Develop Reference

How do I add items to a listView (for duplicates increase quantity) and view in following activity?

I have an a gridView that has items, each item has a name and quantity. When I click the item in the gridView, I would like to add the item and the quantity to a dynamic list view that is in the same activity. If I click on the item a several times, the items quantity in the dynamic listView should be increased (no duplicate items are allowed.) This is my current gridView, I have removed the code that adds and a previous listView that failed and I am having it just toast for now:
public class GridviewAdapter extends BaseAdapter
{
private ArrayList<String> listItem;
private ArrayList<Integer> listPicture;
private Activity activity;
public GridviewAdapter(Activity activity, ArrayList<String> listItem, ArrayList<Integer> listPicture) {
super();
this.listItem = listItem;
this.listPicture = listPicture;
this.activity = activity;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return listItem.size();
}
#Override
public String getItem(int position) {
// TODO Auto-generated method stub
return listItem.get(position);
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
public static class ViewHolder
{
public ImageView itemPicture;
public TextView itemName;
public TextView itemPrice;
public TextView itemStock;
public TextView itemAvailability;
}
#Override
public View getView(int position, View convertView, ViewGroup
parent) {
// TODO Auto-generated method stub
ViewHolder view;
LayoutInflater inflator = activity.getLayoutInflater();
if(convertView==null)
{
view = new ViewHolder();
convertView = inflator.inflate(R.layout.item_grid_row,
null);
view.itemName = (TextView)
convertView.findViewById(R.id.itemName);
view.itemPrice = (TextView)
convertView.findViewById(R.id.itemPrice);
view.itemStock = (TextView)
convertView.findViewById(R.id.itemStock);
view.itemAvailability = (TextView)
convertView.findViewById(R.id.itemAvailability);
view.itemPicture = (ImageView)
convertView.findViewById(R.id.itemPicture);
convertView.setTag(view);
}
else
{
view = (ViewHolder) convertView.getTag();
}
view.itemName.setText(listItem.get(position));
// view.itemPicture.setImageDrawable(listItem.get(position));
return convertView;
}
}
this is the code for the checkout fragment where the gridView is clicked.
public class CheckoutFragment extends Fragment {
private CheckoutViewModel checkoutViewModel;
private EditText editText1;
private GridviewAdapter mAdapter;
private ArrayList<String> listItem;
private ArrayList<Integer> listPicture;
private GridView gridView;
DBHelper db;
LinearLayout layout_total, layout_grid;
private Button sum;
public View onCreateView(#NonNull LayoutInflater inflater,
ViewGroup container, Bundle
savedInstanceState) {
View root = inflater.inflate(R.layout.fragment_checkout,
container, false);
db = new DBHelper(getActivity());
Display display =
getActivity().getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int width = size.x;
int height = size.y;
editText1 = (EditText)root.findViewById(R.id.editText1);
editText1.setHeight(height/12);
editText1.setShowSoftInputOnFocus(false);
editText1.setFocusable(false);
editText1.setTextColor(Color.parseColor("#FFFFFF"));
editText1.setHintTextColor(Color.parseColor("#FFFFFF"));
editText1.getBackground().setColorFilter(Color.parseColor("#008577"),
PorterDuff.Mode.SRC_ATOP);
editText1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent cart = new Intent(getActivity(),
CartActivity.class);
startActivity(cart);
}
});
prepareList();
// prepared arraylist and passed it to the Adapter class
mAdapter = new GridviewAdapter(getActivity(),db.getAll(),
listPicture);
// Set custom adapter to gridview
gridView = (GridView)root.findViewById(R.id.gridView1);
gridView.setAdapter(mAdapter);
// Implement On Item click listener
gridView.setOnItemClickListener(new
AdapterView.OnItemClickListener()
{
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int
position,
long arg3) {
//this is where the grid is clicked and items added to dynamic listView
Toast.makeText(getActivity(),
mAdapter.getItem(position), Toast.LENGTH_SHORT).show();
}
});
return root;
}
public void prepareList() {
// listItem = new ArrayList<String>();
db = new DBHelper(getActivity());
List<Item> listItem = new ArrayList<>();
listItem = db.getAllItems(db.ITEMS_TABLE_NAME);
}
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
}
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.main, menu);
}
public boolean onOptionsItemSelected(MenuItem item) {
super.onOptionsItemSelected(item);
switch(item.getItemId()) {
case R.id.action_add_customer:
//startActivity(getActivity(),
NewCustomerActivity.class);
Intent newCustomer = new Intent(getActivity(),
NewCustomerActivity.class);
startActivity(newCustomer);
return true;
/* case R.id.action_add_customer:
return true;*/
default:
return super.onOptionsItemSelected(item);
}
}
}

