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Android Studio RecyclerView wont show my data when i add toolbar at my `layout.xml` file

I created a page where it will show the firebase data in a RecyclerView. It work but I decided to put a toolbar at the top of the page to have a back function. After I put the toolbar in my layout file, the RecyclerView is not showing any data anymore. I think that my layout XML file is wrong. Thanks in advance for anyone helping.
Actity file
package com.example.attendanceappvqyfyp;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.Toolbar;
import com.example.attendanceappvqyfyp.Interface.itemClickListener;
import com.example.attendanceappvqyfyp.Common.Common;
import com.example.attendanceappvqyfyp.Model.LecturerClass;
import com.example.attendanceappvqyfyp.Model.News;
import com.example.attendanceappvqyfyp.Model.Timetable;
import com.firebase.ui.database.FirebaseRecyclerAdapter;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.example.attendanceappvqyfyp.Common.Common;
public class LecturerClassList extends AppCompatActivity {
RecyclerView recyclerView;
RecyclerView.LayoutManager layoutManager;
FirebaseDatabase database;
DatabaseReference lecturerclass;
DatabaseReference news;
FirebaseRecyclerAdapter<LecturerClass,LecturerClassViewHolder> adapter;
TextView newscourse, newsclass;
EditText newsdescription;
Toolbar toolbar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_lecturer_class_list);
//Firebase
database = FirebaseDatabase.getInstance();
lecturerclass = database.getReference("Class");
news = database.getReference("News");
recyclerView = (RecyclerView)findViewById(R.id.recycler_lecturerclass);
recyclerView.setHasFixedSize(true);
layoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);
//Toolbar code
toolbar = findViewById(R.id.toolbar);
toolbar.setTitle("Class List");
toolbar.setNavigationIcon(R.drawable.ic_arrow_back_black_24dp);
loadLecturerClass(Common.currentLecturer.getName());
}
private void loadLecturerClass(String Lecturer) {
adapter = new FirebaseRecyclerAdapter<LecturerClass, LecturerClassViewHolder>(LecturerClass.class, R.layout.lecturerclass_item, LecturerClassViewHolder.class, lecturerclass.orderByChild("lecturer").equalTo(Lecturer)) {
#Override
protected void populateViewHolder(LecturerClassViewHolder lecturerClassViewHolder, LecturerClass lecturerClass, int i) {
lecturerClassViewHolder.lclasstitle.setText("Class :" + adapter.getRef(i).getKey());
lecturerClassViewHolder.ldate.setText("Day :" + lecturerClass.getDay());
lecturerClassViewHolder.ltime.setText("Time :" + lecturerClass.getTime());
lecturerClassViewHolder.lclassroom.setText("Classroom :" + lecturerClass.getClassroom());
lecturerClassViewHolder.lcourse.setText(lecturerClass.getCourse());
lecturerClassViewHolder.setItemClickListener(new itemClickListener() {
#Override
public void onClick(View view, int position, boolean isLongClick) {
//code later
}
});
}
};
recyclerView.setAdapter(adapter);
}
#Override
public boolean onContextItemSelected(MenuItem item) {
if(item.getTitle().equals(Common.News))
{
showNewsDialog(adapter.getRef(item.getOrder()).getKey(),adapter.getItem(item.getOrder()));
}
return super.onContextItemSelected(item);
}
private void showNewsDialog(final String course, final LecturerClass item) {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(LecturerClassList.this);
alertDialog.setTitle("Make Announcement");
alertDialog.setMessage("Make announcement about this class.");
LayoutInflater inflater = this.getLayoutInflater();
View lecturer_make_news = inflater.inflate(R.layout.activity_lecturer_make_news, null);
newscourse = lecturer_make_news.findViewById(R.id.NewsCourse);
newsclass = lecturer_make_news.findViewById(R.id.NewsClass);
newsdescription = lecturer_make_news.findViewById(R.id.NewsDescription);
newscourse.setText("Course: "+item.getCourse());
newsclass.setText("Subject: " + course);
alertDialog.setView(lecturer_make_news);
alertDialog.setPositiveButton("Post", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int i) {
