我在Action Bar中使用SearchView。我想在搜索视图上使用自动完成功能来从数据库中获取结果。
这可能吗?或者我是否需要使用自定义文本框,然后为其添加自动完成功能?
答案 0 :(得分:38)
所以我只需要为v7版本执行此操作,并且发现我不能简单地使用ArrayAdapter设置适配器时感到沮丧。
我不想使用股票AutoCompleteTextView(作为这里的顶级评论者),因为那时你错过了SearchView的一些时髦功能,比如小搜索图标和x按钮。
所以我扩展了SearchView并获得了这个:
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);
}
}
您可以在菜单xml中为ActionBar使用它,如下所示:
<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>
您可能还想将点击功能添加到自动填充列表中(例如,将文本设置为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());
}
});
这是常规旧版android.widget.SearchView的类似版本:
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);
}
}
答案 1 :(得分:33)
我使用自定义AutoCompleteTextView并将其添加到ActionBar中。
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);
}
}
和您的布局:
<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>
编辑:
请检查this以及link这可能对您有帮助。 code is here.
答案 2 :(得分:7)
以下是使用CursorAdapter
的替代方法:
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));
}
}
现在您需要创建一个从CursorAdapter
扩展的适配器:
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;
}
}
请注意:导入CursorAdapter
时,请不要导入Android支持版本,而是导入标准版android.widget.CursorAdapter
。
适配器还需要自定义布局:
RES /布局/ 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>
现在,您可以通过向布局添加其他文本或图像视图并使用适配器中的数据填充列表项来自定义列表项。现在您需要一个SearchView菜单项:
RES /菜单/的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>
然后创建一个可搜索的配置:
RES / XML / searchable.xml
<searchable xmlns:android="http://schemas.android.com/apk/res/android"
android:label="@string/search"
android:hint="@string/search" >
</searchable>
最后将其添加到清单文件中的相关活动标记内:
的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" />
请注意:示例中使用的@string/search
字符串应在 values / strings.xml 中定义,也不要忘记更新对{{1}的引用为您的项目。
这是原始教程供参考:
http://tpbapp.com/android-development/android-action-bar-searchview-tutorial
答案 3 :(得分:6)
是的,这是可能的。为您的建议构建一个表(例如在SQLiteDatabase中),并使用必需的列格式化表。
答案 4 :(得分:5)
我还面临自动完成搜索视图的这个问题并修复它而不使用任何额外的布局和自动完成文本视图,有一个名为 SearchAutoComplete 的类。我用它来实现自动完成功能,只需放一个简单的列表适配器,其中包含一个ArrayList的项目,用于建议搜索视图。将适配器设置为 SearchAutoComplete ,自动完成功能将在我的代码下面工作。请记住,您不必添加任何自定义布局。只需用我的代码替换你的onCreateOptionsMenu(...)方法:
@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;
}
单击建议的项目,该项目应出现在搜索视图中,因此在将适配器设置为onCreateOptionmenu(...)方法内的searchAutoComplete后立即添加以下代码
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();
}
});
答案 5 :(得分:1)
您可以通过以下内容使用CursorAdapter执行此操作:
MenuItem searchItem = menu.findItem(R.id.action_search);
SearchView searchView = (SearchView) MenuItemCompat.getActionView(searchItem);
searchView.setSuggestionsAdapter(adapter);
答案 6 :(得分:0)
SearchAutoComplete searchAutoComplete = mSearchView.findViewById(androidx.appcompat.R.id.search_src_text);
对于androidx版本