You need to explain the situation a bit better. For now i assume your problem is that the items are duplicating the second list instead of appending the count. For this there is no
one line solution. What you need to do is once an item is selected in the grid, search if it exists in the second list. In that case update the quantity, otherwise add it to the list. Since your second list is based on a Table , you have to execute 2 queries. One to identify if the item already exists (Select Query) and other to change the value (Insert or Update Query). If i misunderstood please correct me so that i can help you better.
Why don't you return the model class in your GridView getItem(..) method instead of 'String' it should work like this
public class GridviewAdapter extends BaseAdapter
{
ArrayList<GridModel> gridItems;
//Constructor
public GridviewAdapter(Activity activity, ArrayList<GridModel> gridItems) {
super();
this.gridItems = gridItems;
this.activity = activity;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return griditems.size();
}
#Override
public GridModel getItem(int position) {
// TODO Auto-generated method stub
return gridItems.get(position);
}
//...add your getView...
}
//GridModel Should be Like So..
class GridModel {
public String itemPicture;
public String itemName;
public String itemPrice;
public String itemStock;
public String itemAvailability;
//or use private variables with getter-setter methods
}

Fatal Exception while removing item from custom arrayadapter android

I have a customlistadapter and i am setting it for my listview. Now I want to remove an item of it. I did something below in the longclick event but it returns and FATAL exception.
projectItemArrayAdapter is the object of my customAdapter class. item is the position of the list.
Object item1 = projectItemArrayAdapter.getItem(item);
projectItemArrayAdapter.remove(item1);
projectItemArrayAdapter.notifyDataSetChanged();
LogCat
09-01 16:07:39.564 3506-3506/com.example.anuradha.tblogin
E/AndroidRuntime﹕ FATAL EXCEPTION: main Process:
com.example.anuradha.tblogin, PID: 3506
java.lang.UnsupportedOperationException at
java.util.AbstractList.remove(AbstractList.java:638) at
java.util.AbstractList$SimpleListIterator.remove(AbstractList.java:75)
at java.util.AbstractCollection.remove(AbstractCollection.java:229)
ProjectAdapter class
public class ProjectAdapter extends ArrayAdapter {
private final Context context;
private final String[] values;
private final String[] titles;
private LayoutInflater inflater;
public ProjectAdapter(Context activity,String[] values,String[] titles)
{
super(activity,R.layout.activity_project_item,values);
//inflater = activity.getWindow().getLayoutInflater();
this.context = activity;
this.values = values;
this.titles = titles;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
//return inflater.inflate(R.layout.activity_project_item,parent,false);
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View rowView = inflater.inflate(R.layout.activity_project_item, parent, false);
TextView project = (TextView) rowView.findViewById(R.id.projectName);
TextView title = (TextView) rowView.findViewById(R.id.projectTitle);
project.setText(values[position]);
title.setText(titles[position]);
if (position%2!=1)
{
String myHexColor = "#2d07101c";
//project.setBackgroundColor(Color.parseColor(myHexColor));
rowView.setBackgroundColor(Color.parseColor(myHexColor));
}
return rowView;
}
#Override
public void remove(Object object) {
super.remove(object);
}
}
ProjectList class - I assign arrayadapter to my listview
public class ProjectList extends Activity {
private ListView projectListView;
private String[] stringArray ;
private ArrayAdapter projectItemArrayAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_project_list);
//Set custom ActionBar Color
ActionBar actionBar = getActionBar();
actionBar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#D6D6D6")));
String[] projectName =
new String[] { "Demo", "Test", "Anu", "QDMS"};
String[] projTitle =
new String[] { "Demo Title", "Test Title", "Anu Title", "QDMS Title"};
projectItemArrayAdapter = new ProjectAdapter(this,projectName,projTitle);
projectListView = (ListView) findViewById(R.id.projectList);
projectListView.setAdapter(projectItemArrayAdapter);
this.showActionBar();
projectListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent intent = new Intent(ProjectList.this,MailActiivty.class);
startActivity(intent);
}
});
projectListView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
#Override
public boolean onItemLongClick(AdapterView<?> parent, View view,
int position, long arg3) {
final int item = position;
AlertDialog.Builder alert = new AlertDialog.Builder(
ProjectList.this);
alert.setTitle("Delete");
alert.setMessage("Do you want delete this item?");
alert.setPositiveButton("Yes",new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
Object item1 = projectItemArrayAdapter.getItemId(item);
projectItemArrayAdapter.remove(item1);
projectItemArrayAdapter.notifyDataSetChanged();
}
});
alert.setNegativeButton("CANCEL",new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
dialog.dismiss();
}
});
alert.show();
return true;
}
});
}
//method to assign custom actionbar
private void showActionBar() {
LayoutInflater inflator = (LayoutInflater) this
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = inflator.inflate(R.layout.cust_actionbar, null);
ActionBar actionBar = getActionBar();
actionBar.setDisplayHomeAsUpEnabled(false);
actionBar.setDisplayShowHomeEnabled (false);
actionBar.setDisplayShowCustomEnabled(true);
actionBar.setDisplayShowTitleEnabled(false);
actionBar.setCustomView(v);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu_project_list, menu);
return super.onCreateOptionsMenu(menu);
}
#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);
}
}

