Question

我目前有一个包含几个字符串的列表视图。这些是从strings.xml

中的字符串数组中调用的

<string name="app_name">Taxi Me</string>
<string-array name="taxi_array">
    <item>Barrys Taxi</item>
    <item>Boom Taxi</item>

</string-array>

我想要做的是为这些创建子项目，以便我可以显示地址和联系人详细信息等字段。我不久前制作了一个自定义列表视图但是无法解决如何使用strings.xml文件来完成它？我需要使用哪些特定标签，以便它们显示在列表视图中？

主要活动代码：

    public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    final String[] taxi = getResources().getStringArray(R.array.taxi_array);
    final String[] address = getResources().getStringArray(R.array.taxi_add);

    setListAdapter(new ArrayAdapter<String>(this, R.layout.listtaxi, taxi));

    final ListView lv = getListView();
    lv.setTextFilterEnabled(true);

    for (int i = 0; i < taxi.length; i++) {
        lv.add(new ListTaxi (taxi[i], address[i]));
    }

 /*lv.setOnItemClickListener(new OnItemClickListener() {
      public void onItemClick(AdapterView<?> parent, View view,
          int position, long id) {
        // When clicked, show a toast with the TextView text
        Toast.makeText(getApplicationContext(), ((TextView) view).getText(),
            Toast.LENGTH_LONG).show();
      }
    });
   */
        lv.setOnItemClickListener(new OnItemClickListener() {
        public void onItemClick(AdapterView<?> a, View v, final int position, long id)
       {   
            final int selectedPosition = position;
            AlertDialog.Builder adb=new AlertDialog.Builder(ListTaxi.this); 
             adb.setTitle("Taxi Booking");
             adb.setMessage("You Have Selected: "+lv.getItemAtPosition(position)); 
             adb.setPositiveButton("Book", new DialogInterface.OnClickListener() {
                 public void onClick(DialogInterface dialog, int id) {
                     Intent intent = new Intent(getApplicationContext(), Booking.class);
                     intent.putExtra("booking",  taxi[selectedPosition]);
                     startActivity(intent);
                 }
             });
             adb.setNegativeButton("Cancel", null); 
             adb.show(); 
         }
     });

Answer 1

编辑：好的，只是为了踢，我把它扔在了一起。它可以正确编译和运行，看看你是否可以根据自己的特殊需求进行调整：

<强>布局/ taxi_list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="100dp"
    android:padding="10dp"
    android:orientation="vertical"
    >
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/taxi_name"
        />
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/taxi_address"
        />
</LinearLayout>

<强>布局/ main.xml中

<?xml version="1.0" encoding="utf-8"?>
<ListView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+android:id/list"
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    />

<强> TaxiMain.java

package com.test.taxi;

import java.util.ArrayList;
import java.util.List;

import android.app.ListActivity;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;

public class TaxiMain extends ListActivity {
    /** Called when the activity is first created. 
     * @return */

    class Taxi {
        private String taxiName;
        private String taxiAddress;

        public String getName() {
            return taxiName;
        }

        public void setName(String name) {
            taxiName = name;
        }

        public String getAddress() {
            return taxiAddress;
        }

        public void setAddress(String address) {
            taxiAddress = address;
        }

        public Taxi(String name, String address) {
            taxiName = name;
            taxiAddress = address;
        }
    }

    public class TaxiAdapter extends ArrayAdapter<Taxi> {
        private ArrayList<Taxi> items;
        private TaxiViewHolder taxiHolder;

        private class TaxiViewHolder {
            TextView name;
            TextView address; 
        }

        public TaxiAdapter(Context context, int tvResId, ArrayList<Taxi> items) {
            super(context, tvResId, items);
            this.items = items;
        }

        @Override
        public View getView(int pos, View convertView, ViewGroup parent) {
            View v = convertView;
            if (v == null) {
                LayoutInflater vi = (LayoutInflater)getSystemService(LAYOUT_INFLATER_SERVICE);
                v = vi.inflate(R.layout.feed_view, null);
                taxiHolder = new TaxiViewHolder();
                taxiHolder.name = (TextView)v.findViewById(R.id.taxi_name);
                taxiHolder.address = (TextView)v.findViewById(R.id.taxi_address);
                v.setTag(taxiHolder);
            } else taxiHolder = (TaxiViewHolder)v.getTag(); 

            Taxi taxi = items.get(pos);

            if (taxi != null) {
                taxiHolder.name.setText(taxi.getName());
                taxiHolder.address.setText(taxi.getAddress());
            }

            return v;
        }
    }

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

        String[] taxiNames = getResources().getStringArray(R.array.taxi_name_array);
        String[] taxiAddresses = getResources().getStringArray(R.array.taxi_address_array);

        ArrayList<Taxi> taxiList = new ArrayList<Taxi>();

        for (int i = 0; i < taxiNames.length; i++) {
            taxiList.add(new Taxi(taxiNames[i], taxiAddresses[i]));
        }

        setListAdapter(new TaxiAdapter(this, R.layout.taxi_list_item, taxiList));      
    }
}

_ __ _ _END EDIT_ _ __ _ __

你可能最好使用数据库来做这样的事情，以保持记录捆绑在一起。如果您已经开始使用数组，那么您可以做的一件事就是为您需要的每个项目创建一个单独的数组（例如taxi_array，taxi_address_array，taxi_phone_array），然后在您的代码中创建一个Taxi对象：

class Taxi {
    String taxiName;
    String taxiAddress;
    String taxiPhone;

    public Taxi(String name, String address, String phone) {
        taxiName = name;
        taxiAddress = address;
        taxiPhone = phone;
    }
}

private List<Taxi> taxiList;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    String[] taxiNames = getResources().getStringArray("taxi_array");
    String[] taxiAddresses = getResources().getStringArray("taxi_address_array");
    String[] taxiPhones = getResources().getStringArray("taxi_phone_array");
    taxiList = new ArrayList<Taxi>();

    for (int i = 0; i < taxiNames.length; i++) {
        taxiList.add(new Taxi(taxiNames[i], taxiAddresses[i], taxiPhones[i]));
    }
}

（这是未编译的代码，可能需要进行一些调整）但是您将拥有一个Taxi项目列表，其中包含来自不同阵列的所有已编译信息。数据库仍然是一个更好的选择（甚至是资产中包含数据的CSV文件）。

Answer 2

我有同样的问题，我这样解决了自己：你可以简单地添加像这个代码的子项，你不需要那么多的编码!!

    <string name="app_name">Taxi Me</string>
    <string-array name="taxi_array">
<item>
     <item>Barrys Taxi</item>
     <item>adress</item>
     <item>contact</item>
     <item>ANY THING...</item>
</item>

<item>
     <item>Boom Taxi</item>
     <item>adress</item>
     <item>contact</item>
     <item>ANY THING...</item>
</item>
    </string-array>

Answer 3

您是否在寻找某种嵌套列表？看看ExpandableListView：
http://developer.android.com/reference/android/widget/ExpandableListView.html
和
http://mylifewithandroid.blogspot.com/2008/05/expandable-lists.html

将Subitem添加到Android中的列表视图

3 个答案: