Custom ExpandableListView is not working

Custom ExpandableListView is not working - android

I created custom ExpandableListView but it does not expand when I click on it.
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<ExpandableListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/exp_lv"
></ExpandableListView>
group_items.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="match_parent"
android:orientation="horizontal" >
<TextView
android:layout_width="270sp"
android:layout_height="30sp"
android:layout_marginLeft="30sp"
android:id="#+id/title"
android:textIsSelectable="true"
/>
<CheckBox
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/chk"
/>
child_items.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="match_parent"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/child"
android:textIsSelectable="true"
/>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>
<TextView
android:layout_width="120sp"
android:layout_height="wrap_content"
android:textIsSelectable="true"
android:id="#+id/dd"
android:textStyle="bold"
/>
<TextView
android:layout_width="200sp"
android:layout_height="wrap_content"
android:layout_toRightOf="#+id/dd"
android:textIsSelectable="true"
android:id="#+id/date"
/>
</RelativeLayout>
group.java
package com.example.expandablelistview;
import java.util.ArrayList;
public class group {
private String Name;
private boolean isSelected;
private ArrayList<child> Items;
public String getName() {
return Name;
}
public void setName(String name) {
Name = name;
}
public boolean isSelected() {
return isSelected;
}
public void setSelected(boolean isSelected) {
this.isSelected = isSelected;
}
public ArrayList<child> getItems() {
return Items;
}
public void setItems(ArrayList<child> items) {
Items = items;
}
}
child.java
package com.example.expandablelistview;
public class child {
String child_title;
String dd;
String date;
public String getChild_title() {
return child_title;
}
public void setChild_title(String child_title) {
this.child_title = child_title;
}
public String getDd() {
return dd;
}
public void setDd(String dd) {
this.dd = dd;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
}
MyBaseAdapter.java
package com.example.expandablelistview;
import java.util.ArrayList;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.CheckBox;
import android.widget.TextView;
public class MyBaseAdapter extends BaseExpandableListAdapter{
Context context;
ArrayList<group> group_al;
public MyBaseAdapter(Context context,ArrayList<group> group_al) {
this.context=context;
this.group_al=group_al;
}
#Override
public Object getChild(int groupPosition, int childPosition) {
ArrayList<child> chList = group_al.get(groupPosition).getItems();
return chList.get(childPosition);
}
#Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
#Override
public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView,
ViewGroup parent) {
child ch = (child) getChild(groupPosition, childPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) context
.getSystemService(context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.child_items, null);
}
TextView child = (TextView) convertView.findViewById(R.id.child);
TextView dd = (TextView) convertView.findViewById(R.id.dd);
TextView date= (TextView) convertView.findViewById(R.id.date);
child.setText(ch.getChild_title().toString());
dd.setText(ch.getChild_title().toString());
date.setText(ch.getChild_title().toString());
return convertView;
}
#Override
public int getChildrenCount(int groupPosition) {
ArrayList<child> chList = group_al.get(groupPosition).getItems();
return chList.size();
}
#Override
public Object getGroup(int groupPosition) {
return group_al.get(groupPosition);
}
#Override
public int getGroupCount() {
return group_al.size();
}
#Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
#Override
public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
group gr = (group) getGroup(groupPosition);
long group_id = getGroupId(groupPosition);
if (convertView == null) {
LayoutInflater inf = (LayoutInflater) context
.getSystemService(context.LAYOUT_INFLATER_SERVICE);
convertView = inf.inflate(R.layout.group_items, null);
}
TextView title = (TextView) convertView.findViewById(R.id.title);
title.setText(gr.getName());
CheckBox chk=(CheckBox) convertView.findViewById(R.id.chk);
chk.setFocusable(false);
return convertView;
}
#Override
public boolean hasStableIds() {
return true;
}
#Override
public boolean isChildSelectable(int arg0, int arg1) {
return false;
}
}
MainActivity.java
package com.example.expandablelistview;
import java.util.ArrayList;
import android.os.Bundle;
import android.app.Activity;
import android.widget.ExpandableListView;
public class MainActivity extends Activity {
private MyBaseAdapter ExpAdapter;
private ArrayList<group> ExpListItems;
private ExpandableListView ExpandList;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ExpandList = (ExpandableListView) findViewById(R.id.exp_lv);
ExpListItems = SetStandardGroups();
ExpAdapter = new MyBaseAdapter(MainActivity.this, ExpListItems);
ExpandList.setAdapter(ExpAdapter);
}
private ArrayList<group> SetStandardGroups() {
ArrayList<group> list = new ArrayList<group>();
group gru= new group();
gru.setName("Tax 1");
ArrayList<child> ch_list= new ArrayList<child>();
child ch = new child();
ch.setChild_title("Information of tax 1");
ch.setDd("Due Date:");
ch.setDate("22/02/2016");
ch_list.add(ch);
gru.setItems(ch_list);
list.add(gru);
return list;
}
}
When I run the application I can see the first row of ExpandableListView i.e. Tax1 with CheckBox beside it but when I click on the row then it does not expanded.
Please guys help me.
Thanks in advance.