Use ArrayList instead of an array. Change the adapter constructor to this.
public ProjectAdapter(Context activity,List<String> values,String[] titles)
{
super(activity,R.layout.activity_project_item,values);
//inflater = activity.getWindow().getLayoutInflater();
this.context = activity;
//change the type of values from String[] to List<String>
this.values = values;
this.titles = titles;
}
Then change implementation of remove method. It should look like this
#Override
public void remove(Object object)
{
//remove the call to super.
values.remove(object);
}
Then change this line
String[] projectName = new String[] { "Demo", "Test", "Anu", "QDMS"};
Create an array list and add these elements to it and then pass the list to the adapter constructor.
Let me know if it works. Cheers :)

Searchable List View

So i'm trying to make a searchable list view using a custom array adapter.
I finally got the search working but the results are not exactly accurate.
Its actually a hit and miss kinda thing e.g Searching for Drupal gets me Google Plus, you knw what I saying?
So here's my adapter
public class CustomListAdapter extends ArrayAdapter<String> implements Filterable {
private final Activity context;
private final String[] web;
private final String[] imageIdUrl;
public CustomListAdapter(Activity context, String[] web, String[] imageId) {
super(context, R.layout.list_single, web);
this.context = context;
this.web = web;
this.imageIdUrl = imageId;
}
#Override
public View getView(int position, View view, ViewGroup parent) {
LayoutInflater inflater = context.getLayoutInflater();
//find row view
View rowView= inflater.inflate(R.layout.list_single, null, true);
//find text
TextView txtTitle = (TextView) rowView.findViewById(R.id.txt);
//find image
ImageView imageView = (ImageView) rowView.findViewById(R.id.img);
//set text
txtTitle.setText(web[position]);
//set image traditional
//imageView.setImageResource(imageIdUrl[position]);
//set image with picasso
Picasso.with(this.context).load(imageIdUrl[position]).into(imageView);
//return row
return rowView;
}
}
And heres my Main Activity class
public class MainActivity extends ActionBarActivity {
ListView list;
EditText editsearch;
String[] web = {
"Google Plus",
"Twitter",
"Windows",
"Bing",
"Itunes",
"Wordpress",
"Drupal"} ;
String[] imageIdUrl = {
"http://www.h3dwallpapers.com/wp-content/uploads/2015/05/Google_Logo_04.jpg",
"http://www.h3dwallpapers.com/wp-content/uploads/2015/05/Google_Logo_04.jpg" ,
"http://www.h3dwallpapers.com/wp-content/uploads/2015/05/Google_Logo_04.jpg",
"http://www.h3dwallpapers.com/wp-content/uploads/2015/05/Google_Logo_04.jpg",
"http://www.h3dwallpapers.com/wp-content/uploads/2015/05/Google_Logo_04.jpg",
"http://www.h3dwallpapers.com/wp-content/uploads/2015/05/Google_Logo_04.jpg",
"http://www.h3dwallpapers.com/wp-content/uploads/2015/05/Google_Logo_04.jpg"};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final CustomListAdapter adapter = new CustomListAdapter(MainActivity.this, web, imageIdUrl);
list=(ListView)findViewById(R.id.list);
list.setAdapter(adapter);
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(MainActivity.this, "You Clicked at " + web[+position], Toast.LENGTH_SHORT).show();
}
});
// Locate the EditText in listview_main.xml
editsearch = (EditText) findViewById(R.id.editText);
editsearch.addTextChangedListener(new TextWatcher() {
#Override
public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
String text = editsearch.getText().toString().toLowerCase(Locale.getDefault());
adapter.getFilter().filter(text);
}
#Override
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
// TODO Auto-generated method stub
}
#Override
public void afterTextChanged(Editable arg0) {
// TODO Auto-generated method stub
}
});
}
#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_main, 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);
}
}
I'll be grately thankful for any help. This is proving to be a major headache

