@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_dashboard);

    btn=(Button)findViewById(R.id.btn1);
    btn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            Toast.makeText(Dashboard.this, "Prevention Techniques", Toast.LENGTH_SHORT).show();
            Intent intent= new Intent(Dashboard.this,PostsListActivity.class);
            startActivity(intent);
        }
    });

    btn1=(Button)findViewById(R.id.btn2) ;
    btn1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            Toast.makeText(Dashboard.this, "Pest control", Toast.LENGTH_SHORT).show();

        }
    });


    btn2=(Button)findViewById(R.id.btn) ;
    btn2.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {


            Toast.makeText(Dashboard.this, "Pest Detected", Toast.LENGTH_SHORT).show();

        }
    });

    btn3=(Button)findViewById(R.id.btn4) ;
    btn3.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {


            Toast.makeText(Dashboard.this, "Pest Identication", Toast.LENGTH_SHORT).show();

        }
    });
    Toolbar toolbar = findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    FloatingActionButton fab = findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG).setAction("Action", null).show();
        }
    });
    DrawerLayout drawer = findViewById(R.id.drawer_layout);
    NavigationView navigationView = findViewById(R.id.nav_view);
    navigationView.setItemIconTintList(null);


    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);

    drawer.addDrawerListener(toggle);
    toggle.syncState();
    navigationView.setNavigationItemSelectedListener(this);
}

@Override
public void onBackPressed() {
    DrawerLayout drawer = 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.dashboard, menu);
    return true;
}

@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();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}

@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
    // Handle navigation view item clicks here.
    int id = item.getItemId();

    if (id == R.id.profile) {
        // Handle the camera action
    } else if (id == R.id.dashboard) {

    } else if (id == R.id.nav_slideshow) {

    } else if (id == R.id.nav_tools) {



    }

    DrawerLayout drawer = findViewById(R.id.drawer_layout);
    drawer.closeDrawer(GravityCompat.START);
    return true;




}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_posts_list);

    ActionBar actionBar = getSupportActionBar();
    actionBar.setTitle("Prevention Techniques");

    mRecyclerView = findViewById(R.id.recyclerView);
    mRecyclerView.setHasFixedSize(true);

    mRecyclerView.setLayoutManager(new LinearLayoutManager( this));

    mFirebaseDatabase = FirebaseDatabase.getInstance();
    mRef = mFirebaseDatabase.getReference("Prevention Techniques");
}
//search data
private void firebaseSearch(String searchText){
    String query = searchText.toLowerCase();
    Query firebaseSearchQuery = mRef.orderByChild("search").startAt(searchText).endAt(searchText + "uf0ff");

    FirebaseRecyclerAdapter<Model, ViewHolder> firebaseRecyclerAdapter =
            new FirebaseRecyclerAdapter<Model, ViewHolder>(
                    Model.class,
                    R.layout.row,
                    ViewHolder.class,
                    firebaseSearchQuery
            ) {
                @Override
                protected void populateViewHolder(ViewHolder viewHolder, Model model, int position) {
                    viewHolder.setDetails(getApplicationContext(), model.getTitle(), model.getDescription(),model.getImage());


                }
                @Override
                public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

                    ViewHolder viewHolder = super.onCreateViewHolder(parent, viewType);
                    viewHolder.setOnClickListener(new ViewHolder.ClickListener() {
                        @Override
                        public void onItemClick(View view, int position) {

                            String mTitle = getItem(position).getTitle();
                            String mDesc = getItem(position).getDescription();
                            String mImage = getItem(position).getImage();


                            Intent intent = new Intent(view.getContext(), PostDetailActivity.class);
                            intent.putExtra("title", mTitle);
                            intent.putExtra("description", mDesc);
                            intent.putExtra("image", mImage);
                            startActivity(intent);







                        }

                        @Override
                        public void onItemLongClick(View view, int position) {



                        }
                    });
                    return viewHolder;
                }
            };
    mRecyclerView.setAdapter(firebaseRecyclerAdapter);
}

@Override
protected void onStart() {
    super.onStart();
    FirebaseRecyclerAdapter<Model, ViewHolder> firebaseRecyclerAdapter =
            new FirebaseRecyclerAdapter<Model, ViewHolder>(
                    Model.class,
                    R.layout.row,
                    ViewHolder.class,
                    mRef
            ) {
                @Override
                protected void populateViewHolder(ViewHolder viewHolder, Model model, int position) {
                    viewHolder.setDetails(getApplicationContext(), model.getTitle(), model.getDescription(),model.getImage());

                }

                @Override
                public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

                    ViewHolder viewHolder = super.onCreateViewHolder(parent, viewType);
                    viewHolder.setOnClickListener(new ViewHolder.ClickListener() {
                        @Override
                        public void onItemClick(View view, int position) {



                            String mTitle = getItem(position).getTitle();
                            String mDet = getItem(position).getDetail();
                            String mImage = getItem(position).getImage();


                            Intent intent = new Intent(view.getContext(), PostDetailActivity.class);
                            intent.putExtra("title", mTitle);
                            intent.putExtra("description", mDet);
                            intent.putExtra("image", mImage);
                            startActivity(intent);
                        }

                        @Override
                        public void onItemLongClick(View view, int position) {



                        }
                    });
                    return viewHolder;
                }

            };
    mRecyclerView.setAdapter(firebaseRecyclerAdapter);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {

    getMenuInflater().inflate(R.menu.menu,menu);
    MenuItem item  = menu.findItem(R.id.action_search);
    SearchView searchView = (SearchView) MenuItemCompat.getActionView(item);
    searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
        @Override
        public boolean onQueryTextSubmit(String query) {
            firebaseSearch(query);

            return false;
        }

        @Override
        public boolean onQueryTextChange(String newText) {
            firebaseSearch(newText);
            return false;
        }
    });
    return super.onCreateOptionsMenu(menu);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();

    if(id == R.id.action_settings) {
        //TODO
        return true;
    }

    return super.onOptionsItemSelected(item);
}

public class ViewHolder extends RecyclerView.ViewHolder {
View mView;
public ViewHolder(@NonNull View itemView) {
    super(itemView);
    mView = itemView;
    itemView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            mClickListener.onItemClick(view, getAdapterPosition());

        }
    });
    itemView.setOnLongClickListener(new View.OnLongClickListener() {
        @Override
        public boolean onLongClick(View view) {
            mClickListener.onItemLongClick(view,getAdapterPosition());
            return true;
        }
    });

}
public  void  setDetails(Context ctx, String title, String description, String image) {
    TextView mTitleTv = mView.findViewById(R.id.rTitleTv);
    TextView mDtealiTv  = mView.findViewById(R.id.rDescriptionTv);
    ImageView mImageTv  = mView.findViewById(R.id.rImageView);

    mTitleTv.setText(title);
    mDtealiTv.setText(description);
    Picasso.get().load(image).into(mImageTv);

}

private  ViewHolder.ClickListener mClickListener;

public interface  ClickListener{
    void onItemClick(View view, int position);
    void onItemLongClick(View view, int position);

}

public void setOnClickListener(ViewHolder.ClickListener clickListener ){

    mClickListener = clickListener;

}

public class Model {

String title , image , description, detail;

public Model(){}

public String getTitle() {
    return title;
}

public void setTitle(String title) {
    this.title = title;
}

public String getImage() {
    return image;
}

public void setImage(String image) {
    this.image = image;
}

public String getDescription() {
    return description;
}

public void setDescription(String description) {
    this.description = description;
}

public String getDetail() {
    return detail;
}

public void setDetail(String detail) {
    this.detail = detail;
}