Develop Reference

How to set an adapter to custom spinner in a list?

I have a ListFragment's list that contains complex layouts as items, these items contain custom spinners (MaterialSpinner).
MaterialSpinner chooseSubjectSpinner = adapter.getItem(position).findViewById(R.id.myCustomSpinner);
chooseSubjectSpinner.setAdapter(spinnerAdapter);
I've tried getChildAt(position), adapter.getItem(postition), adapter.getView(position, null, parent), and list.get(position) with the added prefix of .findViewById(R.id.myview), but it doesn't work. (It either returns NullPointerException at runtime or doesn't do anything at all!).
EDIT:
if you guys want the whole fragment code:
private ArrayList<View> listViews = new ArrayList<>();
private ViewAdapter adapter;
private List<String> spinnerItems = new ArrayList<>();
private MaterialSpinnerAdapter<String> spinnerAdapter;
public FragmentUnitTest() {
// Required empty public constructor
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRetainInstance(true);
}
#Override
public View onCreateView(#NonNull LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_unit_test, container, false);
}
#Override
public void onViewCreated(#NonNull View view, Bundle savedInstanceState){
spinnerItems.add("Hey!");
spinnerItems.add("Hello!");
spinnerItems.add("Hi!");
spinnerAdapter = new MaterialSpinnerAdapter<>(getContext(), spinnerItems);
adapter = new ViewAdapter(listViews, view.getContext());
setListAdapter(adapter);
addView(R.layout.cardview_with_spinner);
MaterialSpinner spinner = adapter.getItem(0).findViewById(R.id.custom_spinner);
RLogger.e("FragmentUnitTest", spinner);
spinner.setAdapter(spinnerAdapter);
getListView().setOnItemClickListener(this);
}
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(getActivity(), "Clicked: " + position + " .", Toast.LENGTH_SHORT).show();
}

Create a Custom spinner like this:
public class PTCustomSpinner extends ArrayAdapter {
public PTCustomSpinner(Context context, int textViewResourceId) {
super(context, textViewResourceId);
// TODO Auto-generated constructor stub
}
#Override
public int getCount() {
// TODO Auto-generated method stub
int count = super.getCount();
return count>0 ? count-1 : count ;
}
Handle it like below // BELOW XML LAYOUT CONTAINS ONLY TEXTVIEW WITH ID "temp"
PTCustomSpinner spinnerArrayAdapter = new PTCustomSpinner(PTExceptionMainPage.this, R.layout.xml_with_only_textview);
spinnerArrayAdapter.addAll(team_array);
spinnerArrayAdapter.add("Pick Team");
spinnerTeam.setAdapter(spinnerArrayAdapter);
spinnerTeam.setSelection(spinnerArrayAdapter.getCount());
spinnerTeam.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
if (spinnerTeam.getSelectedItem() != "Pick Team") {
teamIdSelected = apiResponseTeam.get(i).getTeamID();
}
else if( spinnerTeam.getSelectedItem().equals("Pick Team"))
{
View v = spinnerTeam.getSelectedView();
((TextView) v).setTextColor(getResources().getColor(R.color.ash));
}
}
#Override
public void onNothingSelected(AdapterView<?> adapterView) {
}
});

List view with onItemClickListner was not working

OnItemClickListner is not working any one help me ,I want click list item each item goes to next activity
java class
public class Tab1 extends Fragment {
private ListAdapter mAdapter;
private ArrayList<String> listCountry;
private ArrayList<Integer> listFlag;
private ListView listview;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.tab_layout_one, container, false);
prepareList();
mAdapter = new ListAdapter(getActivity(), listCountry, listFlag);
//Missed code to here
listview = (ListView)rootView.findViewById(R.id.card_listView);
listview.setAdapter(mAdapter);
listview.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// TODO Auto-generated method stub
}
});
return rootView;
}
public void prepareList()
{
listCountry = new ArrayList<String>();
listCountry.add("India");
listCountry.add("USA");
listCountry.add("Canada");
listCountry.add("AUS");
listFlag = new ArrayList<Integer>();
listFlag.add(R.drawable.india);
listFlag.add(R.drawable.usa);
listFlag.add(R.drawable.canada);
listFlag.add(R.drawable.aus);
}
}

