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How to set two different fonts in two different Fragment (TabLayout)

I have an app using tab layout and RecyclerView for getting items. I have 2 different tabs and I wanna use two different fonts on them. I have OneActivity and for tabsi have FirstFragment, SecondFragment.
I can change whole app's font with RecyclerView_Adapter. But i don't wanna change whole app's font. In FirstFragment (First Tab) i wanna use Arial and Text size 20 sp, in SecondFragment i wanna use Comic Sans and Text size 16 sp.
How can i do that, is it possible?
OneActivity.Java
public class OneActivity extends AppCompatActivity {
private static Toolbar toolbar;
private static ViewPager viewPager;
private static TabLayout tabLayout;
private static BottomNavigationView bottomNavigationView;
private ImageButton forwardbtn, backwardbtn, pausebtn, playbtn;
private MediaPlayer mPlayer;
private TextView songName, startTime, songTime;
private SeekBar songPrgs;
private static int oTime =0, sTime =0, eTime =0, fTime = 15000, bTime = 15000;
private Handler hdlr = new Handler();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_one);
backwardbtn = (ImageButton)findViewById(R.id.btnBackward);
forwardbtn = (ImageButton)findViewById(R.id.btnForward);
playbtn = (ImageButton)findViewById(R.id.btnPlay);
pausebtn = (ImageButton)findViewById(R.id.btnPause);
startTime = (TextView)findViewById(R.id.txtStartTime);
songTime = (TextView)findViewById(R.id.txtSongTime);
mPlayer = MediaPlayer.create(this, R.raw.deneme);
songPrgs = (SeekBar)findViewById(R.id.sBar);
songPrgs.setClickable(false);
pausebtn.setEnabled(false);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
viewPager = (ViewPager) findViewById(R.id.viewPager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabLayout);
tabLayout.setupWithViewPager(viewPager);//setting tab over viewpager
bottomNavigationView = (BottomNavigationView) findViewById(R.id.bottomNavigationView);
//Implementing tab selected listener over tablayout
tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
#Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());//setting current selected item over viewpager
switch (tab.getPosition()) {
case 0:
Log.e("TAG","TAB1");
break;
case 1:
Log.e("TAG","TAB2");
break;
}
}
#Override
public void onTabUnselected(TabLayout.Tab tab) {
}
#Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
playbtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(OneActivity.this, "One Oynatılıyor", Toast.LENGTH_SHORT).show();
mPlayer.start();
eTime = mPlayer.getDuration();
sTime = mPlayer.getCurrentPosition();
if(oTime == 0){
songPrgs.setMax(eTime);
}
songTime.setText(String.format("%d dk, %d sn", TimeUnit.MILLISECONDS.toMinutes(eTime),
TimeUnit.MILLISECONDS.toSeconds(eTime) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS. toMinutes(eTime))) );
startTime.setText(String.format("%d dk, %d sn", TimeUnit.MILLISECONDS.toMinutes(sTime),
TimeUnit.MILLISECONDS.toSeconds(sTime) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS. toMinutes(sTime))) );
songPrgs.setProgress(sTime);
hdlr.postDelayed(UpdateSongTime, 100);
pausebtn.setEnabled(true);
playbtn.setEnabled(false);
}
});
pausebtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mPlayer.pause();
pausebtn.setEnabled(false);
playbtn.setEnabled(true);
Toast.makeText(getApplicationContext(),"One Duraklatıldı", Toast.LENGTH_SHORT).show();
}
});
forwardbtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if((sTime + fTime) <= eTime)
{
sTime = sTime + fTime;
mPlayer.seekTo(sTime);
}
else
{
Toast.makeText(getApplicationContext(), "Daha fazla ileri sarılamaz", Toast.LENGTH_SHORT).show();
}
if(!playbtn.isEnabled()){
playbtn.setEnabled(true);
}
}
});
backwardbtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if((sTime - bTime) > 0)
{
sTime = sTime - bTime;
mPlayer.seekTo(sTime);
}
else
{
Toast.makeText(getApplicationContext(), "Daha fazla geri sarılamaz", Toast.LENGTH_SHORT).show();
}
if(!playbtn.isEnabled()){
playbtn.setEnabled(true);
}
}
});
}
public Runnable UpdateSongTime = new Runnable() {
#Override
public void run() {
sTime = mPlayer.getCurrentPosition();
startTime.setText(String.format("%d dk, %d sn", TimeUnit.MILLISECONDS.toMinutes(sTime),
TimeUnit.MILLISECONDS.toSeconds(sTime) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(sTime))) );
songPrgs.setProgress(sTime);
hdlr.postDelayed(this, 100);
songPrgs.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
#Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
#Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
#Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
if(mPlayer != null && fromUser){
mPlayer.seekTo(progress); // clear ' * 1000 '
}
}
});
}
};
public void onBackPressed(){
mPlayer.stop();
finish();
}
//Setting View Pager
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFrag(new FirstFragment("Android"), "Android");
adapter.addFrag(new SecondFragment("Ios"), "Ios");
viewPager.setAdapter(adapter);
}
//View Pager fragments setting adapter class
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();//fragment arraylist
private final List<String> mFragmentTitleList = new ArrayList<>();//title arraylist
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
#Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
#Override
public int getCount() {
return mFragmentList.size();
}
//adding fragments and title method
public void addFrag(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
#Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
}
FirstFragment
public class FirstFragment extends Fragment {
private View view;
private String title;//String for tab title
private String ebaka;
// Intent it = getActivity().getIntent();
// String isim = getActivity().getIntent().getStringExtra("FOO");
// Bundle bundle = getActivity().getIntent().getExtras();
// String value = bundle.getString("key1");
private static RecyclerView recyclerView;
public FirstFragment() {
}
#SuppressLint("ValidFragment")
public FirstFragment(String title) {
this.title = title;//Setting tab title
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
view = inflater.inflate(R.layout.dummy_fragment, container, false);
// getActivity().getActionBar().setTitle(title);
setRecyclerView();
return view;
}
//Setting recycler view
private void setRecyclerView() {
recyclerView = (RecyclerView) view
.findViewById(R.id.recyclerView);
recyclerView.setHasFixedSize(true);
recyclerView
.setLayoutManager(new LinearLayoutManager(getActivity()));//Linear Items
// String[] eArray=getActivity().getResources().getStringArray(R.array.books);
//
String[] ebaka=getActivity().getResources().getStringArray(R.array.bakara);
ArrayList<String> arrayList = new ArrayList<>();
// arrayList.add("cdscsdc");
for (int i = 0; i < ebaka.length; i++) {
arrayList.add(ebaka[i]);
}
RecyclerView_Adapter adapter = new RecyclerView_Adapter(getActivity(), arrayList);
recyclerView.setAdapter(adapter);// set adapter on recyclerview
}
}
RecyclerView_Adapter
public class RecyclerView_Adapter extends RecyclerView.Adapter<DemoViewHolder> {
private ArrayList<String> arrayList;
private Context context;
public RecyclerView_Adapter(Context context,
ArrayList<String> arrayList) {
this.context = context;
this.arrayList = arrayList;
this.arrayList = arrayList;
}
#Override
public int getItemCount() {
return (null != arrayList ? arrayList.size() : 0);
}
#Override
public void onBindViewHolder(DemoViewHolder holder,
int position) {
Typeface customTypeOne = Typeface.createFromAsset(context.getAssets(), "arial.ttf");
final DemoViewHolder mainHolder = (DemoViewHolder) holder;
//Setting text over textview
mainHolder.title.setText(arrayList.get(position));
mainHolder.title.setTypeface(customTypeOne); // With this code i change font, but it is changing whole apps font. i don't need that.
}
#Override
public DemoViewHolder onCreateViewHolder(
ViewGroup viewGroup, int viewType) {
LayoutInflater mInflater = LayoutInflater.from(viewGroup.getContext());
ViewGroup mainGroup = (ViewGroup) mInflater.inflate(
R.layout.item_row, viewGroup, false);
DemoViewHolder mainHolder = new DemoViewHolder(mainGroup) {
#Override
public String toString() {
return super.toString();
}
};
return mainHolder;
}
}
DemoViewHolder
public abstract class DemoViewHolder extends RecyclerView.ViewHolder {
public TextView title;
public DemoViewHolder(View view) {
super(view);
this.title = (TextView) view.findViewById(R.id.cardTitle);
}
}

