display communities list

app/build.gradle.kts

@@ -44,6 +44,8 @@ dependencies {
     implementation(libs.annotation)
     implementation(libs.lifecycle.livedata.ktx)
     implementation(libs.lifecycle.viewmodel.ktx)
+    implementation(libs.legacy.support.v4)
+    implementation(libs.recyclerview)
     testImplementation(libs.junit)
     androidTestImplementation(libs.ext.junit)
     androidTestImplementation(libs.espresso.core)

app/src/main/java/com/example/komodohub/AdminActivity.java

@@ -1,17 +1,28 @@
 package com.example.komodohub;
 
+import android.content.Context;
 import android.os.Bundle;
 import android.view.View;
+import android.widget.ArrayAdapter;
+import android.widget.ListView;
 import android.widget.TextView;
 import android.widget.Toast;
 
 import androidx.activity.EdgeToEdge;
 import androidx.appcompat.app.AppCompatActivity;
 
+import com.example.komodohub.database.DatabaseAdapter;
+import com.example.komodohub.models.StableArrayAdapter;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
 public class AdminActivity extends AppCompatActivity {
     private DatabaseAdapter dbAdapter;
 
     private TextView newCommunityName;
+    private ListView adminCommunityView;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -24,6 +35,9 @@ protected void onCreate(Bundle savedInstanceState) {
         setContentView(R.layout.activity_admin_page);
 
         newCommunityName = findViewById(R.id.createCommunityBox);
+        adminCommunityView = findViewById(R.id.adminCommunitiesView);
+
+        reloadList();
     }
 
     public void createNewCommunity(View view)
@@ -34,11 +48,27 @@ public void createNewCommunity(View view)
 
             Toast t = Toast.makeText(this, "Successfully created new community", Toast.LENGTH_SHORT);
             t.show();
+
+            reloadList();
         }
         catch (Exception e)
         {
             Toast t = Toast.makeText(this, "Failed to create a new community", Toast.LENGTH_SHORT);
             t.show();
         }
     }
+
+    private void reloadList()
+    {
+        var communities = dbAdapter.getAllCommunities();
+
+        var list = new ArrayList<String>();
+        for (int i = 0; i < communities.size(); ++i) {
+            list.add(communities.get(i).Name);
+        }
+        final StableArrayAdapter adapter = new StableArrayAdapter(this,
+                android.R.layout.simple_list_item_1, list);
+        adminCommunityView.setAdapter(adapter);
+    }
+
 }

app/src/main/java/com/example/komodohub/LoginActivity.java

@@ -2,31 +2,15 @@
 
 import android.content.Intent;
 import android.os.Bundle;
-import android.view.Menu;
-import android.view.MenuItem;
 import android.view.View;
-import android.widget.RadioButton;
 import android.widget.TextView;
 import android.widget.Toast;
 
 import androidx.activity.EdgeToEdge;
 import androidx.appcompat.app.AppCompatActivity;
-import androidx.core.graphics.Insets;
-import androidx.core.view.ViewCompat;
-import androidx.core.view.WindowInsetsCompat;
-import androidx.navigation.NavController;
-import androidx.navigation.Navigation;
-import androidx.navigation.ui.AppBarConfiguration;
-import androidx.navigation.ui.NavigationUI;
-
-import com.example.komodohub.databinding.ActivityMainBinding;
-import com.google.android.material.snackbar.Snackbar;
-
-import org.w3c.dom.Text;
-
-import java.nio.charset.StandardCharsets;
-import java.security.MessageDigest;
-import java.util.Base64;
+
+import com.example.komodohub.database.DatabaseAdapter;
+
 import java.util.Objects;
 
 public class LoginActivity extends AppCompatActivity {

app/src/main/java/com/example/komodohub/MenuActivity.java

@@ -8,6 +8,8 @@
 import androidx.activity.EdgeToEdge;
 import androidx.appcompat.app.AppCompatActivity;
 
+import com.example.komodohub.database.DatabaseAdapter;
+
 public class MenuActivity extends AppCompatActivity {
     private DatabaseAdapter dbAdapter;
 

app/src/main/java/com/example/komodohub/ProfileActivity.java

@@ -5,6 +5,8 @@
 import androidx.activity.EdgeToEdge;
 import androidx.appcompat.app.AppCompatActivity;
 
+import com.example.komodohub.database.DatabaseAdapter;
+
 public class ProfileActivity extends AppCompatActivity {
     private DatabaseAdapter dbAdapter;
 

app/src/main/java/com/example/komodohub/SearchActivity.java

@@ -1,17 +1,14 @@
 package com.example.komodohub;
 
-import android.content.Intent;
 import android.os.Bundle;
-import android.view.View;
 import android.widget.RadioButton;
 import android.widget.RadioGroup;
 import android.widget.TextView;
-import android.widget.Toast;
 
 import androidx.activity.EdgeToEdge;
 import androidx.appcompat.app.AppCompatActivity;
 
-import java.util.Objects;
+import com.example.komodohub.database.DatabaseAdapter;
 
 public class SearchActivity extends AppCompatActivity {
     private DatabaseAdapter dbAdapter;

app/src/main/java/com/example/komodohub/DatabaseAdapter.java → app/src/main/java/com/example/komodohub/database/DatabaseAdapter.java

