问题
I am using a SearchView in the Action Bar. I want to use autocomplete feature on the search view to get results from the database.
Is this possible? Or do I need to use a custom text box and then add autocomplete to that?
回答1:
I have use custom AutoCompleteTextView and add it in ActionBar.
public class MainActivity extends Activity {
private static final String[] COUNTRIES = new String[] { "Belgium",
"France", "France_", "Italy", "Germany", "Spain" };
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ActionBar actionBar = getActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setDisplayShowCustomEnabled(true);
// actionBar.setDisplayShowTitleEnabled(false);
// actionBar.setIcon(R.drawable.ic_action_search);
LayoutInflater inflator = (LayoutInflater) this
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = inflator.inflate(R.layout.actionbar, null);
actionBar.setCustomView(v);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_dropdown_item_1line, COUNTRIES);
AutoCompleteTextView textView = (AutoCompleteTextView) v
.findViewById(R.id.editText1);
textView.setAdapter(adapter);
}
}
and Your Layout:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Action Bar:"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#FFFFFF" />
<AutoCompleteTextView
android:id="@+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:imeOptions="actionSearch"
android:inputType="textAutoComplete|textAutoCorrect"
android:textColor="#FFFFFF" >
<requestFocus />
</AutoCompleteTextView>
</LinearLayout>
Edited:
Please check this and this link it may help you. code is here.
回答2:
So I just had to do this for the v7 version and was dismayed to find that I cannot simply set the adapter with an ArrayAdapter.
I did not want to use a stock AutoCompleteTextView (as the top commenter here does), because then you're missing out on a number of snazzy features of SearchView, like the little search icon and x button.
So I extended SearchView and got this:
public class ArrayAdapterSearchView extends SearchView {
private SearchView.SearchAutoComplete mSearchAutoComplete;
public ArrayAdapterSearchView(Context context) {
super(context);
initialize();
}
public ArrayAdapterSearchView(Context context, AttributeSet attrs) {
super(context, attrs);
initialize();
}
public void initialize() {
mSearchAutoComplete = (SearchAutoComplete) findViewById(android.support.v7.appcompat.R.id.search_src_text);
this.setAdapter(null);
this.setOnItemClickListener(null);
}
@Override
public void setSuggestionsAdapter(CursorAdapter adapter) {
// don't let anyone touch this
}
public void setOnItemClickListener(OnItemClickListener listener) {
mSearchAutoComplete.setOnItemClickListener(listener);
}
public void setAdapter(ArrayAdapter<?> adapter) {
mSearchAutoComplete.setAdapter(adapter);
}
public void setText(String text) {
mSearchAutoComplete.setText(text);
}
}
You can use this in your menu xml for the ActionBar like so:
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto" >
<item
android:id="@+id/action_search"
android:icon="@android:drawable/ic_menu_add"
android:title="TITLE"
app:actionViewClass="com.yourpackage.ArrayAdapterSearchView"
app:showAsAction="ifRoom|collapseActionView"/>
</menu>
You may also want to add click functionality to the autocomplete list (for example, setting the text to the EditText):
MenuItem searchItem = menu.findItem(R.id.action_search);
final ArrayAdapterSearchView searchView = (ArrayAdapterSearchView)searchItem.getActionView();
searchView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
searchView.setText(adapter.getItem(position).toString());
}
});
And here is a similar version for the regular old android.widget.SearchView:
public class ArrayAdapterSearchView extends SearchView {
private AutoCompleteTextView mSearchAutoComplete;
public ArrayAdapterSearchView(Context context) {
super(context);
initialize();
}
public ArrayAdapterSearchView(Context context, AttributeSet attrs) {
super(context, attrs);
initialize();
}
public void initialize() {
mSearchAutoComplete = (AutoCompleteTextView) findViewById(getResources().getIdentifier("android:id/search_src_text", null, null));
setAutoCompleSuggestionsAdapter(null);
setOnItemClickListener(null);
}
@Override
public void setSuggestionsAdapter(CursorAdapter adapter) {
throw new UnsupportedOperationException("Please use setAutoCompleSuggestionsAdapter(ArrayAdapter<?> adapter) instead");
}
public void setOnItemClickListener(AdapterView.OnItemClickListener listener) {
mSearchAutoComplete.setOnItemClickListener(listener);
}
public void setAutoCompleSuggestionsAdapter(ArrayAdapter<?> adapter) {
mSearchAutoComplete.setAdapter(adapter);
}
public void setText(String text) {
mSearchAutoComplete.setText(text);
}
}
回答3:
Here's an alternative method using CursorAdapter:
ExampleActivity.java
private Menu menu;
@Override
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.example, menu);
this.menu = menu;
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
SearchManager manager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
SearchView search = (SearchView) menu.findItem(R.id.search).getActionView();
search.setSearchableInfo(manager.getSearchableInfo(getComponentName()));
search.setOnQueryTextListener(new OnQueryTextListener() {
@Override
public boolean onQueryTextChange(String query) {
loadHistory(query);
return true;
}
});
}
return true;
}
// History
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
private void loadHistory(String query) {
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
Cursor cursor = db.rawQuery("SELECT * FROM items", null); // Example database query
SearchManager manager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
final SearchView search = (SearchView) menu.findItem(R.id.search).getActionView();
search.setSearchableInfo(manager.getSearchableInfo(getComponentName()));
search.setSuggestionsAdapter(new ExampleAdapter(this, cursor, items));
}
}
Now you need to create an adapter extended from CursorAdapter:
ExampleAdapter.java
public class ExampleAdapter extends CursorAdapter {
private List<String> items;
private TextView text;
public ExampleAdapter(Context context, Cursor cursor, List<String> items) {
super(context, cursor, false);
this.items = items;
}
@Override
public void bindView(View view, Context context, Cursor cursor) {
text.setText(cursor.getString(cursor.getColumnIndex("text"))); // Example column index
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.item, parent, false);
text = (TextView) view.findViewById(R.id.text);
return view;
}
}
Please note: when you import CursorAdapter don't import the Android support version, import the standard android.widget.CursorAdapter instead.