Update your adapter constructor and onBindViewHolder():
public class RecyclerView_Adapter extends RecyclerView.Adapter<DemoViewHolder> {
private ArrayList<String> arrayList;
private Context context;
//add this
private String comingFrom;
//constructor
public RecyclerView_Adapter(Context context, ArrayList<String> arrayList, String comingFrom) {
this.context = context;
this.arrayList = arrayList;
this.arrayList = arrayList;
this.comingFrom = comingFrom;
}
........
........
#Override
public void onBindViewHolder(DemoViewHolder holder,int position) {
Typeface customTypeOne = Typeface.createFromAsset(context.getAssets(),"arial.ttf");
final DemoViewHolder mainHolder = (DemoViewHolder) holder;
//Setting text over textview
mainHolder.title.setText(arrayList.get(position));
//check in which fragment you are
if(comingFrom.equals("fragment_one")){
//in fragment one set some font
mainHolder.title.setTypeface(........);
}else{
//in fragment two set some other font
mainHolder.title.setTypeface(.........);
}
}
............
}
When initializing adapter from FirstFragment:
.......
.......
RecyclerView_Adapter adapter = new RecyclerView_Adapter(getActivity(), arrayList, "fragment_one");
recyclerView.setAdapter(adapter);// set adapter on recyclerview
........
When initializing adapter from SecondFragment:
.......
.......
RecyclerView_Adapter adapter = new RecyclerView_Adapter(getActivity(), arrayList, "fragment_two");
recyclerView.setAdapter(adapter);// set adapter on recyclerview
........

