About SearchView

SearchView is Android's native search box control, which provides a user interface for user search queries.  
By default, SearchView displays a search icon. Click icon to expand the search box. If you want the search box to expand by default, you can use seticonfifiedbydefault (false); to achieve this.

SearchView property

SearchView using

• To define SearchView in 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:layout_margin="15dp"
    android:orientation="vertical"
    tools:context="com.airsaid.searchviewdemo.MainActivity">

    <SearchView
        android:id="@+id/searchView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:iconifiedByDefault="false"
        android:queryHint="Please enter the search content" />

    <ListView
        android:id="@+id/listView"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1" />
</LinearLayout>

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• Main code:

public class MainActivity extends AppCompatActivity {

    private String[] mStrs = {"aaa", "bbb", "ccc", "airsaid"};
    private SearchView mSearchView;
    private ListView mListView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mSearchView = (SearchView) findViewById(R.id.searchView);
        mListView = (ListView) findViewById(R.id.listView);
        mListView.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, mStrs));
        mListView.setTextFilterEnabled(true);

        // Set search text listening
        mSearchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            // This method is triggered when the search button is clicked
            @Override
            public boolean onQueryTextSubmit(String query) {
                return false;
            }

            // Trigger this method when search content changes
            @Override
            public boolean onQueryTextChange(String newText) {
                if (!TextUtils.isEmpty(newText)){
                    mListView.setFilterText(newText);
                }else{
                    mListView.clearTextFilter();
                }
                return false;
            }
        });

    }
}

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• Effect screenshot:

Demo download: http://download.csdn.net/detail/airsaid/9483985