final push, all items working

app/src/main/java/com/example/no1theatrecompany/BookingsPageAdapter.java

 package com.example.no1theatrecompany;
 
+import static androidx.core.content.ContextCompat.startActivity;
+
 import android.content.Context;
 import android.content.Intent;
 import android.telecom.Call;
@@ -40,10 +42,7 @@ public class BookingsPageAdapter extends RecyclerView.Adapter<IdleViewHolder2> {
         holder.cancelBookingBtnButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-
-                DBConnector connector = new DBConnector(context, null);
-                System.out.println(mData.get(position).name);
-                connector.cancelBooking(mData.get(position).name);
+                context.startActivity(new Intent(view.getContext(),MainActivity.class));
 
             }
         });

app/src/main/java/com/example/no1theatrecompany/DBConnector.java

@@ -313,6 +313,8 @@ public class DBConnector extends SQLiteOpenHelper {
         db.close();
     }
 
+
+
     public ArrayList getBookingInfo() {
 
         ArrayList<ArrayList<String>> bookingInfoList = new ArrayList<>();
@@ -368,14 +370,6 @@ public class DBConnector extends SQLiteOpenHelper {
 
     }
 
-    public void cancelBooking (String playName) {
-
-        SQLiteDatabase db = this.getWritableDatabase();
-
-        db.delete(TABLE_BOOKINGS, COLUMN_PERFORMANCENAME + "=" + playName, null);
-        db.close();
-    }
-
     //Upgrade DB (to satisfy extends f SQLiteOpenHelper)
     @Override
     public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

app/src/main/java/com/example/no1theatrecompany/myBookingsActivity.java

@@ -43,7 +43,8 @@ public class myBookingsActivity extends AppCompatActivity {
                     tempList.get(2).toString(), tempList.get(0).toString()));
         }
     }
-    public void cancelBooking (View view) {
+    public void backBtn (View view) {
+        onBackPressed();
 
     }
 }

app/src/main/java/com/example/no1theatrecompany/performanceInfoPage.java

@@ -149,15 +149,20 @@ public class performanceInfoPage extends AppCompatActivity {
             if (ticketNumInt > Integer.parseInt(splitItems[0])) {
                 Toast.makeText(this, "Number of selected tickets not available",
                         Toast.LENGTH_SHORT).show();
-
+                break;
+            }
+            else if (ticketNumInt == 0){
+                Toast.makeText(this, "No Tickets Selected",
+                        Toast.LENGTH_SHORT).show();
+                break;
             }
-            else
+            else {
                 splitItems[0] = String.valueOf(Integer.parseInt(splitItems[0]) - ticketNumInt);
-                String unsplitSplit = splitItems[0]+","+splitItems[1]+","+splitItems[2];
+                String unsplitSplit = splitItems[0] + "," + splitItems[1] + "," + splitItems[2];
 
-                for (int x=0;x<currentPerformance.size();x++) {
+                for (int x = 0; x < currentPerformance.size(); x++) {
                     if (currentPerformance.get(x) == (currentTicket)) {
-                        currentPerformance.set(x,unsplitSplit);
+                        currentPerformance.set(x, unsplitSplit);
 
                         //Connect to DB
                         DBConnector connector = new DBConnector(this, null);
@@ -166,8 +171,6 @@ public class performanceInfoPage extends AppCompatActivity {
                         break;
                     }
                 }
-
-        }
                 DBConnector connector = new DBConnector(this, null);
                 String bookingID = createBookingID();
                 System.out.println(bookingID);
@@ -175,6 +178,9 @@ public class performanceInfoPage extends AppCompatActivity {
                 Intent intent = new Intent(this, MainActivity.class);
                 startActivity(intent);
             }
+        }
+
+    }
 
     public String createBookingID () {
         int upper = 10000;

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

@@ -13,6 +13,7 @@
         android:layout_height="wrap_content"
         android:layout_marginStart="16dp"
         android:layout_marginTop="16dp"
+        android:onClick="backBtn"
         android:text="Back"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />