从编辑文本中过滤列表视图 [英] Filter list view from edit text

问题描述

我有一个作为搜索栏的编辑文本和一个过滤我输入的文本的列表视图，但不幸的是，它不会过滤列表视图.我使用了带有对象 Friend 的自定义数组适配器.朋友对象有名字、地址和电话号码，但我只想过滤它的名字.在我的活动中...

searchBarTextView.addTextChangedListener(new TextWatcher() {@覆盖public void onTextChanged(CharSequence s, int start, int before, int count) {friendListAdapter.getFilter().filter(s);}}

在适配器中...

<前>@覆盖公共过滤器getFilter(){Log.d(TAG, "开始 getFilter");if(newFilter == null) {新过滤器 = 新过滤器() {@覆盖protected void publishResults(CharSequence 约束，FilterResults 结果) {//TODO 自动生成的方法存根Log.d(TAG, "发布结果");notifyDataSetChanged();}

<代码> @Override受保护的FilterResults performFiltering(CharSequence约束){Log.d(TAG, "执行过滤");约束 = 约束.toString().toLowerCase();Log.d(TAG, "约束:"+约束);列出<ChatObject>filtersFriendList = new LinkedList();for(int i=0; i

有人可以帮我如何正确显示过滤后的数组适配器吗?我认为 notifyDataSetChanged 没有被调用.谢谢.

解决方案

我的问题解决了，发现我要重写 getCount() 和 getItem().

I have an edit text as a search bar and a list view that filters the text that I typed but unfortunately, it doesn't filter the list view. I have used an customize array adapter with object Friend. Friend object has name, address and phone number but I only want to filter its name. In my activity...

searchBarTextView.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
    friendListAdapter.getFilter().filter(s);
}}

While in adapter...

    @Override
    public Filter getFilter() {
        Log.d(TAG, "begin getFilter");
        if(newFilter == null) {
            newFilter = new Filter() {
                @Override
                protected void publishResults(CharSequence constraint, FilterResults results) {
                    // TODO Auto-generated method stub
                    Log.d(TAG, "publishResults");
                    notifyDataSetChanged();
                }


            @Override
            protected FilterResults performFiltering(CharSequence constraint) {
                Log.d(TAG, "performFiltering");

                constraint = constraint.toString().toLowerCase();
                Log.d(TAG, "constraint : "+constraint);

                List<ChatObject> filteredFriendList = new LinkedList<ChatObject>();

                for(int i=0; i<friendList.size(); i++) {
                    Friend newFriend = friendList.get(i);
                    Log.d(TAG, "displayName : "+newFriend.getDisplayName().toLowerCase());
                    if(newFriend.getDisplayName().toLowerCase().contains(constraint)) {
                        Log.d(TAG, "equals : "+newFriend.getDisplayName());
                        filteredFriendList.add(newFriend);
                    }
                }

                FilterResults newFilterResults = new FilterResults();
                newFilterResults.count = filteredFriendList.size();
                newFilterResults.values = filteredFriendList;
                return newFilterResults;
            }
        };
    }
    Log.d(TAG, "end getFilter");
    return newFilter;
}

Could someone please help me how to correctly show the filtered array adapter? I think the notifyDataSetChanged is not invoked. Thanks.

解决方案

My problem is solved, found out that I have to override getCount() and getItem().

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