please add:
android:focusable="false"
android:focusableInTouchMode="false"
to your checkbox
also remove from textView:
android:textIsSelectable="true"

**
<?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="horizontal" >
<TextView
android:layout_width="270sp"
android:layout_height="30sp"
android:layout_marginLeft="30sp"
android:id="#+id/title"
****android:textIsSelectable="true"**// remove this line in group layout**
/>
<CheckBox
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/chk"
/>
**

In MybaseAdapter please change method like this
#Override
public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView,
ViewGroup parent) {
child ch = (child) getChild(groupPosition, childPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) context
.getSystemService(context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.child_items, null);
}
TextView child = (TextView) convertView.findViewById(R.id.child);
TextView dd = (TextView) convertView.findViewById(R.id.dd);
TextView date= (TextView) convertView.findViewById(R.id.date);
child.setText(ch.getChild_title().toString());
dd.setText(ch.getDd().toString());
date.setText(ch.getDate().toString());
return convertView;
}

When I add
android:focusable="false"
android:focusableInTouchMode="false"
to your checkbox and
android:textIsSelectable="true"
to TextView then It works great
but now I want to store the checked CheckBox value (only group_title and value of Date TextView ) to the database so, where I add clickListener on Checkbox

Related

ExpandableListView with ViewPager as child-elements executes getChildView twice

I want to create an expandable list with viewpagers as subviews. The problem is now that with my code it calls the getChildView method twice and thus creates my viewpager twice.
I also tried it with the TextView (which is the sample code I posted here for convenience) to simplify the code but the same issue arose.
My best guess is it has something to do with the height property of the layouts but no matter how i changed it, I couldn't resolve the issue.
Please help. I am totally lost. I used a tutorial for this code and I seem to be the only who has that issue judging from the youtube comment section. (https://www.youtube.com/watch?v=jZxZIFnJ9jE)
(If you need any other part of the code please let me know.)
delete.xml file looks like this
<?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:id="#+id/sukahead">
<TextView
android:id="#+id/suka"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="suka"
android:paddingLeft="?android:attr/expandableListPreferredChildPaddingLeft"
android:paddingStart="?android:attr/expandableListPreferredChildPaddingLeft"
/>
</LinearLayout>
sublist.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="wrap_content"
android:padding="8dp" android:background="#color/white"
android:id="#+id/sublist">
<TextView
android:id="#+id/dict_entry"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingLeft="?android:attr/expandableListPreferredChildPaddingLeft"
android:paddingStart="?android:attr/expandableListPreferredChildPaddingLeft"
android:textSize="16sp"
android:textColor="#color/colorAccent"
android:text="test"
/>
</LinearLayout>
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
android:background="#color/colorPrimary">
<EditText
android:id="#+id/search_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/search_hint"
android:layout_margin="15dp"
android:padding="5dp"
app:layout_constraintTop_toTopOf="parent"
android:background="#color/white"
android:adjustViewBounds="true"
android:maxLines="1"
android:inputType="text"
android:onClick="lookup_word"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/search_bar"
android:orientation="horizontal">
<ExpandableListView
android:id="#+id/search_result_list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:divider="#333"
android:dividerHeight="1dp"
android:background="#color/white"
android:layout_margin="15dp"/>
</LinearLayout>
</RelativeLayout>
ExpandableListAdapter.java
package com.lunaticcoding.linguodict;
import android.content.Context;
import android.graphics.Typeface;
import android.support.v4.view.ViewPager;
import android.text.Layout;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.TextView;
import java.util.HashMap;
import java.util.List;
public class ExpendableListAdapter extends BaseExpandableListAdapter {
private Context context;
private List<String> data;
private HashMap<String, String[]> listHashMap;
private LayoutInflater inflater;
private String pageData[];
public ExpendableListAdapter(Context context, List<String> list, HashMap<String, String[]> hashMap) {
this.context = context;
this.data = list;
this.listHashMap = hashMap;
}
#Override
public int getGroupCount() {
return data.size();
}
#Override
public int getChildrenCount(int groupPosition) {
return listHashMap.get(data.get(groupPosition)).length;
}
#Override
public Object getGroup(int groupPosition) {
return data.get(groupPosition);
}
#Override
public Object getChild(int groupPosition, int childPosition) {
return listHashMap.get(data.get(groupPosition))[childPosition];
}
#Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
#Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
#Override
public boolean hasStableIds() {
return true;
}
#Override
public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
String headerTitle = (String) getGroup(groupPosition);
if(convertView == null) {
LayoutInflater inflater = (LayoutInflater) this.context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.sublist, null);
}
TextView textView = (TextView) convertView.findViewById(R.id.dict_entry);
textView.setText(data.get(groupPosition));
return convertView;
}
#Override
public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
final String childText = (String)getChild(groupPosition, childPosition);
if(convertView == null) {
LayoutInflater inflater = (LayoutInflater) this.context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.delete, null);
}
TextView textView = (TextView) convertView.findViewById(R.id.suka);
return convertView;
}
#Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
MainActivity (only OnCreate)
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
searchBar = (EditText) findViewById(R.id.search_bar);
searchResults = (ExpandableListView) findViewById(R.id.search_result_list);
list_results = new ArrayList<>();
examples_results = new HashMap<>();
list_results.add("test1");
list_results.add("test2");
list_results.add("test3");
String pageData1[] = new String[]{"si", "siiii"};
String pageData2[] = new String[]{"jifasfa", "sfasdfasiii"};
String pageData3[] = new String[]{"jifasfa", "sfasdfasiii"};
examples_results.put(list_results.get(0), pageData1);
examples_results.put(list_results.get(1), pageData2);
examples_results.put(list_results.get(2), pageData3);
searchResultsAdapter = new ExpendableListAdapter(this, list_results, examples_results);
searchResults.setAdapter(searchResultsAdapter);
lastExpandedPosition = -1;
searchResults.setOnGroupExpandListener(new ExpandableListView.OnGroupExpandListener() {
#Override
public void onGroupExpand(int groupPosition) {
if(lastExpandedPosition != -1 && (lastExpandedPosition != groupPosition)){
searchResults.collapseGroup(lastExpandedPosition);
}
lastExpandedPosition = groupPosition;
}
});
}

