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我有一个问题。我的一些字符串条目有括号 [即。鲍勃(罗伯特)]。如果我要搜索“罗伯特”,则找不到。有什么我可以做的,添加或更改以允许它在括号、括号、破折号后等中找到单词。

我的代码如下。这来自 androidhive 教程http://www.androidhive.info/2012/09/android-adding-search-functionality-to-listview/。我已经为我的目的修改了代码,但我正在显示 androidhive 代码。如何让搜索看到括号中的单词或其他符号?

package com.androidhive.androidlistviewwithsearch; 


import java.util.ArrayList; 
import java.util.HashMap; 

import android.app.Activity; 
import android.os.Bundle; 
import android.text.Editable; 
import android.text.TextWatcher; 
import android.widget.ArrayAdapter; 
import android.widget.EditText; 
import android.widget.ListView; 

public class MainActivity extends Activity { 

    // List view 
    private ListView lv; 

    // Listview Adapter 
    ArrayAdapter<String> adapter; 

    // Search EditText 
    EditText inputSearch; 

    // ArrayList for Listview 
    ArrayList<HashMap<String, String>> productList; 

    @Override
    public void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.activity_main); 

        // Listview Data 
        String products[] = {"Dell Inspiron", "HTC One X", "HTC Wildfire S", "HTC Sense", "HTC Sensation XE", 
                                "iPhone 4S", "Samsung Galaxy Note 800", 
                                "Samsung Galaxy S3", "MacBook Air", "Mac Mini", "MacBook Pro"}; 

        lv = (ListView) findViewById(R.id.list_view); 
        inputSearch = (EditText) findViewById(R.id.inputSearch); 

        // Adding items to listview 
        adapter = new ArrayAdapter<String>(this, R.layout.list_item, R.id.product_name, products); 
        lv.setAdapter(adapter); 

        /** 
         * Enabling Search Filter 
         * */
        inputSearch.addTextChangedListener(new TextWatcher() { 

            @Override
            public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) { 
                // When user changed the Text 
                MainActivity.this.adapter.getFilter().filter(cs); 
            } 

            @Override
            public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, 
                    int arg3) { 
                // TODO Auto-generated method stub 

            } 

            @Override
            public void afterTextChanged(Editable arg0) { 
                // TODO Auto-generated method stub 
            } 
        }); 
    } 
}
4

2 回答 2

1

可以像这样实现具有默认适配器的自定义过滤器:

final ArrayAdapter<Brand>[] itemsAdapter = new ArrayAdapter[]{new ArrayAdapter<Brand>(WatchoutKPIActivity.this, android.R.layout.simple_list_item_1, brands)};
            listView.setAdapter(itemsAdapter[0]);
            EditText searchText = myDialog.findViewById(R.id.search_text);
            searchText.addTextChangedListener(new TextWatcher() {

                public void onTextChanged(CharSequence arg0, int arg1, int arg2,
                                          int arg3) {

                }

                public void beforeTextChanged(CharSequence arg0, int arg1,
                                              int arg2, int arg3) {

                }

                public void afterTextChanged(Editable arg0) {
                    itemsAdapter[0] =
                            new ArrayAdapter<Brand>(WatchoutKPIActivity.this, android.R.layout.simple_list_item_1, filterBrand(arg0.toString(),brands, itemsAdapter[0]));
                    listView.setAdapter(itemsAdapter[0]);

                }
            });
于 2021-08-25T09:46:25.670 回答
0

我现在明白了。问题是提供的默认过滤器是ArrayFilter(您可以在此处查看代码)。此类假定您需要前缀搜索,因此您永远不会匹配文本开头之后的任何内容;"ob" 不会匹配 "Bob"。获得您想要的行为的唯一方法是扩展您ArrayAdapter以提供您自己的getFilter()方法实现并返回与您想要的文本匹配的新自定义过滤器。

于 2012-09-28T21:40:45.697 回答