if(newsdescription.getText().toString().isEmpty()){
Toast.makeText(LecturerClassList.this, "Post cancel, description cannot be empty.", Toast.LENGTH_SHORT).show();
}
else {
News lnews = new News(
item.getCourse(),
course,
newsdescription.getText().toString()
);
news.child(String.valueOf(System.currentTimeMillis())).setValue(lnews);
Toast.makeText(LecturerClassList.this, "Announcement post successfully.", Toast.LENGTH_SHORT).show();
finish();
}
}
});
alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();;
}
});
alertDialog.show();
}
}
Activity file for viewholder
package com.example.attendanceappvqyfyp;
import android.view.ContextMenu;
import android.view.View;
import android.widget.TextView;
import com.example.attendanceappvqyfyp.Common.Common;
import androidx.recyclerview.widget.RecyclerView;
import com.example.attendanceappvqyfyp.Interface.itemClickListener;
public class LecturerClassViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener,View.OnCreateContextMenuListener {
public TextView lclasstitle, ldate, ltime, lclassroom, lcourse;
private itemClickListener itemClickListener;
public LecturerClassViewHolder(View itemView) {
super(itemView);
lclasstitle = (TextView)itemView.findViewById(R.id.lclasstitle);
ldate = (TextView)itemView.findViewById(R.id.ldate);
ltime = (TextView)itemView.findViewById(R.id.ltime);
lclassroom = (TextView)itemView.findViewById(R.id.lclassroom);
lcourse = (TextView)itemView.findViewById(R.id.lcourse);
itemView.setOnCreateContextMenuListener(this);
itemView.setOnClickListener(this);
}
public void setItemClickListener(itemClickListener itemClickListener) {
this.itemClickListener = itemClickListener;
}
#Override
public void onClick(View view) {
itemClickListener.onClick(view, getAdapterPosition(), false);
}
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
menu.setHeaderTitle("Select");
menu.add(0,0,getAdapterPosition(), Common.News);
}
}
Layout file for recyclerview
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".LecturerClassList">
<android.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
android:minHeight="?attr/actionBarSize"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:theme="#style/ThemeOverlay.AppCompat.Dark" />
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recycler_lecturerclass"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="vertical"
app:layout_constraintTop_toBottomOf="#+id/toolbar" />
</androidx.constraintlayout.widget.ConstraintLayout>
Layout file for itemview
<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="160dp"
app:cardElevation="4dp"
android:layout_marginBottom="8dp"
>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/lclasstitle"
android:layout_width="match_parent"
android:layout_height="40dp"
android:gravity="center"
android:text=""
android:textColor="#android:color/black"
android:textSize="20sp" />
<TextView
android:id="#+id/ldate"
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_alignBottom="#id/lclasstitle"
android:layout_marginBottom="-40dp"
android:gravity="center"
android:text=""
android:textColor="#android:color/black"
android:textSize="20sp" />
<TextView
android:id="#+id/ltime"
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_alignBottom="#id/ldate"
android:layout_marginBottom="-40dp"
android:gravity="center"
android:text=""
android:textColor="#android:color/black"
android:textSize="20sp" />
<TextView
android:id="#+id/lclassroom"
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_alignParentBottom="true"
android:gravity="center"
android:text=""
android:textColor="#android:color/black"
android:textSize="20sp" />
<TextView
android:id="#+id/lcourse"
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_alignParentBottom="true"
android:gravity="center"
android:text=""
android:visibility="invisible"
android:textColor="#android:color/black"
android:textSize="20sp" />
</RelativeLayout>
</androidx.cardview.widget.CardView>
Thanks to ZeePee for giving this link Display Back Arrow on Toolbar, although the toolbar didnt work for me, i change it back to actionbar and use the code from the link and it work.

