I'm trying to make an audio file preview page which consists of a listview of files in a folder. Each row has a play button next to it which changes to a stop button when clicked. I now need a way of setting all the other images to the play button if a row is clicked as only one audio file should be playing at once. I tried iterating through the list and getting the imageview from this but had no luck (shown below):
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
IncidentLogger logger = new IncidentLogger(this.getActivity());
final List<Audio> audioList = logger.getAllAudio();
AudioListViewAdapter adapter = new AudioListViewAdapter(audioList, getActivity());
final ListView listView = (ListView) getActivity().findViewById(R.id.listView);
listView.setAdapter(adapter);
OnItemClickListener onItemClickListener = new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
for(int i = 0; i < audioList.size(); i++) {
View v = listView.getAdapter().getView(i, view, parent);
ImageView imageView = (ImageView) v.findViewById(R.id.control);
imageView.setImageResource(R.drawable.ic_action_play);
}
ImageView iv = (ImageView) view.findViewById(R.id.control);
if(iv.getTag() == "1") {
iv.setTag("0");
iv.setImageResource(R.drawable.ic_action_play);
} else {
iv.setTag("1");
iv.setImageResource(R.drawable.ic_action_stop);
}
}
};
listView.setOnItemClickListener(onItemClickListener);
}
This can be done so easily, you need to just look at on the position of list item that was clicked by user. A well described complete demo code is as below ...
public class ChangeImageInListDynamically extends Activity {
/**
* Adapter for your data.
*/
ImageAdapter adpAR;
ArrayList<String> itemList;
ListView mListView;
ImageAdapter mAdapter;
/**
* Indicate which item is currently selected.
* Its default selected item is '0' e.g., 1st item.
*/
private int selectedPosition=0;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
itemList = new ArrayList<String>();
for (int i = 0; i < 11; i++) {
itemList.add("Item - "+i);
}
mListView = (ListView)findViewById(R.id.data_list);
//Initialize your adapter
mAdapter = new ImageAdapter(nChangeImageInListDynamically.this, itemList);
//set adapter to your list.
mListView.setAdapter(mAdapter);
//set list click listener.
mListView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> av, View view, int position, long id) {
//your image that need to change dynamically.
ImageView imageView = (ImageView) view.findViewById(R.id.select);
//position of clicked item.
selectedPosition=position;
//change image of respective image.
imageView.setImageResource(R.drawable.selected);
//notify your adapter to update your list.
adpAR.notifyDataSetChanged();
}
});
}
static class ViewHolder {
TextView title;
ImageView img;
}
/**
* Your ImageAdapter.
*/
public class ImageAdapter extends BaseAdapter {
ArrayList<String> dataList;
Context context;
public ImageAdapter(Context context, ArrayList<String> arrayList) {
this.context = context;
this.dataList = arrayList;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return dataList.size();;
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = convertView;
final ViewHolder holder;
Log.d("posiiton ImageAdapater : ",""+position);
if (row == null) {
LayoutInflater inflater = ChangeImageInListDynamically.this.getLayoutInflater();
row = inflater.inflate(R.layout.listrow, null);
holder = new ViewHolder();
holder.title = (TextView) row.findViewById(R.id.text);
holder.img = (ImageView) row.findViewById(R.id.select);
row.setTag(holder);
} else {
holder = (ViewHolder) row.getTag();
}
//set titel text.
holder.title.setText(dataList.get(position));
//Change Image of selected item dynamically.
if(selectedPosition == position) {
//Item is selected.
holder.img.setImageResource(R.drawable.selected);
}else{
//Other non-selected items.
holder.img.setImageResource(R.drawable.dis_selected);
}
return row;
}
}
}
Related
I have a problem using folding cell library from the RAMOTION
I have implemented everything but I am facing a problem with the list view
I have a list of planets and when user tap on let's say Jupiter the view gets unfolded and more information is visible to the user and when user tap on the same view which is seeing then the view gets folded
Problem
if the user scrolls down the list and then scroll back up and come back up to Jupiter the view remains unfolded and it is happening to all the view.
