How to refresh adapter and deselect all items each time when user clicks on multispinner? - android-spinner

Question

I want to refresh the getview() of baseadapter each time when user click on multispinner. Also wants to deselect all the selected checkbox.
Anybody please help.
Blockquote
Below is my multispinner java class
public class MultiSpinnerSearch extends Spinner implements OnCancelListener {
private static final String TAG = MultiSpinnerSearch.class.getSimpleName();
private List<KeyPairBoolData> items;
private String defaultText = "";
private String spinnerTitle = "";
private SpinnerListener listener;
private int limit = 0;
private int selected = 0;
private LimitExceedListener limitListener;
MyAdapter adapter;
public static AlertDialog.Builder builder;
public static AlertDialog ad;
public MultiSpinnerSearch(Context context) {
super(context);
}
public MultiSpinnerSearch(Context arg0, AttributeSet arg1) {
super(arg0, arg1);
TypedArray a = arg0.obtainStyledAttributes(arg1, R.styleable.MultiSpinnerSearch);
limit = a.getIndexCount();
for (int i = 0; i < limit; ++i) {
int attr = a.getIndex(i);
if (attr == R.styleable.MultiSpinnerSearch_hintText) {
spinnerTitle = a.getString(attr);
defaultText = spinnerTitle;
break;
}
}
Log.i(TAG, "spinnerTitle: " + spinnerTitle);
a.recycle();
}
public MultiSpinnerSearch(Context arg0, AttributeSet arg1, int arg2) {
super(arg0, arg1, arg2);
}
public void setLimit(int limit, LimitExceedListener listener) {
this.limit = limit;
this.limitListener = listener;
}
public List<KeyPairBoolData> getSelectedItems() {
List<KeyPairBoolData> selectedItems = new ArrayList<>();
for (KeyPairBoolData item : items) {
if (item.isSelected()) {
selectedItems.add(item);
}
}
return selectedItems;
}
public List<Long> getSelectedIds() {
List<Long> selectedItemsIds = new ArrayList<>();
for (KeyPairBoolData item : items) {
if (item.isSelected()) {
selectedItemsIds.add(item.getId());
}
}
return selectedItemsIds;
}
#Override
public void onCancel(DialogInterface dialog) {
// refresh text on spinner
StringBuilder spinnerBuffer = new StringBuilder();
for (int i = 0; i < items.size(); i++) {
if (items.get(i).isSelected()) {
spinnerBuffer.append(items.get(i).getName());
spinnerBuffer.append(", ");
}
}
String spinnerText = spinnerBuffer.toString();
if (spinnerText.length() > 2)
spinnerText = defaultText;
else
spinnerText = defaultText;
ArrayAdapter<String> adapterSpinner = new ArrayAdapter<>(getContext(), R.layout.textview_for_spinner, new String[]{spinnerText});
setAdapter(adapterSpinner);
if (adapter != null)
adapter.notifyDataSetChanged();
listener.onItemsSelected(items);
}
#Override
public boolean performClick() {
builder = new AlertDialog.Builder(new ContextThemeWrapper(getContext(), R.style.Material_App_Dialog));
builder.setTitle(spinnerTitle);
final LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View view = inflater.inflate(R.layout.alert_dialog_listview_search, null);
builder.setView(view);
final ListView listView = (ListView) view.findViewById(R.id.alertSearchListView);
listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
listView.setFastScrollEnabled(false);
adapter = new MyAdapter(getContext(), items);
listView.setAdapter(adapter);
final TextView emptyText = (TextView) view.findViewById(R.id.empty);
listView.setEmptyView(emptyText);
final EditText editText = (EditText) view.findViewById(R.id.alertSearchEditText);
editText.addTextChangedListener(new TextWatcher() {
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
adapter.getFilter().filter(s.toString());
}
#Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
#Override
public void afterTextChanged(Editable s) {
}
});
builder.setPositiveButton("Done", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
Log.i(TAG, " ITEMS : " + items.size());
dialog.cancel();
}
});
builder.setOnCancelListener(this);
ad = builder.show();
return true;
}
public void setItems(List<KeyPairBoolData> items, int position, SpinnerListener listener) {
this.items = items;
this.listener = listener;
StringBuilder spinnerBuffer = new StringBuilder();
for (int i = 0; i < items.size(); i++) {
if (items.get(i).isSelected()) {
spinnerBuffer.append(items.get(i).getName());
spinnerBuffer.append(", ");
}
}
if (spinnerBuffer.length() > 2)
defaultText = spinnerBuffer.toString().substring(0, spinnerBuffer.toString().length() - 2);
ArrayAdapter<String> adapterSpinner = new ArrayAdapter<>(getContext(), R.layout.textview_for_spinner, new String[]{defaultText});
setAdapter(adapterSpinner);
if (position != -1) {
items.get(position).setSelected(true);
//listener.onItemsSelected(items);
onCancel(null);
}
}
public interface LimitExceedListener {
void onLimitListener(KeyPairBoolData data);
}
//Adapter Class
public class MyAdapter extends BaseAdapter implements Filterable {
List<KeyPairBoolData> arrayList;
List<KeyPairBoolData> mOriginalValues; // Original Values
LayoutInflater inflater;
public MyAdapter(Context context, List<KeyPairBoolData> arrayList) {
this.arrayList = arrayList;
inflater = LayoutInflater.from(context);
}
#Override
public int getCount() {
return arrayList.size();
}
#Override
public Object getItem(int position) {