@@ -1,4 +1,4 @@
-package com.example.komodohub;
+package com.example.komodohub.database;
 
 import android.annotation.SuppressLint;
 import android.content.ContentValues;
@@ -87,7 +87,7 @@ public ArrayList<Community> getAllCommunities()
     {
         SQLiteDatabase db = dbHelper.getWritableDatabase();
 
-        Cursor c = db.rawQuery("SELECT * FROM Community", null);
+        Cursor c = db.rawQuery("SELECT * FROM Communities", null);
         c.moveToFirst();
 
         ArrayList<Community> communities = new ArrayList<>();

app/src/main/java/com/example/komodohub/models/StableArrayAdapter.java

@@ -0,0 +1,32 @@
+package com.example.komodohub.models;
+
+import android.content.Context;
+import android.widget.ArrayAdapter;
+
+import java.util.HashMap;
+import java.util.List;
+
+public class StableArrayAdapter extends ArrayAdapter<String> {
+
+    HashMap<String, Integer> mIdMap = new HashMap<String, Integer>();
+
+    public StableArrayAdapter(Context context, int textViewResourceId,
+                              List<String> objects) {
+        super(context, textViewResourceId, objects);
+        for (int i = 0; i < objects.size(); ++i) {
+            mIdMap.put(objects.get(i), i);
+        }
+    }
+
+    @Override
+    public long getItemId(int position) {
+        String item = getItem(position);
+        return mIdMap.get(item);
+    }
+
+    @Override
+    public boolean hasStableIds() {
+        return true;
+    }
+
+}

app/src/main/java/com/example/komodohub/placeholder/PlaceholderContent.java

@@ -0,0 +1,72 @@
+package com.example.komodohub.placeholder;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Helper class for providing sample content for user interfaces created by
+ * Android template wizards.
+ * <p>
+ * TODO: Replace all uses of this class before publishing your app.
+ */
+public class PlaceholderContent {
+
+    /**
+     * An array of sample (placeholder) items.
+     */
+    public static final List<PlaceholderItem> ITEMS = new ArrayList<PlaceholderItem>();
+
+    /**
+     * A map of sample (placeholder) items, by ID.
+     */
+    public static final Map<String, PlaceholderItem> ITEM_MAP = new HashMap<String, PlaceholderItem>();
+
+    private static final int COUNT = 25;
+
+    static {
+        // Add some sample items.
+        for (int i = 1; i <= COUNT; i++) {
+            addItem(createPlaceholderItem(i));
+        }
+    }
+
+    private static void addItem(PlaceholderItem item) {
+        ITEMS.add(item);
+        ITEM_MAP.put(item.id, item);
+    }
+
+    private static PlaceholderItem createPlaceholderItem(int position) {
+        return new PlaceholderItem(String.valueOf(position), "Item " + position, makeDetails(position));
+    }
+
+    private static String makeDetails(int position) {
+        StringBuilder builder = new StringBuilder();
+        builder.append("Details about Item: ").append(position);
+        for (int i = 0; i < position; i++) {
+            builder.append("\nMore details information here.");
+        }
+        return builder.toString();
+    }
+
+    /**
+     * A placeholder item representing a piece of content.
+     */
+    public static class PlaceholderItem {
+        public final String id;
+        public final String content;
+        public final String details;
+
+        public PlaceholderItem(String id, String content, String details) {
+            this.id = id;
+            this.content = content;
+            this.details = details;
+        }
+
+        @Override
+        public String toString() {
+            return content;
+        }
+    }
+}

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

@@ -41,4 +41,14 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
+    <ListView
+        android:id="@+id/adminCommunitiesView"
+        android:layout_width="351dp"
+        android:layout_height="456dp"
+        android:layout_marginTop="279dp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.5"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/values/dimens.xml

@@ -3,4 +3,5 @@
     <!-- Default screen margins, per the Android Design guidelines. -->
     <dimen name="activity_horizontal_margin">16dp</dimen>
     <dimen name="activity_vertical_margin">16dp</dimen>
+    <dimen name="text_margin">16dp</dimen>
 </resources>

gradle/libs.versions.toml

@@ -11,6 +11,8 @@ navigationUi = "2.6.0"
 annotation = "1.6.0"
 lifecycleLivedataKtx = "2.6.1"
 lifecycleViewmodelKtx = "2.6.1"
+legacySupportV4 = "1.0.0"
+recyclerview = "1.3.0"
 
 [libraries]
 junit = { group = "junit", name = "junit", version.ref = "junit" }
@@ -24,6 +26,8 @@ navigation-ui = { group = "androidx.navigation", name = "navigation-ui", version
 annotation = { group = "androidx.annotation", name = "annotation", version.ref = "annotation" }
 lifecycle-livedata-ktx = { group = "androidx.lifecycle", name = "lifecycle-livedata-ktx", version.ref = "lifecycleLivedataKtx" }
 lifecycle-viewmodel-ktx = { group = "androidx.lifecycle", name = "lifecycle-viewmodel-ktx", version.ref = "lifecycleViewmodelKtx" }
+legacy-support-v4 = { group = "androidx.legacy", name = "legacy-support-v4", version.ref = "legacySupportV4" }
+recyclerview = { group = "androidx.recyclerview", name = "recyclerview", version.ref = "recyclerview" }
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }