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How to set a title on BottomSheetDialog with grid?

I have created a BottomSheetDialog with a GridView, but I know that BottomSheetDialog can't set a title using the method .setTitle(), so how can I set a title on the dialog?
Here's my code:
Activity:
customAdapter = new CustomAdapter(this);
GridView gridView = new GridView(this);
gridView.setAdapter(customAdapter);
gridView.setNumColumns(5);
BottomSheetDialog bottomSheetDialog = new BottomSheetDialog(this);
bottomSheetDialog.setContentView(gridView);
bottomSheetDialog.show();
CustomAdapter:
private final LayoutInflater inflater;
private List<String> sizeCodes;
public CustomAdapter(Context context) {
this.sizeCodes = Collections.emptyList();
this.inflater = LayoutInflater.from(context);
}
public CustomAdapter addItems(List<SizeData> items) {
sizeCodes = new ArrayList<>();
for (SizeData item : items)
sizeCodes.add(item.getSize());
notifyDataSetChanged();
return this;
}
#Override
public int getCount() {
return sizeCodes.size();
}
#Override
public String getItem(int position) {
return sizeCodes.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null)
convertView = inflater.inflate(R.layout.item_size_picker, parent, false);
((TextView) convertView.findViewById(R.id.content)).setText(sizeCodes.get(position));
return convertView;
}
item_size_picker:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="8dp">
<TextView
android:id="#+id/content"
style="#style/Base.TextAppearance.AppCompat.Button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center" />
</FrameLayout>

ExpandableListView is blank in fragment

I am new at app developing. I'm currently working on an app with tabview and an ExpandableListView in one of the tabs, thus why i'm trying to use an expandablelistview in a fragment.
My expandablelistview appears flawlessly when run directly from an activity, but when i'm trying to run it from a fragment, it appears blank.
HomeFragment.java
public class HomeFragment extends Fragment {
ExpandableListView expandableListView;
View homeFragmentView;
public HomeFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
homeFragmentView = inflater.inflate(R.layout.fragment_home, container, false);
expandableListView = (ExpandableListView) homeFragmentView.findViewById(R.id.exp_listview);
return homeFragmentView;
}
#Override
public void onViewCreated(View v, Bundle savedInstanceState){
List<String> Headings = new ArrayList<String>();
List<String> L1 = new ArrayList<String>();
List<String> L2 = new ArrayList<String>();
List<String> L3 = new ArrayList<String>();
HashMap<String, List<String>> ChildList = new HashMap<String, List<String>>();
String heading_items[] = getResources().getStringArray(R.array.header_titles);
String h1[] = getResources().getStringArray(R.array.h1_items);
String h2[] = getResources().getStringArray(R.array.h2_items);
String h3[] = getResources().getStringArray(R.array.h3_items);
for(String title : heading_items){
Headings.add(title);
}
for (String title : h1){
L1.add(title);
}
for (String title : h2){
L2.add(title);
}
for (String title : h3){
L3.add(title);
}
ChildList.put(Headings.get(0), L1);
ChildList.put(Headings.get(1), L2);
ChildList.put(Headings.get(2), L3);
ExpListViewAdapter expListViewAdapter = new ExpListViewAdapter(getActivity(), Headings, ChildList);
expandableListView.setAdapter(expListViewAdapter);
}
}
Adapter class:
public class ExpListViewAdapter extends BaseExpandableListAdapter {
private List<String> header_titles;
private HashMap<String, List<String>> child_titles;
private Context ctx;
ExpListViewAdapter(Context ctx, List<String> header_titles, HashMap<String, List<String>> child_titles){
this.ctx = ctx;
this.child_titles = child_titles;
this.header_titles = header_titles;
}
#Override
public int getGroupCount() {
return header_titles.size();
}
#Override
public int getChildrenCount(int groupPosition) {
return child_titles.get(header_titles.get(groupPosition)).size();
}
#Override
public Object getGroup(int groupPosition) {
return header_titles.get(groupPosition);
}
#Override
public Object getChild(int groupPosition, int childPosition) {
return child_titles.get(header_titles.get(groupPosition)).get(childPosition);
}
#Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
#Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
#Override
public boolean hasStableIds() {
return false;
}
#Override
public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
String title = (String)this.getGroup(groupPosition);
if (convertView == null){
LayoutInflater layoutInflater = (LayoutInflater) this.ctx.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = layoutInflater.inflate(R.layout.parent_layout, null);
}
TextView textView = (TextView) convertView.findViewById(R.id.heading_item);
textView.setTypeface(null, Typeface.BOLD);
textView.setText(title);
return convertView;
}
#Override
public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
String title = (String)this.getChild(groupPosition,childPosition);
if (convertView == null){
LayoutInflater layoutInflater = (LayoutInflater) this.ctx.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = layoutInflater.inflate(R.layout.child_layout, null);
}
TextView textView = (TextView) convertView.findViewById(R.id.child_item);
textView.setText(title);
return convertView;
}
#Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
header (parent) layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#151515">
<TextView
android:id="#+id/heading_item"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Hello World"
android:textColor="#ffffff"
android:textSize="25dp"
android:gravity="center_vertical"
android:layout_marginLeft="10dp"
/>
</LinearLayout>
child layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#252525">
<TextView
android:id="#+id/child_item"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Hello World"
android:textColor="#f9f9f9"
android:gravity="center_vertical"
android:textSize="20dp"
android:layout_marginLeft="10dp"
/>
</LinearLayout>
MainActivity.java
public class MainActivity extends AppCompatActivity {
Toolbar toolbar;
TabLayout tabLayout;
ViewPager viewPager;
ViewPagerAdapter viewPagerAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
overridePendingTransition(R.anim.slide_in, R.anim.slide_out);
toolbar = (Toolbar) findViewById(R.id.toolBar);
setSupportActionBar(toolbar);
tabLayout = (TabLayout) findViewById(R.id.tabLayout);
viewPager = (ViewPager) findViewById(R.id.viewPager);
viewPagerAdapter = new ViewPagerAdapter(getSupportFragmentManager());
viewPagerAdapter.addFragments(new HomeFragment(), "Home");
viewPagerAdapter.addFragments(new Group_Invites(), "Group invites");
viewPagerAdapter.addFragments(new New_Group(), "New group");
viewPager.setAdapter(viewPagerAdapter);
tabLayout.setupWithViewPager(viewPager);
}
}
ViewPagerAdapter.java
public class ViewPagerAdapter extends FragmentPagerAdapter {
ArrayList<Fragment> fragments = new ArrayList<>();
ArrayList<String> tabTitles = new ArrayList<>();
public void addFragments(Fragment fragments, String titles){
this.fragments.add(fragments);
this.tabTitles.add(titles);
}
public ViewPagerAdapter(FragmentManager fm){
super (fm);
}
#Override
public Fragment getItem(int position) {
return fragments.get(position);
}
#Override
public int getCount() {
return fragments.size();
}
#Override
public CharSequence getPageTitle(int position){
return tabTitles.get(position);
}
}

