“Failed to find provider info ” when Adding Recent Query Suggestions

Hi, I am trying to implement recent Query Suggestions into my app, but got stuck in a “Failed to find provider info ” error
please give some help

code as below:

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//searchable.xml

<searchable xmlns:android="http://schemas.android.com/apk/res/android"
android:searchSuggestAuthority = "testing.advancedsearch.mysuggestionprovider"
android:searchSuggestSelection=" ?"
>
</searchable>

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// content provider class

package testing.advancedsearch;

import android.content.SearchRecentSuggestionsProvider;

public class MySuggestionProvider extends SearchRecentSuggestionsProvider {
public final static String AUTHORITY = "testing.advancedsearch.mysuggestionprovider";
public final static int MODE = DATABASE_MODE_QUERIES;

public MySuggestionProvider() {
setupSuggestions(AUTHORITY, MODE);
}
}

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// manifest.xml

<provider android:name=".MySuggestionProvider"
android:authorities="testing.advancedsearch.mysuggestionprovider" />

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— modified on Jan 19, 2011, 4:14:54 PM