In the sub_list.xml the layout_height is "wrap_content". Change it to a fixed height (some dp) or match_parent and it will work.
Reason:
wrap_content has to calculate the height of the layout content it has to match thus reloading the layout afterwards -> creating the list more than once.

Losing focus when notifyDataSetChanged() is called in ExpandableListView

I have an ExpandableListView which contains 2 TextViews and an EditText for entering amount for each child and it allows inline edit.
I need to to change the amount value for the group instantly when one of its child's amount changed.
I have done that but the problem is that when I called the notifyDataSetChanged() method for showing the change in group I lost the focus from the current edittext. That is, if I changed the amount field in the first child of a group and then click on the amount field of the second child, the focus is still on the first child because of the notifyDataSetChanged().
How can I solve this?
My code is below.
ExpandableListAdapter.java:
package com.example.empandroid.view;
import java.text.DecimalFormat;
import java.util.HashMap;
import java.util.List;
import com.fort.empandroid.R;
import com.example.empandroid.model.Employee;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Context;
import android.graphics.Typeface;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnFocusChangeListener;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.BaseExpandableListAdapter;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class ExpandableListAdapter extends BaseExpandableListAdapter {
private final Context context;
private List<Employee> listDataHeader;
private HashMap<Integer, List<Employee>> listDataChild;
DecimalFormat df = new DecimalFormat("#.00");
int s;
Float value = 0.0f, change = 0.0f;
public ExpandableListAdapter(Context context, List<Employee> listDataHeader, HashMap<Integer, List<Employee>> listChildData) {
this.context = context;
this.listDataHeader = listDataHeader;
this.listDataChild = listChildData;
//this.context=mainContxt.getApplicationContext();
}
public static class ListHolder {
Employee expCoa;
TextView txtName;
TextView txtAmount;
TextView txtMonthTotal;
EditText edtAmount;
}
#Override
public int getGroupCount() {
return this.listDataHeader.size();
}
#Override
public int getChildrenCount(int groupPosition) {
int childcount = this.listDataChild.get(this.listDataHeader.get(groupPosition).getiD()).size();
return childcount;
}
#Override
public Employee getGroup(int groupPosition) {
return this.listDataHeader.get(groupPosition);
}
#Override
public Employee getChild(int groupPosition, int childPosition) {
return this.listDataChild.get(this.listDataHeader.get(groupPosition).getiD()).get(childPosition);
}
#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) {
df.setMinimumIntegerDigits(1);
ListHolder expHolder = new ListHolder();
expHolder.expCoa = getGroup(groupPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this.context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_group, null);
}
expHolder.txtName = (TextView) convertView.findViewById(R.id.txtAccount);
expHolder.txtAmount = (TextView) convertView.findViewById(R.id.txtAmount);
expHolder.txtMonthTotal = (TextView) convertView.findViewById(R.id.txtMonthTotal);
convertView.setTag(expHolder);
expHolder.txtName.setTypeface(null, Typeface.BOLD);
expHolder.txtAmount.setTypeface(null, Typeface.BOLD);
expHolder.txtMonthTotal.setTypeface(null, Typeface.BOLD);
setupItem(expHolder);
return convertView;
}
#Override
public View getChildView(final int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
df.setMinimumIntegerDigits(1);
final ListHolder expHolder = new ListHolder();
expHolder.expCoa = getChild(groupPosition, childPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this.context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_item, null);
}
expHolder.txtName = (TextView) convertView.findViewById(R.id.txtAccount);
expHolder.edtAmount = (EditText) convertView.findViewById(R.id.edtAmount);