I tried your code and it is working fine. Also share your activity code from where you have opened your fragment class.

Android listview not being populated

I'm trying to populate a listview with the id android.id/list with some xml data.. The data is successfully requested and I get no errors when passing it to my Lazy Adapter and setting it to the listview.. Can somebody help me?
The request:
private void requestFeed() {
SimpleXmlRequest<StationList> simpleRequest = new SimpleXmlRequest<StationList>(Request.Method.GET, url, StationList.class,
new Response.Listener<StationList>()
{
#Override
public void onResponse(StationList response) {
list = response.getStationList();
buildFeed();
if(mSplashDialog != null) {
removeSplashScreen();
} else {
setReloadFeedButtonState(false);
}
}
},
new Response.ErrorListener()
{
#Override
public void onErrorResponse(VolleyError error) {
// error Object
Log.d("TESTE", error.toString());
}
}
);
simpleRequest.setTag(SIMPLE_TAG);
queue = Volley.newRequestQueue(this);
queue.add(simpleRequest);
}
The buildFeed:
private void buildFeed() {
if(stations == null) {
stations = (ListView) findViewById(android.R.id.list);
adapter = new LazyAdapter(this, list);
stations.setAdapter(adapter);
}
adapter.notifyDataSetChanged();
}
The adapter:
public class LazyAdapter extends BaseAdapter {
private List<Station> stations;
private static LayoutInflater inflater = null;
public LazyAdapter(Activity activity, List<Station> stations) {
this.stations = stations;
inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public int getCount() {
return stations.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
View vi = convertView;
if(convertView == null)
vi = inflater.inflate(R.layout.list_row, null);
TextView name = (TextView) vi.findViewById(R.id.station_name);
TextView ct = (TextView) vi.findViewById(R.id.station_ct);
TextView cl = (TextView) vi.findViewById(R.id.station_cl);
Station tmp = stations.get(position);
name.setText(tmp.get_name());
ct.setText(tmp.get_ct());
cl.setText(tmp.get_lc().toString());
return vi;
}
}
the xml of the activity
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:id="#+id/MainActivityLL"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="me...MainActivity" >
<ListView
android:id="#android:id/list"
android:layout_width="match_parent"
android:layout_height="0dp"
android:divider="#color/list_divider"
android:dividerHeight="1dp"
android:layout_weight="1"
android:listSelector="#drawable/list_row_selector" />
<TextView
android:id="#android:id/empty"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:textAppearance="#android:style/TextAppearance.Medium"
android:text="#string/emptyList"
android:gravity="center" />
I've checked the stations list that comes in the response and is not empty.. I have all the data I need, but the listview is always showing the empty message from the textview with id android.id/empty ..

