Add JustMe activity

app/src/main/AndroidManifest.xml

@@ -21,6 +21,12 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <activity
+            android:name=".MatrixActivity"
+            android:exported="false" />
+        <activity
+            android:name=".JustMeActivity"
+            android:exported="false" />
     </application>
 
 </manifest>

app/src/main/java/com/example/codexone/JustMeActivity.kt

@@ -0,0 +1,11 @@
+package com.example.codexone
+
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+
+class JustMeActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_just_me)
+    }
+}

app/src/main/java/com/example/codexone/MainActivity.kt

@@ -1,5 +1,6 @@
 package com.example.codexone
 
+import android.content.Intent
 import android.os.Bundle
 import android.widget.Button
 import android.widget.EditText
@@ -18,18 +19,22 @@ class MainActivity : AppCompatActivity() {
 
         // Get references to the views
         val usernameEditText: EditText = findViewById(R.id.usernameEditText)
+        val emailEditText: EditText = findViewById(R.id.emailEditText)
         val passwordEditText: EditText = findViewById(R.id.passwordEditText)
         val loginButton: Button = findViewById(R.id.loginButton)
         val forgotPasswordText: TextView = findViewById(R.id.forgotPasswordText)
+        val helpButton: Button = findViewById(R.id.helpButton)
+        val matrixButton: Button = findViewById(R.id.matrixButton)
 
         // Set a click listener for the login button
         loginButton.setOnClickListener {
             val username = usernameEditText.text.toString()
+            val email = emailEditText.text.toString()
             val password = passwordEditText.text.toString()
 
             // Basic validation
-            if (username.isEmpty() || password.isEmpty()) {
-                Toast.makeText(this, "Please enter both username and password", Toast.LENGTH_SHORT).show()
+            if (username.isEmpty() || email.isEmpty() || password.isEmpty()) {
+                Toast.makeText(this, "Please fill in all fields", Toast.LENGTH_SHORT).show()
             } else {
                 // In a real app, you would check credentials here
                 // For this example, we'll just show a Toast
@@ -39,6 +44,14 @@ class MainActivity : AppCompatActivity() {
             }
         }
 
+        helpButton.setOnClickListener {
+            Toast.makeText(this, "Help clicked", Toast.LENGTH_SHORT).show()
+        }
+
+        matrixButton.setOnClickListener {
+            startActivity(Intent(this, MatrixActivity::class.java))
+        }
+
         // Set a click listener for the forgot password text
         forgotPasswordText.setOnClickListener {
             // Handle forgot password click (e.g., open a new screen or display a message)

app/src/main/java/com/example/codexone/MatrixActivity.kt

@@ -0,0 +1,11 @@
+package com.example.codexone
+
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+
+class MatrixActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_matrix)
+    }
+}

app/src/main/java/com/example/codexone/MatrixView.kt

@@ -0,0 +1,70 @@
+package com.example.codexone
+
+import android.content.Context
+import android.graphics.Canvas
+import android.graphics.Color
+import android.graphics.Paint
+import android.graphics.Typeface
+import android.os.Handler
+import android.os.Looper
+import android.util.AttributeSet
+import android.view.View
+import kotlin.random.Random
+
+class MatrixView @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null
+) : View(context, attrs) {
+
+    private val paint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+        color = Color.GREEN
+        textSize = 20f * resources.displayMetrics.density
+        typeface = Typeface.MONOSPACE
+    }
+
+    private val charHeight: Float = paint.textSize
+    private var columns: Int = 0
+    private var offsets: FloatArray = FloatArray(0)
+    private val random = Random
+
+    private val handler = Handler(Looper.getMainLooper())
+    private val updateRunnable = object : Runnable {
+        override fun run() {
+            for (i in offsets.indices) {
+                offsets[i] += charHeight
+                if (offsets[i] > height) offsets[i] = 0f
+            }
+            invalidate()
+            handler.postDelayed(this, 50)
+        }
+    }
+
+    init {
+        handler.post(updateRunnable)
+    }
+
+    override fun onSizeChanged(w: Int, h: Int, oldw: Int, oldh: Int) {
+        super.onSizeChanged(w, h, oldw, oldh)
+        val charWidth = paint.measureText("0")
+        columns = (w / charWidth + 1).toInt()
+        offsets = FloatArray(columns) { random.nextFloat() * h }
+    }
+
+    override fun onDraw(canvas: Canvas) {
+        super.onDraw(canvas)
+        val charWidth = paint.measureText("0")
+        for (i in 0 until columns) {
+            var y = offsets[i]
+            while (y > -charHeight) {
+                val c = randomChar()
+                canvas.drawText(c.toString(), i * charWidth, y, paint)
+                y -= charHeight
+            }
+        }
+    }
+
+    private fun randomChar(): Char {
+        val chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+        return chars[random.nextInt(chars.length)]
+    }
+}

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

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <TextView
+        android:id="@+id/justMeTextView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="I am back"
+        android:layout_gravity="center" />
+</FrameLayout>

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

@@ -13,14 +13,24 @@
         android:inputType="textEmailAddress"
         android:layout_marginBottom="16dp"/>
 
+    <!-- Email EditText -->
+    <EditText
+        android:id="@+id/emailEditText"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:hint="Email"
+        android:inputType="textEmailAddress"
+        android:layout_below="@id/usernameEditText"
+        android:layout_marginBottom="16dp"/>
+
     <!-- Password EditText -->
     <EditText
         android:id="@+id/passwordEditText"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:hint="Password"
         android:inputType="textPassword"
-        android:layout_below="@id/usernameEditText"
+        android:layout_below="@id/emailEditText"
         android:layout_marginBottom="16dp"/>
 
     <!-- Login Button -->
@@ -40,4 +50,24 @@
         android:textColor="#0000FF"
         android:layout_below="@id/loginButton"
         android:layout_marginTop="10dp"/>
+
+    <!-- Help Button -->
+    <Button
+        android:id="@+id/helpButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Help"
+        android:layout_alignParentEnd="true"
+        android:layout_alignParentBottom="true"
+        android:layout_margin="16dp" />
+
+    <!-- Matrix Button -->
+    <Button
+        android:id="@+id/matrixButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Matrix"
+        android:layout_alignParentStart="true"
+        android:layout_alignParentBottom="true"
+        android:layout_margin="16dp" />
 </RelativeLayout>

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

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#000000">
+
+    <com.example.codexone.MatrixView
+        android:id="@+id/matrixView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+</FrameLayout>