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How to add image to arrayList in recyclerview

I'm trying to add an image to a recyclerview after getting the image from either the gallery or the camera. Below is the code that I have.
Main.java
#Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.home_activity);
itemImage = findViewById(R.id.image_holder);
itemName = findViewById(R.id.add_item_name);
itemPrice = findViewById(R.id.add_price);
itemDesc = findViewById(R.id.add_desc);
// Initialize Firebase Auth
mAuth = FirebaseAuth.getInstance();
addPhotoButton = findViewById(R.id.getCameraBtn);
addFileButton = findViewById(R.id.getGalleryBtn);
imageView = findViewById(R.id.image_holder);
addPhotoButton.setOnClickListener(this);
addFileButton.setOnClickListener(this);
itemList = new ArrayList<Item>();
recyclerView = findViewById(R.id.recyclerView);
recyclerView.setHasFixedSize(true);
layoutManager = new LinearLayoutManager(this);
adapter = new Adapter(itemList);
adapter.notifyItemInserted(itemList.size()-1);
recyclerView.setLayoutManager(layoutManager);
recyclerView.setAdapter(adapter);
}
// log out back to start page
public void goToStart(View view){
Intent intent = new Intent(this, MainActivity.class);
startActivity(intent);
}
#Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.getCameraBtn:
//post a photo from the camera
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(takePictureIntent, CAMERA_CODE);
break;
case R.id.getGalleryBtn:
//post an image
Intent galleryIntent = new Intent(Intent.ACTION_GET_CONTENT);
galleryIntent.setType("image/*"); //anything that is image related
startActivityForResult(galleryIntent, GALLERY_CODE);
break;
}
}
#Override
protected void onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == GALLERY_CODE && resultCode == RESULT_OK) {
if (data != null) {
imageUri = data.getData(); //we have the actual path
imageView.setImageURI(imageUri); //show image
}
} else if (requestCode == CAMERA_CODE && resultCode == RESULT_OK) {
Bundle extras = data.getExtras();
Bitmap imageBitmap = (Bitmap) extras.get("data");
imageView.setImageBitmap(imageBitmap);
}
}
public void addItem(View view){
itemList.add(new Item(R.drawable.ic_logo, itemName.getText().toString(), itemPrice.getText().toString(), itemDesc.getText().toString()));
adapter = new Adapter(itemList);
recyclerView.setAdapter(adapter);
}
Adapter.java
public class Adapter extends RecyclerView.Adapter<Adapter.ViewHolder>{
private ArrayList<Item> ItemList;
public static class ViewHolder extends RecyclerView.ViewHolder{
public ImageView item_image;
public TextView item_name;
public TextView item_desc;
public TextView item_price;
public ViewHolder(#NonNull View itemView) {
super(itemView);
item_image = itemView.findViewById(R.id.item_image);
item_name = itemView.findViewById(R.id.item_name);
item_desc = itemView.findViewById(R.id.desc);
item_price = itemView.findViewById(R.id.price);
}
}
public Adapter(ArrayList<Item> itemList) {ItemList = itemList;}
#NonNull
#Override
public ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_items, parent, false);
ViewHolder vh = new ViewHolder(v);
return vh;
}
#Override
public void onBindViewHolder(#NonNull ViewHolder holder, int position) {
Item currentItem = ItemList.get(position);
holder.item_image.setImageResource(currentItem.getItemImage());
holder.item_name.setText(currentItem.getItemName());
holder.item_desc.setText(currentItem.getItemDesc());
holder.item_price.setText(currentItem.getItemPrice());
}
#Override
public int getItemCount() {
return ItemList.size();
}
}
Item.java
public class Item {
private int itemImage;
private String itemName;
private String itemDesc;
private String itemPrice;
public Item(int itemImage, String itemName, String itemDesc, String itemPrice){
this.itemImage = itemImage;
this.itemName = itemName;
this.itemDesc = itemDesc;
this.itemPrice = itemPrice;
}
public int getItemImage(){return itemImage;}
public String getItemName(){return itemName;}
public String getItemDesc(){return itemDesc;}
public String getItemPrice(){return itemPrice;}
}
I am able to get the image from the camera or gallery and display it on an image view. The problem is, I don't really know how I could add this image to the arrayList and the recyclerview. All examples I found were showing how to add images from the drawable file which is not what I'm looking for. Thank you in advance.