Remove android:id="#android:id/list"
Replace it with android:id="#+id/list"
<ListView
android:id="#android:id/list"
android:layout_width="match_parent"
android:layout_height="0dp"
android:divider="#color/list_divider"
android:dividerHeight="1dp"
android:layout_weight="1"
android:listSelector="#drawable/list_row_selector" />

Try to Use ViewHolder design pattern when you make custom adapter :
public class LazyAdapter extends BaseAdapter {
private List<Station> stations;
private Context context;
public LazyAdapter(Context context, List<Station> stations) {
this.stations = stations;
this.context=context;
}
public int getCount() {
return stations.size();
}
public Object getItem(int position) {
return stations.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null){
holder = new ViewHolder();
convertView = LayoutInflater.from(context).inflate(R.layout.list_row, null);
holder.name = (TextView) convertView.findViewById(R.id.station_name);
holder.ct = (TextView) convertView.findViewById(R.id.station_ct);
holder.cl = (TextView) convertView.findViewById(R.id.station_cl);
convertView.setTag(holder);
}else{
holder = (ViewHolder) convertView.getTag();
}
holder.name.setText(stations.get(position).get_name());
holder.ct.setText(stations.get(position).get_ct());
holder.cl.setText(stations.get(position).get_lc().toString());
return convertView;
}
class ViewHolder{
TextView name;
TextView ct;
TextView cl;
}
}

why the image not change when expand and collapse .?

