本文介绍了onChildClickListener不是在扩展列表视图的工作的处理方法，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
我创建一个应用程序，它具有可扩展列表视图我能够得到扩展列表视图，但我的孩子的点击不工作。我想就点击扩展列表视图中的子显示敬酒消息。请帮帮我，让我知道我在做什么错误。先谢谢了。
我的活动code： 进口android.content.Context;
进口android.database.Cursor;
进口android.graphics.Color;
进口android.os.Bundle;
进口android.support.v7.app.AppCompatActivity;
进口android.support.v7.widget.Toolbar;
进口android.view.Menu;
进口android.view.MenuItem;
进口android.view.View;
进口android.widget.ExpandableListAdapter;
进口android.widget.ExpandableListView;
进口android.widget.SimpleCursorTreeAdapter;
进口android.widget.Toast; 进口的java.util.ArrayList;
进口的java.util.HashMap;
进口的java.util.List;
公共类AdminActivity扩展AppCompatActivity { 工具栏工具栏;
ExpandableListAdapter listAdapter;
清单＆LT;串GT; titleText;
SQLiteDataBaseAdapter分贝; HashMap的＆LT;字符串列表＆LT;串GT;＆GT; listDataChild; ExpandableListView登录，安卓，IOS，测试，JAVA，dotNet的，操作系统，HR，别人; @覆盖
保护无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.activity_admin）; 工具栏=（栏）findViewById（R.id.appBar）;
toolbar.setTitle（管理屏）;
toolbar.setTitleTextColor（Color.WHITE）; 登录=（ExpandableListView）findViewById（R.id.expandableListViewLogin）; titleText =新的ArrayList＆LT;＆GT;（）;
titleText.add（一个用户身份认证）;
titleText.add（Android的帖子认证）;
titleText.add（iOS的帖子认证）;
titleText.add（测试验证的帖子）;
titleText.add（Java的帖子认证）;
titleText.add（点网帖认证）;
titleText.add（OS帖子认证）;
titleText.add（HR帖子认证）;
titleText.add（其他帖子认证）;
SQLiteDataBaseAdapter DB =新SQLiteDataBaseAdapter（本）;
清单＆LT;串GT; childDataLogin = db.getLoginList（）;
清单＆LT;串GT; childDataAndroid = db.getAndroidList（）;
清单＆LT;串GT; childDataIos = db.getIosList（）;
清单＆LT;串GT; childDataTesting = db.getTestingList（）;
清单＆LT;串GT; childDataJava = db.getJavaList（）;
清单＆LT;串GT; childDataDotNet = db.getDotNetList（）;
清单＆LT;串GT; childDataOs = db.getOSList（）;
清单＆LT;串GT; childDataHr = db.getHRList（）;
清单＆LT;串GT; childDataOthers = db.getOthersList（）; listDataChild =新的HashMap＆LT;＆GT;（）;
listDataChild.put（titleText.get（0），childDataLogin）; //头，儿童数据
listDataChild.put（titleText.get（1），childDataAndroid）;
listDataChild.put（titleText.get（2），childDataIos）;
listDataChild.put（titleText.get（3），childDataTesting）;
listDataChild.put（titleText.get（4），childDataJava）;
listDataChild.put（titleText.get（5），childDataDotNet）;
listDataChild.put（titleText.get（6），childDataOs）;
listDataChild.put（titleText.get（7），childDataHr）;
listDataChild.put（titleText.get（8），childDataOthers）; listAdapter =新MyExpandableListAdapter（这一点，titleText，listDataChild）;
login.setAdapter（listAdapter）; //列表视图儿童点击监听器
login.setOnChildClickListener（新ExpandableListView.OnChildClickListener（）{ @覆盖
公共布尔onChildClick（ExpandableListView父视图V，
INT groupPosition，诠释childPosition，长ID）{
Toast.makeText（
getApplicationContext（），
titleText.get（groupPosition）
+：
+ listDataChild.get（
titleText.get（groupPosition））。得到（
childPosition），Toast.LENGTH_SHORT）
。显示（）;
返回true;
}
}）; } @覆盖
公共布尔onCreateOptionsMenu（菜单菜单）{
//充气菜单;如果是present这增加了项目操作栏。
。getMenuInflater（）膨胀（R.menu.menu_admin，菜单）;
返回true;
} @覆盖
公共布尔onOptionsItemSelected（菜单项项）{
//处理动作栏项目点击这里。操作栏会
//自动处理上点击主页/向上按钮，只要
//你在AndroidManifest.xml中指定一个父活动。
INT ID = item.getItemId（）; // noinspection SimplifiableIfStatement
如果（ID == R.id.action_settings）{
返回true;
} 返回super.onOptionsItemSelected（项目）;
} }孩子的布局： ＆LT; XML版本=1.0编码=UTF-8＆GT？;
＆LT; LinearLayout中的xmlns：机器人=http://schemas.android.com/apk/res/android
机器人：layout_width =match_parent
机器人：layout_height =match_parent
机器人：方向=垂直＆GT; ＆LT;的TextView
机器人：ID =@ + ID / lblListItem
机器人：layout_width =FILL_PARENT
机器人：layout_height =WRAP_CONTENT
机器人：TEXTSIZE =17sp
机器人：paddingTop =5DP
机器人：paddingBottom会=5DP
机器人：paddingLeft =机器人：ATTR / expandableList preferredChildPaddingLeft/＆GT; ＆LT; / LinearLayout中＆GT;适配器code： 公共类MyExpandableListAdapter扩展BaseExpandableListAdapter {
私人语境_context;
私人列表＆LT;串GT; _listDataHeader; //头标题
//子数据头标题格式，标题子
私人的HashMap＆LT;字符串列表＆LT;串GT;＆GT; _listDataChild; 公共MyExpandableListAdapter（上下文的背景下，列表与LT;弦乐＆GT; listDataHeader，HashMap的＆LT;字符串列表＆LT;串GT;＆GT; listChildData）{
this._context =背景;
this._listDataHeader = listDataHeader;
this._listDataChild = listChildData;
} @覆盖
公众诠释getGroupCount（）{
返回this._listDataHeader.size（）;
} @覆盖
公众诠释getChildrenCount（INT groupPosition）{
返回this._listDataChild.get（this._listDataHeader.get（groupPosition））
。尺寸（）;
} @覆盖
公共对象getGroup（INT groupPosition）{
返回this._listDataHeader.get（groupPosition）;
} @覆盖
公共对象getChild（INT groupPosition，诠释childPosititon）{
返回this._listDataChild.get（this._listDataHeader.get（groupPosition））
获得（childPosititon）;
} @覆盖
众长getGroupId（INT groupPosition）{
返回groupPosition;
} @覆盖
众长getChildId（INT groupPosition，诠释childPosition）{
返回childPosition;
} @覆盖
公共布尔hasStableIds（）{
返回false;
} @覆盖
公共查看getGroupView（INT groupPosition，布尔isExpanded，
查看convertView，父母的ViewGroup）{
字符串headerTitle =（字符串）getGroup（groupPosition）;
如果（convertView == NULL）{
LayoutInflater infalInflater =（LayoutInflater）this._context
.getSystemService（Context.LAYOUT_INFLATER_SERVICE）;
convertView = infalInflater.inflate（R.layout.list_group，NULL）;
} TextView的lblListHeader =（TextView中）convertView
.findViewById（R.id.expandableListHeader）;
lblListHeader.setTypeface（NULL，Typeface.BOLD）;
lblListHeader.setText（headerTitle）; 返回convertView;
} @覆盖
公共查看getChildView（INT groupPosition，最终诠释childPosition，
布尔isLastChild，查看convertView，父母的ViewGroup）{ 最后弦乐childText =（字符串）getChild（groupPosition，childPosition）; 如果（convertView == NULL）{
LayoutInflater infalInflater =（LayoutInflater）this._context
.getSystemService（Context.LAYOUT_INFLATER_SERVICE）;
convertView = infalInflater.inflate（R.layout.list_item，NULL）;
} TextView的txtListChild =（TextView中）convertView
.findViewById（R.id.lblListItem）; txtListChild.setText（childText）;
返回convertView; } @覆盖
公共布尔isChildSelectable（INT I，INT I1）{
返回false;
}
}
解决方案
一定要重写您的扩展列表适配器的 isChildSelectable 方法并返回true，像这样：
公共类MyExpandableListAdapter扩展BaseExpandableListAdapter {
@覆盖
公共布尔isChildSelectable（INT groupPosition，诠释childPosition）{
返回true;
}
...
}
或
机器人：可聚焦=假
您 expandlist_child_item.xml 文件中的复选框部分。
我希望这可以帮助别人。
I am creating an application, which has an expandable list view I am able to get the expandable list view, but my child click is not working. I am trying to display a toast message on clicking a child in expandable list view. Please help me and let me know what mistake am I doing. Thanks in advance.