Try adding horizontal constraints for Toolbar and Recycler View. After that you need to specify where do you want your single item widgets in Relative layout

Why item on menu drawer can't click ? Android Navigation

I have a really interesting problem with my Navigator menu. I have no idea why... But I can click on any item from my menu, I don't want to say I click and nothing happened. I really want to say I can't click on any item, all my menu it's like a big image. I've try to make a new project witch already have Navigation Drawer Activity, of course it works.. but when I've try to copy that code and put on mine.. I have the same problem and vice versa, I've try to put my code into a new project with Navigation Drawer Activity, but again... I can't click on any item.
image - this trouble
image - can't click
this my code :
menu_bar.java
package com.database.m.lyburan;
import android.app.Fragment;
import android.app.FragmentManager;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Handler;
import android.support.annotation.NonNull;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.CardView;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.AbsListView;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.VolleyLog;
import com.android.volley.toolbox.JsonArrayRequest;
import com.database.m.lyburan.adapter.EventAdapter;
import com.database.m.lyburan.app.AppController;
import com.database.m.lyburan.data.EventData;
import com.database.m.lyburan.util.Server;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
import static com.database.m.lyburan.Buddies.TAG_MESSAGE;
import static com.database.m.lyburan.Login.TAG_USERNAME;
import static com.database.m.lyburan.R.id.parent;
public class menu_bar extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener, SwipeRefreshLayout.OnRefreshListener {
Toolbar toolbar;
DrawerLayout drawer;
NavigationView navigationView;
FragmentManager fragmentManager;
Fragment fragment = null;
ListView list;
SharedPreferences sharedpreferences;
SwipeRefreshLayout swipe;
List<EventData> eventList = new ArrayList<EventData>();
private static final String TAG = menu_bar.class.getSimpleName();
private static String url_list = Server.URL + "event.php?offset=";
private int offSet = 0;
int no;
EventAdapter adapter;
public static final String TAG_NO = "no";
public static final String TAG_ID = "id";
public static final String TAG_JUDUL = "judul";
public static final String TAG_TGL = "tgl";
public static final String TAG_ISI = "isi";
public static final String TAG_GAMBAR = "gambar";
Handler handler;
Runnable runnable;
private Boolean isFabOpen = false;
private FloatingActionButton fab, fab1, fab2;
private CardView card1, card2;
private Animation fab_open, fab_close, rotate_forward, rotate_backward, card_open, card_close;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_menu_bar);
sharedpreferences = getSharedPreferences(Login.my_shared_preferences, Context.MODE_PRIVATE);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
drawer = (DrawerLayout) findViewById(R.id.drawer_layouts);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
if (savedInstanceState == null) {
fragment = new Root();
callFragment(fragment);
}
swipe = (SwipeRefreshLayout) findViewById(R.id.swipe_refresh_layout);
list = (ListView) findViewById(R.id.list_event);
eventList.clear();
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Intent intent = new Intent(menu_bar.this, Buddies.class);
intent.putExtra(TAG_ID, eventList.get(position).getId());
startActivity(intent);
}
});
adapter = new EventAdapter(menu_bar.this, eventList);
list.setAdapter(adapter);
swipe.setOnRefreshListener(this);
swipe.post(new Runnable() {
#Override
public void run() {
swipe.setRefreshing(true);
eventList.clear();
adapter.notifyDataSetChanged();
callEvent(0);
}
});
list.setOnScrollListener(new AbsListView.OnScrollListener() {
private int currentVisibleItemCount;
private int currentScrollState;
private int currentFirstVisibleItem;
private int totalItem;
#Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
this.currentScrollState = scrollState;
this.isScrollCompleted();
}
#Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
this.currentFirstVisibleItem = firstVisibleItem;
this.currentVisibleItemCount = visibleItemCount;
this.totalItem = totalItemCount;
}
private void isScrollCompleted() {
if (totalItem - currentFirstVisibleItem == currentVisibleItemCount
&& this.currentScrollState == SCROLL_STATE_IDLE) {
swipe.setRefreshing(true);
handler = new Handler();
runnable = new Runnable() {
public void run() {
callEvent(offSet);
}
};
handler.postDelayed(runnable, 3000);
}
}
});
Button meet_buddies = (Button) findViewById(R.id.meet_buddies);
meet_buddies.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(menu_bar.this,Buddies.class);
startActivity(intent);
}
});
Button upcoming = (Button) findViewById(R.id.upcoming);
upcoming.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(menu_bar.this,asd.class);
startActivity(intent);
}
});
fab = (FloatingActionButton) findViewById(R.id.fab);
fab1 = (FloatingActionButton) findViewById(R.id.fab1);
fab2 = (FloatingActionButton) findViewById(R.id.fab2);
card1 = (CardView) findViewById(R.id.card1);
card2 = (CardView) findViewById(R.id.card2);
/*kenalkan animasi*/
fab_open = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.fab_open);
fab_close = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.fab_close);
rotate_forward = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.rotate_forward);
rotate_backward = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.rotate_backward);
card_open=AnimationUtils.loadAnimation(getApplicationContext(), R.anim.card_open);
card_close=AnimationUtils.loadAnimation(getApplicationContext(), R.anim.card_close);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
animateFAB();
}
});
fab1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(menu_bar.this,Addhome.class);
startActivity(intent);
}
});
fab2.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(menu_bar.this, "New Call", Toast.LENGTH_SHORT).show();
}
});
}
#Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_bar, menu);
return true;
}
#Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_profile) {
fragment = new Import();
callFragment(fragment);
} else if (id == R.id.nav_payment) {