RecyclerView: different ViewType by different button

I have a recycler view to show an activity timeline and three floating buttons that click to add activity. How can I code three buttons to a different view? How can I pass the condition to the Adapter?
Now I can show only one viewType.
thx a lot.
Adapter.java
public class TripAdapter extends RecyclerView.Adapter<TripAdapter.TripHolder> {
private List<Trip> trips = new ArrayList<>();
private OnItemClickListener listener;
#NonNull
#Override
public TripHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.trip_item, parent, false);
return new TripHolder(itemView);
}
#Override
public void onBindViewHolder(#NonNull TripHolder holder, int position) {
Trip currentTrip = trips.get(position);
holder.textViewLodgingTitle.setText(currentTrip.getLodgingTitle());
holder.textTextViewLodgingCheckInDateTime.setText(currentTrip.getLodgingCheckInDateTime());
holder.textTextViewLodgingCheckOutDateTime.setText(currentTrip.getLodgingCheckOutDateTime());
holder.textViewLodgingAddress.setText(currentTrip.getLodgingAddress());
}
#Override
public int getItemCount() {
return trips.size();
}
public void setTrips(List<Trip> trips) {
this.trips = trips;
notifyDataSetChanged();
}
public Trip getTripAt(int position) {
return trips.get(position);
}
class TripHolder extends RecyclerView.ViewHolder {
//lodging
private TextView textViewLodgingTitle;
private TextView textTextViewLodgingCheckInDateTime;
private TextView textTextViewLodgingCheckOutDateTime;
private TextView textViewLodgingAddress;
private TextView textViewLodgingPhone;
private TextView textViewLodgingWebsite;
private TextView textViewLodgingEmail;
public TripHolder(#NonNull View itemView) {
super(itemView);
context = itemView.getContext();
textViewLodgingTitle = itemView.findViewById(R.id.text_view_title);
textTextViewLodgingCheckInDateTime = itemView.findViewById(R.id.text_view_start_date_time);
textTextViewLodgingCheckOutDateTime = itemView.findViewById(R.id.text_view_end_date_time);
textViewLodgingAddress = itemView.findViewById(R.id.text_view_description);
itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
int position = getAdapterPosition();
if (listener != null && position != RecyclerView.NO_POSITION) {
listener.onItemClick(trips.get(position));
}
}
});
}
}
public interface OnItemClickListener {
void onItemClick(Trip trip);
}
public void setOnItemClickListener(OnItemClickListener listener) {
this.listener = listener;
}
}
MainActivity.java
//adapter
RecyclerView recyclerView = findViewById(R.id.recycler_view);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
recyclerView.setHasFixedSize(true);
final TripAdapter adapter = new TripAdapter();
recyclerView.setAdapter(adapter );
tripViewModel = new ViewModelProvider(this, ViewModelProvider.AndroidViewModelFactory.getInstance(this.getApplication())).get(TripViewModel.class);
tripViewModel.getAllTrips().observe(this, new Observer<List<Trip>>() {
#Override
public void onChanged(#Nullable List<Trip> trips) {
adapter.setTrips(trips);
}
});
//this on onActivityResult()
else if (requestCode == ADD_LODGING && resultCode == Activity.RESULT_OK) {
//get data from lodging activity
String lodgingTitle = data.getStringExtra(LodgingEditActivity.EXTRA_LODGING_TITLE);
String lodgingCheckInDateTime = data.getStringExtra(LodgingEditActivity.EXTRA_LODGING_CHECK_IN_DATE_TIME);
String lodgingCheckOutDateTime = data.getStringExtra(LodgingEditActivity.EXTRA_LODGING_CHECK_OUT_DATE_TIME);
String lodgingDescription = data.getStringExtra(LodgingEditActivity.EXTRA_LODGING_DESCRIPTION);
String lodgingAddress = data.getStringExtra(LodgingEditActivity.EXTRA_LODGING_ADDRESS);
String lodgingPhone = data.getStringExtra(LodgingEditActivity.EXTRA_LODGING_PHONE);
String lodgingWebsite = data.getStringExtra(LodgingEditActivity.EXTRA_LODGING_WEBSITE);
String lodgingEmail = data.getStringExtra(LodgingEditActivity.EXTRA_LODGING_EMAIL);
String lodgingImagePath = "test";
Trip lodging = new Trip(lodgingTitle, lodgingCheckInDateTime, lodgingCheckOutDateTime,lodgingDescription, lodgingAddress, lodgingPhone, lodgingWebsite, lodgingEmail,lodgingImagePath);
tripViewModel.insert(lodging);
Toast.makeText(this, "lodging save", Toast.LENGTH_SHORT).show();
}
My application I adapt from codinginflow channel.
https://codinginflow.com/tutorials/android/room-viewmodel-livedata-recyclerview-mvvm/part-1-introduction

Recyclerview multi view items with button

I want to create a multi-view on Recylcerview by clicking the button(different view for each button). how to write code in Adapter Class or Condition to view it differently.
this is my code.
Adapter Class
public class TripAdapter extends RecyclerView.Adapter<TripAdapter.TripHolderOne> {
private List trips = new ArrayList<>();
#NonNull
#Override
public TripHolderOne onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.trip_item, parent, false);
return new TripHolderOne(itemView);
}
#Override
public int getItemViewType(int position) {
return super.getItemViewType(position);
}
#Override
public void onBindViewHolder(#NonNull TripHolderOne holder, int position) {
Trip currentTrip = trips.get(position);
holder.textViewTripTitle.setText(currentTrip.getTripTitle());
holder.textViewDescription.setText(currentTrip.getDescription());
holder.textViewPriority.setText(String.valueOf(currentTrip.getPriority()));
holder.textViewStartDateTime.setText(currentTrip.getStartDateTime());
}
#Override
public int getItemCount() {
return trips.size();
}
public void setTrips(List<Trip> trips) {
this.trips = trips;
notifyDataSetChanged();
}
public Trip getTripAt(int position) {
return trips.get(position);
}
class TripHolderOne extends RecyclerView.ViewHolder {
private TextView textViewTripTitle;
private TextView textViewDescription;
private TextView textViewPriority;
private TextView textViewStartDateTime;
public TripHolderOne(#NonNull View itemView) {
super(itemView);
textViewTripTitle = itemView.findViewById(R.id.text_view_title);
textViewDescription = itemView.findViewById(R.id.text_view_description);
textViewPriority = itemView.findViewById(R.id.text_view_priority);
textViewStartDateTime = itemView.findViewById(R.id.text_view_start_date_time);
}
}
MainActivity Class
RecyclerView recyclerView = findViewById(R.id.recycler_view);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
recyclerView.setHasFixedSize(true);
final TripAdapter adapter = new TripAdapter();
recyclerView.setAdapter(adapter);
tripViewModel = new ViewModelProvider(this, ViewModelProvider.AndroidViewModelFactory.getInstance(this.getApplication())).get(TripViewModel.class);
tripViewModel.getAllTrips().observe(this, new Observer<List<Trip>>() {
#Override
public void onChanged(#Nullable List<Trip> trips) {
adapter.setTrips(trips);
}
});
And inside MainActivity also have function onActivityResult.
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == ADD_TRANSPORTATION && resultCode == Activity.RESULT_OK){
String title = data.getStringExtra(AddTripActivity.EXTRA_TITLE);
String description = data.getStringExtra(AddTripActivity.EXTRA_DESCRIPTION);
int priority = data.getIntExtra(AddTripActivity.EXTRA_PRIORITY, 1);
String startDate = data.getStringExtra(AddTripActivity.EXTRA_START_DATE);
String startTime = data.getStringExtra(AddTripActivity.EXTRA_START_TIME);
String startDateTime = data.getStringExtra(AddTripActivity.EXTRA_START_DATE_TIME);
Log.d("TAG", "Text from MainActivity2" + data.getStringExtra("text"));
Trip trip = new Trip(title, description, priority, startDate,startTime,startDateTime);
tripViewModel.insert(trip);
Toast.makeText(this, "trip saved", Toast.LENGTH_SHORT).show();
}

