After extending AppCompatActivity instead of Activity, my project is giving the following error:
java.lang.NullPointerException: Attempt to invoke virtual method
'void
android.widget.SearchView.setSearchableInfo(android.app.SearchableInfo)'
on a null object reference
and I followed this link[ this][1] but it did not work for me.
Please give me some suggestions on what I am doing wrong.
This is my code for search:
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
SearchView searchView = (SearchView) menu.findItem(R.id.search).getActionView();
searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
and this is menu xml
<item
android:id="#+id/search"
android:app:actionViewClass="android.widget.SearchView"
android:icon="#drawable/ic_search"
android:app:showAsAction="collapseActionView|always"
android:title="#string/Search"/>
Try using the custom app namespace for your actionViewClass too:
app:actionViewClass="android.support.v7.widget.SearchView"/>
You have to change actionview class of searchview to support and change schema in menu. like this
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item android:id="#+id/search"
android:title="Search"
android:titleCondensed="false"
android:icon="#drawable/abc_ic_search_api_mtrl_alpha"
android:orderInCategory="0"
app:showAsAction="ifRoom|collapseActionView"
app:actionViewClass="android.support.v7.widget.SearchView" />
</menu>
Then in the code you have to get the searchview and use expand listent like this. Remember to use SearchView of support library.
mSearchView = (SearchView) MenuItemCompat.getActionView(mSearchItem);
mSearchView.setQueryHint(mContext.getString(R.string.search_messages));
mSearchView.setIconifiedByDefault(true);
mSearchView.setOnQueryTextListener(this);
MenuItemCompat.setOnActionExpandListener(mSearchItem, new MenuItemCompat.OnActionExpandListener() {
#Override
public boolean onMenuItemActionExpand(MenuItem item) {
return true;
}
#Override
public boolean onMenuItemActionCollapse(MenuItem item) {
}
return true;
}
});
Related
I haven't change any code last week, but this problem suddenly appeared yesterday.
Here is method:
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.search_menu, menu);
MenuItem item = menu.findItem(R.id.menu_search);
SearchView searchView = (SearchView) MenuItemCompat.getActionView(item);
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
});
return super.onCreateOptionsMenu(menu);
}
When I try to open activity that contains SearchView, app closes. Logcat says: attempt to invoke virtual method searchView.setOnQueryTextListener() on a null object reference.
search_menu:
<menu xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="#+id/menu_search"
android:icon="#mipmap/ic_search"
android:title="#string/search"
android:inputType="text"
android:focusableInTouchMode="false"
app:actionViewClass="android.widget.SearchView"
app:showAsAction="ifRoom|collapseActionView" />
</menu>
What is wrong with searchview? I've tried all methods offered in similar questions, but they do not work.
Activity:
public class CategoryActivity extends Activity {
ArrayList<> mArrayList;
CustomAdapter listAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity);
mArrayList = new ArrayList<>();
Objects.requireNonNull(getActionBar()).setBackgroundDrawable(new ColorDrawable(Color.rgb(8,16,38)));
Objects.requireNonNull(getActionBar()).setDisplayHomeAsUpEnabled(true);
You declare in menu xml the wrong type of SearchView:
Change
app:actionViewClass="android.widget.SearchView"
to
app:actionViewClass="android.support.v7.widget.SearchView"
also change:
SearchView searchView = (SearchView) MenuItemCompat.getActionView(item);
to:
SearchView searchView = (SearchView) item.getActionView();
the signature of getActionView() you use is deprecated.
Edit:
In your activity's class, check the imports on top, there must be a line:
import android.support.v7.widget.SearchView;
It's not a duplicate, AS WRITTEN IN MY QUESTION I already tried thoes solutions and got the same error.
I have the following code:
MainActivity
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
SearchView searchView = (SearchView) menu.findItem(R.id.search).getActionView();
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String query) {
search(query);
return true;
}
#Override
public boolean onQueryTextChange(String query) {
//filterSearchFor(query);
return true;
}
});
return true;
}
menu/menu.xml
<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=".MainActivity">
<android.support.v7.widget.SearchView
android:id="#+id/search"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</menu>
I got this error:
FATAL EXCEPTION: main
Process: com.pgoiv.pokemongoiv, PID: 5336
java.lang.NullPointerException: Attempt to invoke interface method 'android.view.View android.view.MenuItem.getActionView()' on a null object reference
at com.pgoiv.pokemongoiv.MainActivity.onCreateOptionsMenu(MainActivity.java:192)
at
Tried few solutions of people who had the same error.. couldn't figure out what's wrong..
Seem likt menu.findItem(R.id.search) can't find my searchview although it's there as you can see in my xml file..
You can't insert SearchView into menu like this. Try this in your menu.xml:
<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=".MainActivity">
<item
android:id="#+id/action_search"
android:orderInCategory="100"
android:title="Search"
android:icon="#drawable/ic_menu_search"
app:showAsAction="ifRoom|collapseActionView"
app:actionViewClass="android.support.v7.widget.SearchView"/>
</menu>
I am trying to implement a search functionality in my application.
I am trying to display search icon in toolbar, but instead of single search icon multiple icons are getting displayed. One icon is getting displayed from menu.xml file and other icon is getting displayed from the line setHasOptionsMenu(true);.
If I do not use "setHasOptionsMenu(true)" line then onOptionsItemSelectedMenu method will not get called, if I do not give search icon in menu.xml file then search icon will not get displayed. Please let me know how to come out of the issue. I am trying hard with no fruits. Please help me come out of this issue.
