While using number of items like eCommerce product, library, news in such cases we use search box for finding exact item.
for this we use below steps,
step 1) create android studio empty project, go to res-->layout-->main.xml and add below code,
<ListView
android:id="@+id/lv1"
android:layout_width="376dp"
android:layout_height="664dp"
android:layout_marginStart="16dp"
android:layout_marginTop="64dp"
android:divider="#ad5"
android:dividerHeight="2dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
in the same folder create menu folder(from right button click on res folder-->resource directory and select menu),
step 2) then add below code in menu.xml file.
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="@+id/app_bar_search"
android:icon="@android:drawable/ic_menu_search"
android:title="Search"
app:showAsAction="ifRoom|withText"
app:actionViewClass="android.widget.SearchView">
</item>
</menu>
step 3) finally go to mainactivity.java , and use below code.
ListView listView;
ArrayList<String> list;
ArrayAdapter<String> adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = findViewById(R.id.lv1);
list = new ArrayList<>();
list.add("Website");
list.add("Software");
list.add("Mobile app");
list.add("php development");
list.add("java development");
list.add("Net development");
list.add("mysql development");
list.add("Html, css");
adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, list);
listView.setAdapter(adapter);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu, menu);
MenuItem searchViewItem = menu.findItem(R.id.app_bar_search);
final SearchView searchView = (SearchView) MenuItemCompat.getActionView(searchViewItem);
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String query) {
searchView.clearFocus();
return false;
}
@Override
public boolean onQueryTextChange(String newText) {
adapter.getFilter().filter(newText);
return false;
}
});
return super.onCreateOptionsMenu(menu);
}
step 4) now it's time to test on emulator(from menu -->run-->click on run) or real android phone.
output is like this, on top action bar click on search icon and type specific item from list.you will see how is works.
