Getting null after migrating android X androidx.appcompat.widget.SearchView

Question

I have added android X in xml

 public boolean onCreateOptionsMenu(final Menu menu) {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.notebook_menu, menu);
    MenuItem searchMenuItem = menu.findItem(R.id.notebook_search);      
    SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
    searchView = (SearchView) searchMenuItem.getActionView();
    searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
    searchView.setIconifiedByDefault(false);    
    }

From menu

  <menu xmlns:android="http://schemas.android.com/apk/res/android" >
        <item
        android:id="@+id/notebook_search"
        app:actionViewClass="androidx.appcompat.widget.SearchView"
        android:icon="@drawable/tab_notebook_search"
        app:showAsAction="always|collapseActionView"
        android:title="@string/search"/>
        </menu>

Error

java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.SearchView.setSearchableInfo(android.app.SearchableInfo)' on a null object reference

Please provide a [mcve]. Be sure to show the full error message. Check out https://stackoverflow.com/questions/23353173/unfortunately-myapp-has-stopped-how-can-i-solve-this for some tips. — Code-Apprentice, Oct 16 '19 at 15:37
menu.xml file android:actionViewClass="androidx.appcompat.widget.SearchView" Java class searchView = (SearchView) searchMenuItem.getActionView();//getting null here Error java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.SearchView.setSearchableInfo(android.app.SearchableInfo)' on a null object reference — Kalpana Sahu, Oct 16 '19 at 15:46

Md. Asaduzzaman · Answer 1 · 2019-10-16T17:31:16.847

2

Use app:actionViewClass instead of android:actionViewClass in your menu layout. That's the problem. Change like below:

<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/notebook_search"
        app:actionViewClass="androidx.appcompat.widget.SearchView"
        android:icon="@drawable/tab_notebook_search"
        app:showAsAction="always|collapseActionView"
        android:title="@string/search"/>
</menu>

Beside this probably your refactor not correctly done. Please Try Refactor > Migrate to AndroidX and press DoRefactor

edited Oct 16 '19 at 17:31

answered Oct 16 '19 at 15:56

Md. Asaduzzaman

14,963
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46

I have added both but still i am getting null pointer exception import androidx.appcompat.widget.SearchView; android:actionViewClass="androidx.appcompat.widget.SearchView" – Kalpana Sahu Oct 16 '19 at 16:25
Still facing problem? please post your **onCreateOptionMenu** code and menu layout – Md. Asaduzzaman Oct 16 '19 at 16:27
I have added full detail.Please check and let me know if have any solution.Thanks – Kalpana Sahu Oct 16 '19 at 16:58
use `app:actionViewClass` – Md. Asaduzzaman Oct 16 '19 at 17:06
And to use AndroidX you should follow the proper refactor method. Please do that: Try **Refactor > Migrate to AndroidX** and press DoRefactor – Md. Asaduzzaman Oct 16 '19 at 17:09
I have added app:actionViewClass this you can see in xml file.I had done refactor using android studio.It is not working. – Kalpana Sahu Oct 17 '19 at 07:13
Your xml contains **android** tag not **app** – Md. Asaduzzaman Oct 17 '19 at 07:14
Both **showAsAction** and **actionViewClass** should use `app` – Md. Asaduzzaman Oct 17 '19 at 07:16
I have added app also, still it is crashing. – Kalpana Sahu Oct 17 '19 at 07:17
@KalpanaSahu, Please copy-paste my code and try. Still your xml code is wrong – Md. Asaduzzaman Oct 17 '19 at 07:18
I have tried this in my own and found problem with **android** tag which is easily producible. I don't know what's going on in your side – Md. Asaduzzaman Oct 17 '19 at 07:20
Okay let me try this. – Kalpana Sahu Oct 17 '19 at 07:42
Then I am really sorry to say that I can't help you. – Md. Asaduzzaman Oct 17 '19 at 08:05
Found solution.Thanks. – Kalpana Sahu Oct 17 '19 at 10:47
What's the solution? – Md. Asaduzzaman Oct 17 '19 at 10:56
I have extend with appcombatactivity instead of fragmentActivity ,changed theme and xml. Then it is working fine.Thanks – Kalpana Sahu Oct 23 '19 at 11:29

Getting null after migrating android X androidx.appcompat.widget.SearchView

1 Answers1