过滤器的Android的ListView [英] Filter Android ListView
本文介绍了过滤器的Android的ListView的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有每行中的项目和子项的列表图。我有我想用文字键入过滤列表一个EditText场。我希望能够搜索的项目和子项目。有人能指出我在正确的方向上我怎么能这样做呢？
进口的java.util.ArrayList;
进口的java.util.HashMap;
进口的java.util.List;
进口java.util.Locale中;
进口的java.util.Map;进口android.content.Intent;
进口android.os.Bundle;
进口android.text.Editable;
进口android.text.TextWatcher;
进口android.view.View;
进口android.widget.AdapterView;
进口android.widget.AdapterView.OnItemClickListener;
进口android.widget.ArrayAdapter;
进口android.widget.EditText;
进口android.widget.ListView;
进口android.widget.SimpleAdapter;
进口android.widget.TextView;进口com.google.android.gms.maps.model.Marker;公共类FarmMarketList扩展RSFM
{
ListView的marketList;
ArrayList的＆LT;串GT;标题=新的ArrayList＆LT;串GT;（）;
ArrayList的＆LT;串GT;地址=新的ArrayList＆LT;串GT;（）;
ArrayAdapter＆LT;串GT;适配器;
的EditText listSearch; 公共无效的onCreate（捆绑savedInstanceState）
{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.farm_market_list）;
marketList =（ListView控件）findViewById（R.id.listFarmMarkets）;
listSearch =（EditText上）findViewById（R.id.listSearch）; 为（M标记：名单）
{
titles.add（m.getTitle（））;
addresses.add（m.getSnippet（））;
} 清单＆LT;地图＆LT;字符串，字符串＆GT;＆GT;数据=新的ArrayList＆LT;地图＆LT;字符串，字符串＆GT;＆GT;（）; 的for（int i = 0; I＆LT; titles.size（）;我++）
{
地图＆LT;字符串，字符串＆GT;基准=新的HashMap＆LT;字符串，字符串＆GT;（2）;
datum.put（称号，titles.get（I））;
datum.put（字幕，addresses.get（ⅰ））;
data.add（基准面）;
} SimpleAdapter simpleAdapter =新SimpleAdapter（FarmMarketList.this，数据，android.R.layout.simple_list_item_2，新的String [] {标题，副标题}，新的INT [] {android.R.id.text1，android.R .id.text2}）;
marketList.setAdapter（simpleAdapter）; //行选择
marketList.setOnItemClickListener（新OnItemClickListener（）
{
@覆盖
公共无效onItemClick（适配器视图＆LT;＆GT;母公司，视图V，INT位置，长的ID）
{
TextView的文本1 =（TextView中）v.findViewById（android.R.id.text1）;
TextView的文本2 =（TextView中）v.findViewById（android.R.id.text2）; 意图I =新意图（FarmMarketList.this，FarmMarketDetails.class）;
i.putExtra（selectedTitle，text1.getText（））;
i.putExtra（selectedAddress，text2.getText（））;
startActivity（ⅰ）;
}
}）;
}
}
编辑：我加了这个$ C $ C，但它会导致应用程序崩溃的时候我在外地的EditText开始键入
listSearch.addTextChangedListener（新TextWatcher（）
{
@覆盖
公共无效onTextChanged（CharSequence的CS，INT ARG1，ARG2 INT，INT ARG3）
{
。FarmMarketList.this.adapter.getFilter（）过滤器（CS）;
} @覆盖
公共无效beforeTextChanged（CharSequence的为arg0，ARG1 INT，INT ARG2，诠释ARG3）
{
// TODO自动生成方法存根
} @覆盖
公共无效afterTextChanged（编辑为arg0）
{
// TODO自动生成方法存根
}
}）;
解决方案
我把它加入工作
marketList.setTextFilterEnabled（真）;
和转产的onTextChange（）方法来
FarmMarketList.this.simpleAdapter.getFilter（）过滤器（CS）。
I have a list view with items and sub items in each row. I have an EditText field that I want to use to filter the list as text is typed. I want to be able to search the items and sub items. Can someone point me in the right direction on how I can do this?
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import android.content.Intent;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import com.google.android.gms.maps.model.Marker;
public class FarmMarketList extends RSFM
{
ListView marketList;
ArrayList<String> titles = new ArrayList<String>();
ArrayList<String> addresses = new ArrayList<String>();
ArrayAdapter<String> adapter;
EditText listSearch;
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.farm_market_list);
marketList = (ListView) findViewById(R.id.listFarmMarkets);
listSearch = (EditText) findViewById(R.id.listSearch);
for(Marker m : list)
{
titles.add(m.getTitle());
addresses.add(m.getSnippet());
}
List<Map<String, String>> data = new ArrayList<Map<String, String>>();
for(int i = 0; i < titles.size(); i++)
{
Map<String, String> datum = new HashMap<String, String>(2);
datum.put("title", titles.get(i));
datum.put("subtitle", addresses.get(i));
data.add(datum);
}
SimpleAdapter simpleAdapter = new SimpleAdapter(FarmMarketList.this, data, android.R.layout.simple_list_item_2, new String[] {"title", "subtitle"}, new int[] {android.R.id.text1, android.R.id.text2});
marketList.setAdapter(simpleAdapter);
// Row Selection
marketList.setOnItemClickListener(new OnItemClickListener()
{
@Override
public void onItemClick(AdapterView<?> parent, View v, int position, long id)
{
TextView text1 = (TextView) v.findViewById(android.R.id.text1);
TextView text2 = (TextView) v.findViewById(android.R.id.text2);
Intent i = new Intent(FarmMarketList.this, FarmMarketDetails.class);
i.putExtra("selectedTitle", text1.getText());
i.putExtra("selectedAddress", text2.getText());
startActivity(i);
}
});
}
}
EDIT: I added this code, but it cause the app to crash when I start typing in the EditText field.
listSearch.addTextChangedListener(new TextWatcher()
{
@Override
public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3)
{
FarmMarketList.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
}
});
解决方案
I got it working by adding
marketList.setTextFilterEnabled(true);
and changing the line in the onTextChange() method to
FarmMarketList.this.simpleAdapter.getFilter().filter(cs);
这篇关于过滤器的Android的ListView的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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