Removing objects from listView in custom adapter

So I have an activity with a listview inside of it and when I click a delete button I want to remove the object from the list. I already know how to find which object I want to remove and remove it from the list that populates my array adapter but I am not sure what i need to do to call the .notifyDataSetChanged() routine which Is what I believe I need to do. Any help would be much appreciated.
My activity code
public class MealActivity2 extends AppCompatActivity {
private ListView lv;
public static ArrayList<Model> modelArrayList;
private CustomAdapter customAdapter;
private Button btnnext;
private String[] fruitlist = new String[]{"Apples", "Oranges", "Potatoes", "Tomatoes","Grapes"};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_meal2);
Integer numFoodItems = ((Globals) getApplication()).getLength();
lv = (ListView) findViewById(R.id.lv);
btnnext = (Button) findViewById(R.id.next);
modelArrayList = getModel(numFoodItems);
customAdapter = new CustomAdapter(this);
lv.setAdapter(customAdapter);
btnnext.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(MealActivity2.this,NextActivity.class);
startActivity(intent);
}
});
}
// this builds the array list of model opbjects that will be used by the adapter to populate
// the list view dynamically
private ArrayList<Model> getModel(Integer length){
ArrayList<Model> list = new ArrayList<>();
for(int i = 0; i < length; i++){
FoodDetailsPost food = ((Globals) getApplication()).getFoodList().get(i);
Model model = new Model();
model.setNumber(((Globals) getApplication()).getServing(i));
model.setFruit(food.getDescription());
list.add(model);
}
return list;
}
}
and here is my custom adapter code if you look near the end at the last comment that is where i need to notify my activity that I have changed the contents of the list and should update the displaying items
public class CustomAdapter extends BaseAdapter {
private Context context;
private adapterGlobalAccess g = new adapterGlobalAccess();
private CustomAdapter customAdapter;
public CustomAdapter(Context context) {
this.context = context;
}
#Override
public int getViewTypeCount() {
return getCount();
}
#Override
public int getItemViewType(int position) {
return position;
}
#Override
public int getCount() {
return MealActivity2.modelArrayList.size();
}
#Override
public Object getItem(int position) {
return MealActivity2.modelArrayList.get(position);
}
#Override
public long getItemId(int position) {
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder(); LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.lv_item, null, true);
holder.tvFruit = (TextView) convertView.findViewById(R.id.animal);
holder.tvnumber = (TextView) convertView.findViewById(R.id.number);
holder.btn_edit = (Button) convertView.findViewById(R.id.plus);
holder.btn_minus = (Button) convertView.findViewById(R.id.minus);
convertView.setTag(holder);
}else {
// the getTag returns the viewHolder object set as a tag to the view
holder = (ViewHolder)convertView.getTag();
}
holder.tvFruit.setText(MealActivity2.modelArrayList.get(position).getFruit());
holder.tvnumber.setText(String.valueOf(MealActivity2.modelArrayList.get(position).getNumber()));
holder.btn_edit.setTag(R.integer.btn_plus_view, convertView);
holder.btn_edit.setTag(R.integer.btn_plus_pos, position);
holder.btn_edit.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
View tempview = (View) holder.btn_edit.getTag(R.integer.btn_plus_view);
TextView tv = (TextView) tempview.findViewById(R.id.number);
Integer pos = (Integer) holder.btn_edit.getTag(R.integer.btn_plus_pos);
Double number = Double.parseDouble(tv.getText().toString()) + 1;
tv.setText(String.valueOf(number));
MealActivity2.modelArrayList.get(pos).setNumber(number);
g.setServing(pos, number);
}
});
holder.btn_minus.setTag(R.integer.btn_minus_view, convertView);
holder.btn_minus.setTag(R.integer.btn_minus_pos, position);
holder.btn_minus.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
View tempview = (View) holder.btn_minus.getTag(R.integer.btn_minus_view);
TextView tv = (TextView) tempview.findViewById(R.id.number);
Integer pos = (Integer) holder.btn_minus.getTag(R.integer.btn_minus_pos);
((Globals) context.getApplicationContext()).remove(pos);
MealActivity2.modelArrayList.remove(pos);
// i need to do .notifyDataSetChanged() here but im not sure how
}
});
return convertView;
}

You can just use a interface to solve the problem
CustomAdapter
public class CustomAdapter extends BaseAdapter {
...
private CustomAdapterListener listener;
interface CustomAdapterListener{
void itemClick();
}
public CustomAdapter(Context context, CustomAdapterListener listener) {
this.context = context;
this.listener = listener;
}
MainActivity2
public class MealActivity2 extends AppCompatActivity implements CustomAdapterListener {
...
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_meal2);
...
customAdapter = new CustomAdapter(this, this);
}
#Override
public void itemClick() {
// you can do .notifyDataSetChanged() here
}
after that you can use listener to callback to Activity and do anything you want
CustomAdapter
#Override
public void onClick(View v) {
listener.itemClick();
// i need to do .notifyDataSetChanged() here but im not sure how
}

Display no. of items of a recyclerview in a textview in android studio

I want to display number of total items of my recyclerview in a textview. If new item is added or deleted that textview should be update. And also calculate total price of items in a list of Items in a recyclerview and display in a textview below recyclerview list.
Below is my recyclerview adapter:
public class CartAdapter extends RecyclerView.Adapter<CartAdapter.ViewHolder> {
private List<ProductView.Data> productData = Collections.emptyList();
static List<ProductModel> productModelList;
static Context context;
DatabaseHandler mDatabaseHandler;
public CartAdapter(Context context, List<ProductModel> dbList ){
this.productModelList = new ArrayList<ProductModel>();
this.context = context;
this.productModelList = dbList;
mDatabaseHandler = new DatabaseHandler( context );
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
Context context = parent.getContext();
LayoutInflater inflater = LayoutInflater.from(context);
// Inflate the custom layout
View cartListView = inflater.inflate(R.layout.list_item_cart, parent, false);
// Return a new holder instance
ViewHolder viewHolder = new ViewHolder(context,cartListView);
return viewHolder;
}
#Override
public void onBindViewHolder(ViewHolder holder, final int position) {
holder.tvProductName.setText(productModelList.get(position).getTitle());
holder.tvProductPrice.setText(productModelList.get(position).getPrice());
Glide
.with(context)
.load(productModelList.get(position).getImageUrl())
.into(holder.imgProduct);
// holder.tvProductStatus.setText(productModelList.get(position).getIsAvailable());
holder.tvSize.setText(productModelList.get(position).getSize());
holder.tvProductQuantity.setText(Integer.toString(productModelList.get(position).getQuantity()));
holder.tvColor.setText(productModelList.get(position).getColor());
//holder.tvMaterial.setText(productModelList.get(position).getMaterial());
holder.imgDelete.setClickable(true);
holder.imgDelete.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String idForDelete = String.valueOf(productModelList.get(position).getVariantId());
mDatabaseHandler.deleteARow(idForDelete);
productModelList.remove(position);
notifyItemRemoved(position);
notifyItemRangeChanged(position,productModelList.size());
}
});
}
#Override
public int getItemCount() {
return productModelList.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
TextView tvProductName, tvProductPrice, tvProductQuantity,tvColor,
tvSize;
ImageView imgProduct;
ImageButton imgDelete;
Context context;
public ViewHolder(Context mContext, View itemView) {
super(itemView);
this.tvProductName = (TextView) itemView.findViewById(R.id.tv_cart_product_name);
this.tvProductPrice = (TextView) itemView.findViewById(R.id.tv_cart_product_price);
this.tvProductQuantity = (TextView) itemView.findViewById(R.id.tv_cart_product_Quantity);
this.imgProduct = (ImageView) itemView.findViewById(R.id.img_cart_item_product);
this.tvColor = (TextView)itemView.findViewById(R.id.tv_color);
this.tvSize = (TextView) itemView.findViewById(R.id.tv_size);
this.imgDelete = (ImageButton) itemView.findViewById(R.id.img_cart_delete);
// store the context ///
this.context = mContext;
}
}
and java Class:
public class CartActivity extends AppCompatActivity {
DatabaseHandler helper;
List<ProductModel> dbList;
RecyclerView mRecyclerView;
Toolbar toolbar;
Button btnCheckout, btnContinueShopping;
TextView tvTotalNoOfItems, tvTotalPrice;
String p;
String i;
private RecyclerView.Adapter mAdapter;
private RecyclerView.LayoutManager mLayoutManager;
#Override
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_cart);
p = getIntent().getStringExtra("variant_id");
i = getIntent().getStringExtra("product_id");
Bundle extras = getIntent().getExtras();
if (extras != null) {
p = extras.getString("variant_id");
i= extras.getString("product_id");
}
toolbar = (Toolbar) findViewById(R.id.customToolBar);
setSupportActionBar(toolbar);
setTitle("Check-out");
toolbar.setTitleTextColor(Color.BLACK);
toolbar.setNavigationIcon(R.drawable.ic_arrow_back_black);
toolbar.setNavigationOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
onBackPressed();
}
});
helper = new DatabaseHandler(this);
dbList= new ArrayList<ProductModel>();
dbList = helper.getDataFromDB();
mRecyclerView = (RecyclerView)findViewById(R.id.rv_cart_item_list);
// use a linear layout manager
mLayoutManager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(mLayoutManager);
mAdapter = new CartAdapter(this,dbList);
mRecyclerView.setAdapter(mAdapter);
tvTotalNoOfItems = (TextView)findViewById(R.id.tvTotalCartItems);
tvTotalPrice = (TextView)findViewById(R.id.tvTotalCartItemsPrice);
String totalPrice = "";
for (int i = 0; i<dbList.size(); i++)
{
totalPrice = totalPrice + dbList.get(i).getPrice().toString();
}
tvTotalPrice.setText(totalPrice);
btnContinueShopping = (Button)findViewById(R.id.btnBackToProductActivity);
btnContinueShopping.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent launchCOllectionActivity = new Intent(CartActivity.this, CollectionActivity.class);
startActivity(launchCOllectionActivity);
finish();
}
});
btnCheckout = (Button)findViewById(R.id.btn_checkout);
btnCheckout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent launchCheckoutActivity = new Intent(CartActivity.this,CheckoutActivity.class);
startActivity(launchCheckoutActivity);
}
});
}
}

First, add following getter to your adapter:
public List<ProductModel> getItems(){
return productModelList;
}
Then, you can subscribe on adapter data change and do the following:
mAdapter.registerAdapterDataObserver(new RecyclerView.AdapterDataObserver() {
#Override
public void onChanged () {
tvTotalNoOfItems.setText(mAdapter.getItemCount());
String totalPrice = "";
for (int i = 0; i < ((CartAdapter)mAdapter).getItems().size(); i++) {
totalPrice = totalPrice + ((CartAdapter)mAdapter).getItems().get(i).getPrice().toString();
}
tvTotalPrice.setText("" + totalPrice);
}
});

just add this line below the adapter set line
tvTotalNoOfItems.setText(mAdapter.getCount());
and add this into you adapter class where you delete action perform
String totalPrice = "";
((CartActivity)context).tvTotalNoOfItems.setText(getCount());
for (int i = 0; i<productModelList.size(); i++)
{
totalPrice = totalPrice + productModelList.get(i).getPrice().toString();
}
((CartActivity)context).tvTotalPrice.setText(""+totalPrice);
Just public you textview like this
public TextView tvTotalNoOfItems, tvTotalPrice;

I've made my own ListView Adapter but no data is printed

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);
}

How to refresh viewpager after delete operation

In my app ,i used view pager to show my image gallery .
after deleteing any image from my gallery , view pager should get updated.
My Activity
public class FullScreenViewActivityForSelfImage extends Activity{
#SuppressWarnings("unused")
private Utils utils;
private FullScreenImageAdapterForSelfImage adapter;
private static ViewPager viewPager;
DatabaseHelper db;
ArrayList<Image> aryimages;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fullscreen_view);
db=new DatabaseHelper(this);
viewPager = (ViewPager) findViewById(R.id.pager);
aryimages= db.getimages();
Intent i = getIntent();
int position = i.getIntExtra("position", 0);
adapter = new FullScreenImageAdapterForSelfImage(FullScreenViewActivityForSelfImage.this,
aryimages,this);
viewPager.setAdapter(adapter);
// displaying selected image first
viewPager.setCurrentItem(position);
}
public static ViewPager getAdapter() {
return viewPager;
}
}
My Adapter Class
public class FullScreenImageAdapterForSelfImage extends PagerAdapter
{
private Activity _activity;
private ArrayList<Image> _imagePaths;
ArrayList<Image> aryimages;
public ImageListAdapter ImageListAdapter;
private LayoutInflater inflater;
private Context context;
int columnWidth,width,cellWidth,padding,height;
DatabaseHelper db;
int i;
String id,name;
// constructor
public FullScreenImageAdapterForSelfImage(Activity activity,
ArrayList<Image> aryimages,Context context) {
this._activity = activity;
this._imagePaths = aryimages;
this.context = context;
db= new DatabaseHelper(_activity);
Display display = activity.getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
width = size.x;
height = size.y;
}
My Adapter where delete service is called
btndel.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(v.getContext());
alertDialog.setTitle("Confirm Delete...");
alertDialog.setMessage("You are about to delete all images of this product continue");
alertDialog.setPositiveButton("YES",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int which) {
// Write your code here to execute after dialog
name = _imagePaths.get(position).Image_name.toString();
String imei=db.SelectImeiNo();
id=db.getidbyname(name);
System.out.println("selected imei = "+imei);
System.out.println("selected id = "+id);
dialog.cancel();
WebServiceTask wst = new WebServiceTask(WebServiceTask.POST_TASK, context , "Deleting Image...");
wst.execute(new String[] { Service_url });
}
});
In Adapter i tried to refresh
public void handleResponse(String response) {
System.out.println("handle REsponse...got result..."+response);
if(response.equalsIgnoreCase("0"))
{
System.out.println("!!!!!!!!!!Server Busy try again latter!!!!!!!!!!!!!!!!");
Toast.makeText(context.getApplicationContext(), "Server Busy try again latter", Toast.LENGTH_LONG).show();
}
else if(response.equalsIgnoreCase("1"))
{
System.out.println("!!!!!!!!!!!!Image deleted!!!!!!!!!!!!!!!!!!!");
Toast.makeText(context.getApplicationContext(), "Image deleted", Toast.LENGTH_LONG).show();
db.deleteImageSelected(id);
_imagePaths.remove(i);
ImageListAdapter.notifyDataSetChanged();
}
}
Image Adapter
public class ImageListAdapter extends BaseAdapter {
//private Context context;
private ArrayList<Image> Img;
private LayoutInflater inflater = null;
public ImageListAdapter(Context context, ArrayList<Image> Image) {
// this.context = context;
this.Img = Image;
inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
return Img.size();
}
#Override
public Object getItem(int position) {
return position;
}
#Override
public long getItemId(int position) {
return position;
}
#SuppressLint("InflateParams")
#SuppressWarnings("unused")
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = null;
if (convertView == null) {
view = inflater.inflate(R.layout.imageshow, null);
} else {
view = convertView;
}
ImageView iv= (ImageView) view.findViewById(R.id.imageshowView1);
TextView name= (TextView) view.findViewById(R.id.Imageshownametv);
TextView id= (TextView) view.findViewById(R.id.Imageshowidtv);
TextView desc= (TextView) view.findViewById(R.id.Imageshowimagedesc);
id.setText(Img.get(position).Image_id);
byte[] I= Img.get(position).image;
System.out.println("Byte array of the image "+I);
Bitmap bp=BitmapFactory.decodeByteArray(I, 0, I.length);
iv.setImageBitmap(bp);
return view;
}
}
But it is not done
so please help me..