I want to know which childboxes are checked in my multiple HeaderList and saved its boolean values in textfile. Here is the code so far.
ExpandableListAdapter.java
@SuppressLint("UseSparseArrays")
public class ExpandableListAdapter extends BaseExpandableListAdapter {
// Define activity context
private Context mContext;
private HashMap<String, List<String>> listDataChild;
private List<String> listDataHeader;
// Hashmap for keeping track of our checkbox check states
private HashMap<Integer, boolean[]> mChildCheckStates;
private ChildViewHolder childViewHolder;
private GroupViewHolder groupViewHolder;
private String groupText;
private String childText;
/* Here's the constructor we'll use to pass in our calling
* activity's context, group items, and child items
*/
public ExpandableListAdapter(Context context,
List<String> listDataHeader, HashMap<String, List<String>> listDataChild) {
this.mContext = context;
this.listDataHeader = listDataHeader;
this.listDataChild = listDataChild;
// Initialize our hashmap containing our check states here
mChildCheckStates = new HashMap<Integer, boolean[]>();
}
@Override
public int getGroupCount() {
return listDataHeader.size();
}
/*
* This defaults to "public object getGroup" if you auto import the methods
* I always make a point to change it from "object" to whatever item
* I passed through the constructor
*/
@Override
public String getGroup(int groupPosition) {
return listDataHeader.get(groupPosition);
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
// I passed a text string into an activity holding a getter/setter
// which I passed in through "String".
// Here is where I call the getter to get that text
groupText = getGroup(groupPosition);
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) mContext
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.list_group, null);
// Initialize the GroupViewHolder defined at the bottom of this document
groupViewHolder = new GroupViewHolder();
groupViewHolder.mGroupText = (TextView) convertView.findViewById(R.id.lblListHeader);
convertView.setTag(groupViewHolder);
} else {
groupViewHolder = (GroupViewHolder) convertView.getTag();
}
groupViewHolder.mGroupText.setText(groupText);
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
return listDataChild.get(listDataHeader.get(groupPosition)).size();
}
/*
* This defaults to "public object getChild" if you auto import the methods
* I always make a point to change it from "object" to whatever item
* I passed through the constructor
*/
@Override
public String getChild(int groupPosition, int childPosition) {
return listDataChild.get(listDataHeader.get(groupPosition)).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) {
final int mGroupPosition = groupPosition;
final int mChildPosition = childPosition;
// I passed a text string into an activity holding a getter/setter
// which I passed in through "ExpListChildItems".
// Here is where I call the getter to get that text
childText = getChild(mGroupPosition, mChildPosition);
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) this.mContext
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.list_item, null);
childViewHolder = new ChildViewHolder();
childViewHolder.mChildText = (TextView) convertView
.findViewById(R.id.lblListItem);
childViewHolder.mCheckBox = (CheckBox) convertView
.findViewById(R.id.checkBox1);
convertView.setTag(R.layout.list_item, childViewHolder);
} else {
childViewHolder = (ChildViewHolder) convertView
.getTag(R.layout.list_item);
}
childViewHolder.mChildText.setText(childText);
/*
* You have to set the onCheckChangedListener to null
* before restoring check states because each call to
* "setChecked" is accompanied by a call to the
* onCheckChangedListener
*/
childViewHolder.mCheckBox.setOnCheckedChangeListener(null);
if (mChildCheckStates.containsKey(mGroupPosition)) {
/*
* if the hashmap mChildCheckStates<Integer, Boolean[]> contains
* the value of the parent view (group) of this child (aka, the key),
* then retrive the boolean array getChecked[]
*/
boolean getChecked[] = mChildCheckStates.get(mGroupPosition);
// set the check state of this position's checkbox based on the
// boolean value of getChecked[position]
childViewHolder.mCheckBox.setChecked(getChecked[mChildPosition]);
} else {
/*
* if the hashmap mChildCheckStates<Integer, Boolean[]> does not