Change the code in onTextChanged() method to afterTextChanged() method as below:
#Override
public void afterTextChanged(Editable s) {
String str=s.toString();
getSearchItems(str);
}
In getSearchItems use the filter properly. I used other way to filter as,
public void getSearchItems(String searchText){
List<Employee> searchList=new ArrayList<Employee>();
List<Employee> employeeList=getEmployeeList();
if(employeeList2!=null){
for(Employee e:employeeList){
if(e.name.toLowerCase().contains(searchText.toLowerCase())){
searchList.add(e);
}
}
}
adapter.refresh(searchList);
}
Then In adapter use another method refresh() as below:
public void refresh(List<Employee> employeeList){
this.employeeList=employeeList;
notifyDataSetChanged();
}
Actually I used Employee class which contains his name and address, and I made search using employee name. So u change the above code which suits your search.

Android delete selected item using contextual actionbar

So far, I have managed to follow this tutorial and run it successfully. But what I wanna do now is to actually delete selected items on my listview. This is the code I'm using:
private String[] data = {"One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine","Ten"};
private SelectionAdapter mAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mAdapter = new SelectionAdapter(this,
R.layout.row_list_item, R.id.textView1, data);
setListAdapter(mAdapter);
getListView().setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);
getListView().setMultiChoiceModeListener(new MultiChoiceModeListener() {
private int nr = 0;
#Override
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
// TODO Auto-generated method stub
return false;
}
#Override
public void onDestroyActionMode(ActionMode mode) {
// TODO Auto-generated method stub
mAdapter.clearSelection();
}
#Override
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
// TODO Auto-generated method stub
nr = 0;
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.contextual_menu, menu);
return true;
}
#Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
// TODO Auto-generated method stub
switch (item.getItemId()) {
case R.id.item_delete:
nr = 0;
mAdapter.clearSelection();
mode.finish();
}
return true;
}
#Override
public void onItemCheckedStateChanged(ActionMode mode, int position,
long id, boolean checked) {
// TODO Auto-generated method stub
if (checked) {
nr++;
mAdapter.setNewSelection(position, checked);
} else {
nr--;
mAdapter.removeSelection(position);
}
mode.setTitle(nr + " selected");
}
});
getListView().setOnItemLongClickListener(new OnItemLongClickListener() {
#Override
public boolean onItemLongClick(AdapterView<?> arg0, View arg1,
int position, long arg3) {
// TODO Auto-generated method stub
getListView().setItemChecked(position, !mAdapter.isPositionChecked(position));
return false;
}
});
}
private class SelectionAdapter extends ArrayAdapter<String> {
private HashMap<Integer, Boolean> mSelection = new HashMap<Integer, Boolean>();
public SelectionAdapter(Context context, int resource,
int textViewResourceId, String[] objects) {
super(context, resource, textViewResourceId, objects);
}
public void setNewSelection(int position, boolean value) {
mSelection.put(position, value);
notifyDataSetChanged();
}
public boolean isPositionChecked(int position) {
Boolean result = mSelection.get(position);
return result == null ? false : result;
}
public Set<Integer> getCurrentCheckedPosition() {
return mSelection.keySet();
}
public void removeSelection(int position) {
mSelection.remove(position);
notifyDataSetChanged();
}
public void clearSelection() {
mSelection = new HashMap<Integer, Boolean>();
notifyDataSetChanged();
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = super.getView(position, convertView, parent);//let the adapter handle setting up the row views
v.setBackgroundColor(getResources().getColor(android.R.color.background_light)); //default color
if (mSelection.get(position) != null) {
v.setBackgroundColor(getResources().getColor(android.R.color.holo_blue_light));// this is a selected position so make it red
}
return v;
}
}
Question is how do I delete the selected item/s? I can't figure it out and if anyone of you knows this and can help, I'd gladly appreciate it. Thanks.