How to transfer string from TextView to main activity with onClick listener

I want to create an onclick listener that reads the String from one TextView and then I somehow pass that string onto the main activity in order to open a third activity
So my main activity looks like this
public class AdvancedResults extends AppCompatActivity {
private RecyclerView mRecyclerView;
private AdvancedAdapter mAdapter;
private RecyclerView.LayoutManager mLayoutManager;
private ArrayList<String> mNames = new ArrayList<>();
private ArrayList<String> mImageUrls = new ArrayList<>();
private ArrayList<String> saved_recipes_with_ingredients = new ArrayList<>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_advanced_results);
advancedList.add(new AdvancedItem(R.drawable.ic_android, "test1", "test2");
advancedList.add(new AdvancedItem(R.drawable.ic_android, "test3", "test4");
mRecyclerView = findViewById(R.id.recyclerView1);
mRecyclerView.setHasFixedSize(true);
mLayoutManager = new LinearLayoutManager(this);
mAdapter = new AdvancedAdapter(advancedList);
mRecyclerView.setLayoutManager(mLayoutManager);
mRecyclerView.setAdapter(mAdapter);
mAdapter.setOnItemClickListener(new AdvancedAdapter.OnItemClickListener() {
#Override
public void onItemClick(int position) {
// I want to open a new activity and append the string from the TextView here (maybe with get/set)
}
});
}
And my recycler adapter looks like this
public class AdvancedAdapter extends RecyclerView.Adapter<AdvancedAdapter.AdvancedViewHolder> {
private ArrayList<AdvancedItem> mAdvancedList;
private OnItemClickListener mListener;
public interface OnItemClickListener {
void onItemClick(int position);
}
public void setOnItemClickListener(OnItemClickListener listener) {
mListener = listener;
}
public static class AdvancedViewHolder extends RecyclerView.ViewHolder {
public ImageView mImageView;
public TextView mTextView1;
public TextView mTextView2;
public AdvancedViewHolder(View itemView, final OnItemClickListener listener) {
super(itemView);
mImageView = itemView.findViewById(R.id.imageViewADV);
mTextView1 = itemView.findViewById(R.id.textViewADV1);
mTextView2 = itemView.findViewById(R.id.textViewADV2);
itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (listener != null) {
int position = getAdapterPosition();
//how do I get the string from the TextView and pass it onto the main class?
if (position != RecyclerView.NO_POSITION) {
listener.onItemClick(position);
}
}
}
});
}
}
public AdvancedAdapter(ArrayList<AdvancedItem> advancedList) {
mAdvancedList = advancedList;
}
#Override
public AdvancedViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.advanced_item, parent, false);
AdvancedViewHolder evh = new AdvancedViewHolder(v, mListener);
return evh;
}
#Override
public void onBindViewHolder(AdvancedViewHolder holder, int position) {
AdvancedItem currentItem = mAdvancedList.get(position);
holder.mImageView.setImageResource(currentItem.getImageResource());
holder.mTextView1.setText(currentItem.getText1());
holder.mTextView2.setText(currentItem.getText2());
}
#Override
public int getItemCount() {
return mAdvancedList.size();
}
i'm just not sure how im supposed to do that and what method to use.

So if you want the text from the text view you do:
String text = textViewId.getText();
But in your case you want to add the text for each one of the views on the list
So on the adapter how make a on click listener:
if (listener != null) {
int position = getAdapterPosition();
String text = mTextView1.getText();
Intent i = new Intent(getApplicationContext(), YourActitivity.class);
i.putExtra("nameYouWant", text)
startActivity(i);
if (position != RecyclerView.NO_POSITION) {
listener.onItemClick(position);
}
Now on your activity :
String text = intent.getStringExtra("nameYouWant");

You can use interface to pass the second String param. So just add one String param like this -
public interface OnItemClickListener {
void onItemClick(int position, String text);
}
And in adapter pass the string on click of the item along with the position
listener.onItemClick(position, mTextView1.getText().toString());
And in the activity, you will receive the String text, from there you can pass it to ThirdActivity via bundle.
mAdapter.setOnItemClickListener(new AdvancedAdapter.OnItemClickListener() {
#Override
public void onItemClick(int position, String textData) {
Intent i = new Intent(this, ThirdActivity.class);
i.putExtra("TEXT_KEY", textData);
}
});
Hope it will help!!