fragment = new Import();
callFragment(fragment);
} else if (id == R.id.nav_help) {
fragment = new Import();
callFragment(fragment);
} else if (id == R.id.btn_logout) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layouts);
drawer.closeDrawer(GravityCompat.START);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
Toast.makeText(getApplicationContext(), "Action Settings", Toast.LENGTH_SHORT).show();
return true;
}
return super.onOptionsItemSelected(item);
}
private void callFragment(Fragment fragment) {
fragmentManager = getFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.frame_containers, fragment)
.commit();
}
public void animateFAB() {
/*jika fab dalam keadaan false*/
if (isFabOpen) {
fab.startAnimation(rotate_backward);
fab1.startAnimation(fab_close);
fab2.startAnimation(fab_close);
card1.startAnimation(card_close);
card2.startAnimation(card_close);
fab1.setClickable(false);
fab2.setClickable(false);
isFabOpen = false;
} else {
/*jika dalam keadaan true*/
fab.startAnimation(rotate_forward);
fab1.startAnimation(fab_open);
fab2.startAnimation(fab_open);
card1.startAnimation(card_open);
card2.startAnimation(card_open);
fab1.setClickable(true);
fab2.setClickable(true);
isFabOpen = true;
}
}
#Override
public void onRefresh() {
eventList.clear();
adapter.notifyDataSetChanged();
callEvent(0);
}
private void callEvent(int page){
swipe.setRefreshing(true);
JsonArrayRequest arrReq = new JsonArrayRequest(url_list + page,
new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
Log.d(TAG, response.toString());
if (response.length() > 0) {
// Parsing json
for (int i = 0; i < response.length(); i++) {
try {
JSONObject obj = response.getJSONObject(i);
EventData news = new EventData();
no = obj.getInt(TAG_NO);
news.setId(obj.getString(TAG_ID));
news.setJudul(obj.getString(TAG_JUDUL));
if (!Objects.equals(obj.getString(TAG_GAMBAR), "")) {
news.setGambar(obj.getString(TAG_GAMBAR));
}
news.setDatetime(obj.getString(TAG_TGL));
news.setIsi(obj.getString(TAG_ISI));
// adding news to news array
eventList.add(news);
if (no > offSet)
offSet = no;
Log.d(TAG, "offSet " + offSet);
} catch (JSONException e) {
Log.e(TAG, "JSON Parsing error: " + e.getMessage());
}
adapter.notifyDataSetChanged();
}
}
swipe.setRefreshing(false);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
swipe.setRefreshing(false);
}
});
// Adding request to request queue
AppController.getInstance().addToRequestQueue(arrReq);
}
}
activity_menu_bar.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/drawer_layouts"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<include
layout="#layout/app_bar_menu_bar"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.design.widget.NavigationView
android:id="#+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="#layout/nav_header_menu_bar"
app:menu="#menu/activity_menu_bar_drawer" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="16dp"
android:paddingRight="16dp">
<Button
android:id="#+id/meet_buddies"
android:layout_width="fill_parent"
android:drawableLeft="#drawable/ic_profil_w"
android:background="#color/ijo"
android:textColor="#android:color/background_light"
android:layout_height="wrap_content"
android:padding="15dp"
android:onClick="meet"
android:layout_marginTop="70dp"
android:text="Meet Buddies"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<Button
android:id="#+id/upcoming"
android:layout_width="170dp"
android:background="#color/white"
android:textColor="#color/ijo"
android:layout_height="wrap_content"
android:padding="15dp"
android:text="Notification"
android:layout_marginTop="135dp" />
<Button
android:id="#+id/myshared"
android:layout_width="190dp"
android:background="#color/white"
android:textColor="#color/ijo"
android:layout_height="wrap_content"
android:padding="15dp"
android:layout_marginLeft="190dp"
android:layout_marginTop="135dp"
android:text="My Shared"
/>
</RelativeLayout>
<android.support.design.widget.CoordinatorLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:paddingRight="10dp">
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin"
android:stateListAnimator="#null"
android:src="#drawable/ic_plus_w"
app:backgroundTint="#color/colorAccent"
app:elevation="6dp"
app:pressedTranslationZ="12dp" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_marginBottom="130dp"
android:stateListAnimator="#null"
android:layout_marginRight="#dimen/fab_margin"
android:visibility="invisible"
android:src="#drawable/ic_menu_camera"
app:backgroundTint="#ffffff"
app:elevation="6dp"
app:pressedTranslationZ="12dp" />
<android.support.v7.widget.CardView
android:id="#+id/card2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_marginBottom="140dp"
android:layout_marginRight="75dp"
android:visibility="invisible">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="2dp"
android:text="Add Event" />
</android.support.v7.widget.CardView>
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_marginBottom="80dp"
android:layout_marginRight="#dimen/fab_margin"
android:src="#drawable/ic_beranda"
android:visibility="invisible"
app:backgroundTint="#ffffff"
app:elevation="6dp"
app:pressedTranslationZ="12dp" />
<android.support.v7.widget.CardView
android:id="#+id/card1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_marginBottom="90dp"
android:layout_marginRight="70dp"
android:visibility="invisible">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="2dp"
android:text="Add Homestay" />
</android.support.v7.widget.CardView>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:paddingRight="10dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Event"
android:textStyle="bold"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="198dp" />
<android.support.v4.widget.SwipeRefreshLayout
android:id="#+id/swipe_refresh_layout"
android:layout_width="match_parent"
android:layout_marginTop="222dp"
android:layout_height="wrap_content">
<ListView
android:id="#+id/list_event"
android:layout_width="wrap_content"
android:layout_height="330dp"
android:divider="#null"
android:dividerHeight="2dp"
android:layout_marginTop="222dp"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
</android.support.v4.widget.SwipeRefreshLayout>
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>
</android.support.v4.widget.DrawerLayout>
i've tried, how can i fix it ? anyone please help me. thanks.

