Listview的搜索过滤器

Question

我正在创建一个求职应用程序，该应用程序将作业信息显示为列表视图，其中数据来自WAMP服务器数据库。我遇到了一个问题：无法解决方法＆＃39; getStringArrayList＆＃39; ，当我为这个Listview制作搜索过滤器时。请参阅SearchFilter.java的第11行。有人可以帮忙吗？非常感谢你！

SearchFilter.java

public class SearchFilter extends ListActivity {
private EditText filterText = null;
ArrayAdapter<String> adapter = null;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

filterText = (EditText) findViewById(R.id.search_box);
filterText.addTextChangedListener(filterTextWatcher);

setListAdapter(new ArrayAdapter<String>(this,
        android.R.layout.simple_list_item_1,
        getStringArrayList()));                   ***<<<<< this line !***
}

private TextWatcher filterTextWatcher = new TextWatcher() {

public void afterTextChanged(Editable s) {
}

public void beforeTextChanged(CharSequence s, int start, int count,
                              int after) {
}

public void onTextChanged(CharSequence s, int start, int before,
                          int count) {
    adapter.getFilter().filter(s);
}

};

@Override
protected void onDestroy() {
super.onDestroy();
filterText.removeTextChangedListener(filterTextWatcher);
}

}