基本功能Expandablelistview，展開列項目的子項目列表，附加圖示
1./res/layout/
activity_main 主畫面
2./res/layout/
list_group.xml 標題layout
3./res/layout/
list_item.xml 內容layout
4.
ExpandableListAdapter.java
package tw.android;
import java.util.HashMap;
import java.util.List;
import android.content.Context;
import android.graphics.Typeface;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class ExpandableListAdapter extends BaseExpandableListAdapter {
private Context context;
private int[] listIv; // 標題圖示
private List<String> listDataHeader; // 標題
private HashMap<String, List<String>> listDataChild; // 內容
/**
* @param listIv
* -標題圖示
* @param listDataHeader
* -標題
* @param listChildData
* -內容
*/
public ExpandableListAdapter(Context context, int[] listIv,
List<String> listDataHeader,
HashMap<String, List<String>> listChildData) {
this.context = context;
this.listIv = listIv;
this.listDataHeader = listDataHeader;
this.listDataChild = listChildData;
}
/* -------------------- 內容 -------------------- */
public Object getChild(int groupPosition, int childPosititon) {
return this.listDataChild.get(this.listDataHeader.get(groupPosition))
.get(childPosititon);
}
public int getChildrenCount(int groupPosition) {
return this.listDataChild.get(this.listDataHeader.get(groupPosition))
.size();
}
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
/* 內容View */
public View getChildView(int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
final String childText = (String) getChild(groupPosition, childPosition); // 取得內容
/* 設置內容layout */
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this.context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_item, null);
}
/* 設置內容 */
TextView txtListChild = (TextView) convertView
.findViewById(R.id.lblListItem);
txtListChild.setText(childText);
return convertView;
}
/* -------------------- 標題 -------------------- */
public Object getGroup(int groupPosition) {
return this.listDataHeader.get(groupPosition);
}
public int getGroupCount() {
return this.listDataHeader.size();
}
public long getGroupId(int groupPosition) {
return groupPosition;
}
/* -------------------- 標題圖示 -------------------- */
public Object getGroupView(int groupPosition) {
return Integer.toString(this.listIv[groupPosition]);
}
public int getGroupViewCount() {
return this.listIv.length;
}
public long getGroupViewId(int groupPosition) {
return groupPosition;
}
/* 標題View */
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
String headerIv = (String) getGroupView(groupPosition); // 取得圖示
String headerTitle = (String) getGroup(groupPosition); // 取得標題
/* 設置標題layout */
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this.context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_group, null);
}
/* 設置圖示 */
ImageView iv = (ImageView) convertView.findViewById(R.id.iv);
iv.setImageResource(Integer.parseInt(headerIv));
/* 設置標題 */
TextView lblListHeader = (TextView) convertView
.findViewById(R.id.lblListHeader);
lblListHeader.setTypeface(null, Typeface.BOLD);
lblListHeader.setText(headerTitle);
return convertView;
}
/* ------------------------------------------------ */
public boolean hasStableIds() {
return false;
}
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
5.
MainActivity.java
package tw.android;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.ExpandableListView;
import android.widget.ExpandableListView.OnChildClickListener;
import android.widget.ExpandableListView.OnGroupCollapseListener;
import android.widget.ExpandableListView.OnGroupExpandListener;
import android.widget.Toast;
public class MainActivity extends Activity {
ExpandableListAdapter listAdapter;
ExpandableListView expListView;
int[] listIv; //圖示
List<String> listDataHeader; //標題
HashMap<String, List<String>> listDataChild; //內容
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 取得ExpandableListView
expListView = (ExpandableListView) findViewById(R.id.lvExp);
// 列表資料
prepareListData();
/* listIv-圖示, listDataHeader-標題, listDataChild-內容*/
listAdapter = new ExpandableListAdapter(this,listIv, listDataHeader,
listDataChild);
// 將列表資料加入至展開列表單
expListView.setAdapter(listAdapter);
// 點選標題 展開 監聽事件
expListView.setOnGroupExpandListener(new OnGroupExpandListener() {
public void onGroupExpand(int groupPosition) {
Toast.makeText(getApplicationContext(),
"您正在收看:" + listDataHeader.get(groupPosition),
Toast.LENGTH_SHORT).show();
}
});
// 點選標題監聽事件
expListView.setOnChildClickListener(new OnChildClickListener() {
public boolean onChildClick(ExpandableListView parent, View v,
int groupPosition, int childPosition, long id) {
Toast.makeText(
getApplicationContext(),
"開始閱讀:"
+ listDataHeader.get(groupPosition)
+ " : "
+ listDataChild.get(
listDataHeader.get(groupPosition)).get(
childPosition), Toast.LENGTH_SHORT)
.show();
return false;
}
});
// 點選標題 收回 監聽事件
expListView.setOnGroupCollapseListener(new OnGroupCollapseListener() {
public void onGroupCollapse(int groupPosition) {
Toast.makeText(getApplicationContext(),
"放回書架:" + listDataHeader.get(groupPosition),
Toast.LENGTH_SHORT).show();
}
});
}
/* 列表資料 */
private void prepareListData() {
listIv = new int[]{R.drawable.p1,R.drawable.p2,R.drawable.p3}; //圖示
listDataHeader = new ArrayList<String>(); // 標題
listDataChild = new HashMap<String, List<String>>(); // 內容
listDataHeader.add("水滸傳");
listDataHeader.add("紅樓夢");
listDataHeader.add("三國演義");
// Adding child data
List<String> first = new ArrayList<String>();
first.add("第一回 張天師祈禳瘟疫 洪太尉誤走妖魔");
first.add("第二回 王教頭私走延安府 九紋龍大鬧史家村");
first.add("第三回 史大郎夜走華陰縣 魯提轄拳打鎮關西");
first.add("第四回 趙員外重修文殊院 魯智深大鬧五臺山");
first.add("第五回 小霸王醉入銷金帳 花和尚大鬧桃花村");
List<String> second = new ArrayList<String>();
second.add("第一回 甄士隱夢幻識通靈 賈雨村風塵懷閨秀");
second.add("第二回 賈夫人仙逝揚州城 冷子興演說榮國府");
second.add("第三回 託內兄如海薦西賓 接外孫賈母惜孤女");
second.add("第四回 薄命女偏逢薄命郎 葫蘆僧判斷葫蘆案");
second.add("第五回 賈寶玉神遊太虛境 警幻仙曲演紅樓夢");
List<String> end = new ArrayList<String>();
end.add("第一回 宴桃園豪傑三結義，斬黃巾英雄首立功");
end.add("第二回 張翼德怒鞭督郵，何國舅謀誅宦豎");
end.add("第三回 議溫明董卓叱丁原，餽金珠李肅說呂布");
end.add("第四回 廢漢帝陳留為皇，謀董賊孟德獻刀");
end.add("第五回 發矯詔諸鎮應曹公，破關兵三英戰呂布");
listDataChild.put(listDataHeader.get(0), first); // 標題, 內容
listDataChild.put(listDataHeader.get(1), second);
listDataChild.put(listDataHeader.get(2), end);
}
}
檔案下載:
https://github.com/terryyamg/ExpandablelistviewTest
參考連結:
http://www.androidhive.info/2013/07/android-expandable-list-view-tutorial/