Anyone else having similar problem. It appears the order in the XML matters too.
I had my NavigationView and after it I had a layout included and I couldn't click an item on the NavigationView.
After I switched them, so that my layout was being included AND THEN AFTER IT I had my NavigationView, it worked ...

this adapter.java
public class Adapter extends BaseAdapter {
private Activity activity;
private LayoutInflater inflater;
private List<DataModel> item;
public Adapter(Activity activity, List<DataModel> item) {
this.activity = activity;
this.item = item;
}
#Override
public int getCount() {
return item.size();
}
#Override
public Object getItem(int location) {
return item.get(location);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if (inflater == null)
inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null)
convertView = inflater.inflate(R.layout.list_buddies, null);
TextView txt_nama = (TextView) convertView.findViewById(R.id.custom_list_item_text1);
txt_nama.setText(item.get(position).getNama());
return convertView;
}
}

You need to create this type of your layout xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools" android:id="#+id/drawer_layout"
android:layout_width="match_parent" android:layout_height="match_parent"
android:fitsSystemWindows="true" tools:openDrawer="start">
<FrameLayout
android:id="#+id/container"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
</FrameLayout>
<android.support.design.widget.NavigationView
android:id="#+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="#layout/nav_header_menu_bar"
app:menu="#menu/activity_menu_bar_drawer" />
</android.support.v4.widget.DrawerLayout>
In FrameLayout you need to replace all fragment one by one like
private void callFragment(Fragment fragment) {
fragmentManager = getFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.container, fragment)
.commit();
}
Note: You can write your Coordinator layout and other in fragment itself, may be helpful for you.

Android: Display images in full screen with caption on `onClick` event

I'm a beginner to the android development. I have an android image view that import web image by using Picasso 2.5.2 library. It's working. After click on that imageview, I want to create a full screen Android dialog with that image. I' used following code for it. But after click on the image view, a dialog is displayed without full screen. Finally, I want to zoom in and zoom out that full screen dialog. I want this kind of full screen on imageview onClickListener. Also see how the below image has a title and I also need the image caption (like in Facebook)
Here is my code
Mainactivity.java
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.graphics.Bitmap;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import com.squareup.picasso.Picasso;
public class MainActivity extends AppCompatActivity {
ImageView imageView1;
Context context;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initUi();
}
public void initUi(){
imageView1 = (ImageView)findViewById(R.id.image);
Picasso.with(this)
.load(Uri.parse("http://p.qpic.cn/videoyun/0/2449_43b6f696980311e59ed467f22794e792_1/640"))
.into(imageView1);
imageView1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
showImage();
}
});
}
public void showImage() {
Dialog builder = new Dialog(this, android.R.style.Theme_Light);
builder.requestWindowFeature(Window.FEATURE_NO_TITLE);
builder.getWindow().setBackgroundDrawable(
new ColorDrawable(android.graphics.Color.TRANSPARENT));
builder.setOnDismissListener(new DialogInterface.OnDismissListener() {
#Override
public void onDismiss(DialogInterface dialogInterface) {
//nothing;
}
});
ImageView imageView = new ImageView(this);
Picasso.with(this)
.load(Uri.parse("http://p.qpic.cn/videoyun/0/2449_43b6f696980311e59ed467f22794e792_1/640"))
.into(imageView);
builder.addContentView(imageView, new RelativeLayout.LayoutParams(
ViewGroup.LayoutParams.WRAP_CONTENT,
ViewGroup.LayoutParams.WRAP_CONTENT));
builder.show();
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_add_info_other"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:orientation="vertical">
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:text="Image buttons"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:textColor="#android:color/black"
android:textSize="16sp"/>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/image"/>
</LinearLayout>
</ScrollView>
</LinearLayout>

