我正在尝试让搜索视图在用户开始输入时显示先前输入的搜索记录。
我已经按照http://developer.android.com/guide/topics/search/adding-recent-query-suggestions.html中的所有说明进行操作,并查看了其他各种地方,但似乎无法使其正常工作。
我在我的应用程序中使用搜索视图来为一个片段提供服务,允许用户查找特定站点的公交车时间表。代码如下。
transit.xml
<?xml version="1.0" encoding="utf-8"?>
<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:title="Search"
android:icon="@android:drawable/ic_menu_search"
app:showAsAction="always"
app:actionViewClass="android.support.v7.widget.SearchView"
android:searchSuggestAuthority="com.teamzeta.sfu.utilities.BusSuggestionProvider"
android:searchSuggestSelection=" ?"/>
</menu>
BusSuggestionProvider
package com.teamzeta.sfu.utilities;
import android.content.SearchRecentSuggestionsProvider;
public class BusSuggestionProvider extends SearchRecentSuggestionsProvider{
public final static String AUTHORITY = "com.teamzeta.sfu.utilities.BusSuggestionProvider";
public final static int MODE = DATABASE_MODE_QUERIES;
public BusSuggestionProvider() {
setupSuggestions(AUTHORITY, MODE);
}
}
searchable.xml
<?xml version="1.0" encoding="utf-8"?>
<searchable xmlns:android="http://schemas.android.com/apk/res/android"
android:label="@string/app_name"
android:hint="@string/stop_number"
android:searchSuggestAuthority="com.teamzeta.sfu.utilities.BusSuggestionProvider"
android:searchSuggestSelection=" ?">
</searchable>
NextBusFragment onCreateOptionsMenu
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.transit, menu);
MenuItem searchViewItem = menu.findItem(R.id.action_search);
SearchView searchView = (SearchView) searchViewItem.getActionView();
searchView.setIconifiedByDefault(false);
searchView.setInputType(InputType.TYPE_CLASS_NUMBER);
searchView.setQueryHint(getResources().getString(R.string.stop_number));
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String s) {
search(s);
SearchRecentSuggestions suggestions = new SearchRecentSuggestions(getActivity(), BusSuggestionProvider.AUTHORITY, BusSuggestionProvider.MODE);
suggestions.saveRecentQuery(s, null);
return false;
}
@Override
public boolean onQueryTextChange(String s) {
return false;
}
});
}
清单提供者
<provider android:name="com.teamzeta.sfu.utilities.BusSuggestionProvider"
android:authorities="com.teamzeta.sfu.utilities.BusSuggestionProvider" />
<meta-data android:name="android.app.searchable"
android:resource="@xml/searchable"/>
search()
方法将从API检索公交车列表,然后在列表视图中显示。请问有人能想出为什么这不显示历史记录吗?非常感谢!
onQueryTextSubmit
中进行了调试吗?s' 的值是否正确? - MysticMagicϡ