* contain the value of the parent view (group) of this child (aka, the key),
* (aka, the key), then initialize getChecked[] as a new boolean array
* and set it's size to the total number of children associated with
* the parent group
*/
boolean getChecked[] = new boolean[getChildrenCount(mGroupPosition)];
// add getChecked[] to the mChildCheckStates hashmap using mGroupPosition as the key
mChildCheckStates.put(mGroupPosition, getChecked);
// set the check state of this position's checkbox based on the
// boolean value of getChecked[position]
childViewHolder.mCheckBox.setChecked(false);
}
childViewHolder.mCheckBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
if (isChecked) {
boolean getChecked[] = mChildCheckStates.get(mGroupPosition);
getChecked[mChildPosition] = isChecked;
mChildCheckStates.put(mGroupPosition, getChecked);
} else {
boolean getChecked[] = mChildCheckStates.get(mGroupPosition);
getChecked[mChildPosition] = isChecked;
mChildCheckStates.put(mGroupPosition, getChecked);
}
}
});
return convertView;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return false;
}
@Override
public boolean hasStableIds() {
return false;
}
public final class GroupViewHolder {
TextView mGroupText;
}
public final class ChildViewHolder {
TextView mChildText;
CheckBox mCheckBox;
}
MainActivity.java
public class MainActivity extends Activity {
ExpandableListAdapter listAdapter;
ExpandableListView expListView;
List<String> listDataHeader;
HashMap<String, List<String>> listDataChild;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// get the listview
expListView = (ExpandableListView) findViewById(R.id.lvExp);
// preparing list data
prepareListData();
listAdapter = new ExpandableListAdapter(this, listDataHeader, listDataChild);
// setting list adapter
expListView.setAdapter(listAdapter);
}
/*
* Preparing the list data
*/
private void prepareListData() {
listDataHeader = new ArrayList<String>();
listDataChild = new HashMap<String, List<String>>();
// Adding child data
listDataHeader.add("Personal Information");
listDataHeader.add("Contact Information");
// Adding child data
List<String> person = new ArrayList<String>();
person.add("Name");
person.add("Age");
person.add("Sex");
person.add("Height");
person.add("Weight");
person.add("Civil Status");
person.add("Place of Birth");
person.add("Date of Birth");
person.add("Nationality");
List<String> contact = new ArrayList<String>();
contact.add("Home Telephone Number");
contact.add("Office Telephone Number");
contact.add("Mobile Number");
contact.add("E-mail Address");
contact.add("Preferred Mailing Address");
listDataChild.put(listDataHeader.get(0), person); // Header, Child data
listDataChild.put(listDataHeader.get(1), contact);
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://ift.tt/nIICcg"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#f4f4f4"
android:orientation="vertical" >
<ExpandableListView
android:id="@+id/lvExp"
android:layout_width="match_parent"
android:layout_height="413dp"
android:layout_weight="0.67" />
<Button
android:id="@+id/button1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Generate PDF" />
</LinearLayout>
list_group.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://ift.tt/nIICcg"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="8dp"
android:background="#000000">
<TextView
android:id="@+id/lblListHeader"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingLeft="?android:attr/expandableListPreferredItemPaddingLeft"
android:textSize="17dp"
android:textColor="#f9f93d" />
</RelativeLayout>
list_item.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://ift.tt/nIICcg"
android:layout_width="match_parent"
android:layout_height="55dip"
android:orientation="vertical" >
<CheckBox
android:id="@+id/checkBox1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="32dp" />
<TextView
android:id="@+id/lblListItem"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/checkBox1"
android:layout_toRightOf="@+id/checkBox1"
android:paddingBottom="5dp"
android:paddingTop="5dp"
android:textSize="15dip" />
</RelativeLayout>
I want to have this kind of output in a textfile. That Personal Information = Yes means that the child checkbox under that HeaderList was checked if Personal Information = No means no child checkbox has been checked.
Any ideas will be highly appreciated :)
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