You can use Chrisbane's PhotoView lib for zooming the image.
Open the detail page by sending the path,
public void showImage() {
Intent intent = new Intent(this, ImageDeatilActvity.class);
intent.putExtra("path", "http://p.qpic.cn/videoyun/0/2449_43b6f696980311e59ed467f22794e792_1/640");
startActivity(intent);
}
Complete ImageDeatilActvity.java
public class ImageDeatilActvity extends AppCompatActivity implements View.OnSystemUiVisibilityChangeListener {
private boolean mIsFullScreen;
private Toolbar mToolbar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_image_deatil_actvity);
mToolbar = (Toolbar) findViewById(R.id.toolbar);
if (mToolbar != null) {
setSupportActionBar(mToolbar);
}
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
final Drawable upArrow = ContextCompat.getDrawable(this, R.drawable.abc_ic_ab_back_material);
upArrow.setColorFilter(Color.WHITE, PorterDuff.Mode.SRC_ATOP);
getSupportActionBar().setHomeAsUpIndicator(upArrow);
mIsFullScreen = true;
String path = getIntent().getStringExtra("path");
PhotoView photoView = (PhotoView) findViewById(R.id.photo_view);
photoView.setOnPhotoTapListener(new PhotoViewAttacher.OnPhotoTapListener() {
#Override
public void onPhotoTap(View view, float x, float y) {
updateView();
}
#Override
public void onOutsidePhotoTap() {
updateView();
}
});
Glide.with(this).load(path).into(photoView);
}
#Override
public void onSystemUiVisibilityChange(int visibility) {
if ((visibility & View.SYSTEM_UI_FLAG_FULLSCREEN) == 0) {
mIsFullScreen = false;
}
updateView();
}
public void updateView() {
mIsFullScreen = !mIsFullScreen;
if (mIsFullScreen) {
hideSystemUI();
} else {
showSystemUI();
}
}
private void hideSystemUI() {
mToolbar.animate().translationY(-mToolbar.getHeight()).setInterpolator(new AccelerateInterpolator(2)).start();
}
private void showSystemUI() {
mToolbar.animate().translationY(0).setInterpolator(new DecelerateInterpolator(2)).start();
}
public int getStatusBarHeight() {
int result = 0;
int resourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
if (resourceId > 0) {
result = getResources().getDimensionPixelSize(resourceId);
}
return result;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
finish();
return true;
}
return super.onOptionsItemSelected(item);
}
}
Detail Activity Layout,
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="in.muthu.stackoverflow.ImageDeatilActvity">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_alignParentTop="true"
android:background="#33000000"
android:fitsSystemWindows="true"
app:contentScrim="#android:color/transparent"
app:popupTheme="#style/AppTheme.AppBarOverlay"/>
<uk.co.senab.photoview.PhotoView
android:id="#+id/photo_view"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</RelativeLayout>
In My example, I am using Glide not Picaso, because Android
official recommendation is Glide, If you want you can change that.

set image to centre crop and resize it with your screen size like
Picasso.with(MainActivity.this)
.load(Uri.parse("http://p.qpic.cn/videoyun/0/2449_43b6f696980311e59ed467f22794e792_1/640"))
.noFade()
.resize(800, 800)
.centerCrop()
.into(imageView);

Use below xml for layout, i added one more ImageView just use make the visibility visible on click of small image_view
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_add_info_other"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:orientation="vertical">
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:text="Image buttons"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:textColor="#android:color/black"
android:textSize="16sp"/>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/image"/>
</LinearLayout>
</ScrollView>
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</RelativeLayout>

