I have a MainActivity which contains a searchView int he action bar. The text in the searchView query is passed into an intent, this intent then starts my SearchableActivity. In SearchableActivity I receive the intent with the query string as well.
Now I have some mock data in my fetchResult method, I then bind this data to the ListView so it can be displayed in the ListView.
Obviously I want this mock data to be displayed in the ListView but instead I get a blank screen with "No data" displayed.
MainActivity.java
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_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.menu_main, menu);
MenuItem searchItem = menu.findItem(R.id.action_search);
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
SearchView searchView = (SearchView) MenuItemCompat.getActionView(searchItem);
if(null != searchView) {
searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
searchView.setIconifiedByDefault(false);
}
SearchView.OnQueryTextListener queryTextListener = new SearchView.OnQueryTextListener() {
public boolean onQueryTextChange(String newText) {
return true;
}
public boolean onQueryTextSubmit(String query) {
Intent intent = new Intent(MainActivity.this, SearchableActivity.class);
intent.putExtra(Intent.ACTION_SEARCH, query);
startActivity(intent);
return true;
}
};
if (searchView != null) {
searchView.setOnQueryTextListener(queryTextListener);
}
return super.onCreateOptionsMenu(menu);
}
@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();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
SearchableActivity.java
private List<String> arrayList;
private ArrayAdapter<String> mArrayAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_searchable);
Intent intent = getIntent();
if(Intent.ACTION_SEARCH.equals(intent.getAction())) {
String query = intent.getStringExtra(SearchManager.QUERY);
setListAdapter(fetchResults(query));
}
}
private ArrayAdapter<String> fetchResults(String query) {
String [] data = {"String", "String", "String", "String", "String", "String", "String",
"String"};
arrayList = new ArrayList<>(Arrays.asList(data));
mArrayAdapter = new ArrayAdapter<>(this, R.layout.list_item_artist,
R.id.list_item_artist_textview, arrayList);
return mArrayAdapter;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_searchable, menu);
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();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
activity_searchable.xml
<LinearLayout>
<ListView
android:id="@android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:drawSelectorOnTop="false">
</ListView>
<TextView
android:id="@android:id/empty"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="No data"/>
</LinearLayout>
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.android.spotifystreamer" >
<application
android:allowBackup="true"
android:icon="@mipmap/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>
</activity>
<activity
android:name=".SearchableActivity">
<intent-filter>
<action android:name="android.intent.action.SEARCH" />
</intent-filter>
<meta-data
android:name="android.app.searchable"
android:resource="@xml/searchable" />
</activity>
</application>
</manifest>
I can`t see the part where you add the adapter to the listview.
listview.setAdapter(fetchResults(query));
In your SearchableActivity.java , you are comparing Intent Action. But in MainActivity.java , you have put Intent Extra Intent.ACTION_SEARCH .
Try using -
intent.setAction(Intent.ACTION_SEARCH); // OR
intent.setAction(query); // if "query" is the string variable that represents intent action.
instead of -
intent.putExtra(Intent.ACTION_SEARCH, query);
I hope this will help you.
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