ListView ArrayAdapter通过两个名称过滤

Question

我已经为Android列出了与名字等于约翰的列表的申请。但是我需要查看与name1或name2的联系，例如Peter OR John。

我尝试了设置过滤器" Peter OR John"，" Peter || John"，但它不起作用。你能帮我吗？

Answer 1

    you should be write your custom adapter and filter. 

    public class MyAdapter<T extends BaseEntity> extends ArrayAdapter<T> implements Filterable{
        private MainClass.ObjectFilter filter;
        private final List<T> objects;
        public MyAdapter(List<T> objects){
             enter code here
this.objects = objects;
             getFilter();
        }
        @Override
        public Filter getFilter() {
            if (filter == null){
                MainClass ofc = new MainClass(objects);
                filter  = ofc.getObjectFilter();
            }
            return filter;
        }
        enter code here 
    }

    and custom filter

    public class MainClass<T extends BaseEntity> extends BaseEntity {
        private List<T> allObjectItemsArray; // all contact list
        private List<T> filteredObjectItemsArray; // filtered contact list
        public ObjectFilterMainClass(List<T> objects)
          {
            this.allObjectItemsArray = new ArrayList<T>();
            this.allObjectItemsArray.addAll(objects);
            this.filteredObjectItemsArray = new ArrayList<T>();
            this.filteredObjectItemsArray.addAll(allObjectItemsArray);
        }
        public ObjectFilter getObjectFilter(){
        return new ObjectFilter();
        }

        public class ObjectFilter extends Filter {
        @Override
        public FilterResults performFiltering(CharSequence constraint) {
                // constraint search text -->  Peter OR John
                constraint = constraint.toString().toLowerCase();
            FilterResults result = new FilterResults();
            if (constraint != null && constraint.toString().length() > 0) {
            ArrayList<T> filteredItems = new ArrayList<T>();
            a: for (int i = 0; i < allObjectItemsArray.size(); i++) {
                T m = allObjectItemsArray.get(i);
                        // cast m to your class
                String fistnameAndLastName = ((your object class) m).getFirstName() + ((your object class) m).getLastName();
                if (fistnameAndLastName.toLowerCase().contains(constraint)) {
                    filteredItems.add(m);
                    continue a;
                }
            }
            result.count = filteredItems.size();
            result.values = filteredItems;
            } else {
            synchronized (this) {
                result.values = allObjectItemsArray;
                result.count = allObjectItemsArray.size();
            }
            }
            return result;
        }
          @Override
        public void publishResults(CharSequence constraint, FilterResults results) {
            filteredObjectItemsArray = (ArrayList<T>) results.values;
            adapter.notifyDataSetChanged();
            adapter.clear();
            if (filteredObjectItemsArray != null) {
            for (int i = 0; i < filteredObjectItemsArray.size(); i++)
                adapter.add(filteredObjectItemsArray.get(i));
            }
            adapter.notifyDataSetInvalidated();
        }
        }
    }
    main point is get first and last name and check the constraint text.
    after that if true add filteredItems list.
    String fistnameAndLastName = ((your object class) m).getFirstName() + ((your object class) m).getLastName();
    if (fistnameAndLastName.toLowerCase().contains(constraint)) 
    {
        filteredItems.add(m);
        continue a;

    and use :
    EditText edt = (EditText) this.view.findViewById(R.id.edtTxtName);
            edt.addTextChangedListener(new TextWatcher() {
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
            }
            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                addFilterToList();
            }
            @Override
            public void afterTextChanged(Editable s) {
            }
            }); 
    public void addFilterToList() {
        ListView listView = (ListView) this.view.findViewById(R.id.listView);
        EditText edt = (EditText) this.view.findViewById(R.id.edtTxtName);
        MyAdapter myA = (MyAdapter) //
            (listView.getAdapter());  
        myA.getFilter().filter(edt.getText());
        listView.setAdapter(myA);
        }