Book Resource

Android Studio/LRC Book Android Programming With Kotlin For Beginners/Chapter01/HelloWorldActivity.kt

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+package com.gamecodeschool.helloworld
+
+import android.os.Bundle
+import com.google.android.material.snackbar.Snackbar
+import androidx.appcompat.app.AppCompatActivity
+import android.view.Menu
+import android.view.MenuItem
+
+import kotlinx.android.synthetic.main.activity_hello_world.*
+
+class HelloWorldActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_hello_world)
+        setSupportActionBar(toolbar)
+
+        fab.setOnClickListener { view ->
+            Snackbar.make(view, "Replace with your own action",
+                    Snackbar.LENGTH_LONG)
+                    .setAction("Action", null).show()
+        }
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
+        // Inflate the menu; this adds items to the action bar if it is present.
+        menuInflater.inflate(R.menu.menu_hello_world, menu)
+        return true
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        // Handle action bar item clicks here. The action bar will
+        // automatically handle clicks on the Home/Up button, so long
+        // as you specify a parent activity in AndroidManifest.xml.
+        return when (item.itemId) {
+            R.id.action_settings -> true
+            else -> super.onOptionsItemSelected(item)
+        }
+    }
+}
+

Android Studio/LRC Book Android Programming With Kotlin For Beginners/Chapter01/MainActivity.kt

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+package com.gamecodeschool.helloworld
+
+import android.os.Bundle
+import com.google.android.material.snackbar.Snackbar
+import androidx.appcompat.app.AppCompatActivity
+import android.view.Menu
+import android.view.MenuItem
+
+import kotlinx.android.synthetic.main.activity_hello_world.*
+
+class MainActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+        setSupportActionBar(toolbar)
+
+        fab.setOnClickListener { view ->
+            Snackbar.make(view, "Replace with your own action",
+                    Snackbar.LENGTH_LONG)
+                    .setAction("Action", null).show()
+        }
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
+        // Inflate the menu; this adds items to the action bar if it is present.
+        menuInflater.inflate(R.menu.menu_hello_world, menu)
+        return true
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        // Handle action bar item clicks here. The action bar will
+        // automatically handle clicks on the Home/Up button, so long
+        // as you specify a parent activity in AndroidManifest.xml.
+        return when (item.itemId) {
+            R.id.action_settings -> true
+            else -> super.onOptionsItemSelected(item)
+        }
+    }
+}
+

Android Studio/LRC Book Android Programming With Kotlin For Beginners/Chapter01/README.txt

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+Copy & pasting this code will not work. It is provided here for reference only

Android Studio/LRC Book Android Programming With Kotlin For Beginners/Chapter01/content_hello_world.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<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"
+    android:layout_height="match_parent"
+    app:layout_behavior="@string/appbar_scrolling_view_behavior"
+    tools:context=".HelloWorldActivity"
+    tools:showIn="@layout/activity_hello_world">
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Hello World!"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

Android Studio/LRC Book Android Programming With Kotlin For Beginners/Chapter01/content_main.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<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"
+    android:layout_height="match_parent"
+    app:layout_behavior="@string/appbar_scrolling_view_behavior"
+    tools:context=".HelloWorldActivity"
+    tools:showIn="@layout/activity_hello_world">
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Hello World!"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

Android Studio/LRC Book Android Programming With Kotlin For Beginners/Chapter01/desktop.ini

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+[ViewState]
+Mode=
+Vid=
+FolderType=Documents

Android Studio/LRC Book Android Programming With Kotlin For Beginners/Chapter02/HelloWorldActivity.kt

