Develop Reference

Listview not updating based on value on Array Adapter

I call the method below to update my listview
ListView list = (ListView) listView.findViewById(R.id.plan_list);
itemsList = sortAndAddSections(getItems_search(name));
ListAdapter adapter = new ListAdapter(getActivity(), itemsList);
list.setAdapter(adapter);
but that code is associated with a value that changes and also this is the other code
private ArrayList<plan_model> getItems_search(String param_cusname) {
Cursor data = myDb.get_search_plan(pattern_email, param_name);
int i = 0;
while (data.moveToNext()) {
String date = data.getString(3);
String remarks = data.getString(4);
items.add(new plan_model(cusname, remarks);
}
return items;
}
and this is my sorter
private ArrayList sortAndAddSections(ArrayList<plan_model> itemList) {
Collections.sort(itemList);
plan_model sectionCell;
tempList.clear();
tmpHeaderPositions.clear();
String header = "";
int addedRow = 0;
int bgColor = R.color.alt_gray;
for (int i = 0; i < itemList.size(); i++) {
String remarks = itemList.get(i).getRemarks();
String date = itemList.get(i).getDate();
if (!(header.equals(itemList.get(i).getDate()))) {
sectionCell = new plan_model(remarks, date);
sectionCell.setToSectionHeader();
tmpHeaderPositions.add(i + addedRow);
addedRow++;
tempList.add(sectionCell);
header = itemList.get(i).getDate();
bgColor = R.color.alt_gray;
}
sectionCell = itemList.get(i);
sectionCell.setBgColor(bgColor);
tempList.add(sectionCell);
if (bgColor == R.color.alt_gray) bgColor = R.color.alt_white;
else bgColor = R.color.alt_gray;
}
tmpHeaderPositions.add(tempList.size());
for (int i = 0; i < tmpHeaderPositions.size() - 1; i++) {
sectionCell = tempList.get(tmpHeaderPositions.get(i));
sectionCell.setDate(sectionCell.getDate() + " (" +
(tmpHeaderPositions.get(i + 1) - tmpHeaderPositions.get(i) - 1) + ")");
}
return tempList;
}
my question is the value name changes but my listview is not how can I update my listview? because i need to update it based on search parameter

If your itemList is being updated properly, you don't need to create another instance of the adapter, just use notifyDataSetChanged():
private void createList() {
ListView list = (ListView) listView.findViewById(R.id.plan_list);
itemsList = sortAndAddSections(getItems_search(name));
adapter = new ListAdapter(getActivity(), itemsList);
list.setAdapter(adapter);
}
private void updateList() {
sortAndAddSections(getItems_search(name)); // Update itemList without re-assign its value, otherwise the adapter will loose reference
adapter.notifyDataSetChanged()
}

In getItems_search() add this line at the beginning:
items.clear();
Every time the value of name changes you have to do the following:
itemsList.clear();
itemsList = sortAndAddSections(getItems_search(name));
list.setAdapter(new ListAdapter(getActivity(), itemsList));

How to add data in array on button click?

int size = mcq.size();
String arr[] = null;
int i;
{
for (i = 0; i < size; i++) {
if (op1.isPressed()) {
arr[i] = tv1.getText().toString();
// Log.e("Array",arr[i]);
} else if (op2.isPressed()) {
arr[i] = tv2.getText().toString();
//Log.e("Array",arr[i]);
} else if (op3.isPressed()) {
arr[i] = tv3.getText().toString();
// Log.e("Array",arr[i]);
} else if (op4.isPressed()) {
arr[i] = tv4.getText().toString();
//Log.e("Array",arr[i]);
}
I am trying to store the data in an array when the button is pressed,but it always shows null.And when the for loop is over I want to display my array.

