我通过密切关注搜索界面的官方教程实现了搜索界面（搜索小部件）。一切看起来都不错，但我无法提交搜索查询。当我单击键盘上的“发送”按钮时，没有任何反应。
这是我所做的：
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="18" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.cheatdatabase.ItemListActivity"
android:label="@string/app_name" >
</activity>
<activity
android:name="com.cheatdatabase.ItemDetailActivity"
android:label="@string/title_item_detail"
android:parentActivityName=".ItemListActivity" >
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value=".ItemListActivity" />
</activity>
<activity
android:name="com.cheatdatabase.MainActivity"
android:label="@string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<meta-data
android:name="android.app.searchable"
android:resource="@xml/searchable" />
</activity>
<activity
android:name=".SearchResultsActivity"
android:label="@string/title_activity_search_result" >
<intent-filter>
<action android:name="android.intent.action.SEARCH" />
</intent-filter>
</activity>
</application>
res/xml/searchable.xml
<?xml version="1.0" encoding="utf-8"?>
<searchable xmlns:android="http://schemas.android.com/apk/res/android"
android:hint="@string/search_game"
android:label="@string/app_name" >
res/menu/options_menu.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:id="@+id/search"
android:actionViewClass="android.widget.SearchView"
android:icon="@android:drawable/ic_menu_search"
android:showAsAction="collapseActionView|ifRoom"
android:title="@string/search_game"/>
MainActivity.java
public class MainActivity extends FragmentActivity implements ActionBar.OnNavigationListener {
/**
* The serialization (saved instance state) Bundle key representing the
* current dropdown position.
*/
private static final String STATE_SELECTED_NAVIGATION_ITEM = "selected_navigation_item";
// more efficient than HashMap for mapping integers to objects
SparseArray<Group> groups = new SparseArray<Group>();
private ExpandableListView listView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Set up the action bar to show a dropdown list.
final ActionBar actionBar = getActionBar();
actionBar.setDisplayShowTitleEnabled(false);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
// Set up the dropdown list navigation in the action bar.
String[] allSystems = Tools.getGameSystemsFromXml(this);
// Specify a SpinnerAdapter to populate the dropdown list.
actionBar.setListNavigationCallbacks(new ArrayAdapter<String>(getActionBarThemedContextCompat(), android.R.layout.simple_list_item_1, android.R.id.text1, allSystems), this);
listView = (ExpandableListView) findViewById(R.id.listView);
SearchresultExpandableListAdapter adapter = new SearchresultExpandableListAdapter(this, groups);
listView.setAdapter(adapter);
createData();
for (int i = 0; i < groups.size(); i++) {
listView.expandGroup(i, false);
}
}
public void createData() {
for (int j = 0; j < 5; j++) {
Group group = new Group("Test " + j);
for (int i = 0; i < 5; i++) {
group.children.add("Sub Item" + i);
}
groups.append(j, group);
}
}
/**
* Backward-compatible version of {@link ActionBar#getThemedContext()} that
* simply returns the {@link android.app.Activity} if
* <code>getThemedContext</code> is unavailable.
*/
@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
private Context getActionBarThemedContextCompat() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
return getActionBar().getThemedContext();
} else {
return this;
}
}
@Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
// Restore the previously serialized current dropdown position.
if (savedInstanceState.containsKey(STATE_SELECTED_NAVIGATION_ITEM)) {
getActionBar().setSelectedNavigationItem(savedInstanceState.getInt(STATE_SELECTED_NAVIGATION_ITEM));
}
}
@Override
public void onSaveInstanceState(Bundle outState) {
// Serialize the current dropdown position.
outState.putInt(STATE_SELECTED_NAVIGATION_ITEM, getActionBar().getSelectedNavigationIndex());
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
// Search
getMenuInflater().inflate(R.menu.options_menu, menu);
// Associate searchable configuration with the SearchView
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
SearchView searchView = (SearchView) menu.findItem(R.id.search).getActionView();
searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
return true;
}
@Override
public boolean onNavigationItemSelected(int position, long id) {
// When the given dropdown item is selected, show its contents in the
// container view.
Fragment fragment = new DummySectionFragment();
Bundle args = new Bundle();
args.putInt(DummySectionFragment.ARG_SECTION_NUMBER, position + 1);
fragment.setArguments(args);
getSupportFragmentManager().beginTransaction().replace(R.id.container, fragment).commit();
return true;
}
/**
* A dummy fragment representing a section of the app, but that simply
* displays dummy text.
*/
public static class DummySectionFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
public static final String ARG_SECTION_NUMBER = "section_number";
public DummySectionFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main_dummy, container, false);
TextView dummyTextView = (TextView) rootView.findViewById(R.id.section_label);
dummyTextView.setText(Integer.toString(getArguments().getInt(ARG_SECTION_NUMBER)));
return rootView;
}
}
}
SearchResultsActivity.java
public class SearchResultsActivity extends Activity {
// more efficient than HashMap for mapping integers to objects
SparseArray<Group> groups = new SparseArray<Group>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_search_result);
handleIntent(getIntent());
}
@Override
protected void onNewIntent(Intent intent) {
setIntent(intent);
handleIntent(intent);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.search_result, menu);
return true;
}
private void handleIntent(Intent intent) {
if (Intent.ACTION_SEARCH.equals(intent.getAction())) {
String query = intent.getStringExtra(SearchManager.QUERY);
// use the query to search your data somehow
createData();
ExpandableListView listView = (ExpandableListView) findViewById(R.id.listView);
SearchresultExpandableListAdapter adapter = new SearchresultExpandableListAdapter(this, groups);
listView.setAdapter(adapter);
for (int i = 0; i < groups.size(); i++) {
listView.expandGroup(i, false);
}
}
}
public void createData() {
for (int j = 0; j < 5; j++) {
Group group = new Group("Test " + j);
for (int i = 0; i < 5; i++) {
group.children.add("Sub Item" + i);
}
groups.append(j, group);
}
}
}
到目前为止，我已经多次浏览了代码。我只是没有看到错误。我究竟做错了什么？
谢谢你的帮助。