Sending array list of object between activities with Parcelable

I want to send an array list of object from one activity to another. I am extending my object class with Parcelable and transferred list using intent onActivityResult.
But the list shows null in second activity.
first activity :
public class PlanEventActivity extends AppCompatActivity implements TimePickerDialog.OnTimeSetListener,
DatePickerDialog.OnDateSetListener{
private boolean mHoursMode;
RelativeLayout chooseEvent,time,date;
EditText eventName;
TextView timeTextView,dateTextView,chooseEventText;
static final int CUSTOM_DIALOG_ID = 0;
ListView dialog_ListView;
private ImageView addOrganizer;
static final int PICK_CONTACT_REQUEST = 1;
private ArrayList<contact> mSelectedContacts;
private ListViewAdapter mAdapter;
private ListView mContactsList;
private ArrayList<Integer> selectedItemsPositions;
private boolean mContactListActivity;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_plan_event);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setTitle("");
TextView toolbarTitle = (TextView) toolbar.findViewById(R.id.toolbar_title);
toolbarTitle.setText("MeaVita");
setSupportActionBar(toolbar);
setUpUI();
mAdapter = new ListViewAdapter(this,mSelectedContacts);
mContactsList.setAdapter(mAdapter);
mAdapter.setMode(Attributes.Mode.Single);
mContactsList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
((SwipeLayout)(mContactsList.getChildAt(position - mContactsList.getFirstVisiblePosition()))).open(true);
}
});
}
public void setUpUI()
{
chooseEvent = (RelativeLayout)findViewById(R.id.chooseEventLayout);
time = (RelativeLayout)findViewById(R.id.timeLayout);
date = (RelativeLayout)findViewById(R.id.dateLayout);
eventName = (EditText)findViewById(R.id.editTextEventName);
timeTextView = (TextView)findViewById(R.id.timeTextView);
dateTextView = (TextView)findViewById(R.id.dateTextView);
chooseEventText = (TextView)findViewById(R.id.chooseEventTextView);
addOrganizer = (ImageView)findViewById(R.id.addOrganizer);
mContactsList = (ListView)findViewById(R.id.selectedContactsList);
mSelectedContacts = new ArrayList<>();
contact contact = new contact();
contact.setContactid("1");
contact.setContactName("sid");
mSelectedContacts.add(contact);
contact.setContactid("2");
contact.setContactName("ssss");
mSelectedContacts.add(contact);
addOrganizer.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent pickContactIntent = new Intent(PlanEventActivity.this,ContactList.class);
startActivityForResult(pickContactIntent, PICK_CONTACT_REQUEST);
}
});
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// Check which request we're responding to
if (requestCode == PICK_CONTACT_REQUEST) {
// Make sure the request was successful
if (resultCode == RESULT_OK) {
Bundle bundle = data.getExtras();
mContactListActivity = bundle.getBoolean("contactListActivity",true);
mSelectedContacts = bundle.getParcelableArrayList("selectedContacts");
}
if(mContactListActivity)
{
addOrganizer.setVisibility(View.INVISIBLE);
mContactsList.setVisibility(View.VISIBLE);
}
else {
mContactsList.setVisibility(View.GONE);
}
}
}
Second activity :
public class ContactList extends AppCompatActivity {
private ArrayList<contact> contact_list = null;
private contactAdapter mContactAdapter = null;
private ArrayList<contact> items;
private ArrayList<contact> selectedContacts;
boolean[] isChecked;
Cursor mCursor;
ListView lv;
public int RQS_PICK_CONTACT = 1;
private static final int PERMISSIONS_REQUEST_READ_CONTACTS = 100;
ArrayList<Integer> selectedItemsPositions;
private ImageView done;
private boolean mContactListActivity;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_contacts_list);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setTitle("");
TextView toolbarTitle = (TextView) toolbar.findViewById(R.id.toolbar_title);
toolbarTitle.setText("Select Contacts");
setSupportActionBar(toolbar);
done = (ImageView)findViewById(R.id.done);
contact_list = new ArrayList<contact>();
selectedContacts = new ArrayList<contact>();
lv = (ListView)findViewById(R.id.list);
showContacts();
done.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.d("selectd",String.valueOf(selectedItemsPositions));
mContactListActivity = true;
selectedContacts = new ArrayList<>();//to store selected items
for (Integer pos : selectedItemsPositions) {
selectedContacts.add(items.get(pos));
}
Intent i = new Intent(ContactList.this,PlanEventActivity.class);
Bundle b = new Bundle();
b.putSerializable("selectedContacts",(Serializable) selectedContacts);
i.putExtras(b);