expHolder.txtMonthTotal = (TextView) convertView.findViewById(R.id.txtMonthTotal);
convertView.setTag(expHolder);
setupChildItem(expHolder);
//expHolder.edtAmount.requestFocus();
AlertDialog.Builder builder = new AlertDialog.Builder(context);
final AlertDialog dialog = builder.create();
//AlertDialog.Builder alert = new AlertDialog.Builder(mainContxt);
expHolder.edtAmount.setOnFocusChangeListener(new OnFocusChangeListener() {
#Override
public void onFocusChange(View v, boolean hasFocus) {
if (!hasFocus) {
//dialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
onChange(v, groupPosition, childPosition, expHolder.expCoa);
} else {
//Toast.makeText(context, " else "+s, 68000).show();
onFocus(v);
}
}
});
return convertView;
}
private void onFocus(View v) {
final EditText Caption = (EditText) v;
value = Float.parseFloat(Caption.getText().toString());
Toast.makeText(context, "onFocus value " + value + " change " + change, 68000).show();
}
public void onChange(View views, int groupPosition, int childPosition, Employee expCoaChd) {
final int position = views.getId();
final EditText Caption = (EditText) views;
change = Float.parseFloat(Caption.getText().toString());
if (value != change) { //use database type for this loop condition
//perform change
ListHolder expHolders = new ListHolder();
expHolders.expCoa = getGroup(groupPosition);
expHolders.expCoa.setAmount(expHolders.expCoa.getAmount() - expCoaChd.getAmount() + change);
expCoaChd.setAmount(change);
notifyDataSetChanged();
//Toast.makeText(context, "onChange value "+value+" change "+change, 68000).show();
change = 0.0f;
value = 0.0f;
}
}
#Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
private void setupChildItem(ListHolder expHolder) {
expHolder.txtName.setText(expHolder.expCoa.getStrName());
if (expHolder.expCoa.getiD() == -998 || expHolder.expCoa.getiD() == -999) {
expHolder.edtAmount.setText("");
expHolder.txtMonthTotal.setText("");
} else {
expHolder.edtAmount.setText(df.format(expHolder.expCoa.getAmount()));
expHolder.txtMonthTotal.setText(df.format(expHolder.expCoa.getExpenseMTD()));
}
}
private void setupItem(ListHolder expHolder) {
expHolder.txtName.setText(expHolder.expCoa.getStrName());
if (expHolder.expCoa.getiD() == -998 || expHolder.expCoa.getiD() == -999) {
expHolder.txtAmount.setText("");
expHolder.txtMonthTotal.setText("");
} else {
expHolder.txtAmount.setText(df.format(expHolder.expCoa.getAmount()));
expHolder.txtMonthTotal.setText(df.format(expHolder.expCoa.getExpenseMTD()));
}
}
}
list_group.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="match_parent"
android:orientation="horizontal"
>
<TextView
android:id="#+id/txtAccount"
android:layout_width="0dp"
android:layout_height="50dp"
android:textSize="16sp"
android:gravity="center_vertical"
android:layout_weight="3"/>
<TextView
android:id="#+id/txtAmount"
android:layout_width="0dp"
android:layout_height="50dp"
android:layout_weight="1"
android:gravity="end"
android:textSize="15sp"
android:textAppearance="?android:attr/textAppearanceSmall"/>
<TextView
android:id="#+id/txtMonthTotal"
android:layout_width="0dp"
android:layout_height="50dp"
android:layout_weight="1"
android:gravity="end"
android:textSize="15sp"
android:textAppearance="?android:attr/textAppearanceSmall"/>
</LinearLayout>
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="match_parent"
android:orientation="horizontal"
>
<TextView
android:id="#+id/txtAccount"
android:layout_width="0dp"
android:layout_height="50dp"
android:textSize="15sp"
android:gravity="center_vertical"
android:layout_weight="3"/>
<EditText
android:id="#+id/edtAmount"
android:layout_width="0dp"
android:layout_height="50dp"
android:layout_weight="1"
android:gravity="end"
android:textSize="15sp"
android:textAppearance="?android:attr/textAppearanceSmall"/>
<TextView
android:id="#+id/txtMonthTotal"
android:layout_width="0dp"
android:layout_height="50dp"
android:layout_weight="1"
android:gravity="end"
android:textSize="15sp"
android:textAppearance="?android:attr/textAppearanceSmall"/>
</LinearLayout>

