android ExpandableListActivity
1:activity代码
package com.example.android20_expandablelistactivity;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import android.app.ExpandableListActivity;
import android.os.Bundle;
import android.widget.SimpleExpandableListAdapter;
public class MainActivity extends ExpandableListActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// 一级条目
List<Map<String, String>> groups = new ArrayList<Map<String, String>>();
Map<String, String> group1 = new HashMap<String, String>();
group1.put("group", "group1");
Map<String, String> group2 = new HashMap<String, String>();
group2.put("group", "group2");
groups.add(group1);
groups.add(group2);
List<Map<String, String>> child1 = new ArrayList<Map<String, String>>();
Map<String, String> child1Data1 = new HashMap<String, String>();
child1Data1.put("child", "child1Data1");
child1.add(child1Data1);
Map<String, String> child1Data2 = new HashMap<String, String>();
child1Data2.put("child", "child1Data2");
child1.add(child1Data2);
List<Map<String, String>> child2 = new ArrayList<Map<String, String>>();
Map<String, String> child2Data1 = new HashMap<String, String>();
child2Data1.put("child", "child2Data");
child2.add(child2Data1);
List<List<Map<String, String>>> childs = new ArrayList<List<Map<String, String>>>();
childs.add(child1);
childs.add(child2);
SimpleExpandableListAdapter sela = new SimpleExpandableListAdapter(
this, groups, R.layout.group, new String[] { "group" },
new int[] { R.id.groupTo }, childs, R.layout.child,
new String[] { "child" }, new int[] { R.id.childTo });
setListAdapter(sela);
}
}
layout文件夹下main.xml group.xml child.xml三个配置文件
main.xml
<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="vertical" >
<ExpandableListView
android:id="@id/android:list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:drawSelectorOnTop="false" />
</LinearLayout>
group.xml 一级条目的控制显示格式的文件
<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="vertical" >
<TextView
android:id="@+id/groupTo"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingBottom="10px"
android:paddingLeft="60px"
android:paddingTop="10px"
android:text="No data"
android:textSize="26sp" />
</LinearLayout>
child.xml 一级条目的控制显示格式的文件
<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="vertical" >
<TextView
android:id="@+id/childTo"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingBottom="5px"
android:paddingLeft="50px"
android:paddingTop="5px"
android:text="No data"
android:textSize="20sp" />
</LinearLayout>
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