here , Arrays in Java have a size so u cannot do like this. Instead of this
use list,
ArrayList<String> arr = new ArrayList<String>();
Inorder to do using String array :
String[] arr = new String[SIZEDEFNE HERE];
For ur answer :
ArrayList<String> arr = new ArrayList<String>();
int i;
{
for (i = 0; i < size; i++) {
if (op1.isPressed()) {
arr.add(tv1.getText().toString());
} else if (op2.isPressed()) {
arr.add(tv2.getText().toString());
} else if (op3.isPressed()) {
arr.add(tv3.getText().toString());
} else if (op4.isPressed()) {
arr.add(tv4.getText().toString());
}
Retrive value using
String s = arr.get(0);

This is because your string array is null. Declare it with the size as
String[] arr = new String[size];

Try Array List. use the following code in your main java
final ArrayList<String> list = new ArrayList<String>();
Button button= (Button) findViewById(R.id.buttonId);
final EditText editText = (EditText) findViewById(R.id.editTextId)
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
list.add(editText.getText().toString());
}
});

To avoid duplication in arraylist .You can use arraylist for faster then String array
ArrayList<String> list = new ArrayList<String>();
list.add("Krishna");
list.add("Krishna");
list.add("Kishan");
list.add("Krishn");
list.add("Aryan");
list.add("Harm");
System.out.println("List"+list);
HashSet hs = new HashSet();
hs.addAll(list);
list.clear();
list.addAll(hs);

Issue with android spinners - Loading distinct values in spinners

I'm using two Spinners to show the items I'm getting from the json response. I have 2 problems right now. When u check my logcat u can see there are items repeating (Right side list, u can see so many pan). I want to have 1 item only once in my Spinner. I want to use something similar to distinct we use in sql databases.
My second problem is,
Select pan in the 1 spinner then 2nd spinner should contain items related to pan. (select pan in 1st spinner and 2nd should display only Pan large, pan medium and personal pan)
#Override
public void onTaskCompleted(JSONArray responseJson) {
try {
List<String> crust = new ArrayList<String>();
List<String> description = new ArrayList<String>();
List<String> extraDescription = new ArrayList<String>();
for (int i = 0; i < responseJson.length(); ++i) {
JSONObject object = responseJson.getJSONObject(i);
if ((object.getString("MainCategoryID")).equals("1")
&& (object.getString("SubCategoryID")).equals("1")) {
JSONArray subMenuArray = object
.getJSONArray("SubMenuEntity");
for (int j = 0; j < subMenuArray.length(); ++j) {
JSONObject subMenuObject = subMenuArray
.getJSONObject(j);
Log.i("Crust", subMenuObject.getString("Crust"));
crust.add(subMenuObject.getString("Crust"));
Log.i("Description",
subMenuObject.getString("Description"));
description.add(subMenuObject.getString("Description"));
JSONArray extraItemEntityArray = subMenuObject
.getJSONArray("ExtraItemEntity");
}
}
crustSP = (Spinner) findViewById(R.id.sp_crust);
ArrayAdapter<String> dataAdapterCru = new ArrayAdapter<String>(
this, android.R.layout.simple_spinner_item, crust);
dataAdapterCru
.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
crustSP.setAdapter(dataAdapterCru);
sizeSP = (Spinner) findViewById(R.id.sp_pizza_size);
ArrayAdapter<String> dataAdapterDes = new ArrayAdapter<String>(
this, android.R.layout.simple_spinner_item, description);
dataAdapterDes
.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
sizeSP.setAdapter(dataAdapterDes);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
Output of this

Call this method to get distinct descriptions and then set the adapter using the return value of this function...
public static ArrayList<String> removeDuplicatesFromList(ArrayList<String> descriptions)
{
ArrayList<String> tempList = new ArrayList<String>();
for(String desc : descriptions)
{
if(!tempList.contains(desc))
{
tempList.add(desc);
}
}
descriptions = tempList;
tempList = null;
return descriptions;
}
For instance
description = Utils.removeDuplicatesFromList(description);
ArrayAdapter<String> dataAdapterDes = new ArrayAdapter<String>(
this, android.R.layout.simple_spinner_item, description);
NOTE:
I would suggest you make a new class call it Utils.java and place the above method inside it and then call it i have mentioned above.
Like this...
import java.util.ArrayList;
public class Utils
{
private Utils()
{
//Its constructor should not exist.Hence this.
}
public static ArrayList<String> removeDuplicatesFromList(ArrayList<String> descriptions)
{
ArrayList<String> tempList = new ArrayList<String>();
for(String desc : descriptions)
{
if(!tempList.contains(desc))
{
tempList.add(desc);
}
}
descriptions = tempList;
tempList = null;
return descriptions;
}
}
I hope it helps.