I appreciate if anyone helps me out
folding state
here
unfolding state
here
AdapterClass
#SuppressWarnings({"WeakerAccess", "unused"})
public class SolarSystemFoldingCellListAdapter extends ArrayAdapter<SolarSystemItemFoldingCell> {
private HashSet<Integer> unfoldedIndexes = new HashSet<>();
private View.OnClickListener defaultRequestBtnClickListener;
private int incomingPosition ;
public SolarSystemFoldingCellListAdapter(Context context, List<SolarSystemItemFoldingCell> objects) {
super(context, 0, objects);
}
#NonNull
#Override
public View getView(int position, View convertView, #NonNull ViewGroup parent) {
// get item for selected view
SolarSystemItemFoldingCell solarSystemItemFoldingCell = getItem(position);
// if cell is exists - reuse it, if not - create the new one from resource
FoldingCell cell = (FoldingCell) convertView;
final ViewHolder viewHolder;
if (cell == null) {
viewHolder = new ViewHolder();
LayoutInflater vi = LayoutInflater.from(getContext());
cell = (FoldingCell) vi.inflate(R.layout.solar_system_folding_cell, parent, false);
// binding view parts to view holder
viewHolder.foldingCell = cell.findViewById(R.id.folding_cell);
viewHolder.relativeLayoutFolded = cell.findViewById(R.id.relativeLayoutFolded);
viewHolder.linearLayoutFolded = cell.findViewById(R.id.linearLayoutFolded);
viewHolder.planetOrStarNameFolded = cell.findViewById(R.id.planetOrStarNameFolded);
viewHolder.mass = cell.findViewById(R.id.mass);
viewHolder.actualMass = cell.findViewById(R.id.actualMass);
viewHolder.distance = cell.findViewById(R.id.distance);
viewHolder.actualDistance = cell.findViewById(R.id.actualDistance);
viewHolder.diameter = cell.findViewById(R.id.diameter);
viewHolder.actualDiameter = cell.findViewById(R.id.actualDiameter);
viewHolder.speed = cell.findViewById(R.id.speed);
viewHolder.actualSpeed = cell.findViewById(R.id.actualSpeed);
viewHolder.moreInfoButton = cell.findViewById(R.id.button);
viewHolder.frameLayoutUnfolded = cell.findViewById(R.id.frameLayoutUnfolded);
viewHolder.planetOrStarNameUnfolded = cell.findViewById(R.id.planetOrStarNameUnfolded);
cell.setTag(viewHolder);
} else {
// for existing cell set valid valid state(without animation)
if (unfoldedIndexes.contains(position)) {
cell.unfold(true);
} else {
cell.fold(true);
}
viewHolder = (ViewHolder) cell.getTag();
}
if (null == solarSystemItemFoldingCell)
return cell;
// bind data from selected element to view through view holder
viewHolder.planetOrStarNameFolded.setText(solarSystemItemFoldingCell.getPlantOrStarNameFolded());
viewHolder.actualMass.setText(solarSystemItemFoldingCell.getActualMass());
viewHolder.actualDistance.setText(solarSystemItemFoldingCell.getActualDistance());
viewHolder.actualDiameter.setText(solarSystemItemFoldingCell.getActualDiameter());
viewHolder.actualSpeed.setText(solarSystemItemFoldingCell.getActualSpeed());
viewHolder.planetOrStarNameUnfolded.setText(String.valueOf(solarSystemItemFoldingCell.getPlanetOrStarNameUnfolded()));
//setting Fonts
viewHolder.planetOrStarNameFolded.setTypeface(App.getAppInstance().getArvoBold());
viewHolder.mass.setTypeface(App.getAppInstance().getArvoBold());
viewHolder.distance.setTypeface(App.getAppInstance().getArvoBold());
viewHolder.diameter.setTypeface(App.getAppInstance().getArvoBold());
viewHolder.speed.setTypeface(App.getAppInstance().getArvoBold());
viewHolder.actualMass.setTypeface(App.getAppInstance().getArvoRegular());
viewHolder.actualDistance.setTypeface(App.getAppInstance().getArvoRegular());
viewHolder.actualDiameter.setTypeface(App.getAppInstance().getArvoRegular());
viewHolder.actualSpeed.setTypeface(App.getAppInstance().getArvoRegular());
viewHolder.moreInfoButton.setTypeface(App.getAppInstance().getArvoRegular());
// set custom btn handler for list item from that item
if (solarSystemItemFoldingCell.getRequestBtnClickListener() != null) {
viewHolder.moreInfoButton.setOnClickListener(solarSystemItemFoldingCell.getRequestBtnClickListener());
} else {
// (optionally) add "default" handler if no handler found in item
viewHolder.moreInfoButton.setOnClickListener(defaultRequestBtnClickListener);
}
viewHolder.relativeLayoutFolded.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getContext(), "Something gets clicked", Toast.LENGTH_SHORT).show();
viewHolder.foldingCell.fold(false);
registerFold(incomingPosition);
}
});
return cell;
}
// simple methods for register cell state changes
public void registerToggle(int position) {
if (unfoldedIndexes.contains(position)) {
registerFold(position);
incomingPosition = position;
}else
registerUnfold(position);
}
public void registerFold(int position) {
unfoldedIndexes.remove(position);
}
public void registerUnfold(int position) {
unfoldedIndexes.add(position);
}
public View.OnClickListener getDefaultRequestBtnClickListener() {
return defaultRequestBtnClickListener;
}
public void setDefaultRequestBtnClickListener(View.OnClickListener defaultRequestBtnClickListener) {