My Activity code:
import android.content.Context;
import android.database.Cursor;
import android.graphics.Color;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.SimpleCursorTreeAdapter;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
public class AdminActivity extends AppCompatActivity {
Toolbar toolbar;
ExpandableListAdapter listAdapter;
List<String> titleText;
SQLiteDataBaseAdapter db;
HashMap<String, List<String>> listDataChild;
ExpandableListView login, android, ios, testing, java, dotNet, os, hr, others;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_admin);
toolbar = (Toolbar) findViewById(R.id.appBar);
toolbar.setTitle(" Admin Screen");
toolbar.setTitleTextColor(Color.WHITE);
login = (ExpandableListView) findViewById(R.id.expandableListViewLogin);
titleText = new ArrayList<>();
titleText.add("User Id Authentication");
titleText.add("Android Posts Authentication");
titleText.add("iOS Posts Authentication");
titleText.add("Testing Posts Authentication");
titleText.add("Java Posts Authentication");
titleText.add("Dot Net Posts Authentication");
titleText.add("OS Posts Authentication");
titleText.add("HR Posts Authentication");
titleText.add("Others Posts Authentication");
SQLiteDataBaseAdapter db = new SQLiteDataBaseAdapter(this);
List<String> childDataLogin = db.getLoginList();
List<String> childDataAndroid = db.getAndroidList();
List<String> childDataIos = db.getIosList();
List<String> childDataTesting = db.getTestingList();
List<String> childDataJava = db.getJavaList();
List<String> childDataDotNet = db.getDotNetList();
List<String> childDataOs = db.getOSList();
List<String> childDataHr = db.getHRList();
List<String> childDataOthers = db.getOthersList();
listDataChild = new HashMap<>();
listDataChild.put(titleText.get(0), childDataLogin); // Header, Child data
listDataChild.put(titleText.get(1), childDataAndroid);
listDataChild.put(titleText.get(2), childDataIos);
listDataChild.put(titleText.get(3), childDataTesting);
listDataChild.put(titleText.get(4), childDataJava);
listDataChild.put(titleText.get(5), childDataDotNet);
listDataChild.put(titleText.get(6), childDataOs);
listDataChild.put(titleText.get(7), childDataHr);
listDataChild.put(titleText.get(8), childDataOthers);
listAdapter = new MyExpandableListAdapter(this, titleText, listDataChild);
login.setAdapter(listAdapter);
// Listview on child click listener
login.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
@Override
public boolean onChildClick(ExpandableListView parent, View v,
int groupPosition, int childPosition, long id) {
Toast.makeText(
getApplicationContext(),
titleText.get(groupPosition)
+ " : "
+ listDataChild.get(
titleText.get(groupPosition)).get(
childPosition), Toast.LENGTH_SHORT)
.show();
return true;
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_admin, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
Layout of child:
<?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="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/lblListItem"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="17sp"
android:paddingTop="5dp"
android:paddingBottom="5dp"
android:paddingLeft="? android:attr/expandableListPreferredChildPaddingLeft" />
</LinearLayout>
Adapter Code:
public class MyExpandableListAdapter extends BaseExpandableListAdapter {
private Context _context;
private List<String> _listDataHeader; // header titles
// child data in format of header title, child title
private HashMap<String, List<String>> _listDataChild;
public MyExpandableListAdapter(Context context, List<String> listDataHeader, HashMap<String, List<String>> listChildData) {
this._context = context;
this._listDataHeader = listDataHeader;
this._listDataChild = listChildData;
}
@Override
public int getGroupCount() {
return this._listDataHeader.size();
}
@Override
public int getChildrenCount(int groupPosition) {
return this._listDataChild.get(this._listDataHeader.get(groupPosition))
.size();
}
@Override
public Object getGroup(int groupPosition) {
return this._listDataHeader.get(groupPosition);
}
@Override
public Object getChild(int groupPosition, int childPosititon) {
return this._listDataChild.get(this._listDataHeader.get(groupPosition))
.get(childPosititon);
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
String headerTitle = (String) getGroup(groupPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_group, null);
}
TextView lblListHeader = (TextView) convertView
.findViewById(R.id.expandableListHeader);
lblListHeader.setTypeface(null, Typeface.BOLD);
lblListHeader.setText(headerTitle);
return convertView;
}
@Override
public View getChildView(int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
final String childText = (String) getChild(groupPosition, childPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_item, null);
}
TextView txtListChild = (TextView) convertView
.findViewById(R.id.lblListItem);
txtListChild.setText(childText);
return convertView;
}
@Override
public boolean isChildSelectable(int i, int i1) {
return false;
}
}
解决方案
Be sure to override the isChildSelectable method of your expandable list adapter and return true, like so:
public class MyExpandableListAdapter extends BaseExpandableListAdapter {
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
...
}
Or
android:focusable="false"
within the CheckBox section of your expandlist_child_item.xml file.
I hope that this helps somebody.
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