how to add function on child items in expandablelistview?

Good Day! i am new in android programming and java, so i did a copy paste of a source code in the internet then it worked but i have to do some edit for this.
i wanna ask how to add a function when i click on switch of every group that supposed to be on/off not to toast. i understand how to use onClickListener Somehow but i dont know where to put the function.
any answers or good tutorial link for this will be greatly appreciated THANK YOU!
MainActivity.java
package com.capstone.r.e.d.e_kit;
import java.util.ArrayList;
import android.app.ExpandableListActivity;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.widget.ExpandableListView;
public class MainActivity extends ExpandableListActivity{
private ArrayList<String> parentItems = new ArrayList<String>();
private ArrayList<Object> childItems = new ArrayList<Object>();
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// this is not really necessary as ExpandableListActivity contains an ExpandableList
//setContentView(R.layout.main);
ExpandableListView expandableList = getExpandableListView(); // you can use (ExpandableListView) findViewById(R.id.list)
expandableList.setDividerHeight(2);
expandableList.setGroupIndicator(null);
expandableList.setClickable(true);
setGroupParents();
setChildData();
MainActivityAdapter adapter = new MainActivityAdapter(parentItems, childItems);
adapter.setInflater((LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE), this);
expandableList.setAdapter(adapter);
expandableList.setOnChildClickListener(this);
}
public void setGroupParents() {
parentItems.add("Flash Light");
parentItems.add("Whistle");
parentItems.add("Infographics");
parentItems.add("Battery Saving Mode");
}
public void setChildData() {
// Flash Light
ArrayList<String> child = new ArrayList<String>();
child.add("Switch");
childItems.add(child);
// Whistle
child = new ArrayList<String>();
child.add("Switch");
childItems.add(child);
// Information
child = new ArrayList<String>();
child.add("Online News");
child.add("Do's and Dont's");
childItems.add(child);
// Battery Saving Mode
child = new ArrayList<String>();
child.add("Switch");
childItems.add(child);
}
}
MainActivityAdapter.java
package com.capstone.r.e.d.e_kit;
import java.util.ArrayList;
import android.app.Activity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.CheckedTextView;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivityAdapter extends BaseExpandableListAdapter {
private Activity activity;
private ArrayList<Object> childtems;
private LayoutInflater inflater;
private ArrayList<String> parentItems, child;
public MainActivityAdapter(ArrayList<String> parents, ArrayList<Object> childern) {
this.parentItems = parents;
this.childtems = childern;
}
public void setInflater(LayoutInflater inflater, Activity activity) {
this.inflater = inflater;
this.activity = activity;
}
#SuppressWarnings("unchecked")
#Override
public View getChildView(int groupPosition, final int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
child = (ArrayList<String>) childtems.get(groupPosition);
TextView textView = null;
if (convertView == null) {
convertView = inflater.inflate(R.layout.group, null);
}
textView = (TextView) convertView.findViewById(R.id.textView1);
textView.setText(child.get(childPosition));
convertView.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(activity, child.get(childPosition),
Toast.LENGTH_SHORT).show();
}
});
return convertView;
}
#Override
public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = inflater.inflate(R.layout.row, null);
}
((CheckedTextView) convertView).setText(parentItems.get(groupPosition));
((CheckedTextView) convertView).setChecked(isExpanded);
return convertView;
}
#Override
public Object getChild(int groupPosition, int childPosition) {
return null;
}
#Override
public long getChildId(int groupPosition, int childPosition) {
return 0;
}
#Override
public int getChildrenCount(int groupPosition) {
return ((ArrayList<String>) childtems.get(groupPosition)).size();
}
#Override
public Object getGroup(int groupPosition) {
return null;
}
#Override
public int getGroupCount() {
return parentItems.size();
}
#Override
public void onGroupCollapsed(int groupPosition) {
super.onGroupCollapsed(groupPosition);
}
#Override
public void onGroupExpanded(int groupPosition) {
super.onGroupExpanded(groupPosition);
}
#Override
public long getGroupId(int groupPosition) {
return 0;
}
#Override
public boolean hasStableIds() {
return false;
}
#Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return false;
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ExpandableListView
android:id="#+id/list"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:groupIndicator="#null" />
</LinearLayout>
row.xml
<CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="60dp"
android:layout_marginLeft="5dp"
android:gravity="center_vertical"
android:padding="10dp"
android:textColor="#FFFFFF"
android:textSize="15sp"
android:background="#339966"
/>
group.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="40dp"
android:background="#android:color/white"
android:clickable="true"
android:orientation="vertical"
android:paddingLeft="40dp"
tools:context=".MainActivity" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="39dp"
android:gravity="center_vertical">
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:textIsSelectable="true"
android:textColor="#000000"
android:textSize="14sp"
/>
</LinearLayout>
</LinearLayout>