Activity ActionBar is invisible in fragment

I have problem with ActionBar in my fragment. It's invisible in it, so I can't execute getActionBar().setDisplayHomeAsUpEnabled(true); in my SignUpActivity.java. In every other Activity (not Fragment) it's visible.
Could You tell me what I am doing wrong? Probably something is missing.
fragment_sign_up.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="fill_parent"
xmlns:tools="http://schemas.android.com/tools"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
tools:context="com.msh.organizer.SignUpActivity">
<EditText
android:layout_below="#id/toolbar"
android:id="#+id/nickname_et"
android:hint="#string/nickname"
android:layout_marginTop="40dp"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<EditText
android:id="#+id/email_et"
android:hint="#string/mail"
android:layout_marginTop="5dp"
android:layout_below="#id/nickname_et"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<EditText
android:id="#+id/password_et"
android:hint="#string/password"
android:inputType="textPassword"
android:layout_marginTop="5dp"
android:layout_below="#id/email_et"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<Button
android:id="#+id/sign_up_btn"
android:layout_marginTop="15dp"
android:layout_below="#id/password_et"
android:text="#string/sign_up"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
activity_sign_up.xml
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.msh.organizer.SignUpActivity"
tools:ignore="MergeRootFrame" />
SignUpActivity.java
package com.msh.organizer;
import android.app.Activity;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;
public class SignUpActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sign_up);
//getActionBar().setDisplayHomeAsUpEnabled(true);
if (savedInstanceState == null) {
getFragmentManager().beginTransaction()
.add(R.id.container, new SignUpFragment())
.commit();
}
//Toast.makeText(this,"Sign Up", Toast.LENGTH_LONG).show();
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
SignUpFragment.java
package com.msh.organizer;
import android.app.Activity;
import android.app.Fragment;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.TextUtils;
import android.util.Patterns;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import com.parse.ParseException;
import com.parse.ParseUser;
import com.parse.SignUpCallback;
public class SignUpFragment extends Fragment implements View.OnClickListener {
private Button mSignUpButton;
private EditText mNickNameEditText;
private EditText mEmailEditText;
private EditText mPasswordEditText;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_sign_up, container, false);
mSignUpButton = (Button) rootView.findViewById(R.id.sign_up_btn);
mNickNameEditText = (EditText) rootView.findViewById(R.id.nickname_et);
mEmailEditText = (EditText) rootView.findViewById(R.id.email_et);
mPasswordEditText = (EditText) rootView.findViewById(R.id.password_et);
return rootView;
}
#Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mSignUpButton.setOnClickListener(this);
}
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.sign_up_btn:
trySignUp();
break;
}
}
private void trySignUp() {
String nickname = mNickNameEditText.getText().toString();
String email = mEmailEditText.getText().toString();
String password = mPasswordEditText.getText().toString();
boolean failed = false;
if (TextUtils.isEmpty(nickname)){
mNickNameEditText.setError("Nickname cannnot be empty!");
failed = true;
}
if (TextUtils.isEmpty(password)){
mPasswordEditText.setError("Password cannnot be empty!");
failed = true;
}
if (TextUtils.isEmpty(email)){
mEmailEditText.setError("Email cannnot be empty!");
failed = true;
}
if (!Patterns.EMAIL_ADDRESS.matcher(email).matches()){
mEmailEditText.setError("Inwalid E-mail address!");
failed = true;
}
if (!failed){
signUp(nickname, email, password);
}
}
private void signUp(String nickname, String email, String password) {
ParseUser user = new ParseUser();
user.setUsername(email);
user.setPassword(password);
user.setEmail(email);
// other fields can be set just like with ParseObject
user.put("nickname", nickname);
user.signUpInBackground(new SignUpCallback() {
public void done(ParseException e) {
if (e == null) {
if (getActivity() != null){
getActivity().setResult(Activity.RESULT_OK);
getActivity().finish();
}
} else {
if (getActivity() != null) {
Toast.makeText(getActivity(), e.getLocalizedMessage(), Toast.LENGTH_LONG).show();
}
}
}
});
}
}

You can use Toolbar inside an AppBarLayout in your activity:
SignUpActivity.java
...
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
final ActionBar ab = getSupportActionBar();
ab.setHomeAsUpIndicator(R.drawable.ic_menu);
ab.setDisplayHomeAsUpEnabled(true);
...
activity_sign_up.xml
<android.support.design.widget.AppBarLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:layout_scrollFlags="scroll|enterAlways|snap" />
</android.support.design.widget.AppBarLayout>
<FrameLayout
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.msh.organizer.SignUpActivity"
tools:ignore="MergeRootFrame" />