The adapter will also require a custom layout:
res/layout/item.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:id="@+id/item"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</RelativeLayout>
You can now customize list items by adding additional text or image views to the layout and populating them with data in the adapter. Now you need a SearchView menu item:
res/menu/example.xml
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="@+id/search"
android:title="@string/search"
android:showAsAction="ifRoom"
android:actionViewClass="android.widget.SearchView" />
</menu>
Then create a searchable configuration:
res/xml/searchable.xml
<searchable xmlns:android="http://schemas.android.com/apk/res/android"
android:label="@string/search"
android:hint="@string/search" >
</searchable>
Finally add this inside the relevant activity tag in the manifest file:
AndroidManifest.xml
<intent-filter>
<action android:name="android.intent.action.SEARCH" />
</intent-filter>
<meta-data
android:name="android.app.default_searchable"
android:value="com.example.ExampleActivity" />
<meta-data
android:name="android.app.searchable"
android:resource="@xml/searchable" />
Please note: The @string/search string used in the examples should be defined in values/strings.xml, also don't forget to update the reference to com.example for your project.
Here's the original tutorial for reference:
http://tpbapp.com/android-development/android-action-bar-searchview-tutorial
回答4:
Yes it is possible. Build a table (such as in an SQLiteDatabase) for your suggestions and format the table with required columns.
See this link
回答5:
I was also facing this issue for the auto complete search view and fix it without using any extra layout and auto complete text view, there is a class called SearchAutoComplete. I used this to achieve the auto complete feature, just put a simple list adapter which contain a ArrayList of items to suggest with search view. Set the adapter to your SearchAutoComplete and auto complete feature will work below is my code. Remember you don't have to add any custom layout. Just replace your onCreateOptionsMenu(...) method with mine code:
@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);
MenuItem searchItem = menu.findItem(R.id.search);
SearchView mSearchView = (SearchView) MenuItemCompat.getActionView(searchItem);
SearchAutoComplete searchAutoComplete = (SearchAutoComplete) mSearchView.findViewById(android.support.v7.appcompat.R.id.search_src_text);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_dropdown_item_1line, itemArrayList);
searchAutoComplete.setAdapter(adapter);
SearchManager searchManager =
(SearchManager) getSystemService(this.SEARCH_SERVICE);
mSearchView.setSearchableInfo(
searchManager.getSearchableInfo(getComponentName()));
return true;
}
Clicking the suggested item the item should appear on the search view so add the below code just after you set your adapter to searchAutoComplete inside the onCreateOptionmenu(...) method
searchAutoComplete.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
// TODO Auto-generated method stub
String searchString=(String)parent.getItemAtPosition(position);
searchAutoComplete.setText(""+searchString);
Toast.makeText(MainActivity.this, "you clicked "+searchString, Toast.LENGTH_LONG).show();
}
});
回答6:
You can do this with a CursorAdapter via something like:
MenuItem searchItem = menu.findItem(R.id.action_search);
SearchView searchView = (SearchView) MenuItemCompat.getActionView(searchItem);
searchView.setSuggestionsAdapter(adapter);
回答7:
SearchAutoComplete searchAutoComplete = mSearchView.findViewById(androidx.appcompat.R.id.search_src_text);
for androidx version
来源：https://stackoverflow.com/questions/15804805/android-action-bar-searchview-as-autocomplete