一个月前，我将 ActionBarSherlock 4.2 加入了我的项目。除了我的SearchView. 我创建搜索建议的方式是使用Android 文档中的方法。
ActionBarSherlock 是否支持搜索建议？我试图通过Github 页面上的问题列表进行挖掘，但问题似乎已关闭，但我似乎无法关注讨论并了解它是否真的已解决。我想你们中的一些一直在使用 ActionBarSherlock 的人可能更了解。
问问题
2282 次
3 回答
12
它没有。但我找到了一种让它查询您的 ContentProvider 的方法。我从执行查询的 API 17 中查看了 SuggestionsAdapter 的来源，并想出了替换此方法的想法。我还发现 ActionbarSherlock 的 SuggestionsAdapter 不使用您的 SearchableInfo。
在 ActionBarSherlock 项目中编辑 com.actionbarsherlock.widget.SuggestionsAdapter：
添加一行
private SearchableInfo searchable;
在构造函数中，添加
this.searchable = mSearchable;
用这个替换 getSuggestions 方法：
public Cursor getSuggestions(String query, int limit) {
if (searchable == null) {
return null;
}
String authority = searchable.getSuggestAuthority();
if (authority == null) {
return null;
}
Uri.Builder uriBuilder = new Uri.Builder()
.scheme(ContentResolver.SCHEME_CONTENT)
.authority(authority)
.query("") // TODO: Remove, workaround for a bug in Uri.writeToParcel()
.fragment(""); // TODO: Remove, workaround for a bug in Uri.writeToParcel()
// if content path provided, insert it now
final String contentPath = searchable.getSuggestPath();
if (contentPath != null) {
uriBuilder.appendEncodedPath(contentPath);
}
// append standard suggestion query path
uriBuilder.appendPath(SearchManager.SUGGEST_URI_PATH_QUERY);
// get the query selection, may be null
String selection = searchable.getSuggestSelection();
// inject query, either as selection args or inline
String[] selArgs = null;
if (selection != null) { // use selection if provided
selArgs = new String[] { query };
} else { // no selection, use REST pattern
uriBuilder.appendPath(query);
}
if (limit > 0) {
uriBuilder.appendQueryParameter("limit", String.valueOf(limit));
}
Uri uri = uriBuilder.build();
// finally, make the query
return mContext.getContentResolver().query(uri, null, selection, selArgs, null);
}
现在它查询我的 ContentProvider 但由于默认适配器崩溃，说没有 layout_height 从支持库加载一些 xml 文件。所以你必须使用自定义的 SuggestionsAdapter。这对我有用：
import com.actionbarsherlock.widget.SearchView;
import android.app.SearchManager;
import android.app.SearchableInfo;
import android.content.ContentResolver;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.support.v4.widget.CursorAdapter;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
public final class DrugsSearchAdapter extends CursorAdapter
{
private static final int QUERY_LIMIT = 50;
private LayoutInflater inflater;
private SearchView searchView;
private SearchableInfo searchable;
public DrugsSearchAdapter(Context context, SearchableInfo info, SearchView searchView)
{
super(context, null, CursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER);
this.searchable = info;
this.searchView = searchView;
this.inflater = LayoutInflater.from(context);
}
@Override
public void bindView(View v, Context context, Cursor c)
{
String name = c.getString(c.getColumnIndex(SearchManager.SUGGEST_COLUMN_TEXT_1));
TextView namet = (TextView) v.findViewById(R.id.list_item_drug_name);
namet.setText(name);
String man = c.getString(c.getColumnIndex(SearchManager.SUGGEST_COLUMN_TEXT_2));
TextView manuf = (TextView) v.findViewById(R.id.list_item_drug_manufacturer);
manuf.setText(man);
}
@Override
public View newView(Context arg0, Cursor arg1, ViewGroup arg2)
{
return this.inflater.inflate(R.layout.list_item_drug_search, null);
}
/**
* Use the search suggestions provider to obtain a live cursor. This will be called
* in a worker thread, so it's OK if the query is slow (e.g. round trip for suggestions).
* The results will be processed in the UI thread and changeCursor() will be called.
*/
@Override
public Cursor runQueryOnBackgroundThread(CharSequence constraint) {
String query = (constraint == null) ? "" : constraint.toString();
/**
* for in app search we show the progress spinner until the cursor is returned with
* the results.
*/
Cursor cursor = null;
if (searchView.getVisibility() != View.VISIBLE
|| searchView.getWindowVisibility() != View.VISIBLE) {
return null;
}
try {
cursor = getSuggestions(searchable, query, QUERY_LIMIT);
// trigger fill window so the spinner stays up until the results are copied over and
// closer to being ready
if (cursor != null) {
cursor.getCount();
return cursor;
}
} catch (RuntimeException e) {
}
// If cursor is null or an exception was thrown, stop the spinner and return null.
// changeCursor doesn't get called if cursor is null
return null;
}
public Cursor getSuggestions(SearchableInfo searchable, String query, int limit) {
if (searchable == null) {
return null;
}
String authority = searchable.getSuggestAuthority();
if (authority == null) {
return null;
}
Uri.Builder uriBuilder = new Uri.Builder()
.scheme(ContentResolver.SCHEME_CONTENT)
.authority(authority)
.query("")
.fragment("");
// if content path provided, insert it now
final String contentPath = searchable.getSuggestPath();
if (contentPath != null) {
uriBuilder.appendEncodedPath(contentPath);
}
// append standard suggestion query path
uriBuilder.appendPath(SearchManager.SUGGEST_URI_PATH_QUERY);
// get the query selection, may be null
String selection = searchable.getSuggestSelection();
// inject query, either as selection args or inline
String[] selArgs = null;
if (selection != null) { // use selection if provided
selArgs = new String[] { query };
} else { // no selection, use REST pattern
uriBuilder.appendPath(query);
}
if (limit > 0) {
uriBuilder.appendQueryParameter("limit", String.valueOf(limit));
}
Uri uri = uriBuilder.build();
// finally, make the query
return mContext.getContentResolver().query(uri, null, selection, selArgs, null);
}
}
并在 SearchView 中设置这个适配器
searchView.setSuggestionsAdapter(new DrugsSearchAdapter(this, searchManager.getSearchableInfo(getComponentName()), searchView));
于 2013-01-10T14:46:49.333 回答
0
我不知道我在这里是错的还是我意外更改了某些内容，但是上面的答案不起作用并且 ActionBarSherlock SuggestionsAdapter 不起作用。我得到的只是runQueryOnBackgroundThread 中的空指针。它也从不进入 bindView 等，但它设法显示建议结果。我认为 android.app.SearchManager 以某种方式用 getSuggestions() 覆盖了 ABS，但我不确定。我还在尝试一些事情...
于 2013-07-18T14:38:46.030 回答