许多人建议使用 LoaderManager 和 CursorLoader，而不是使用一些已弃用的 SimpleCursorAdapter 构造函数。所以当调用 getLoaderManager().initLoader() 它给了我这个错误：
LoaderManager 类型中的方法 initLoader(int, Bundle, LoaderManager.LoaderCallbacks) 不适用于参数 (int, null, SearchResultsActivity)
我曾尝试导入 loadermanager 和 cursorloader 的 v4 版本，但这似乎不起作用。我也尝试过 getSupportLoaderManager()，它也不起作用。我注意到有些人遇到了这个错误，并查看了对话以尝试找到解决方案，但我发现的那些不起作用。我在 showResults() 方法中调用 LoaderManager 顺便说一句
可搜索活动的代码：
import android.os.Bundle;
import android.app.LoaderManager;
import android.app.LoaderManager.LoaderCallbacks;
import android.app.SearchManager;
import android.app.ListActivity;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.SearchView;
import android.widget.SimpleCursorAdapter;
import android.content.Context;
import android.content.Intent;
import android.content.Loader;
import android.database.Cursor;
public class SearchResultsActivity extends FragmentActivity {
private ListView list;
DatabaseTable db;
LoaderManager lm;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_search_results);
db = new DatabaseTable(this);
handleIntent(getIntent());
}
public void onNewIntent(Intent intent) {
setIntent(intent);
handleIntent(intent);
}
private void handleIntent(Intent intent) {
if (Intent.ACTION_SEARCH.equals(intent.getAction())) {
String query = intent.getStringExtra(SearchManager.QUERY);
showResults(query);
}
}
private void showResults(String query) {
db = new DatabaseTable(this);
Cursor cursor = db.getContactMatches(query, null);
list = (ListView)findViewById(android.R.id.list);
getSupportLoaderManager().initLoader(0, null, this);
SimpleCursorAdapter mAdapter = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_1,
null, new String[] {DatabaseTable.COL_NAME}, new int[] {android.R.id.text1}, 0);
list.setAdapter(mAdapter);
list.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent contactIntent = new Intent(getApplicationContext(), ContactActivity.class);
contactIntent.setData(getIntent().getData());
startActivity(contactIntent);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.options_menu, menu);
// Associate searchable configuration with the SearchView
SearchManager searchManager =
(SearchManager) getSystemService(Context.SEARCH_SERVICE);
SearchView searchView =
(SearchView) menu.findItem(R.id.search).getActionView();
searchView.setSearchableInfo(
searchManager.getSearchableInfo(getComponentName()));
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.search:
onSearchRequested();
return true;
default:
return false;
}
}
}