this.defaultRequestBtnClickListener = defaultRequestBtnClickListener;
}
// View lookup cache
private static class ViewHolder {
RelativeLayout relativeLayoutFolded ;
LinearLayout linearLayoutFolded ;
TextView planetOrStarNameFolded;
TextView mass;
TextView actualMass;
TextView distance;
TextView actualDistance;
TextView diameter;
TextView actualDiameter;
TextView speed;
TextView actualSpeed ;
Button moreInfoButton ;
FrameLayout frameLayoutUnfolded ;
TextView planetOrStarNameUnfolded;
FoldingCell foldingCell ;
}
}
SolarSystemClass
private void listViewIntegration (){
arrayList = addingDataIntoList();
solarSystemFoldingCellListAdapter = new SolarSystemFoldingCellListAdapter(SolarSystem.this , arrayList);
listView.setAdapter(solarSystemFoldingCellListAdapter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
int duration = 500; //miliseconds
int offset = 0; //fromListTop
listView.smoothScrollToPositionFromTop(position,offset,duration);
// toggle clicked cell state
((FoldingCell) view).toggle(false);
// register in adapter that state for selected cell is toggled
solarSystemFoldingCellListAdapter.registerToggle(position);
// listView.smoothScrollToPosition(position);
}
});
}
I have a list in which i can assigned the values statically.
private List<ListData> mDataList = Arrays.asList(
new ListData("Arun"),
new ListData("Jega"),
new ListData("Kabilan"),
new ListData("Karthick"),
new ListData("Joushva"),
new ListData("Niranjana"),
new ListData("Paramesh"),
new ListData("Prabha"),new ListData("Test1"),new ListData("Test2") );
The problem is now i got a scenario where i should get these value dynamically from web apim and i have to set it to the List variable mDataList.
Please help me to clear this. Thanks in advance.
Here is my complete code.
public class ReportFragment extends Fragment {
View ParentView;
private static final int HIGHLIGHT_COLOR = 0x999be6ff;
// list of data items
private List<ListData> mDataList = Arrays.asList(
new ListData("Arun"),
new ListData("Jega"),
new ListData("Kabilan"),
new ListData("Karthick"),
new ListData("Joushva"),
new ListData("Niranjana"),
new ListData("Paramesh"),
new ListData("Prabha"),new ListData("Test1"),new ListData("Test2")
);
// declare the color generator and drawable builder
private ColorGenerator mColorGenerator = ColorGenerator.MATERIAL;
private TextDrawable.IBuilder mDrawableBuilder;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
ParentView= inflater.inflate(R.layout.report_fragment, container, false);
init();
return ParentView;
}
public void init(){
mDrawableBuilder = TextDrawable.builder()
.round();
// init the list view and its adapter
final ListView listView = (ListView) ParentView.findViewById(R.id.listView1);
listView.setAdapter(new SampleAdapter());
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
}
});
}
private class SampleAdapter extends BaseAdapter {
#Override
public int getCount() {
return mDataList.size();
}
#Override
public ListData getItem(int position) {
return mDataList.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
if (convertView == null) {
convertView = View.inflate(getActivity() , R.layout.list_item_layout, null);
holder = new ViewHolder(convertView);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
ListData item = getItem(position);
// provide support for selected state
updateCheckedState(holder, item);
holder.imageView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// when the image is clicked, update the selected state
ListData data = getItem(position);
data.setChecked(!data.isChecked);
updateCheckedState(holder, data);
}
});
holder.textView.setText(item.data);
return convertView;
}
private void updateCheckedState(ViewHolder holder, ListData item) {
if (item.isChecked) {
holder.imageView.setImageDrawable(mDrawableBuilder.build(" ", 0xff616161));
holder.view.setBackgroundColor(HIGHLIGHT_COLOR);
holder.checkIcon.setVisibility(View.VISIBLE);
}
else {
TextDrawable drawable = mDrawableBuilder.build(String.valueOf(item.data.charAt(0)), mColorGenerator.getColor(item.data));
holder.imageView.setImageDrawable(drawable);
holder.view.setBackgroundColor(Color.TRANSPARENT);
holder.checkIcon.setVisibility(View.GONE);
}
}
}
private static class ViewHolder {
private View view;
private ImageView imageView;
private TextView textView;
private ImageView checkIcon;
private ViewHolder(View view) {
this.view = view;
imageView = (ImageView) view.findViewById(R.id.imageView);
textView = (TextView) view.findViewById(R.id.textView);
checkIcon = (ImageView) view.findViewById(R.id.check_icon);
}
}
private static class ListData {
private String data;
private boolean isChecked;
public ListData(String data) {
this.data = data;
}
public void setChecked(boolean isChecked) {
this.isChecked = isChecked;
}
}
}
create a method to add items in your adapter class, this method will add item to
itemlist. this will add items dynamically on your list or grid.