setResult(RESULT_OK, i);
finish();
}
});
}
#SuppressWarnings("unused")
private void getContacts() {
String[] projection = new String[] {
ContactsContract.Contacts.DISPLAY_NAME,
ContactsContract.Contacts.HAS_PHONE_NUMBER,
ContactsContract.Contacts._ID };
mCursor = managedQuery(ContactsContract.Contacts.CONTENT_URI, null, null, null,null);
while (mCursor.moveToNext()) {
contact contact = new contact();
String contactId = mCursor.getString(mCursor.getColumnIndex(ContactsContract.Contacts._ID));
contact.setContactid(mCursor.getString(mCursor.getColumnIndex(ContactsContract.Contacts._ID)));
contact.setContactName(mCursor.getString(mCursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME)));
contact_list.add(contact);
}
isChecked = new boolean[mCursor.getCount()];
for (int i = 0; i < isChecked.length; i++) {
isChecked[i] = false;
}
this.mContactAdapter = new contactAdapter(this, R.layout.contact_list_item, contact_list);
lv.setAdapter(this.mContactAdapter);
// mCursor.close();
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RQS_PICK_CONTACT) {
if (resultCode == RESULT_OK) {
getContacts();
}
}
}
public class contactAdapter extends ArrayAdapter<contact> {
public contactAdapter(Context context, int textViewResourceId, ArrayList<contact> items1) {
super(context, textViewResourceId, items1);
items = items1;
selectedItemsPositions = new ArrayList<>();
}
//to store all selected items position
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder mViewHolder;
if (convertView == null) {
mViewHolder = new ViewHolder();
LayoutInflater vi = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = vi.inflate(R.layout.contact_list_item, parent, false);
mViewHolder.cb = (CheckBox) convertView.findViewById(R.id.checkBox);
mViewHolder.name = (TextView) convertView.findViewById(R.id.name);
mViewHolder.cb.setOnCheckedChangeListener(new OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean ischecked) {
int position = (int) mViewHolder.cb.getTag();
if (ischecked) {
//check whether its already selected or not
if (!selectedItemsPositions.contains(position))
selectedItemsPositions.add(position);
} else {
//remove position if unchecked checked item
selectedItemsPositions.remove((Object) position);
}
}
});
convertView.setTag(mViewHolder);
} else {
mViewHolder = (ViewHolder) convertView.getTag();
}
contact contacts = items.get(position);
mViewHolder.cb.setTag(position);
if (selectedItemsPositions.contains(position))
mViewHolder.cb.setChecked(true);
else
mViewHolder.cb.setChecked(false);
mViewHolder.name.setText(contacts.getContactName());
return convertView;
}
public class ViewHolder {
CheckBox cb;
TextView name;
}
}
#Override
public void onRequestPermissionsResult(int requestCode, String[] permissions,
int[] grantResults) {
if (requestCode == PERMISSIONS_REQUEST_READ_CONTACTS) {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// Permission is granted
getContacts();
} else {
Toast.makeText(this, "Until you grant the permission, we canot display the names", Toast.LENGTH_SHORT).show();
}
}
}
private void showContacts()
{
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && checkSelfPermission(Manifest.permission.READ_CONTACTS) != PackageManager.PERMISSION_GRANTED) {
requestPermissions(new String[]{Manifest.permission.READ_CONTACTS}, PERMISSIONS_REQUEST_READ_CONTACTS);
//After this point you wait for callback in onRequestPermissionsResult(int, String[], int[]) overriden method
}
else {
getContacts();
}
}
}
Object class:
public class contact implements Parcelable {
private String contactName;
private String contactId;
contact(){}
contact(String contactId,String contactName)
{
this.contactId = contactId;
this.contactName = contactName;
}
public contact(Parcel in) {
this();
contactId = in.readString();
contactName = in.readString();
}
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(contactId);
dest.writeString(contactName);
}
public static final Parcelable.Creator<contact> CREATOR = new Parcelable.Creator<contact>()
{
public contact createFromParcel(Parcel in)
{
return new contact(in);
}
public contact[] newArray(int size)
{
return new contact[size];
}
};
public int describeContents() {
// TODO Auto-generated method stub
return 0;
}
public String getContactName() {
return contactName;
}
public void setContactName(String contactName) {
this.contactName = contactName;
}
public String getContactid() {
return contactId;
}
public void setContactid(String contactId) {
this.contactId = contactId;
}
}
Not getting what's going wrong. Can anyone help please. Thank you..

