我的Android進階之旅------>Android二級ListView列表的實現
阿新 • • 發佈：2017-07-16
cat -i gravity 寫真 技術分享 家政服務 個性 韓國 服務
接著給兩個ListView分別寫適配器，父類ListView適配器為MyListAdapter，子類ListView適配器為MySubListAdapter。代碼例如以下：
相應的item布局文件為：/res/layout/mylist_item.xml
/src/com/oyp/multilistview/MySubListAdapter.java
相應的item布局文件為：/res/layout/mysublist_item.xml
最後是Activity的實現，代碼例如以下：
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實現例如以下圖所看到的的二級列表效果
首先是在布局文件裏，布局兩個ListView,代碼例如以下：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<ListView
android:id="@+id/listView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="#e4e3de"
android:choiceMode="singleChoice"
android:divider="@drawable/listitem_divide"
android:listSelector="#00000000"
android:scrollbars="none" >
</ListView>
<ListView
android:id="@+id/subListView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:layout_weight="1"
android:background="#e4e3de"
android:divider="@drawable/listitem_divide" >
</ListView>
</LinearLayout>接著給兩個ListView分別寫適配器，父類ListView適配器為MyListAdapter，子類ListView適配器為MySubListAdapter。代碼例如以下：
/src/com/oyp/multilistview/MyListAdapter.java
package com.oyp.multilistview;
import android.content.Context;
import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
import android.widget.TextView;
public class MyListAdapter extends BaseAdapter {
Context context;
LayoutInflater inflater;
String[] categories;
int last_item;
private int selectedPosition = -1;
public MyListAdapter(Context context, String[] categories) {
this.context = context;
this.categories = categories;
inflater = LayoutInflater.from(context);
}
@Override
public int getCount() {
return categories.length;
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
if (convertView == null) {
convertView = inflater.inflate(R.layout.mylist_item, null);
holder = new ViewHolder();
holder.textView = (TextView) convertView
.findViewById(R.id.textView);
holder.layout = (LinearLayout) convertView
.findViewById(R.id.colorlayout);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
if (selectedPosition == position) {
holder.textView.setTextColor(Color.WHITE);
holder.layout.setBackgroundColor(Color.TRANSPARENT);
} else {
holder.textView.setTextColor(Color.BLUE);
holder.layout.setBackgroundColor(Color.LTGRAY);
}
holder.textView.setText(categories[position]);
holder.textView.setTextColor(Color.BLACK);
return convertView;
}
public static class ViewHolder {
public TextView textView;
public LinearLayout layout;
}
public void setSelectedPosition(int position) {
selectedPosition = position;
}
}
相應的item布局文件為：/res/layout/mylist_item.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/colorlayout" android:layout_width="fill_parent" android:layout_height="fill_parent" > <TextView android:id="@+id/textView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="8dip" android:layout_marginLeft="8dip" android:layout_marginTop="8dip" android:textSize="16dip" /> </LinearLayout>
/src/com/oyp/multilistview/MySubListAdapter.java
package com.oyp.multilistview;
import android.content.Context;
import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
public class MySubListAdapter extends BaseAdapter {
Context context;
LayoutInflater layoutInflater;
String[][] sub_categories;
public int categoryPoition;
public MySubListAdapter(Context context, String[][] sub_categories, int position) {
this.context = context;
this.sub_categories = sub_categories;
layoutInflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
this.categoryPoition = position;
}
@Override
public int getCount() {
return sub_categories.length;
}
@Override
public Object getItem(int position) {
return getItem(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder = null;
if (convertView == null) {
convertView = layoutInflater.inflate(R.layout.mysublist_item, null);
viewHolder = new ViewHolder();
viewHolder.textView = (TextView) convertView
.findViewById(R.id.subTextView);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder.textView.setText(sub_categories[categoryPoition][position]);
viewHolder.textView.setTextColor(Color.BLACK);
return convertView;
}
public static class ViewHolder {
public TextView textView;
}
}
相應的item布局文件為：/res/layout/mysublist_item.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" > <TextView android:id="@+id/subTextView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="8dip" android:layout_marginLeft="8dip" android:layout_marginTop="8dip" android:textSize="16dip" /> </LinearLayout>
最後是Activity的實現，代碼例如以下：
/src/com/oyp/multilistview/MainActivity.java
package com.oyp.multilistview;
import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;
public class MainActivity extends Activity {
private ListView listView;
private ListView subListView;
private MyListAdapter myAdapter;
private MySubListAdapter subAdapter;
String sub_categories[][] = new String[][] {
new String[] { "所有美食", "本幫江浙菜", "川菜", "粵菜", "湘菜", "東北菜", "臺灣菜",
"新疆/清真", "素菜", "火鍋", "自助餐", "小吃快餐", "日本", "韓國料理", "東南亞菜",
"西餐", "面包甜點", "其它" },
new String[] { "所有休閑娛樂", "咖啡廳", "酒吧", "茶館", "KTV", "電影院", "遊樂遊藝",
"公園", "景點/郊遊", "洗浴", "足浴按摩", "文化藝術", "DIY手工坊", "桌球館",
"桌面遊戲", "很多其它休閑娛樂" },
new String[] { "所有購物", "綜合商場", "服飾鞋包", "運動戶外", "珠寶飾品", "化妝品",
"數碼家電", "親子購物", "家居建材", "書店", "書店", "眼鏡店", "特色集市",
"很多其它購物場所", "食品茶酒", "超市/便利店", "藥店" },
new String[] { "所有酒店", "經濟型酒店", "豪華酒店", "度假酒店", "公寓式酒店",
"客棧/青旅/民宿", "主題精品酒店", " 溫泉酒店", "親子酒店" },
new String[] { "所有麗人", "美發", "美容/SPA", "美甲", "瘦身纖體", "個性寫真",
"瑜伽/舞蹈", "其它" },
new String[] { "所有親子", "親子遊樂", "親子攝影", "幼兒教育", "主題公園/遊樂場",
"展覽/演出/賽事", "景點郊遊", "DIY手工", "農家樂" },
new String[] { "所有生活", "商場購物劵", "汽車服務", "鮮花婚慶", "體檢保健", "寵物服務",
"家政服務", "照片沖印", "配眼鏡" },
};
String categories[] = new String[] { "美食", "休閑娛樂", "購物", "酒店", "麗人", "親子",
"生活服務" };
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView) findViewById(R.id.listView);
subListView = (ListView) findViewById(R.id.subListView);
myAdapter = new MyListAdapter(getApplicationContext(), categories);
listView.setAdapter(myAdapter);
setSubList(0);
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1,
int position, long arg3) {
setSubList(position);
}
});
}
public void setSubList(int position) {
final int location = position;
myAdapter.setSelectedPosition(position);
myAdapter.notifyDataSetInvalidated();
subAdapter = new MySubListAdapter(getApplicationContext(), sub_categories,
position);
subListView.setAdapter(subAdapter);
subListView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1,
int position, long arg3) {
// TODO Auto-generated method stub
Toast.makeText(getApplicationContext(),
sub_categories[location][position], Toast.LENGTH_SHORT)
.show();
}
});
}
}
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作者：歐陽鵬 歡迎轉載，與人分享是進步的源泉！
轉載請保留原文地址：http://blog.csdn.net/ouyang_peng
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我的Android進階之旅------>Android二級ListView列表的實現