Little mistake, Please Add your code with in onItemClick method
In here Showing Toast Message . And Demo code for New Activity Launch
listview.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// TODO Auto-generated method stub
// Add your staff here
Toast.makeText(getActivity(),"Listview Click"+position, Toast.LENGTH_SHORT).show();
Intent intent = new Intent(getActivity(), Your_Desise.class);
startActivity(intent);
}
});
Try this way .I am sure it will helps you .
Listview , open new activity onClick
Start Activities from onItemClick of ListView in fragments

you must need to call AdapterView onItemClickListener
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(getActivity(),"Click" +position, Toast.LENGTH_SHORT).show();
}
});

Fragment ListView Inflation of new Row to Maintain onItemClick Selection

I have a ListView that is within a Fragment. In the onCreateView section I have set a onItemClickListener for the list, which highlights the selected item in the ListView. I have set two ImageButtons that navigate up and down the list. On selection a new Row is inflated that has its TextView's set to the content of the select item (for the purpose of retaining the highlighted selected state). However I am having difficulty adding that item back to the list. The app will not compile due to the line routines.add(selectedPos-1, str); it wants wants int location, Routine object. I believe the issue is with my construction of my SelectedAdapter class, but I have been unable to determine what to change/pass with regard to the Object.
IE:
public SelectedAdapter(Context context, int textViewResourceId,List objects) {
super(getActivity(), R.layout.listview_routines, routines); }
I would greatly appreciate any input as how to correct this issue; as well as any advice if there is a better way to maintain a selected state. Thanks for your help.
Fragment:
public static class FragmentRoutine extends Fragment {
DatabaseHandler db;
private ListView routineListView;
private List<Routine> routines = new ArrayList<Routine>();
ArrayAdapter<Routine> routineAdapter;
Routine longClickedItemRoutines;
private SelectedAdapter selectedAdapter;
public FragmentRoutine() {}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.routines,
container, false);
db = new DatabaseHandler(getActivity().getApplicationContext());
routineListView = (ListView) rootView.findViewById(R.id.routineList);
registerForContextMenu(routineListView);
db.closeDB();
if (db.getExerciseCount() != 0)
routines.clear();
routines.addAll(db.getAllRoutines());
populateList();
selectedAdapter = new SelectedAdapter(this.getActivity(), 0, routines);
selectedAdapter.setNotifyOnChange(true);
routineListView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
#Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
longClickedItemRoutines = routines.get(position);
return false;
}
});
routineListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView arg0, View view,
int position, long id) {
selectedAdapter.setSelectedPosition(position);
}
});
routineListView.post(new Runnable() {
#Override
public void run() {
routineListView.setItemChecked(0, true);
}
});
// move up event handler
ImageButton btnMoveUp = (ImageButton) rootView.findViewById(R.id.btnMoveUp);
btnMoveUp.setOnClickListener(new AdapterView.OnClickListener() {
public void onClick(View arg0) {
moveUp();
}
});
// move down event handler
ImageButton btnMoveDown = (ImageButton) rootView.findViewById(R.id.btnMoveDown);
btnMoveDown.setOnClickListener(new AdapterView.OnClickListener() {
public void onClick(View arg0) {
moveDown();
}
});
setHasOptionsMenu(true);
return rootView;
}
// Move selected item "up" in the ViewList.
private void moveUp(){
Routine currentToDoSave = routines.get(selectedAdapter.getSelectedPosition());
int selectedPos = selectedAdapter.getSelectedPosition();
if (selectedPos > 0 ){
routines.remove(selectedPos);
String str = currentToDoSave.getTagName();
//Problem Line Below
routines.add(selectedPos-1, str);
// set selected position in the adapter
selectedAdapter.setSelectedPosition(selectedPos-1);
}
}
// Move selected item "down" in the ViewList.
private void moveDown(){
Routine currentToDoSave = routines.get(selectedAdapter.getSelectedPosition());
int selectedPos = selectedAdapter.getSelectedPosition();
if (selectedPos < routines.size()-1 ){
routines.remove(selectedPos);
String str = currentToDoSave.getTagName();
routines.add(selectedPos+1, str);
// set selected position in the adapter
selectedAdapter.setSelectedPosition(selectedPos+1);
}
}
public class SelectedAdapter extends ArrayAdapter<Routine>{
// used to keep selected position in ListView
private int selectedPos = -1; // init value for not-selected
public SelectedAdapter(Context context, int textViewResourceId,
List objects) {
super(getActivity(), R.layout.listview_routines, routines);
}
public void setSelectedPosition(int pos){
selectedPos = pos;
// inform the view of this change
notifyDataSetChanged();
}
public int getSelectedPosition(){
return selectedPos;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
// only inflate the view if it's null
if (v == null) {
LayoutInflater vi
= (LayoutInflater)this.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.selected_row, null);
}
// get text view
TextView label = (TextView)v.findViewById(R.id.txtExample);
// change the row color based on selected state
if(selectedPos == position){
label.setBackgroundColor(Color.CYAN);
}else{
label.setBackgroundColor(Color.WHITE);
}
label.setText(this.getItem(position).toString());
return(v);
}
}
private void populateList() {
routineAdapter = new SaveListAdapterT();
routineListView.setAdapter(routineAdapter);
}
public class SaveListAdapterT extends ArrayAdapter<Routine> {
public SaveListAdapterT() {
super(getActivity(), R.layout.listview_routines, routines);
}
#Override
public View getView(int position, View view, ViewGroup parent) {
if (view == null)
view = getActivity().getLayoutInflater().inflate(R.layout.listview_routines, parent, false);
Routine currentToDoSave = routines.get(position);
TextView name = (TextView) view.findViewById(R.id.name);
name.setText(currentToDoSave.getTagName());
return view;
}
}
}