In your code instead of using string [] data you can use ArrayList<String> data since it is dynamically sized array where the object is actually removed and the list (array) size is adjusted accordingly. With this change you can use following method.
#Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
List<Integer> keyList = new ArrayList<Integer>(noteAdptr.getCurrentCheckedPosition());
Collections.sort(keyList, new Comparator<Integer>() {
#Override
public int compare(Integer lhs, Integer rhs) {
return lhs.compareTo(rhs);
}
});
Collections.reverse(keyList);
switch (item.getItemId()) {
case R.id.item_delete:
nr = 0;
for (Integer i:keyList){
Log.e("", "items selected is : "+i);
data.remove((int)i);
}
mAdapter .notifyDataSetChanged();
mAdapter.clearSelection();
mode.finish();
}
return true;
}
Hope this helps

You can set a OnLongClickListener on the items in the ListView that just gets the item that is long pressed.
Afterwards you can reference/remove that object in your OnActionItemClicked.

I am not sure if you have already solved your problem, but here is what worked for me:
Create a private (or public) variable in your class: private int selectedPosition;
In your onItemLongClick() method (as far as I see that's the one, where you are selecting an item), put:
selectedPosition = position;
in OnActionItemClicked() you can get your adapter and do this:
MyAdapter adapter = (MyAdapter) this.getAdapter();
adapter.remove(adapter.getItem(selectedPosition);
adapter.notifyDataSetChanged();
That way you passed the position of the selected item to your adapter.
Hope that helps!

You have to code the functionality yourself: in the onActionItemClicked, you have to code the logic that will erase selected items from your ArrayList.
Don't forget to call notifyDatasetChanged() on your adapter after that... ;-)

Searching listview with custom ArrayAdapter

I have a listview that has a custom adapter, and I was trying to make it searchable using an Action Item. When I click the search icon in the action bar, the edit text comes up, but when I enter text and click "done" on the keyboard, nothing happens.
Here is the main class:
public class ItemId extends SherlockListActivity {
EditText editsearch;
ArrayAdapter<String> adapter;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Context ctx = getApplication();
Resources res = ctx.getResources();
String[] options = res.getStringArray(R.array.item_ids);
String[] ids = res.getStringArray(R.array.item_names);
TypedArray icons = res.obtainTypedArray(R.array.item_images);
adapter = new ItemIDAdapter(ctx, R.layout.idslistitem, ids, options, icons);
setListAdapter(adapter );
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Get the options menu view from menu.xml in menu folder
getSupportMenuInflater().inflate(R.menu.items_menu, menu);
// Locate the EditText in menu.xml
editsearch = (EditText) menu.findItem(R.id.menu_search).getActionView();
// Capture Text in EditText
editsearch.addTextChangedListener(textWatcher);
// Show the search menu item in menu.xml
MenuItem menuSearch = menu.findItem(R.id.menu_search);
menuSearch.setOnActionExpandListener(new OnActionExpandListener() {
// Menu Action Collapse
#Override
public boolean onMenuItemActionCollapse(MenuItem item) {
// Empty EditText to remove text filtering
editsearch.setText("");
editsearch.clearFocus();
return true;
}
// Menu Action Expand
#Override
public boolean onMenuItemActionExpand(MenuItem item) {
// Focus on EditText
editsearch.requestFocus();
// Force the keyboard to show on EditText focus
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
return true;
}
});
// Show the settings menu item in menu.xml
MenuItem menuSettings = menu.findItem(R.id.home);
// Capture menu item clicks
menuSettings.setOnMenuItemClickListener(new OnMenuItemClickListener() {
#Override
public boolean onMenuItemClick(MenuItem item) {
Intent intent2 = new Intent(ItemId.this, Home.class);
startActivity(intent2);
return true;
}
});
return true;
}
// EditText TextWatcher
private TextWatcher textWatcher = new TextWatcher() {
#Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
String text = editsearch.getText().toString()
.toLowerCase(Locale.getDefault());
adapter.getFilter().filter(text);
};
#Override
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
// TODO Auto-generated method stub
}
#Override
public void onTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
// TODO Auto-generated method stub
}
};
}
And here is the Adapter class:
public class ItemIDAdapter extends ArrayAdapter<String> implements Filterable {
public LayoutInflater mInflater;
public String[] mStrings;
public String[] mIds;
public TypedArray mIcons;
public int mViewResourceId;
public ItemIDAdapter(Context ctx, int viewResourceId,
String[] strings, String[] ids, TypedArray icons) {
super(ctx, viewResourceId, strings);
mInflater = (LayoutInflater)ctx.getSystemService(
Context.LAYOUT_INFLATER_SERVICE);
mStrings = strings;
mIds = ids;
mIcons = icons;
mViewResourceId = viewResourceId;
}
#Override
public int getCount() {
return mStrings.length;
}
#Override
public String getItem(int position) {
return mStrings[position];
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
convertView = mInflater.inflate(mViewResourceId, null);
ImageView iv = (ImageView)convertView.findViewById(R.id.option_icon);
iv.setImageDrawable(mIcons.getDrawable(position));
TextView tv = (TextView)convertView.findViewById(R.id.option_text);
tv.setText(mStrings[position]);
TextView tv1 = (TextView)convertView.findViewById(R.id.itemids);
tv1.setText(mIds[position]);
return convertView;
}
}
If anyone has any idea as to why nothing happens when I search, or knows how to fix it, it'd be greatly appreciated. Thanks!!

