delete item code added

app/src/main/java/com/example/instilostandfound/CreateFoundObject.java

@@ -3,10 +3,11 @@ package com.example.instilostandfound;
 import com.google.firebase.auth.FirebaseAuth;
 import com.google.firebase.database.Exclude;
 
+import java.io.Serializable;
 import java.text.SimpleDateFormat;
 import java.util.Date;
 
-public class CreateFoundObject {
+public class CreateFoundObject implements Serializable {
 
     //private String mLDAPID;
     private String mImageUrl;

app/src/main/java/com/example/instilostandfound/MyPostsAdaptor.java

 package com.example.instilostandfound;
 
 import android.content.Context;
+import android.view.ContextMenu;
 import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ImageView;
@@ -17,6 +20,7 @@ import java.util.List;
 public class MyPostsAdaptor extends RecyclerView.Adapter<MyPostsAdaptor.myViewHolder> {
     private Context mcontext;
     private List<CreateFoundObject> mUploads;
+    private OnItemClickListener mListener;
 
     public MyPostsAdaptor(Context context, List<CreateFoundObject> uploads){
         mcontext = context;
@@ -45,16 +49,72 @@ public class MyPostsAdaptor extends RecyclerView.Adapter<MyPostsAdaptor.myViewHo
         return mUploads.size();
     }
 
-    public class myViewHolder extends RecyclerView.ViewHolder{
+    public class myViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener,
+            View.OnCreateContextMenuListener, MenuItem.OnMenuItemClickListener{
 
         public TextView textViewname;
         public ImageView imageView;
+
         public myViewHolder(@NonNull View itemView) {
             super(itemView);
 
             textViewname = itemView.findViewById(R.id.list_item_textview);
             imageView = itemView.findViewById(R.id.list_item_imageview);
+            itemView.setOnClickListener(this);
+            itemView.setOnCreateContextMenuListener(this);
+        }
+
+        @Override
+        public void onClick(View v) {
+            if (mListener != null) {
+                int position = getAdapterPosition();
+                if (position != RecyclerView.NO_POSITION) {
+                    mListener.onItemClick(position);
+                }
+            }
+
         }
 
+
+            @Override
+            public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
+                menu.setHeaderTitle("Select Action");
+                MenuItem doedit = menu.add(Menu.NONE, 1, 1, "Edit post");
+                MenuItem delete = menu.add(Menu.NONE, 2, 2, "Delete post");
+
+                doedit.setOnMenuItemClickListener(this);
+                delete.setOnMenuItemClickListener(this);
+            }
+
+            @Override
+            public boolean onMenuItemClick(MenuItem item) {
+                if (mListener != null) {
+                    int position = getAdapterPosition();
+                    if (position != RecyclerView.NO_POSITION) {
+
+                        switch (item.getItemId()) {
+                            case 1:
+                                mListener.oneditClick(position);
+                                return true;
+                            case 2:
+                                mListener.onDeleteClick(position);
+                                return true;
+                        }
+                    }
+                }
+                return false;
+            }
+        }
+
+        public interface OnItemClickListener {
+            void onItemClick(int position);
+
+            void oneditClick(int position);
+
+            void onDeleteClick(int position);
+        }
+
+        public void setOnItemClickListener(OnItemClickListener listener) {
+            mListener = listener;
+        }
     }
-}

app/src/main/java/com/example/instilostandfound/MyPostsFoundRV.java

@@ -5,10 +5,14 @@ import androidx.appcompat.app.AppCompatActivity;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
+import android.content.Intent;
 import android.os.Bundle;
 import android.util.Log;
+import android.view.View;
+import android.widget.AdapterView;
 import android.widget.Toast;
 
+import com.google.android.gms.tasks.OnSuccessListener;
 import com.google.firebase.database.ChildEventListener;
 import com.google.firebase.database.DataSnapshot;
 import com.google.firebase.database.DatabaseError;
@@ -16,18 +20,24 @@ import com.google.firebase.database.DatabaseReference;
 import com.google.firebase.database.FirebaseDatabase;
 import com.google.firebase.database.Query;
 import com.google.firebase.database.ValueEventListener;
+import com.google.firebase.storage.FirebaseStorage;
+import com.google.firebase.storage.StorageReference;
 
+import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.List;
 
-public class MyPostsFoundRV extends AppCompatActivity {
+public class MyPostsFoundRV extends AppCompatActivity implements MyPostsAdaptor.OnItemClickListener {
     private RecyclerView mrecyclerView;
     private MyPostsAdaptor mAdaptor;
 
     private DatabaseReference mDatabaseRef;
+    private FirebaseStorage mStorage;
     private List<CreateFoundObject> mPosts;
     private String username =null;
 
+
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -41,6 +51,7 @@ public class MyPostsFoundRV extends AppCompatActivity {
         mPosts = new ArrayList<>();
 
         mDatabaseRef = FirebaseDatabase.getInstance().getReference("FoundData");
+        mStorage = FirebaseStorage.getInstance();
         Query usernamequery = mDatabaseRef.orderByChild("ldap").equalTo((username+"@iitb.ac.in").toLowerCase());
         Log.v("query",usernamequery.toString());
 
@@ -48,15 +59,19 @@ public class MyPostsFoundRV extends AppCompatActivity {
             @Override
             public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
                 for(DataSnapshot postSnapShot : dataSnapshot.getChildren()){
+
                     CreateFoundObject post = postSnapShot.getValue(CreateFoundObject.class);
+                    post.setKey(postSnapShot.getKey());
                     mPosts.add(post);
                 }
 
                 mAdaptor = new MyPostsAdaptor(MyPostsFoundRV.this, mPosts);
                 mrecyclerView.setAdapter(mAdaptor);
+                mAdaptor.setOnItemClickListener(MyPostsFoundRV.this);
 
             }
 
+
             @Override
             public void onCancelled(@NonNull DatabaseError databaseError) {
 
@@ -64,4 +79,51 @@ public class MyPostsFoundRV extends AppCompatActivity {
             }
         });
     }
+    @Override
+    public void onItemClick(int position) {
+        Toast.makeText(this, "Normal click at position: " + position, Toast.LENGTH_SHORT).show();
+    }
+
+    @Override
+    public void oneditClick(int position) {
+        Log.v("position =",String.valueOf(position));
+        CreateFoundObject selectedItem = mPosts.get(position);
+        final String selectedKey = selectedItem.getKey();
+        Intent intent = new Intent(MyPostsFoundRV.this, FoundItem.class);
+        intent.putExtra("FoundObject", selectedItem);
+        startActivity(intent);
+        Toast.makeText(this, "Whatever click at position: " + position, Toast.LENGTH_SHORT).show();
+    }
+
+    @Override
+    public void onDeleteClick(int position) {
+        Log.v("position =",String.valueOf(position));
+        CreateFoundObject selectedItem = mPosts.get(position);
+        final String selectedKey = selectedItem.getKey();
+        Log.v("selected key =",selectedKey);
+        Log.v("url of image =",selectedItem.getImageUrl());
+        if(selectedItem.getImageUrl()=="NO-IMAGE") {
+            StorageReference imageRef = mStorage.getReferenceFromUrl(selectedItem.getImageUrl());
+            imageRef.delete().addOnSuccessListener(new OnSuccessListener<Void>() {
+                @Override
+                public void onSuccess(Void aVoid) {
+                    mDatabaseRef.child(selectedKey).removeValue();
+                    Toast.makeText(MyPostsFoundRV.this, "Item deleted", Toast.LENGTH_SHORT).show();
+                    Intent intent = new Intent(MyPostsFoundRV.this, MyPostsFoundRV.class);
+                    intent.putExtra("username", username);
+                    startActivity(intent);
+                    finish();
+                }
+            });
+        }
+        else
+        {
+            mDatabaseRef.child(selectedKey).removeValue();
+            Toast.makeText(MyPostsFoundRV.this, "Item deleted", Toast.LENGTH_SHORT).show();
+            Intent intent = new Intent(MyPostsFoundRV.this, MyPostsFoundRV.class);
+            intent.putExtra("username", username);
+            startActivity(intent);
+            finish();
+        }
+    }
 }

app/src/main/res/layout/image_item.xml

@@ -23,6 +23,7 @@
         <ImageView
             android:id="@+id/image_view_upload"
             android:layout_width="match_parent"
+            android:src="@drawable/camera"
             android:layout_height="200dp" />
 
     </LinearLayout>