Update Listview item and get values using BaseAdapter Android

I have a listview of that have multiple items.I want to update the items value on click of button and want to get the the values of all the items on click of the button.But i am unable to do that.Please help me to get this functionality
Activity code
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_ItemValue);
setContentView(R.layout.activity_iween_booking_page);
listView = (ListView) findViewById(R.id.passengerList);
showPassengerListView(passengerList);
}
getValue.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
if(){
}else{
//Here i have to get all the value of the listview items in a array
}
}
});
}
private void showPassengerListView(final String[] passengerList) {
listView.setAdapter(new PassengerListUpdate(passengerList));
listView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
}
});
}
public void passengerInformationPopup(final String[] passengerList, final int position) {
final Dialog dialog= new Dialog(MainActivity.this,R.style.Dialog_Fullscreen);
dialog.setContentView(R.layout.passenger_details_dialog);
dialog.show();
setValueDialog.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
isSuccess= true;
if(isSuccess){
dialog.cancel();
//Here i Have to Update the item at position with some value
}
}
});
}
public void goBack(View v) {
finish();
}
class PassengerListUpdate extends BaseAdapter {
String[] ItemValue;
public PassengerListUpdate(String[] text) {
ItemValue = text;
}
public int getCount() {
// TODO Auto-generated method stub
return ItemValue.length;
}
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return null;
}
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = getLayoutInflater();
View vi;
vi = inflater.inflate(android.R.layout.simple_list_item_1, parent, false);
TextView ItemValue;
ItemValue = (TextView) vi.findViewById(android.R.id.text1);
ItemValue.setText(ItemValue[position]);
return (vi);
}
}
Please help me to how to set a items value and how to get the listview values

[Want] to get the the values of all the items on click of the button
To get all values, create a method getAllValues() inside PassengerListUpdate:
public String[] getAllValues() {
return ItemValue;
}
Declare your adapter globally:
PassengerListUpdate myAdapter;
Initialize it in showPassengerListView(String[]):
myAdapter = new PassengerListUpdate(passengerList);
listView.setAdapter(myAdapter);
To get the list of all values on button click:
button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
if (myAdapter != null) {
String[] allValues = myAdapter.getAllValues();
}
}
});
I want to update the items value on click of button
To update the values, you can simply reinitialize and set myAdapter:
button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
myAdapter = new PassengerListUpdate(updatedPassengerList);
listView.setAdapter(myAdapter);
}
});