Try to set setOnGroupClickListener:
adapter.setInflater((LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE), this);
expandableList.setAdapter(adapter);
expandableList.setOnChildClickListener(this);
expandableList.setOnGroupClickListener(this); //Implement inteface ExpandableListView.OnGroupClickListener
Documatation:
http://developer.android.com/reference/android/widget/ExpandableListView.html#setOnGroupClickListener(android.widget.ExpandableListView.OnGroupClickListener)
Tutorial:
http://www.vogella.com/tutorials/AndroidListView/article.html#expandablelistview

How to select only one CHECKBOX for EACH SECTION ITEM in LISTVIEW

I have a expandable list view with hardcoded child items for now. The child items are divided into two sections. There is also a checkbox associated with it. Current implementation selects all checkbox, how can i select only one CHECKBOX for EACH SECTION ITEM. You can either download my working code or get an idea from below figure.
Code :
MainActivity.java
package aexp.elistcbox;
import java.util.ArrayList;
import android.app.ExpandableListActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.ExpandableListView;
import android.widget.RadioButton;
public class MainActivity extends ExpandableListActivity
{
private static final String LOG_TAG = "ElistCBox2";
private ColorAdapter expListAdapter;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle icicle)
{
super.onCreate(icicle);
setContentView(R.layout.main);
ArrayList<String> groupNames = new ArrayList<String>();
groupNames.add("ABC");
groupNames.add("DEF");
groupNames.add("GHI");
ArrayList<ArrayList<Item>> colors = new ArrayList<ArrayList<Item>>();
ArrayList<Item> color = new ArrayList<Item>();
color = new ArrayList<Item>();
color.add(new SectionItem("Please select any one"));
color.add( new EntryItem( "ABC", false ) );
color.add( new EntryItem( "DEF", true ) );
color.add( new EntryItem( "GHI", true ));
color.add( new EntryItem( "JKL", false ));
color.add(new SectionItem("Please select any one"));
color.add( new EntryItem( "ABC", false ));
color.add( new EntryItem( "DEF", false ));
color.add( new EntryItem( "GHI", false ));
color.add( new EntryItem( "JKL", false ));
colors.add( color );
expListAdapter = new ColorAdapter( this,groupNames, colors );
setListAdapter( expListAdapter );
final Button button = (Button) findViewById(R.id.submitbutton);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Get data
}
});
}
public void onContentChanged () {
super.onContentChanged();
Log.d( LOG_TAG, "onContentChanged" );
}
public boolean onChildClick(
ExpandableListView parent,
View v,
int groupPosition,
int childPosition,
long id) {
Log.d( LOG_TAG, "onChildClick: "+childPosition );
RadioButton cb = (RadioButton)v.findViewById( R.id.radiobutton );
if( cb != null )
cb.toggle();
return false;
}
}
ColorAdapter.java
package aexp.elistcbox;
import java.util.ArrayList;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.CheckBox;
import android.widget.RadioButton;
import android.widget.TextView;
public class ColorAdapter extends BaseExpandableListAdapter {
private Context context;
private ArrayList<String> groups;
private ArrayList<ArrayList<Item>> colors;
private LayoutInflater inflater;
public ColorAdapter(Context context,
ArrayList<String> groups,
ArrayList<ArrayList<Item>> colors ) {
this.context = context;
this.groups = groups;
this.colors = colors;
inflater = LayoutInflater.from( context );
}
public Object getChild(int groupPosition, int childPosition) {
return colors.get( groupPosition ).get(childPosition );
}
public long getChildId(int groupPosition, int childPosition) {
return (long)( groupPosition*1024+childPosition ); // Max 1024 children per group
}
public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
View v = convertView;
Item c = (Item)getChild( groupPosition, childPosition );
/*if( color != null )
color.setText( c.getColor() );
CheckBox cb = (CheckBox)v.findViewById( R.id.check1 );
cb.setChecked( c.getState() );*/
if (c != null) {
if(c.isSection()){
SectionItem si = (SectionItem)c;
v = inflater.inflate(R.layout.list_item_section, parent,false);
final TextView sectionView = (TextView) v.findViewById(R.id.list_item_section_text);