e.g
public void addItem(Item item){
itemList.add(item);
notifydatasetchanged();}
create a adapter class and constructor, in constructor just initialize the item arraylist and create extra method called addItem() this method will add item to your arraylist. after that you just have to call notifyDatasetchanged and your new item will be added.
This is what i have tried, but my ListView doesn't get filled. I use a custom adapter because i wan't to change the background color of the items that't got a boolean value = true. I am using Android Studio.
Hope someone can help.
i'm new to android.
public class ShoppingListActivity extends ActionBarActivity {
private TextView header;
private ListView listView;
private CustomArrayAdapter arrayAdapter;
private ShoppingList shoppingList;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_shopping_list);
header = (TextView)findViewById(R.id.textView2);
//get reference to ListView
listView = (ListView)findViewById(R.id.shoppingListItemsView);
shoppingList = (ShoppingList) getIntent().getSerializableExtra(Globals.CHOSENLISTKEY);
arrayAdapter = new CustomArrayAdapter(this, R.layout.custom_list_view, shoppingList.getItemList());
listView.setAdapter(arrayAdapter);
header.setText(shoppingList.toString());
Button btnShop = (Button) findViewById(R.id.btnShop);
btnShop.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(ShoppingListActivity.this, SelectStoreActivity.class);
startActivity(intent);
}
});
}
public void setData() {
for(int i = 0; i < shoppingList.getItemList().size(); i++) {
arrayAdapter.add(shoppingList.getItemList().get(i));
}
}
}
public class CustomArrayAdapter extends ArrayAdapter<Entry> {
private int resource;
private ArrayList<Entry> list;
public CustomArrayAdapter(Context context, int resource, ArrayList<Entry> list) {
super(context, resource);
this.resource = resource;
this.list = list;
}
#Override
public View getView(int position, View convertView, ViewGroup parentGroup) {
View view = convertView;
Entry entry = list.get((position));
if(view == null) {
LayoutInflater layoutInflater = ((Activity) getContext()).getLayoutInflater();
view = layoutInflater.inflate(resource, parentGroup, false);
}
TextView textView = (TextView) view.findViewById(R.id.customName);
if(entry.getItem().isBought()) {
textView.setBackgroundColor(Color.BLUE);
}
return view;
}
}
To show data in ListView rows call setText method of TextView which is return from getView method:
TextView textView = (TextView) view.findViewById(R.id.customName);
// get Text from entry and pass it to setText method
String strTextViewData=entry.getItem()...;
textView.setText(strTextViewData);
if(entry.getItem().isBought()) {
textView.setBackgroundColor(Color.BLUE);
}
I want to create a BaseAdapter for a ListView. From my database I get an ArrayList that contains the entries for the ListView. The onCreate Method works fine but if I click the button to insert data to the database and display it in the ListView my app crashes. I'm looking for the Solution but can't find it. Maybe you do.
Logcat says there is a NullPointerException at the point where the text of the TextView is set (LaunchActivity$CustomAdapter.getView).