First, in order to get whole the values inside ListView. You can get number of item in adapter, and then get value one by one by its position.
ArrayList<String> results = new ArrayList<String>();
final int count = mMyAdapter.getCount();
for( int i = 0; i < count; ++i ){
String item = mMyAdapter.getItem(i);
results.add(item);
}
return results;
Second, in order to add or update the value of ListView, in general extending ArrayAdapter is much easier than implementing BaseAdapter, because of ArrayAdapter support add / remove / insert method by itself. For example,
public class MyAdapter extends ArrayAdapter<String> {
public MyAdapter(Context context) {
super(context, 0);
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = getLayoutInflater();
View vi;
vi = inflater.inflate(android.R.layout.simple_list_item_1, parent, false);
TextView ItemValue;
ItemValue = (TextView) vi.findViewById(android.R.id.text1);
ItemValue.setText(ItemValue[position]);
return (vi);
}
}
And you can updating adapter's value quiet directly,
mMyAdapter.add("Add Item");
mMyAdapter.remove("Remove Item");
mMyAdapter.insert("Insert Item", 0);
After finishing the jobs, you can call adapter's notifyDatSetChanged() method in order to update the UI, and I think this is more efficient way than setting up the new adapter every time whenever data is updated.
mMyAdapter.notifyDataSetChanged();

Why is my BaseAdapter class not incrementing the position in getView?

