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我正在开发一种搜索功能，如果我在android的searchview中输入搜索关键字，我应该会得到与我的搜索词匹配的学生列表。我写了一个代码，但得到一个错误。 plaese让我知道，如果我正确地使用适配器。我的onCreateOptionsMenu功能在SearchView中过滤器无法在Android中工作
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.options_menu, menu);
SearchManager searchManager =(SearchManager) getSystemService(Context.SEARCH_SERVICE);
SearchView searchView =(SearchView) menu.findItem(R.id.search).getActionView();
searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String query) {
return false;
}
@Override
public boolean onQueryTextChange(String newText) {
StudentAdapter.getFilter().filter(newText);
return true;
}
});
return true;
}
我studentAdapter类：
public class StudentAdapter extends
RecyclerView.Adapter<StudentAdapter.MyViewHolder> implements
Filterable {
public List<StudentModel> new_list;
private List<StudentModel> original_list;
@Override
public Filter getFilter() {
return new Filter() {
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint,
FilterResults results) {
new_list = (List<StudentModel>) results.values;
StudentAdapter.this.notifyDataSetChanged();
}
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults initial_results = new FilterResults();
if (constraint == null || constraint.length() == 0) {
initial_results.values = original_list;
initial_results.count = original_list.size();
} else {
// We perform filtering operation
List<StudentModel> filteredList = new ArrayList<StudentModel>();
// breaking string into words algorithm
String str = constraint.toString();
ArrayList<String> arrayOfWords = new ArrayList<String>();
int i = 0;
for (String word : str.split(" ")) {
arrayOfWords.add(word);
i++;
}
for (StudentModel model : original_list) {
boolean matched = false;
for (String element : arrayOfWords) {
if ((null != model.getName() && model
.getName().toUpperCase()
.contains(element.toString().toUpperCase()))
|| ((null != model.getClass() && model
.getClass()
.toUpperCase()
.contains(
element.toString()
.toUpperCase())))) {
matched = true;
} else {
matched = false;
break;
}
}
}
initial_results.values = filteredList;
initial_results.count = filteredList.size();
}
return initial_results;
}
};
// return null;
}
public class MyViewHolder extends RecyclerView.ViewHolder {
public TextView name, class;
public MyViewHolder(View view) {
super(view);
name = (TextView) view.findViewById(R.id.name);
class = (TextView) view.findViewById(R.id.class);
}
}
public StudentAdapter(List<StudentModel> original_list) {
this.original_list = original_list;
}
public List<StudentModel> getStudentlist() {
return original_list;
}
@Override
public StudentAdapter.MyViewHolder onCreateViewHolder(ViewGroup parent,
int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(
R.layout.original_list_row, parent, false);
return new StudentAdapter.MyViewHolder(itemView);
}
@Override
public void onBindViewHolder(StudentAdapter.MyViewHolder holder,
int position) {
StudentModel original_list_vo = original_list.get(position);
holder.name.setText(original_list_vo.getName());
holder.class.setText(original_list_vo.getClass());
}
@Override
public int getItemCount() {
return original_list.size();
}
}
任何帮助将不胜感激，谢谢提前。