LaunchActivity.java
public class LaunchActivity extends Activity {
ImageView buttonAdd;
EditText insertText;
SubjectAdapter helper;
ListView listView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_launch);
helper=new SubjectAdapter(this);
listView = (ListView) findViewById(R.id.listViewLaunch);
listView.setEmptyView(findViewById(R.id.emptyView));
insertText = (EditText) findViewById(R.id.editTextLaunch);
buttonAdd = (ImageView) findViewById(R.id.imageViewLaunch);
buttonAdd.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
String subject = insertText.getText().toString();
long id=helper.insertData(subject);
if(id<0){
Log.d("Personal", "insertData not successfull");
} else {
// Hiding the keyboard
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(insertText.getWindowToken(), 0);
// loading ListView with newly added data
loadListViewData();
Log.d("Personal", "insertData successfull");
Toast.makeText(LaunchActivity.this, subject+" hinzugefügt", Toast.LENGTH_LONG).show();
insertText.setText("");
}
}
});
loadListViewData();
}
public void loadListViewData() {
// database handler
SubjectAdapter helper = new SubjectAdapter(getApplicationContext());
// Get Data from Database and set ArrayList
ArrayList<String> list = (ArrayList<String>) helper.getData();
// Creating adapter for ListView
CustomAdapter adapter = new CustomAdapter(getApplicationContext(), list);
// attaching data adapter to ListView
listView.setAdapter(adapter);
}
class CustomAdapter extends BaseAdapter{
ArrayList<String> list = new ArrayList<String>();
Context context;
// Constructor
CustomAdapter(Context context, ArrayList<String> list){
this.list = list;
this.context = context;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return list.size();
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return list.get(position);
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = convertView;
// LayoutInflation and Recycling
if(row == null){
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(R.layout.item_listview, parent, false);
}
TextView myText = (TextView) findViewById(R.id.textList);
// Get String from ArrayList
String temp = list.get(position);
// Set Text for TextView inside ListView
myText.setText(temp);
return row;
}
}
}
If row is null you have to inflate and assign the result to row!
row = inflater.inflate(R.layout.item_listview, parent, false);
Also you'll want to get myText from row:
TextView myText = (TextView) row.findViewById(R.id.textList);
First create object of ArrayList<String> in getData() and check code below:
public void loadListViewData() {
// database handler
SubjectAdapter helper = new SubjectAdapter(getApplicationContext());
// Get Data from Database and set ArrayList
ArrayList<String> list = helper.getData();
// Creating adapter for ListView
CustomAdapter adapter = new CustomAdapter(getApplicationContext(), list);
// attaching data adapter to ListView
listView.setAdapter(adapter);
}
class CustomAdapter extends BaseAdapter{
ArrayList<String> list = null;
Context context;
// Constructor
CustomAdapter(Context context, ArrayList<String> list){
this.list = list;
this.context = context;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return list.size();
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return list.get(position);
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = convertView;
// LayoutInflation and Recycling
if(row == null){
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(R.layout.item_listview, parent, false);
}
TextView myText = (TextView) findViewById(R.id.textList);
// Get String from ArrayList
String temp = list.get(position);
// Set Text for TextView inside ListView
myText.setText(temp);
return row;
}
}
and make sure return type of getData() will be ArrayList<String>
hope it will help.
I'm trying to refresh the list view when I click on a single item of the list view.
For example I'm trying to do something like this:
public class RssItemsAdapter extends ArrayAdapter<Item> {
private TextView txtTitle;
private ImageView imgFavourite;
private int resourceId;
private Context context;
private List<Item> items = new ArrayList<Item>();
public RssItemsAdapter(Context context, int resourceId, List<Item> items)
{
super(context, resourceId, items);
this.context = context;
this.items = items;
this.resourceId = resourceId;
}
#Override
public int getCount() {
return items.size();
}
#Override
public Item getItem(int index) {
return items.get(index);
}
#Override
public View getView(int position, View convertView, ViewGroup parent)
{
View row = convertView;
Item item = getItem(position);
if (row == null) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row = inflater.inflate(resourceId, parent, false);
}
txtTitle = (TextView) row.findViewById(R.id.title);
txtTitle.setText(item.getTitle());
imgFavourite = (ImageView) row.findViewById(R.id.favourite);
imgFavourite.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
if (item.isFavourite() == true) {
imgFavourite.setBackgroundResource(android.R.drawable.btn_star_big_off);
}
else {
imgFavourite.setBackgroundResource(android.R.drawable.btn_star_big_on);
}
}
});
// add a "star" icon on favourite items
if (item.isFavourite() == true)
imgFavourite.setBackgroundResource(android.R.drawable.btn_star_big_on);
else
imgFavourite.setBackgroundResource(android.R.drawable.btn_star_big_off);
return row;
}
Every time I click on the imgFavourite icon it should change. Where is the problem?
It doesn't look like you are ever changing the value of item.isFavourite(). Assuming you want to toggle when that item is clicked...
imgFavourite.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// Toggle the current state
item.setIsFavourite(!item.isFavourite());
if (item.isFavourite() == true) {
imgFavourite.setBackgroundResource(android.R.drawable.btn_star_big_off);
}
else {
imgFavourite.setBackgroundResource(android.R.drawable.btn_star_big_on);
}
}
});
Also, you should be doing this kind of work in the ListView's onItemClickListsner. As is, this will create a new onClickListener each time a new row is brought into view. Beyond that, check into the "view holder pattern".