add(R.id.frame_container2, effectsFragment).commit();
getSupportActionBar().setTitle("Whiskey");
itemWhiskey.setChecked(true);
mDrawerLayout.closeDrawers();
}
return true;
}
});
mDrawerLayout.closeDrawer(GravityCompat.START);
return true;
}
to here:
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
DrawerLayout mDrawerLayout = (DrawerLayout) findViewById(R.id.activity_pageone); // ID of your drawerLayout
int id = item.getItemId();
switch (id) {
case R.id.menu1: // Change this as your menuitem in menu.xml.
// Your fragment code goes here..
FragmentManager fm = getSupportFragmentManager();
Fragment effectsFragment = fm.findFragmentById(R.id.frame_container2);
if (effectsFragment == null) {
effectsFragment = new WhiskeyFragment();
fm.beginTransaction().add(R.id.frame_container2, effectsFragment).commit();
getSupportActionBar().setTitle("Whiskey");
itemWhiskey.setChecked(true);
mDrawerLayout.closeDrawers();
}
break;
case R.id.menu2: // Change this as your menuitem in menu.xml.
// or Your fragment code goes here...
break;
}
mDrawerLayout.closeDrawer(GravityCompat.START, true);
return true;
}

Android Searchview in toolbar not working in older versions

My toolbar has a searchView inside and both ate not registering any touch events on android 4.3 (in fact the event goes to the view below them). It should register homeAsUp, the searchView field (requestFocus) and X button to clear the field. For now what I am thinking is attaching listeners to these but is there a better way.
#Override
public boolean onPrepareOptionsMenu(Menu menu) {
super.onPrepareOptionsMenu(menu);
MenuItem menuItem = menu.findItem(R.id.app_bar_search);
SearchView searchView = new SearchView(this);
searchView.setIconifiedByDefault(false);
searchView.setIconified(false);
searchView.requestFocus();
searchView.setMaxWidth(Integer.MAX_VALUE);
searchView.setQueryHint(getString(R.string.search));
ImageView searchViewIcon = (ImageView)searchView.findViewById(android.support.v7.appcompat.R.id.search_mag_icon);
ViewGroup linearLayoutSearchView =(ViewGroup) searchViewIcon.getParent();
linearLayoutSearchView.removeView(searchViewIcon);
menuItem.setActionView(searchView);
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String query) { return false; }
#Override
public boolean onQueryTextChange(String newText) {
presenter.queryChanged(newText);
return true;
}
});
return true;
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.search, menu);
return true;
}
menu/search.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="#+id/app_bar_search"
app:actionViewClass="android.support.v7.widget.SearchView"
android:icon="#drawable/ic_search_white_24dp"
android:title="#string/search"
app:showAsAction="always" />
</menu>
It works fine in newer versions though (don't know which one is the border between working/not working).
EDIT:
Attaching a listener to the searchview doesn't work either.

don't make new instance of SearchView fetch it from the menuItem:
replace this line
SearchView searchView = new SearchView(this);
with
SearchView searchView = (SearchView) menuItem .getActionView();
and remove following line:
menuItem.setActionView(searchView);
following code is working fine for me:
#Override
public boolean onCreateOptionsMenu( Menu menu) {
getMenuInflater().inflate( R.menu.menu_main, menu);
MenuItem myActionMenuItem = menu.findItem( R.id.action_search);
final SearchView searchView = (SearchView) myActionMenuItem.getActionView();
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String query) {
return false;
}
#Override
public boolean onQueryTextChange(String newText) {
if (TextUtils.isEmpty(newText)) {
adapter.filter("");
listView.clearTextFilter();
} else {
adapter.filter(newText);
}
return true;
}
});
return true;
}

what about doing it using EditText ... it is going to run for all versions.
1- In YourActivity.xml remove android.support.design.widget.AppBarLayout attribute then add
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:popupTheme="#style/AppTheme.PopupOverlay" >
<EditText
android:id="#+id/search_edit_text"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginStart="24dp"
android:backgroundTint="[TINT_COLOR]"
android:hint="Search"
android:inputType="[INPUT TYPE]"
android:textColorHint="[HINT_COLOR]"
android:layout_marginEnd="16dp"/>
</android.support.v7.widget.Toolbar>
2-In YourActivity.java code add this listener on search edittext
private TextWatcher searchTextWatcher =
new TextWatcher() {
#Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
#Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
presenter.queryChanged(charSequence.toString());
}
#Override
public void afterTextChanged(Editable editable) {
}
};

