操作栏中的Android SearchView无法正常工作

Question

First of all sorry if im new to android and java and still want to implement something for my thesis regarding the app im creating, I just want it to have a search view in the action bar for a certain activity to search for the corresponding letters or words in the search for my custom listview... and I dont know what to put in the "doMySearch(String query)" to get the results.

SearchResultsActivity.java

  import android.app.ActionBar;
  import android.app.ListActivity;
  import android.app.SearchManager;
  import android.content.Intent;
  import android.os.Bundle;
  import android.widget.TextView;

  public class SearchResultsActivity extends ListActivity {

private TextView txtQuery;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_search_results);

    // get the action bar
    ActionBar actionBar = getActionBar();

    // Enabling Back navigation on Action Bar icon
    actionBar.setDisplayHomeAsUpEnabled(true);

    txtQuery = (TextView) findViewById(R.id.txtQuery);

    handleIntent(getIntent());
}

@Override
protected void onNewIntent(Intent intent) {
    setIntent(intent);
    handleIntent(intent);
}

/**
 * Handling intent data
 */
private void handleIntent(Intent intent) {
    if (Intent.ACTION_SEARCH.equals(intent.getAction())) {
        String query = intent.getStringExtra(SearchManager.QUERY);

        doMySearch(query);
        txtQuery.setText("Search Query: " + query);
    }
}

private void doMySearch(String query) {
    // TODO Auto-generated method stub
       ArrayAdapter<String> adapter =new ArrayAdapter<String>(this, R.layout.subject_list_layout, R.id.subject_course_title_row);
    return adapter;

}
}

Searchable.xml

     <?xml version="1.0" encoding="utf-8"?>
    <searchable xmlns:android="http://schemas.android.com/apk/res/android"
     android:hint="@string/search_hint"
     android:label="@string/app_name" />

Manifest.xml

        <!-- Sample Search -->
    <activity
        android:name="com.randomlyroaming.com.loaopencourseware.courses.BSIT"
        android:screenOrientation="portrait"
        android:windowSoftInputMode="stateHidden" >
        <meta-data
            android:name="android.app.default_searchable"
            android:value=".SearchResultsActivity" />
    </activity>

    <!-- Search results activity -->
    <activity
        android:name=".SearchResultsActivity"
        android:label="@string/app_name"
        android:screenOrientation="portrait" >
        <intent-filter>
            <action android:name="android.intent.action.SEARCH" />
        </intent-filter>

        <meta-data
            android:name="android.app.searchable"
            android:resource="@xml/searchable" />
    </activity>

Please Help... It is already redirecting to "txtQuery.setText("Search Query: " + query);" but no results... Do I need to put something the method "doMySearch(query);" what code can I put it in there for it to work?..

Thank you and Your help is much Appreciated...

Answer 1

but no results... Do I need to put something the method "doMySearch(query);

Yes! it isn't supposed to show anything because you are just printing the query into a TextView .

If you want to access an SQLite Database, change a ListView 's adapter, or do something else, you would have to implement it in that method.

Going back to what you want, I think you are looking to filter the words in the ListView using the query, am I right? Anyway, Here you have a nice tutorial for that. Also, this post may help as you well.