My current toolbar looks as shown in the image below:
My menu.xml file:
<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="com.blo.ifo.ifocusblogs.ActivityForFragments">
<item
android:id="#+id/action_settings"
android:orderInCategory="100"
android:title="#string/action_settings"
app:showAsAction="never" />
<item android:id="#+id/search"
android:title="#string/search_label"
android:icon="#mipmap/ic_menu_search"
app:showAsAction="collapseActionView|ifRoom"
app:actionViewClass="android.support.v7.widget.SearchView" />
</menu>
I had the same problem
my problem
and this was the solution that I've found:
add "menu.clear();" to "onPrepareOptionsMenu" in MainActivity
solution
#Override
public boolean onPrepareOptionsMenu(Menu menu) {
menu.clear();
getMenuInflater().inflate(R.menu.main,menu);
MenuItem itemSearch = menu.findItem(R.id.action_search);
mSearchView = (SearchView) itemSearch.getActionView();
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
mSearchView.setSearchableInfo( searchManager.getSearchableInfo(getComponentName()));
mSearchView.setQueryHint(getResources().getString(R.string.searchProduct));
mSearchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String s) {
return false;
}
#Override
public boolean onQueryTextChange(String newText) {
if (TextUtils.isEmpty(newText)){
adapter.getFilter().filter("");
listview.clearTextFilter();
}else {
adapter.getFilter().filter(newText.toString());
}
return true;
}
});
return true;
}
I am using appcompat v7 for searchview with toolbar except actionbar. below is my menu xml file and java file.
menu file:
<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" >
<item
android:id="#+id/action_search"
android:icon="#drawable/ic_action_search"
android:title="#string/search"
app:actionViewClass="android.support.v7.widget.SearchView"
app:showAsAction="always"/>
<item
android:id="#+id/action_sort"
android:icon="#drawable/ic_action_sort"
android:title="#string/sort"
app:showAsAction="ifRoom"/>
</menu>
java file:
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater menuInflater = getMenuInflater();
menuInflater.inflate(R.menu.dashboard, menu);
MenuItem searchItem = menu.findItem(R.id.action_search);
SearchManager searchManager = (SearchManager) MainActivity.this.getSystemService(Context.SEARCH_SERVICE);
if (searchItem != null) {
searchView = (SearchView) searchItem.getActionView();
}
if (searchView != null) {
searchView.setSearchableInfo(searchManager.getSearchableInfo(MainActivity.this.getComponentName()));
}
return super.onCreateOptionsMenu(menu);
}
now i want to collapse searchview if it is expanded otherwise want to work backpressed on backpressed() method. how can i achieve this.?
Collapsing on backpressed is handled by default in my own setup. I didn't implement a custom onBackPressed method. I did nothing special except extending from ActionBarActivity.
I used MenuItemCompat to get actionview, that might do the trick.
This is my menu 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="com.yourapp.youractivity">
<item
android:id="#+id/search"
android:title="#string/app_name"
android:icon="#drawable/nav_search"
app:showAsAction="ifRoom|collapseActionView"
app:actionViewClass="android.support.v7.widget.SearchView" />
</menu>
This is how i create the menu
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.shop_list, menu);
SearchManager searchManager =
(SearchManager)getSystemService(Context.SEARCH_SERVICE);
//Using MenuItemCompat here, that can do the trick
searchView =
(SearchView)MenuItemCompat.
getActionView(menu.findItem(R.id.search));
searchView.setSearchableInfo(
searchManager.getSearchableInfo(getComponentName()));
//etc...
//etc...
return true;
}
In onBackPressed call invalidateOptionsMenu() or store SearchView as Activity field and call searchView.onActionViewCollapsed(); but that can require additional work when restoring your Toolbar state (title state etc.).
Try this inside the Class and extend ActionBarActivity in your Class
(Example: - public class Home extends ActionBarActivity)
#Override
public void onBackPressed() {
super.onBackPressed()
}
For collapsing the SearchView: Try this,
menu.collapseActionView();
(or)
searchView = menuItem.getActionView().
(or)
searchView.onActionViewCollapsed()
I'm trying to implement SearchView according to some online tutorials. But when i clicked the search icon, it did not expand, instead another search icon appeared to the left and i must click again; this time it worked.
Are there something i'm missing here?
Here are the captured images, sorry i can't post these to stackoverflow yet.
http://1drv.ms/186yI2Y
If i delete collapseActionView then it worked, but i can't customize search icon.
<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=".MainActivity">
<item android:id="#+id/search"
android:title="#string/search_title"
android:icon="#drawable/ic_action_search"
app:showAsAction="collapseActionView|ifRoom"
app:actionViewClass="android.widget.SearchView"/>
</menu>
In MainActivity.java
#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);
// Associate searchable configuration with the SearchView
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
MenuItem searchItem = menu.findItem(R.id.search);
mSearchView = (SearchView) searchItem.getActionView();
mSearchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
mSearchView.setIconifiedByDefault(true);
mSearchView.setOnSearchClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
showResultsFragment();
}
});
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
boolean toggleHandled = mDrawerToggle.onOptionsItemSelected(item);
return toggleHandled || super.onOptionsItemSelected(item);
}
Thank in advance!
in your menu xml i changed app:actionViewClass="android.support.v7.widget.SearchView"
<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=".MainActivity">
<item android:id="#+id/search"
android:title="wrwrwr"
android:icon="#drawable/abc_ic_menu_copy_mtrl_am_alpha"
app:showAsAction="collapseActionView|ifRoom"
app:actionViewClass="android.support.v7.widget.SearchView"/>
</menu>
and in your activity
import android.support.v7.widget.SearchView; //don't import android.widget.SearchView