Convert array string in to list? ADD ALL section error

EQName list calling from the service
JSONArray EQResponseArray = new JSONArray(EQSpecifCompanrison);
int EQResponseSize = EQResponseArray.length();
String[] EQName = new String[EQResponseSize];
for(int i = 0; i< EQResponseSize; i++)
{
JSONObject EQResponseObject = EQResponseArray.optJSONObject(i);
int EQ_ID = EQResponseObject.optInt("EquipmentStatusId");
EQID[i] = EQ_ID;
String EQ_Name = EQResponseObject.optString("EquipmentStatusDescription");
EQName[i] = EQ_Name;
int EQ_PlantID = EQResponseObject.optInt("equipmentParentStatusId");
EQPlantID[i] = EQ_PlantID;
}
I have problem in AddALL section. I think problem in to convert how it will be? Planet constructer takes list items but my list have array list.
ArrayList<Planet> planetList = new ArrayList<Planet>();
Object[] mStringArray = planetList.toArray();
planetList.addAll(EQName);
listAdapter = new PlanetArrayAdapter(getActivity(), planetList);
SpecificList.setAdapter( listAdapter );

Android: Use WebView at child in SimpleExpandableListAdapter

Below is Simple declaration in this a child and parent is being build with dynamic list value.With relevant code as createGroupList() and createChildList(). I am able to manipulate with TextView but one of field is my dynamic image from getting to JSON not is being load in WebView.
expListAdapter = new SimpleExpandableListAdapter(
this, createGroupList(), // Creating group List.
R.layout.group_row,
new String[] { "Group Item" },
new int[] { R.id.`enter code here`row_name },
createChildList(), // Creating Child List.
R.layout.child_row,
new String[] { "Sub Item0", "Sub Item1", "Sub Item2", "Sub Item3" },
new int[] { R.id.grpChildName, R.id.grpChildAddress, R.id.grpChildPhoneNo, R.id.childImage }
);
setListAdapter(expListAdapter);
private List createGroupList() {
String header = "";
int headerSize = 0;
ArrayList result = new ArrayList();
for (int i = 0; i < dynamicList.size(); i++) {
HashMap m = new HashMap();
String taxiCompanyData[] = dynamicList.get(i);
if (header != taxiCompanyData[3]) {
m.put("Group Item", taxiCompanyData[3]);
header = taxiCompanyData[3];
headerList[headerSize] = header;
headerSize++;
result.add(m);
counter++;
}
}
return (List) result;
}
Above is Group creating and
private List createChildList() {
ArrayList result = new ArrayList();
Log.i("Info ", "headerList.length" + headerList.length);
for (int i = 0; i < headerList.length; i++) {
final ArrayList secList = new ArrayList();
System.out.println("dynamic list size is in main"
+ dynamicList.size());
webView = (WebView) findViewById(R.id.childImage);
for (int j = 0; j < dynamicList.size(); j++) {
String taxiCompanyData[] = dynamicList.get(j);
if (taxiCompanyData[3].equalsIgnoreCase(headerList[i])) {
final HashMap child = new HashMap();
child.put("Sub Item0", taxiCompanyData[0]);
child.put("Sub Item1", taxiCompanyData[1]);
child.put("Sub Item2", taxiCompanyData[2]);
// child.put("Sub Item3", taxiCompanyData[4]);
Thread th = new Thread(){
#Override
public void run() {
webView.loadUrl("https://lh5.googleusercontent.com/-u8heQyD_4y4/T5VMu-Zc6wI/AAAAAAAi71s/EP32a3D-fc0/s90/Corsino");
secList.add(child);
};
};
th.start();
}
}
result.add(secList);
}
return (List)result;
}
I am unable to load WebUI. Please help anyone.