You need to implement a custom filter. Have a look at this post here someone else has had a similar problem which he solved: https://stackoverflow.com/a/8258457/2045570

Below is mine code, which is working perfectly:-
public class ExpenditureAdapter extends ArrayAdapter<Expenditure> implements Filterable {
ArrayList<Expenditure> listArray;
ArrayList<Expenditure> filteredlistArray;
private Filter mFilter;
public ExpenditureAdapter(#NonNull Context context, ArrayList<Expenditure> list) {
super(context,0, list);
listArray=list;
filteredlistArray=list;
}
#Override
public int getCount() {
return filteredlistArray.size(); // total number of elements in the list
}
public void add(Expenditure object) {
listArray.add(object);
this.notifyDataSetChanged();
}
public Filter getFilter() {
if (mFilter == null) {
mFilter = new CustomFilter();
}
return mFilter;
}
#Override
public Expenditure getItem(int i) {
return filteredlistArray.get(i); // single item in the list
}
#Override
public void notifyDataSetChanged() {
super.notifyDataSetChanged();
}
#Override
public long getItemId(int i) {
return i; // index number
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
// Get the data item for this position
Expenditure expenditure = getItem(position);
// Check if an existing view is being reused, otherwise inflate the view
if (convertView == null) {
convertView = LayoutInflater.from(getContext()).inflate(R.layout.listexpenditure, parent, false);
}
// Lookup view for data population
TextView ExpId = (TextView) convertView.findViewById(R.id.ExpId);
TextView ExDate = (TextView) convertView.findViewById(R.id.ExDate);
TextView ExpAmt = (TextView) convertView.findViewById(R.id.ExpAmt);
TextView ExpDetail = (TextView) convertView.findViewById(R.id.ExpDetail);
// Populate the data into the template view using the data object
ExpId.setText(expenditure.ExpId);
SimpleDateFormat dateFormat = new SimpleDateFormat("dd-MM-yyyy");
String dateTime = dateFormat.format(expenditure.ExpDate);
ExDate.setText(dateTime);
ExpAmt.setText(String.valueOf(expenditure.ExpAmt));
ExpDetail.setText(expenditure.ExpDetail);
return convertView;
}
private class CustomFilter extends Filter {
#Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults results = new FilterResults();
if(constraint == null || constraint.length() == 0) {
ArrayList<Expenditure> list = new ArrayList<Expenditure>(listArray);
results.values = list;
results.count = list.size();
} else {
ArrayList<Expenditure> newValues = new ArrayList<Expenditure>();
for(int i = 0; i < listArray.size(); i++) {
Expenditure e_item = listArray.get(i);
if(e_item.ExpDetail.contains(constraint)) {
newValues.add(e_item);
}
}
results.values = newValues;
results.count = newValues.size();
}
return results;
}
#SuppressWarnings("unchecked")
#Override
protected void publishResults(CharSequence constraint,
FilterResults results) {
filteredlistArray = (ArrayList<Expenditure>) results.values;
notifyDataSetChanged();
}
}
and use it in your code as below:-
private TextWatcher textWatcher = new TextWatcher() {
#Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
String text = txtSearch.getText().toString()
.toLowerCase(Locale.getDefault());
adapter.getFilter().filter(text);
};
#Override
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
// TODO Auto-generated method stub
}
#Override
public void onTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
// TODO Auto-generated method stub
}
};