Unable to start activity. Caused by: android.view.InflateException:

LogCat Error:
https://github.com/Heromine/tempapp1/issues/2
Can anybody tell me, why I am getting this error?
I don't understand what i am doing wrong:
MainActivity.java:
public class MainActivity extends ActionBarActivity {
// UI elements
public static Toolbar toolbar;
public static ViewPager viewPager;
private AppSectionsPagerAdapter mAppSectionsPagerAdapter;
// Tab titles
private String[] tabs = {"Home", "Note"};
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
SharedPreferences settings = getSharedPreferences("prefs", 0);
boolean firstRun = settings.getBoolean("firstRun", true);
if (firstRun) { // here run your first-time instructions, for example :
startActivity(new Intent(this, MyIntro.class));
SharedPreferences.Editor editor = settings.edit();
editor.putBoolean("firstRun", false);
editor.commit();
}
mAppSectionsPagerAdapter = new AppSectionsPagerAdapter(getSupportFragmentManager());
// Set up the action/tool bar.
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar); // Setting toolbar with setSupportActionBar()
// Initilization
viewPager = (ViewPager) findViewById(R.id.pager);
viewPager.setAdapter(mAppSectionsPagerAdapter);
/* ViewPager.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
swipeLayout.setEnabled(false);
switch (event.getAction()) {
case MotionEvent.ACTION_UP:
swipeLayout.setEnabled(true);
break;
}
return false;
}
});
*/
// Adding Tabs
PagerSlidingTabStrip tabs = (PagerSlidingTabStrip) findViewById(R.id.tabs);
tabs.setViewPager(viewPager);
tabs.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
#Override
public void onPageSelected(int position) {
// When swiping between different app sections
// change toolbar title
if (position == 0)
toolbar.setTitle(getResources().getString(R.string.app_name));
}
});
}
#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) {
switch (item.getItemId()) {
case R.id.action_settings:
startActivity(new Intent("android.intent.action.SettingsActivity"));
return true;
case R.id.action_donate:
startActivity(new Intent("android.intent.action.DonateActivity"));
return true;
case R.id.action_rate:
Intent i2 = new Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id=com.service.beta.servicenotesbeta"));
startActivity(i2);
return super.onOptionsItemSelected(item);
default:
return super.onOptionsItemSelected(item);
}
}
public static class AppSectionsPagerAdapter extends FragmentPagerAdapter {
public AppSectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public android.support.v4.app.Fragment getItem(int i) {
switch (i) {
case 0:
return new Fragment_main();
case 1:
return new Fragment_second();
/*case 2:
return new Fragment_third();
case 3:
return new Fragment_fourth();*/
default:
return null;
}
}
#Override
public int getCount() {
return 2; //3-4
}
}
}
activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
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:orientation="vertical">
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
style="#style/ToolBarStyle"
android:id="#+id/toolbar"/>
<com.astuetz.PagerSlidingTabStrip
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="48dip" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentTop="true" />
</RelativeLayout>
</LinearLayout>
Please tell me what i am doing wrong
I put the issue link because when i put the issue code it gives me an error

Caused by: java.lang.NullPointerException: Attempt to invoke interface method 'java.lang.String java.lang.CharSequence.toString()' on a null object reference
at com.astuetz.PagerSlidingTabStrip.notifyDataSetChanged(PagerSlidingTabStrip.java:200)
at com.astuetz.PagerSlidingTabStrip.setViewPager(PagerSlidingTabStrip.java:182)
at com.service.beta.servicenotesbeta.MainActivity.onCreate(MainActivity.java:67)
there is a problem with <com.astuetz.PagerSlidingTabStrip
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="48dip" />
have you looked at https://github.com/astuetz/PagerSlidingTabStrip/ for further infos?

Go to AppSectionsPagerAdapter.java and add this piece of code necessary to provide a title that your PagerSlidingTabStrip can obtain.
#Override
public CharSequence getPageTitle(int position) {
if (position == 0)
{
return "Movies";
}
if (position == 1)
{
return "Events";
}
return null;
}