return position;
}
#Override
public long getItemId(int position) {
return position;
}
private class ViewHolder {
TextView textView;
CheckBox checkBox;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
Log.i(TAG, "getView() enter");
final ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView = inflater.inflate(R.layout.item_listview_multiple, parent, false);
holder.textView = (TextView) convertView.findViewById(R.id.alertTextView);
holder.checkBox = (CheckBox) convertView.findViewById(R.id.alertCheckbox);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
final int backgroundColor = (position % 2 == 0) ? R.color.list_background : R.color.list_background;
convertView.setBackgroundColor(ContextCompat.getColor(getContext(), backgroundColor));
if (position==0)
{
holder.textView.setTextColor(Color.BLACK);
}
if (position==3)
{
holder.textView.setTextColor(Color.GREEN);
convertView.setBackgroundColor(ContextCompat.getColor(getContext(), R.color.list_selected));
}
final KeyPairBoolData data = arrayList.get(position);
holder.textView.setText(data.getName());
holder.textView.setTypeface(null, Typeface.NORMAL);
holder.checkBox.setChecked(data.isSelected());
convertView.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if (data.isSelected()) { // unselect
selected--;
} else if (selected == limit) { // select with limit
if (limitListener != null)
limitListener.onLimitListener(data);
return;
} else { // selected
selected++;
}
final ViewHolder temp = (ViewHolder) v.getTag();
temp.checkBox.setChecked(!temp.checkBox.isChecked());
data.setSelected(!data.isSelected());
Log.i(TAG, "On Click Selected Item : " + data.getName() + " : " + data.isSelected());
}
});
holder.checkBox.setTag(holder);
return convertView;
}
#SuppressLint("DefaultLocale")
#Override
public Filter getFilter() {
return new Filter() {
#SuppressWarnings("unchecked")
#Override
protected void publishResults(CharSequence constraint, FilterResults results) {
arrayList = (List<KeyPairBoolData>) results.values; // has the filtered values
notifyDataSetChanged(); // notifies the data with new filtered values
}
#Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults results = new FilterResults(); // Holds the results of a filtering operation in values
List<KeyPairBoolData> FilteredArrList = new ArrayList<>();
if (mOriginalValues == null) {
mOriginalValues = new ArrayList<>(arrayList); // saves the original data in mOriginalValues
}
/********
*
* If constraint(CharSequence that is received) is null returns the mOriginalValues(Original) values
* else does the Filtering and returns FilteredArrList(Filtered)
*
********/
if (constraint == null || constraint.length() == 0) {
// set the Original result to return
results.count = mOriginalValues.size();
results.values = mOriginalValues;
} else {
constraint = constraint.toString().toLowerCase();
for (int i = 0; i < mOriginalValues.size(); i++) {
Log.i(TAG, "Filter : " + mOriginalValues.get(i).getName() + " -> " + mOriginalValues.get(i).isSelected());
String data = mOriginalValues.get(i).getName();
if (data.toLowerCase().contains(constraint.toString())) {
FilteredArrList.add(mOriginalValues.get(i));
}
}
// set the Filtered result to return
results.count = FilteredArrList.size();
results.values = FilteredArrList;
}
return results;
}
};
}
}
}
And from my main activity
MultiSpinnerSearch searchSpinner = (MultiSpinnerSearch) findViewById(R.id.searchMultiSpinner);
searchSpinner.setItems(listArray, -1, new SpinnerListener() {
#Override
public void onItemsSelected(List<KeyPairBoolData> items) {
for (int i = 0; i < items.size(); i++) {
if (items.get(i).isSelected()) {
Log.i("TAG", i + " : " + items.get(i).getName() + " : " + items.get(i).isSelected());
FlashMessage(i + " : " + items.get(i).getName() + " : " + items.get(i).isSelected());
if (GroupName.equals(""))
{
GroupName=GroupName+items.get(i).getName();
Group_stuid=Group_stuid+student_idlist[i+1];
}
else
{
GroupName=GroupName+","+items.get(i).getName();
Group_stuid=Group_stuid+"#"+student_idlist[i+1];
}
}
}
FlashMessage("grp name : "+GroupName);
FlashMessage("grp id : "+Group_stuid);
Audiofilename=appfunct.checkfile(eventType,acdses_sct,class_sct,category_sct,subject_sct,test_sct,Group_stuid,GroupName);
outfolder=appfunct.outfldr();
Group_stuid=Group_stuid.replaceAll("/","-");
File create_stuid=new File(outfolder.toString()+"/"+Group_stuid);
if(!create_stuid.exists()) {
create_stuid.mkdirs();
}
FlashMessage(""+GroupFoldername);
Group_listFiles=appfunct.showlistfiles(GroupFoldername);
if (Group_listFiles != null)
{
final CustomGroupFolder_ListDispaly adapter1 = new CustomGroupFolder_ListDispaly(Group_recording.this,R.layout.group_item_listview,Group_listFiles);
group_listview.setAdapter(adapter1);
}
GroupName="";
Group_stuid="";
selected_students=appfunct.getSelectedNamesGroup(GroupFoldername);
}
});
FlashMessage("out : grp id "+Group_stuid);
searchSpinner.setLimit(2, new MultiSpinnerSearch.LimitExceedListener() {
#Override
public void onLimitListener(KeyPairBoolData data) {
Toast.makeText(getApplicationContext(),
"Limit exceed ", Toast.LENGTH_LONG).show();
}
});

Answer 1

apply this to your adapter adapter.notifyDataSetChanged();