Could you please tell me why my image not change when I change my expand and collapse the list view .Both time I got same image ..I will show in below image when I expand it display (+) image .why ?
here is my code .
Main activity
public class MainActivity extends Activity {
ExpandableListAdapter listAdapter;
ExpandableListView expListView;
List<String> listDataHeader;
HashMap<String, List<String>> listDataChild;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// get the listview
expListView = (ExpandableListView) findViewById(R.id.lvExp);
// preparing list data
prepareListData();
listAdapter = new ExpandableListAdapter(this, listDataHeader, listDataChild);
// setting list adapter
expListView.setAdapter(listAdapter);
// Listview Group click listener
expListView.setOnGroupClickListener(new OnGroupClickListener() {
#Override
public boolean onGroupClick(ExpandableListView parent, View v,
int groupPosition, long id) {
// Toast.makeText(getApplicationContext(),
// "Group Clicked " + listDataHeader.get(groupPosition),
// Toast.LENGTH_SHORT).show();
return false;
}
});
// Listview Group expanded listener
expListView.setOnGroupExpandListener(new OnGroupExpandListener() {
#Override
public void onGroupExpand(int groupPosition) {
if(listDataHeader.get(groupPosition) != null)
Toast.makeText(getApplicationContext(),
listDataHeader.get(groupPosition) + " Expanded",
Toast.LENGTH_SHORT).show();
}
});
// Listview Group collasped listener
expListView.setOnGroupCollapseListener(new OnGroupCollapseListener() {
#Override
public void onGroupCollapse(int groupPosition) {
Toast.makeText(getApplicationContext(),
listDataHeader.get(groupPosition) + " Collapsed",
Toast.LENGTH_SHORT).show();
}
});
// Listview on child click listener
expListView.setOnChildClickListener(new OnChildClickListener() {
#Override
public boolean onChildClick(ExpandableListView parent, View v,
int groupPosition, int childPosition, long id) {
// TODO Auto-generated method stub
Toast.makeText(
getApplicationContext(),
listDataHeader.get(groupPosition)
+ " : "
+ listDataChild.get(
listDataHeader.get(groupPosition)).get(
childPosition), Toast.LENGTH_SHORT)
.show();
return false;
}
});
}
/*
* Preparing the list data
*/
private void prepareListData() {
listDataHeader = new ArrayList<String>();
listDataChild = new HashMap<String, List<String>>();
// Adding child data
listDataHeader.add("Top 250");
listDataHeader.add("Now Showing");
listDataHeader.add("Coming Soon..");
// Adding child data
List<String> top250 = new ArrayList<String>();
top250.add("The Shawshank Redemption");
top250.add("The Godfather");
top250.add("The Godfather: Part II");
top250.add("Pulp Fiction");
top250.add("The Good, the Bad and the Ugly");
top250.add("The Dark Knight");
top250.add("12 Angry Men");
List<String> nowShowing = new ArrayList<String>();
nowShowing.add("The Conjuring");
nowShowing.add("Despicable Me 2");
nowShowing.add("Turbo");
nowShowing.add("Grown Ups 2");
nowShowing.add("Red 2");
nowShowing.add("The Wolverine");
/*List<String> comingSoon = new ArrayList<String>();
comingSoon.add("2 Guns");
comingSoon.add("The Smurfs 2");
comingSoon.add("The Spectacular Now");
comingSoon.add("The Canyons");
comingSoon.add("Europa Report");*/
listDataChild.put(listDataHeader.get(0), top250); // Header, Child data
listDataChild.put(listDataHeader.get(1), nowShowing);
listDataChild.put(listDataHeader.get(2), null);
}
}
Adapter
public class ExpandableListAdapter extends BaseExpandableListAdapter {
private Context _context;
private List<String> _listDataHeader; // header titles
// child data in format of header title, child title
private HashMap<String, List<String>> _listDataChild;
public ExpandableListAdapter(Context context, List<String> listDataHeader,
HashMap<String, List<String>> listChildData) {
this._context = context;
this._listDataHeader = listDataHeader;
this._listDataChild = listChildData;
}
#Override
public Object getChild(int groupPosition, int childPosititon) {
return this._listDataChild.get(this._listDataHeader.get(groupPosition))
.get(childPosititon);
}
#Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
#Override
public View getChildView(int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
final String childText = (String) getChild(groupPosition, childPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_item, null);
}
TextView txtListChild = (TextView) convertView
.findViewById(R.id.lblListItem);
txtListChild.setText(childText);
return convertView;
}
#Override
public int getChildrenCount(int groupPosition) {
if(this._listDataChild.get(this._listDataHeader.get(groupPosition))!=null)
return this._listDataChild.get(this._listDataHeader.get(groupPosition))
.size();
return 0;
}
#Override
public Object getGroup(int groupPosition) {
return this._listDataHeader.get(groupPosition);
}
#Override
public int getGroupCount() {
return this._listDataHeader.size();
}
#Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
#Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
String headerTitle = (String) getGroup(groupPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_group, null);
}
TextView lblListHeader = (TextView) convertView
.findViewById(R.id.lblListHeader);
lblListHeader.setTypeface(null, Typeface.BOLD);
lblListHeader.setText(headerTitle);
View ind = convertView.findViewById( R.id.explist_indicator);
if( ind != null ) {
ImageView indicator = (ImageView)ind;
if( getChildrenCount( groupPosition ) == 0 ) {
indicator.setVisibility( View.INVISIBLE );
} else {
indicator.setVisibility( View.VISIBLE );
int stateSetIndex = ( isExpanded ? 1 : 0) ;
Drawable drawable = indicator.getDrawable();
}
}
return convertView;
}
#Override
public boolean hasStableIds() {
return false;
}
#Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
activity.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="#f4f4f4" >
<ExpandableListView
android:id="#+id/lvExp"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:cacheColorHint="#00000000"
android:groupIndicator="#android:color/transparent"
/>
</LinearLayout>
list_group.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="8dp"
android:background="#000000">
<ImageView android:src="#drawable/test"
android:id="#+id/explist_indicator"
android:layout_width="20px"
android:layout_height="20px"/>
<TextView
android:id="#+id/lblListHeader"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingLeft="?android:attr/expandableListPreferredItemPaddingLeft"
android:textSize="17dp"
android:textColor="#f9f93d" />
</LinearLayout>
list_item.xml
![<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="55dip"
android:orientation="vertical" >
<TextView
android:id="#+id/lblListItem"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="17dip"
android:paddingTop="5dp"
android:paddingBottom="5dp"
android:textColor="#000000"
android:paddingLeft="?android:attr/expandableListPreferredChildPaddingLeft" />
</LinearLayout>][1]

I solve that problem by own .Like that
#Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
String headerTitle = (String) getGroup(groupPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_group, null);
}
TextView lblListHeader = (TextView) convertView
.findViewById(R.id.lblListHeader);
lblListHeader.setTypeface(null, Typeface.BOLD);
lblListHeader.setText(headerTitle);
View ind = convertView.findViewById(R.id.explist_indicator);
if (ind != null) {
ImageView indicator = (ImageView) ind;
if (isExpanded) {
indicator.setImageResource(R.drawable.icon_3);
} else {
indicator.setImageResource(R.drawable.icon_4);
}
if (getChildrenCount(groupPosition) == 0) {
indicator.setVisibility(View.INVISIBLE);
} else {
indicator.setVisibility(View.VISIBLE);
}
}
return convertView;
}
change Image view like that
<ImageView
android:id="#+id/explist_indicator"
android:layout_width="20px"
android:layout_height="20px"
android:src="#drawable/icon_4" />

How to implement Favorite Button to my BaseAdapter ListView?

I'm learning Android SDK and I need some advices.
I have custom ListView with BaseAdapter and I want to implement some new feature - Favorite Button.
What I want to do is, when I press the Favorite Button, ListItem goes to the beginning of the list, Favorite image change and all that stuff will be saved in the SharedPrefs.
Someone tell me what I need to do, to make it works?
my existing code:
row.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/layout_element_list"
>
<ImageView
android:id="#+id/icon"
android:layout_width="150dp"
android:padding="5dp"
android:layout_height="150dp"
android:layout_marginLeft="4px"
android:layout_marginRight="10px"
android:layout_marginTop="4px"
android:src="#drawable/radio" >
</ImageView>
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:id="#+id/label"
android:paddingTop="20dp"
android:layout_gravity="center_vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:textAlignment="center"
android:text="RadioName"
android:textColor="#color/color1"
android:textSize="30dp" />
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1">
<TextView
android:id="#+id/label2"
android:layout_gravity="center_vertical"
android:layout_width="fill_parent"
android:layout_weight="1"
android:layout_height="fill_parent"
android:textAlignment="center"
android:text="Description.."
android:textColor="#color/color1"
android:textSize="15dp" />
<ImageView
android:id="#+id/favButton"
android:layout_weight="1"
android:layout_width="fill_parent"
android:padding="5dp"
android:layout_height="fill_parent"
android:layout_marginLeft="4px"
android:layout_marginRight="10px"
android:layout_marginTop="4px"
android:src="#drawable/fav_off" >
</ImageView>
</LinearLayout>
</LinearLayout>
</LinearLayout>
BaseAdapter class:
public class RadioAdapter extends BaseAdapter
{
ArrayList<RadioStation> myList = new ArrayList<RadioStation>();
LayoutInflater inflater;
Context context;
public RadioAdapter(Context context, ArrayList<RadioStation> myList) {
this.myList = myList;
this.context = context;
inflater = LayoutInflater.from(this.context);
}
#Override
public int getCount() {
return myList.size();
}
#Override
public RadioStation getItem(int position) {
return myList.get(position);
}
#Override
public long getItemId(int position) {
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
MyViewHolder mViewHolder;
if(convertView == null) {
convertView = inflater.inflate(R.layout.activity_menu_row, null);
mViewHolder = new MyViewHolder();
convertView.setTag(mViewHolder);
} else {
mViewHolder = (MyViewHolder) convertView.getTag();
}
mViewHolder.tvTitle = detail(convertView, R.id.label, myList.get(position).getTitle());
mViewHolder.tvDesc = detail(convertView, R.id.label2, myList.get(position).getDescription());
mViewHolder.ivIcon = detail(convertView, R.id.icon, myList.get(position).getImgResId());
return convertView;
}
private TextView detail(View v, int resId, String text) {
TextView tv = (TextView) v.findViewById(resId);
tv.setText(text);
return tv;
}
private ImageView detail(View v, int resId, int icon) {
ImageView iv = (ImageView) v.findViewById(resId);
iv.setImageResource(icon); //
return iv;
}
private class MyViewHolder {
TextView tvTitle, tvDesc;
ImageView ivIcon;
}
}
RadioStation class:
public class RadioStation
{
public String title;
public String description;
public int imgResId;
//getters and setters
public static Comparator<RadioStation> comparatorByRadioName = new Comparator<RadioStation>()
{
#Override
public int compare(RadioStation radioStation, RadioStation radioStation2)
{
String name1 = radioStation.getTitle().toLowerCase();
String name2 = radioStation2.getTitle().toLowerCase();
return name1.compareTo(name2);
}
};
}
ActivityListView:
public class ActivityMenuList extends Activity implements AdapterView.OnItemClickListener
{
private ListView lvDetail;
private Context context = ActivityMenuList.this;
private ArrayList <RadioStation> myList = new ArrayList <RadioStation>();
private String[] names = new String[] { "one", "two", "three" };
private String[] descriptions = new String[] { "notset", "notset", "notset"};
private int[] images = new int[] { R.drawable.one, R.drawable.two, R.drawable.three };
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
getWindow().setBackgroundDrawableResource(R.drawable.bg1);
setContentView(R.layout.activity_menu_list);
lvDetail = (ListView) findViewById(R.id.list);
lvDetail.setOnItemClickListener(this);
getDataInList();
lvDetail.setAdapter(new RadioAdapter(context, myList));
}
private void getDataInList() {
for(int i=0;i<3;i++) {
RadioStation ld = new RadioStation();
ld.setTitle(names[i]);
ld.setDescription(descriptions[i]);
ld.setImgResId(images[i]);
myList.add(ld);
}
Collections.sort(myList, RadioStation.comparatorByRadioName);
}
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l)
{
String item = names[i];
Intent e = new Intent(ActivityMenuList.this, ActivityRadioStation.class);
Bundle data = new Bundle();
data.putString("radiostation",item);
e.putExtras(data);
startActivity(e);
}
}

That's a lot of changes you have to do. Let's start with the basic.
Add a boolean to your RadioStation for the favorite state.
public boolean isFavorite;
Next on your getView add the favorite button click listener(add its reference to the viewholder too, but let's keep it simple this time)
public class RadioAdapter extends BaseAdapter
{
ArrayList<RadioStation> myList = new ArrayList<RadioStation>();
LayoutInflater inflater;
Context context;
ListView mListview;
public RadioAdapter(Context context, ArrayList<RadioStation> myList, ListView list) {
this.myList = myList;
this.context = context;
mListView = list;
inflater = LayoutInflater.from(this.context);
}
#Override
public int getCount() {
return myList.size();
}
#Override
public RadioStation getItem(int position) {
return myList.get(position);
}
#Override
public long getItemId(int position) {
return 0;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
MyViewHolder mViewHolder;
if(convertView == null) {
convertView = inflater.inflate(R.layout.activity_menu_row, null);
mViewHolder = new MyViewHolder();
convertView.setTag(mViewHolder);
} else {
mViewHolder = (MyViewHolder) convertView.getTag();
}
mViewHolder.tvTitle = detail(convertView, R.id.label, myList.get(position).getTitle());
mViewHolder.tvDesc = detail(convertView, R.id.label2, myList.get(position).getDescription());
mViewHolder.ivIcon = detail(convertView, R.id.icon, myList.get(position).getImgResId());
convertView.findViewById(R.id.favButton).setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View view)
{
myList.get(position).isFavorite=! myList.get(position).isFavorite;
//reorder mlist
notifyDataSetChanged();
//mListView. smoothscroll here
}
});
((ImageView) convertView.findViewById(R.id.favButton)).setImageResource(myList.get(position).isFavorite?R.drawable.favoriteOn:R.drawable.favoriteOff);
return convertView;
}
private TextView detail(View v, int resId, String text) {
TextView tv = (TextView) v.findViewById(resId);
tv.setText(text);
return tv;
}
private ImageView detail(View v, int resId, int icon) {
ImageView iv = (ImageView) v.findViewById(resId);
iv.setImageResource(icon); //
return iv;
}
private class MyViewHolder {
TextView tvTitle, tvDesc;
ImageView ivIcon;
}
}
I left commented what you should do on the listener. You should be able to continue from here.
When you create your adapter pass the list as the last parameter on the constructor.
Edited: Removed interface. No need to use it here.