Edit: My issue seems like BaseAdapter just wont post more than 1 Spinner. If I change the array's size to 0, it wont put anything, but anything more than 1 is truncating it. It never passes position 0 from getView() and it never shwows anymore than 1. I have been at it for hours. Is there a reason for this?
I am having an issue with adding Spinners dynamically in a ListView using a BaseAdapter. I tried it before as a test to make sure it could be done correctly in a test class, and it iterates the positions correctly. But now I am doing it again and its failing. What I mean by failing is instead of getView() creating the new Spinner, it never leaves position 0. It still runs. Just never adds more Spinners.
This is my code:
Main Adapter code
public class RemindersAdapter extends BaseAdapter{
Spinner[] shownReminders = new Spinner[1];
TextView[] removeReminders = new TextView[1];
String[] reminders = new String[1]; //this hlds the values of the coresponding spinner
RemindersAdapter mAdapter;
#Override
public int getCount() {
return shownReminders.length;
}
#Override
public Object getItem(int position) {
return shownReminders[position];
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View view, ViewGroup parent) {
Log.d("TAG", "A NEW SPINNER AND TEXTVIEW IS CREATED HERE WITH POSITION"+position);
if(view == null) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
view = inflater.inflate(R.layout.reminder_spinner, parent, false);
}
Spinner reminderSpinner = (Spinner)view.findViewById(R.id.reminder_spinner);
reminderSpinner.setTag(String.valueOf(position));
ArrayAdapter<CharSequence> reminderAdapter = ArrayAdapter.createFromResource(
parent.getContext(), R.array.reminders_array, android.R.layout.simple_spinner_item);
reminderAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
reminderSpinner.setAdapter(reminderAdapter);
reminderSpinner.setOnItemSelectedListener(new MyOnReminderSelectedListener());
shownReminders[position] = reminderSpinner;
TextView remove = (TextView)view.findViewById(R.id.remove_reminder);
remove.setTag(String.valueOf(position));
removeReminders[position] = remove;
remove.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.d("The Array positioning of this remove view is: ", ""+v.getTag());
}
});
return view;
}
public void addReminder() {
Log.d("addReminder METHOD", "The Add Reminder method is running");
Spinner[] temp = new Spinner[shownReminders.length+1];
TextView[] temp2 = new TextView[removeReminders.length+1];
String [] temp3 = new String[reminders.length+1];
for(int i = 0; i < shownReminders.length; i++) {
temp[i] = shownReminders[i];
temp2[i] = removeReminders[i];
temp3[i] = reminders[i];
}
shownReminders = temp;
removeReminders = temp2;
reminders = temp3;
mAdapter.notifyDataSetChanged();//this just makes the adapter refresh itself
}
public void giveYourself(RemindersAdapter adapter) {
mAdapter = adapter;
}
public class MyOnReminderSelectedListener implements OnItemSelectedListener{
#Override
public void onItemSelected(AdapterView<?> parent, View view, int pos,
long id) {
int position = Integer.parseInt(parent.getTag().toString()); //gets the position of the Spinner and puts it in the same index in the reminders array
reminders[position] = parent.getItemAtPosition(pos).toString();
for(int i =0; i < reminders.length; i++) Toast.makeText(parent.getContext(), i+": "+reminders[i], Toast.LENGTH_SHORT).show();
}
#Override
public void onNothingSelected(AdapterView<?> arg0) {
// Do nothing for now
}
}//end of MyOnReminderSelectedListener innerclass
}//end of Class
What runs in the Activity
reminderList = (ListView)findViewById(R.id.reminders_list);
reminderAdapter = new RemindersAdapter();
reminderAdapter.giveYourself(reminderAdapter);
reminderList.setAdapter(reminderAdapter);
TextView addReminder = (TextView)findViewById(R.id.add_reminder);
addReminder.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.d("TAG", "The onClick is running !");
reminderAdapter.addReminder();
}
});
I am at a loss because my code looks exactly like my test code, with some modifications in order for it to work with my app. But the information used by the Adapter is pretty much the same. I am going to post the test code as well so you guys can see the code that works.
Test Code
public class RemindersAdapter extends BaseAdapter{
Spinner[] shownReminders = new Spinner[1];
ArrayList<TextView> removeSpinner = new ArrayList<TextView>();
Context mContext;
public RemindersAdapter(Context context) {
mContext = context;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return shownReminders.length;
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return shownReminders[position];
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public View getView(int position, View view, ViewGroup parent) {
Log.d("TAG", "Number of times this is running"+position);
Log.d("TAG", "Address of the Spinner Object"+shownReminders[position]);
if(view == null) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
view = inflater.inflate(R.layout.reminder_spinner, parent, false);
}
Spinner reminderSpinner = (Spinner)view.findViewById(R.id.reminders_spinner);
reminderSpinner.setTag("1");
ArrayAdapter<CharSequence> reminderAdapter = ArrayAdapter.createFromResource(
parent.getContext(), R.array.reminders_array, android.R.layout.simple_spinner_item);
reminderAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
reminderSpinner.setAdapter(reminderAdapter);
reminderSpinner.setOnItemSelectedListener(new MyOnReminderSelectedListener());
shownReminders[position] = reminderSpinner;
TextView remove = (TextView)view.findViewById(R.id.remove_reminder);
remove.setTag(position);
removeSpinner.add(remove);
remove.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int pos = Integer.parseInt(v.getTag().toString());
removeSpinner.remove(pos);
Spinner[] temp = new Spinner[shownReminders.length-1];
for(int i =0; i < shownReminders.length; i++) {
if(i == pos || i > pos) {
temp[i-1] = shownReminders[i];
} else {
temp[i] = shownReminders[i];
}
}
//Here i should refresh somewhow
}
});
return view;
}
public void addReminder() {
Spinner[] temp = new Spinner[shownReminders.length+1];
for(int i = 0; i < shownReminders.length; i++) {
temp[i] = shownReminders[i];
}
shownReminders = temp;
}
/*
* Listener for when the reminder spinner gets a value the user entered
* */
public class MyOnReminderSelectedListener implements OnItemSelectedListener{
#Override
public void onItemSelected(AdapterView<?> parent, View view, int pos,
long id) {
//does nothing for now
}
#Override
public void onNothingSelected(AdapterView<?> arg0) {
// Do nothing for now
}
}//end of MyOnReminderSelectedListener innerclass
I also have a question as to why the Adapter runs itself so much. For examples, using the Log, I noticed it calls getView() twice for no apparent reason. Its weird that it has this behavior. I guess I don't understand BaseAdapter so well.

This error will happen if you put a ListView inside a ScrollView. ListView itself does vertical scroll so it must not be put into a ScrollView.

An adapter will call getView when listView needs a new item to show. So, if your listView has no scroll, no new item will be created, and no call to getView will be made.
But you should not store all spinner objects, or create new objects in getView. That`s because it will be slow and maybe waste of memory.