When you receive the results from a startActivityForResult() call, the result Intent is passed into the onActivityResult() method as the last parameter. You're using the Intent returned from getIntent(), which is the Intent used to start the current Activity, so it will not have the extras you're looking for.
In onActivityResult(), get the Bundle from the data Intent passed into the method.
Bundle bundle = data.getExtras();
You'll also need to remove this line in onActivityResult():
mSelectedContacts = bundle.getParcelableArrayList("selectedContacts");
And replace it with:
ArrayList<contact> newContacts = bundle.getParcelableArrayList("selectedContacts");
mSelectedContacts.addAll(newContacts);
mAdapter.notifyDataSetChanged();
And make sure you've changed the b.putSerializable() call in ContactList to b.putParcelableArrayList("selectedContacts", selectedContacts).

USE THIS
Bundle b = this.getIntent().getExtras();
mSelectedContacts = b.getParcelableArrayList("selectedContacts");
INSTEAD OF
Intent i = getIntent();
Bundle bundle = i.getExtras();
mSelectedContacts = i.getParcelableArrayListExtra("selectedContacts");

I have checked your code and get some minor issues,
So may be by fixing it you can get results.
Follow below steps.
(1) In PlanEventActivity file, change onActivityResult by below,
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// Check which request we're responding to
if (requestCode == PICK_CONTACT_REQUEST) {
// Make sure the request was successful
if (resultCode == RESULT_OK) {
Bundle bundle = data.getExtras();
mContactListActivity = bundle.getBoolean("contactListActivity",true);
mSelectedContacts = (ArrayList<contact>) bundle.getSerializable("selectedContacts");
mAdapter.notifyDataSetChanged();
}
if(mContactListActivity)
{
addOrganizer.setVisibility(View.INVISIBLE);
mContactsList.setVisibility(View.VISIBLE);
}
else {
mContactsList.setVisibility(View.GONE);
}
}
As you are getting result properly but without converting it in proper type you will get null, so you need to convert your result parcelable array list in your contact arraylist other wise it will not work. And also after getting list to display in list view you need to notify your adapter for dataset changed. Also you are paassing Serializable object then also get it by getSerializable method.
(2) Implement Serializable instead of parcelable for object, like below
public class contact implements Serializable.
And now try to run your app, almost done you will get result.

Do it like this:
Bundle b = new Bundle();
b.putSerializable("selectedContacts", selectedContacts);
i.putExtras(b);
EDIT 2: Retrieve it by :
Bundle bundle = i.getExtras();
mContactListActivity = i.getBooleanExtra("contactListActivity",true);
mSelectedContacts = (ArrayList<contact>) i.getSerializableExtra("selectedContacts");
And don't forget :
public class contact implements Serializable {...}
EDIT:
REMOVE (Serializable) :
Don't write this :
b.putSerializable("selectedContacts",(Serializable) selectedContacts);
write this :
b.putSerializable("selectedContacts",selectedContacts);