Getting error in Counter in Android

Following is my code. I need to get the increment value in FloatingActionButton. I've written the code.
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="database.fab.MainActivity">
<ListView
android:id="#+id/lvListView"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/rel1" >
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/rlRelativeLayout"
android:layout_margin="16dp"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" >
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="65dp"
android:layout_height="65dp"
android:layout_gravity="bottom|end"
android:src="#mipmap/cart_main"
android:clickable="true"
android:scaleType="fitXY"
android:onClick="fab" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/null_value_zero"
android:id="#+id/fab_text"
android:textColor="#42b138"
android:layout_marginTop="23dp"
android:layout_centerHorizontal="true"
android:textStyle="bold"
android:textSize="17sp"
android:elevation="7dp" />
</RelativeLayout>
</RelativeLayout>
</RelativeLayout>
custom_listview.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_margin="16dp"
android:background="#FFFFFF"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="140dp">
<ImageView
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_marginStart="20dp"
android:layout_marginLeft="20dp"
android:layout_centerVertical="true"
android:id="#+id/ivImageViewMain"/>
<ImageView
android:layout_width="120dp"
android:layout_height="80dp"
android:id="#+id/CounterImage"
android:src="#mipmap/main_add"
android:layout_marginRight="20dp"
android:layout_marginEnd="20dp"
android:layout_centerVertical="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"/>
</RelativeLayout>
</RelativeLayout>
MainActivity.java
package database.fab;
import android.support.design.widget.FloatingActionButton;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
ListView lvListView;
ImageView CounterImage;
TextView fab_text;
Adapter adapter;
int counter = 0;
int[] images_item = {
R.mipmap.apple,
R.mipmap.blackberry,
R.mipmap.cherry,
R.mipmap.coconut,
R.mipmap.grapes,
R.mipmap.orange,
R.mipmap.peach,
R.mipmap.pineapple,
R.mipmap.pomegranate,
R.mipmap.banana
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
lvListView = (ListView) findViewById(R.id.lvListView);
fab_text = (TextView) findViewById(R.id.fab_text);
ImageView imageView= (ImageView) findViewById(R.id.CounterImage);
imageView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
counter++;
fab_text.setText(String.valueOf(counter));
}
});
adapter = new Adapter(getApplicationContext(), R.layout.custom_listview);
lvListView.setAdapter(adapter);
int i = 0;
for (int Image : images_item){
Helper helper = new Helper(images_item[i]);
adapter.add(helper);
i++;
}
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
}
}
Adapter.java
package database.fab;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import java.util.ArrayList;
import java.util.List;
public class Adapter extends ArrayAdapter {
List arrayList = new ArrayList();
public Adapter(Context context, int resource) {
super(context, resource);
}
int counter;
public void add(Helper object) {
super.add(object);
arrayList.add(object);
}
static class ImageHolder{
ImageView img_item;
}
#Override
public int getCount() {
return this.arrayList.size();
}
#Override
public Object getItem(int position) {
return this.arrayList.get(position);
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View view;
view = convertView;
ImageHolder imageHolder;
if (convertView == null) {
LayoutInflater layoutInflater = (LayoutInflater) this.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = layoutInflater.inflate(R.layout.custom_listview, parent, false);
imageHolder = new ImageHolder();
imageHolder.img_item = (ImageView) view.findViewById(R.id.ivImageViewMain);
view.setTag(imageHolder);
}
else {
imageHolder = (ImageHolder) view.getTag();
}
Helper h;
h = (Helper) this.getItem(position);
imageHolder.img_item.setImageResource(h.getImage_item());
return (view);
}
}
Helper.java
package database.fab;
public class Helper {
private int image_item;
public Helper(int image_item) {
this.image_item = image_item;
}
public int getImage_item() {
return image_item;
}
public void setImage_item(int image_item) {
this.image_item = image_item;
}
}
Error
12-21 13:01:00.535 13336-13336/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: database.fab, PID: 13336
java.lang.RuntimeException: Unable to start activity ComponentInfo{database.fab/database.fab.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageView.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2308)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2368)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1285)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5233)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:898)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:693)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageView.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
at database.fab.MainActivity.onCreate(MainActivity.java:42)
at android.app.Activity.performCreate(Activity.java:6001)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2261)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2368) 
at android.app.ActivityThread.access$800(ActivityThread.java:144) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1285) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:135) 
at android.app.ActivityThread.main(ActivityThread.java:5233) 
at java.lang.reflect.Method.invoke(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:372) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:898) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:693) 
I need to get the increment value in FloatingActionButton after I press the add image. Don't know where I went wrong. Please help me with this. Thanks in advance.

Update: revert this, I missed the second ImageView - sry
change this:
ImageView imageView= (ImageView) findViewById(R.id.CounterImage);
to:
ImageView imageView= (ImageView) findViewById(R.id.ivImageViewMain);
Update:
In your main activity you are setting the view to activity_main.xml:
setContentView(R.layout.activity_main);
Then you are trying to get the view with the ID CounterImage:
ImageView imageView = (ImageView) findViewById(R.id.CounterImage)
which does not exist in activity_main.xml
Update 2:
You should look at a few Java and Android basics.
int i = 0;
for (int Image : images_item){
Helper helper = new Helper(images_item[i]);
adapter.add(helper);
i++;
}
You are mixing two for-loops here.
This:
for(int image : images_item) {
adapter.add(new Helper(image));
}
would be a nicer way to do the same thing.
Update 3:
You are inflating the correct layout in Adapter.java:
view = layoutInflater.inflate(R.layout.custom_listview, parent, false);
Right there you can add a OnClickListener:
ImageView imageView= (ImageView) view.findViewById(R.id.CounterImage);
imageView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
counter++;
fab_text.setText(String.valueOf(counter));
}
});
Don't forget to remove the false code from the Activity.