I fixed, the problem was that i didn't add the titles to the tabs

Enable and disable search action in a tabbed activity

I have a tabbed activity with two tabs, and when I am in the second one I want to have a search action be shown in the actionbar. I do not want it to show in the first tab, only the second.
This is what I have for my LaunchActivity.java
public class LaunchActivity extends ActionBarActivity {
ViewPager pager;
int Numboftabs = 2;
boolean searchDisabled = false;
...
#Override
protected void onCreate(Bundle savedInstanceState) {
...
pager = (ViewPager) findViewById(R.id.pager);
pager.setAdapter(adapter);
pager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
#Override
public void onPageSelected(int position) {
if (position == 0) {
searchDisabled = true;
}
}
#Override
public void onPageScrollStateChanged(int state) {
}
});
}
...
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu_launch, menu);
return super.onCreateOptionsMenu(
}
...
#Override
public boolean onPrepareOptionsMenu(Menu menu) {
MenuItem search = menu.findItem(R.id.action_search);
if(searchDisabled) {
search.setEnabled(false);
}
super.onPrepareOptionsMenu(menu);
return true;
}
}
menu_launch.xml
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context=".LaunchActivity">
<item android:id="#+id/action_search"
android:title="#string/action_search"
android:icon="#drawable/ic_action_search"
app:showAsAction="ifRoom" />
<item android:id="#+id/action_settings"
android:title="#string/action_settings"
android:orderInCategory="100"
app:showAsAction="never" />
</menu>
Does anyone know why this is not working? The search action shows up but doesn't hide when on the first tab.

Approach:
You can solve this by adding a class variable for the MenuItem.
MenuItem search;
Then in onPrepareOptionsMenu you only initialize it:
#Override
public boolean onPrepareOptionsMenu(Menu menu) {
search = menu.findItem(R.id.action_search);
super.onPrepareOptionsMenu(menu);
return true;
}
Then in your onPageChangeListener you do this to show/hide the search item:
#Override
public void onPageSelected(int position) {
if (position == 0) {
search.setEnabled(false);
search.setVisible(false);
} else {
search.setEnabled(true);
search.setVisible(true);
}
}
That should achieve what you want to do.
Approach:
Alternative better solution would be to set up the options menu in the fragment:
Add hasOptionsMenu(true) to your Fragment:
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
}
And set the visibility in onCreateOptionsMenu (also in the fragment!):
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
MenuItem search = menu.findItem(R.id.action_search);
search.setEnabled(false);
search.setVisible(false);
super.onCreateOptionsMenu(menu, inflater);
}

Android - Null pointer exception in searchview

I am using a searchview inside fragment and getting a nullpointerexception.
I don't understand why, I'm just trying to get the query...
I'm using a 3 tab fragment and the app crash when launching
MainActivity.java
public class MainActivity extends FragmentActivity implements
ActionBar.TabListener {
private ViewPager viewPager;
private TabsPagerAdapter mAdapter;
private ActionBar actionBar;
// Tab titles
private String[] tabs = { "Search", "Top", "Download", "Library" };
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Initilization
viewPager = (ViewPager) findViewById(R.id.pager);
actionBar = getActionBar();
mAdapter = new TabsPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(mAdapter);
actionBar.setHomeButtonEnabled(false);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
// Adding Tabs
for (String tab_name : tabs) {
actionBar.addTab(actionBar.newTab().setText(tab_name)
.setTabListener(this));
}
/**
* on swiping the viewpager make respective tab selected
* */
viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageSelected(int position) {
// on changing the page
// make respected tab selected
actionBar.setSelectedNavigationItem(position);
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
#Override
public void onPageScrollStateChanged(int arg0) {
}
});
}
#Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
}
#Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// on tab selected
// show respected fragment view
viewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
}
}
SearchFragment.java
public class SearchFragment extends Fragment {
private SearchView searchView1;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_search, container, false);
searchView1 = (SearchView) getActivity().findViewById(R.id.searchView1);
final SearchView.OnQueryTextListener queryTextListener = new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextChange(String newText) {
// Do something
return true;
}
#Override
public boolean onQueryTextSubmit(String query) {
// Do something
performSearch();
return true;
}
};
searchView1.setOnQueryTextListener(queryTextListener);
return rootView;
}
public void performSearch(){
Toast.makeText(getActivity(), "search performer", Toast.LENGTH_SHORT).show();
}
}
fragment_search.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:orientation="vertical"
android:background="#17df0d">
<SearchView
android:id="#+id/searchView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:iconifiedByDefault="false"
android:queryHint="#string/search_hint" >
</SearchView>
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#+id/searchView1" >
</ListView>
</RelativeLayout>
Can you please tell me what i'm doing wrong and how could I succeed?

You should look for the search view in your fragment's view, not in your activity's view.
Change
searchView1 = (SearchView) getActivity().findViewById(R.id.searchView1);
to
searchView1 = (SearchView) rootView.findViewById(R.id.searchView1);

Develop Reference

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