Null pointer in SearchView AppCompatActivity?
I am just a beginner and I searched for this question, found 4-5 questions here but it didn't work for me. I am just trying to searchView in Actionbar, my Activity is AppCompatActivity, my code is below. I am using the toolbar in this exercise. and using this library . OncreatOptionMenu:
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu_main, menu);
SearchManager SManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
MenuItem searchMenuItem = menu.findItem(R.id.action_search);
SearchView searchViewAction = (SearchView) MenuItemCompat.getActionView(searchMenuItem);
searchViewAction.setSearchableInfo(SManager.getSearchableInfo(getComponentName()));
searchViewAction.setIconifiedByDefault(false);
return super.onCreateOptionsMenu(menu);
}
Xml:
<item android:id="@+id/action_search"
android:title="action_search"
MainActivity:showAsAction="ifRoom"
MainActivity:actionViewClass="android.support.v7.widget.SearchView" />
and logcat:
java.lang.NullPointerException
at algonation.com.spm.MainActivity.onCreateOptionsMenu(MainActivity.java:183)
at android.app.Activity.onCreatePanelMenu(Activity.java:2571)
at android.support.v4.app.FragmentActivity.onCreatePanelMenu(FragmentActivity.java:277)
at android.support.v7.internal.view.WindowCallbackWrapper.onCreatePanelMenu(WindowCallbackWrapper.java:84)
at android.support.v7.app.AppCompatDelegateImplBase$AppCompatWindowCallback.onCreatePanelMenu(AppCompatDelegateImplBase.java:251)
at android.support.v7.internal.view.WindowCallbackWrapper.onCreatePanelMenu(WindowCallbackWrapper.java:84)
at android.support.v7.internal.app.ToolbarActionBar.populateOptionsMenu(ToolbarActionBar.java:449)
at android.support.v7.internal.app.ToolbarActionBar$1.run(ToolbarActionBar.java:66)
at android.os.Handler.handleCallback(Handler.java:808)
at android.os.Handler.dispatchMessage(Handler.java:103)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:824)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:640)
at dalvik.system.NativeStart.main(Native Method)
If you need all the MainActivity code, please let me know .. Thank you so much.
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You are getting NullPointerException because below line is returning null.
SManager.getSearchableInfo (getComponentName ()
You need
1 - Declare an activity (which should perform a search) to accept the ACTION_SEARCH intent in the target-filter element .
2 - Specify the search configuration to be used in the metadata item .
Assuming you are searching in MainActivity (which is AppCompatActivity as you want), see below example :
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.my_main, menu);
MenuItem searchMenuItem = menu.findItem(R.id.action_search);
SearchView searchViewAction = (SearchView) MenuItemCompat
.getActionView(searchMenuItem);
// Get the SearchView and set the searchable configuration
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
SearchableInfo searchableInfo = searchManager
.getSearchableInfo(getComponentName());
searchViewAction.setSearchableInfo(searchableInfo);
searchViewAction.setIconifiedByDefault(false);
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);
}
}
AndroidManifest.xml
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.SEARCH" />
</intent-filter>
<meta-data
android:name="android.app.searchable"
android:resource="@xml/searchable" />
</activity>
</application>
menu / activity _main.xml
<item
android:id="@+id/action_search"
app:actionViewClass="android.support.v7.widget.SearchView"
app:showAsAction="ifRoom"
android:title="@string/action_search"/>
Res /xml/searchable.xml
<?xml version="1.0" encoding="utf-8"?>
<searchable xmlns:android="http://schemas.android.com/apk/res/android"
android:label="@string/app_label"
android:hint="@string/search_hint" >
</searchable>
Hope this solves your problem and see here for help .
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This thread is half old, but the answers didn't work for me. For me this changed the "app" to "appcompat".
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:appcompat="http://schemas.android.com/apk/res-auto"
<item
android:id="@+id/action_search"
android:title="@string/search_title"
appcompat:actionViewClass="android.support.v7.widget.SearchView"
appcompat:showAsAction="always"/>
</menu>
Excuse my english.
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