Bugs Fixed By Palash

app/src/main/java/com/example/todoappjava/MainActivity.java

@@ -9,6 +9,7 @@
 import android.os.Bundle;
 import android.widget.Button;
 import android.widget.EditText;
+import android.widget.TextView;
 import android.widget.Toast;
 
 import com.example.todoappjava.db.DatabaseHelper;
@@ -23,45 +24,55 @@ public class MainActivity extends AppCompatActivity implements TodoAdapter.OnIte
 
     private final ArrayList<TodoData> todoList = new ArrayList<>();
     private final TodoAdapter todoAdapter = new TodoAdapter(todoList, this);
-
     private final DatabaseHelper myDB = new DatabaseHelper(this);
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
-
         initViews();
         rvTodos.setLayoutManager(new LinearLayoutManager(this));
         rvTodos.setAdapter(todoAdapter);
         loadTodos();
-
         btnAddTodo.setOnClickListener(v -> addTodo());
     }
 
     private void addTodo() {
         String text = etTodo.getText().toString();
-        boolean isSuccess = myDB.insertData(text);
-        if(isSuccess){
-            Toast.makeText(this, "Todo added successfully!", Toast.LENGTH_SHORT).show();
+        if(text.isEmpty())
+        {
+            // Bug 1 fixed
+            Toast.makeText(MainActivity.this, "Empty TODO can't be saved", Toast.LENGTH_SHORT).show();
+        }
+        else{
+            boolean isSuccess = myDB.insertData(text);
+            //App Not Crashing
+            Toast.makeText(MainActivity.this, "Todo added successfully!", Toast.LENGTH_SHORT).show();
             loadTodos();
-        } else {
-            Toast.makeText(this, "Something went wrong!", Toast.LENGTH_SHORT).show();
+            //Solved bug 2
+            etTodo.setText("");
         }
     }
-
+    private TextView tt;
     @SuppressLint("NotifyDataSetChanged")
     private void loadTodos() {
         Cursor cursor = myDB.getAllData();
         if(cursor!=null){
+            tt=findViewById(R.id.textView);
             if (cursor.moveToFirst()) {
+                tt.setText("");
                 String todoText;
                 int todoId;
+                // bug 3 Fixed
                 do {
                     todoId = cursor.getInt(cursor.getColumnIndex(DatabaseHelper.TODO_ID));
                     todoText = cursor.getString(cursor.getColumnIndex(DatabaseHelper.TODO_TEXT));
-                    todoList.add(new TodoData(todoId, todoText));
                 } while (cursor.moveToNext());
+                todoList.add(new TodoData(todoId, todoText));
+            }
+            else{
+                // bug 7 fixed
+                tt.setText("TODO LIST Empty  !! \n ADD A Task to see the LIST .");
             }
             cursor.close();
             todoAdapter.notifyDataSetChanged();
@@ -73,7 +84,6 @@ private void initViews() {
         etTodo = findViewById(R.id.etTodo);
         btnAddTodo = findViewById(R.id.btnAddTodo);
     }
-
     @Override
     public void onDeleteClick(int position) {
         String itemIdToDelete = String.valueOf(todoList.get(position).getId());

app/src/main/java/com/example/todoappjava/TodoAdapter.java

@@ -46,6 +46,7 @@ class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener
 
         public ViewHolder(@NonNull View itemView) {
             super(itemView);
+            tvTodoId=itemView.findViewById(R.id.tvTodoId);
             tvTodoText = itemView.findViewById(R.id.tvTodoText);
             btnDelete = itemView.findViewById(R.id.btnDelete);
 

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

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
+<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"
@@ -30,17 +29,31 @@
             android:layout_width="0dp"
             android:layout_height="match_parent"
             android:layout_marginHorizontal="8dp"
-            android:inputType="textCapSentences"
             android:layout_weight="2"
-            android:hint="Enter Todo Text" />
+            android:hint="@string/enter_todo_text"
+            android:inputType="textCapSentences"
+            tools:ignore="TextContrastCheck" />
 
         <Button
             android:id="@+id/btnAddTodo"
             android:layout_width="0dp"
             android:layout_height="match_parent"
             android:layout_marginHorizontal="8dp"
             android:layout_weight="1"
-            android:text="Add" />
+            android:text="@string/add" />
     </androidx.appcompat.widget.LinearLayoutCompat>
 
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="294dp"
+        android:layout_height="165dp"
+        android:gravity="center"
+        android:textSize="20sp"
+        android:textStyle="bold"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.433" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -13,7 +13,7 @@
         android:layout_height="wrap_content"
         android:gravity="center"
         android:paddingHorizontal="14dp"
-        android:text="1"
+        android:text="@string/_1"
         android:textSize="20sp" />
 
     <TextView
@@ -25,7 +25,7 @@
         android:layout_toStartOf="@+id/btnDelete"
         android:layout_toEndOf="@+id/tvTodoId"
         android:paddingEnd="6dp"
-        android:text="Some Todo Text"
+        android:text="@string/some_todo_text"
         android:textColor="@color/black"
         android:textSize="20sp"
         tools:ignore="RtlSymmetry" />
@@ -43,6 +43,7 @@
         android:layout_marginBottom="0dp"
         android:background="?android:selectableItemBackground"
         android:foregroundGravity="right"
-        android:src="@drawable/ic_delete" />
+        android:src="@drawable/ic_delete"
+        tools:ignore="SpeakableTextPresentCheck,TouchTargetSizeCheck" />
 
 </RelativeLayout>

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

@@ -1,3 +1,7 @@
 <resources>
     <string name="app_name">Todo App Java</string>
+    <string name="_1">1</string>
+    <string name="some_todo_text">Some Todo Text</string>
+    <string name="add">Add</string>
+    <string name="enter_todo_text">Enter Todo Text</string>
 </resources>