sectionView.setText(si.getTitle());
} else {
EntryItem ei = (EntryItem) c;
v = inflater.inflate(R.layout.child_row, parent, false);
TextView color = (TextView) v.findViewById(R.id.childname);
if (color != null)
color.setText(ei.getColor());
RadioButton cb = (RadioButton) v.findViewById(R.id.radiobutton);
cb.setChecked(ei.getState());
}
}
return v;
}
public int getChildrenCount(int groupPosition) {
return colors.get( groupPosition ).size();
}
public Object getGroup(int groupPosition) {
return groups.get( groupPosition );
}
public int getGroupCount() {
return groups.size();
}
public long getGroupId(int groupPosition) {
return (long)( groupPosition*1024 ); // To be consistent with getChildId
}
public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
View v = null;
if( convertView != null )
v = convertView;
else
v = inflater.inflate(R.layout.group_row, parent, false);
String gt = (String)getGroup( groupPosition );
TextView colorGroup = (TextView)v.findViewById( R.id.childname );
if( gt != null )
colorGroup.setText( gt );
return v;
}
public boolean hasStableIds() {
return true;
}
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
public void onGroupCollapsed (int groupPosition) {}
public void onGroupExpanded(int groupPosition) {}
}
EntryItem.java
package aexp.elistcbox;
public class EntryItem implements Item {
public String color = null;
public boolean state = false;
public EntryItem( String color, boolean state ) {
this.color = color;
this.state = state;
}
public String getColor() {
return color;
}
public boolean getState() {
return state;
}
#Override
public boolean isSection() {
// TODO Auto-generated method stub
return false;
}
#Override
public boolean isItem() {
// TODO Auto-generated method stub
return true;
}
}
Item.java
package aexp.elistcbox;
public interface Item {
public boolean isSection();
public boolean isItem();
}
SectionItem.java
package aexp.elistcbox;
public class SectionItem implements Item{
private final String title;
public SectionItem(String title) {
this.title = title;
}
public String getTitle(){
return title;
}
#Override
public boolean isSection() {
return true;
}
#Override
public boolean isItem() {
// TODO Auto-generated method stub
return false;
}
}
child_row.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView android:id="#+id/childname"
android:paddingLeft="20px"
android:focusable="false"
android:textSize="19dp"
android:textStyle="italic"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<LinearLayout
android:layout_height="match_parent"
android:layout_width="fill_parent"
android:gravity="right">
<RadioButton
android:id="#+id/radiobutton"
android:focusable="false"
android:layout_marginRight="20dip"
android:layout_height="wrap_content"
android:layout_width="wrap_content" />
</LinearLayout>
</LinearLayout>
group_row.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="8dp"
android:background="#000000">
<TextView
android:id="#+id/childname"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingLeft="10dip"
android:textSize="17dp"
android:textColor="#f9f93d"/>
</LinearLayout>
list_item_section.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"
android:background="#e7ebee"
android:orientation="vertical">
<TextView
android:id="#+id/list_item_section_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.5"
android:gravity="center_vertical"
android:paddingTop="10dip"
android:paddingBottom="7dip"
android:paddingLeft="15dip"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#737577"
android:textSize="18sp" />
</LinearLayout>
main.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="match_parent"
android:background="#f4f4f4"
android:orientation="vertical" >
<TextView
android:id="#+id/question"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dip"
android:paddingLeft="10dp"
android:paddingStart="10dp"
android:text="Please select"
android:textColor="#000"
android:textSize="17dp" />
<ExpandableListView
android:id="#+id/android:list"
android:layout_marginTop="10dip"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:cacheColorHint="#00000000" />
<Button
android:id="#+id/submitbutton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Submit" />
</LinearLayout>

EditText inside ExpandableListView is not expanding the childs

I have created an ExpandableListView following this tutorial http://www.androidhive.info/2013/07/android-expandable-list-view-tutorial/ which is working fine. There have 2 TextView in the parent group. But when I am adding an EditText in parent group it's showing in the listview but after clicking on the parent it's not expanding. I assume it's due to the focus on EditText.
Please help to find a way to focus on parent item so that by clicking it expands and shows child items. On the other hand when I will try to write something in EditText it should focus on that without expanding the ListView.
Here is my code:
package com.sifb.icms.sit.application.adapter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import com.sifb.icms.sit.R;
import com.sifb.icms.sit.object.Object_CateringMenu;
import android.content.Context;
import android.graphics.Color;
import android.graphics.Typeface;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.EditText;
import android.widget.TextView;
public class ExpandableListAdapter_CateringMenu extends BaseExpandableListAdapter {
private Context _context;
private List<Object_CateringMenu> _listDataHeader; // header titles
// child data in format of header title, child title
private HashMap<String, String> _listDataChild;
public ExpandableListAdapter_CateringMenu(Context context, ArrayList<Object_CateringMenu> listDataHeader,
HashMap<String, String> listChildData) {
this._context = context;
this._listDataHeader = listDataHeader;
this._listDataChild = listChildData;
}
#Override
public Object getChild(int groupPosition, int childPosititon) {
return this._listDataChild.get(this._listDataHeader.get(groupPosition).getCategoryChoice());
}
#Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
#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_cateringmenu_description, null);
}
TextView txtListChild = (TextView) convertView
.findViewById(R.id.tvDescription);
txtListChild.setText(childText);
return convertView;
}
#Override
public int getChildrenCount(int groupPosition) {
return 1;
}
#Override
public Object getGroup(int groupPosition) {
return this._listDataHeader.get(groupPosition);
}
#Override
public int getGroupCount() {
return this._listDataHeader.size();
}
#Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
#Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
Object_CateringMenu objGroup = (Object_CateringMenu) getGroup(groupPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_cateringmenu, null);
}
TextView lblListHeaderCat = (TextView) convertView
.findViewById(R.id.tvCategoryChoice);
lblListHeaderCat.setTypeface(null, Typeface.BOLD);
lblListHeaderCat.setText(objGroup.getCategoryChoice());
TextView lblListHeaderRatio = (TextView) convertView
.findViewById(R.id.tvRatio);
lblListHeaderRatio.setTypeface(null, Typeface.BOLD);
lblListHeaderRatio.setText(objGroup.getRatio());
return convertView;
}
#Override
public boolean hasStableIds() {
return false;
}
#Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
Layout
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/svParent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:id="#+id/tvTitle"
style="#style/tvTitleText"
android:text="#string/cateringmenu_title" />
<include
android:id="#+id/include_cateringmenu_header"
layout="#layout/list_cateringmenu_header" />
<ExpandableListView
android:id="#+id/elvCateringMenu"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:groupIndicator="#android:color/transparent"
android:descendantFocusability="beforeDescendants"
android:layout_marginTop="10dp" />
</LinearLayout>
Parent ListView
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/rlParent"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="1" >
<TextView
android:id="#+id/tvCategoryChoice"
style="#style/tvCateringMenu"
android:layout_marginLeft="10dp"
android:layout_marginRight="20dp"
android:layout_weight="0.5" />
<TextView
android:id="#+id/tvRatio"
style="#style/tvCateringMenu"
android:layout_weight="0.2" />
<EditText
android:id="#+id/etMealUplift"
style="#style/etCateringMenuMealUplift"
android:layout_weight="0.3" />
</LinearLayout>

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

Custom ExpandableListView is not working - android

please add: android:focusable="false" android:focusableInTouchMode="false" to your checkbox also remove from textView: android:textIsSelectable="true"

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How to select only one CHECKBOX for EACH SECTION ITEM in LISTVIEW

EditText inside ExpandableListView is not expanding the childs

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