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+package com.gamecodeschool.helloworld
+
+import android.os.Bundle
+import android.util.Log
+import com.google.android.material.snackbar.Snackbar
+import androidx.appcompat.app.AppCompatActivity
+import android.view.Menu
+import android.view.MenuItem
+import android.view.View
+import android.widget.Toast
+
+import kotlinx.android.synthetic.main.activity_hello_world.*
+
+class HelloWorldActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_hello_world)
+        setSupportActionBar(toolbar)
+
+        fab.setOnClickListener { view ->
+            Snackbar.make(view, "Replace with your own action",
+                    Snackbar.LENGTH_LONG)
+                    .setAction("Action", null).show()
+        }
+
+        // Your code goes here
+        Toast.makeText(this, "Can you see me?",
+                Toast.LENGTH_SHORT).show()
+
+        Log.i("info", "Done creating the app")
+
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
+        // Inflate the menu; this adds items to the action bar if it is present.
+        menuInflater.inflate(R.menu.menu_hello_world, menu)
+        return true
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        // Handle action bar item clicks here. The action bar will
+        // automatically handle clicks on the Home/Up button, so long
+        // as you specify a parent activity in AndroidManifest.xml.
+        return when (item.itemId) {
+            R.id.action_settings -> true
+            else -> super.onOptionsItemSelected(item)
+        }
+    }
+
+    fun topClick(v: View) {
+        Toast.makeText(this, "Top button clicked",
+                Toast.LENGTH_SHORT).show()
+
+        Log.i("info", "The user clicked the top button")
+    }
+
+    fun bottomClick(v: View) {
+        Toast.makeText(this, "Bottom button clicked",
+                Toast.LENGTH_SHORT).show()
+
+        Log.i("info", "The user clicked the bottom button")
+    }
+
+}
+

Android Studio/LRC Book Android Programming With Kotlin For Beginners/Chapter02/MainActivity.kt

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+package com.gamecodeschool.helloworld
+
+import android.os.Bundle
+import android.util.Log
+import com.google.android.material.snackbar.Snackbar
+import androidx.appcompat.app.AppCompatActivity
+import android.view.Menu
+import android.view.MenuItem
+import android.view.View
+import android.widget.Toast
+
+import kotlinx.android.synthetic.main.activity_hello_world.*
+
+class MainActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+        setSupportActionBar(toolbar)
+
+        fab.setOnClickListener { view ->
+            Snackbar.make(view, "Replace with your own action",
+                    Snackbar.LENGTH_LONG)
+                    .setAction("Action", null).show()
+        }
+
+        // Your code goes here
+        Toast.makeText(this, "Can you see me?",
+                Toast.LENGTH_SHORT).show()
+
+        Log.i("info", "Done creating the app")
+
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
+        // Inflate the menu; this adds items to the action bar if it is present.
+        menuInflater.inflate(R.menu.menu_hello_world, menu)
+        return true
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        // Handle action bar item clicks here. The action bar will
+        // automatically handle clicks on the Home/Up button, so long
+        // as you specify a parent activity in AndroidManifest.xml.
+        return when (item.itemId) {
+            R.id.action_settings -> true
+            else -> super.onOptionsItemSelected(item)
+        }
+    }
+
+    fun topClick(v: View) {
+        Toast.makeText(this, "Top button clicked",
+                Toast.LENGTH_SHORT).show()
+
+        Log.i("info", "The user clicked the top button")
+    }
+
+    fun bottomClick(v: View) {
+        Toast.makeText(this, "Bottom button clicked",
+                Toast.LENGTH_SHORT).show()
+
+        Log.i("info", "The user clicked the bottom button")
+    }
+
+}
+

Android Studio/LRC Book Android Programming With Kotlin For Beginners/Chapter02/content_hello_world.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<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"
+    android:layout_height="match_parent"
+    app:layout_behavior="@string/appbar_scrolling_view_behavior"
+    tools:context=".HelloWorldActivity"
+    tools:showIn="@layout/activity_hello_world">
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Hello World!"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <Button
+        android:id="@+id/buttonTop"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="27dp"
+        android:onClick="topClick"
+        android:text="Button"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+
+    <Button
+        android:id="@+id/buttonBottom"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="25dp"
+        android:onClick="bottomClick"
+        android:text="Button"
+        app:layout_constraintStart_toStartOf="@+id/buttonTop"
+        app:layout_constraintTop_toBottomOf="@+id/buttonTop" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

Android Studio/LRC Book Android Programming With Kotlin For Beginners/Chapter02/content_main.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<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"
+    android:layout_height="match_parent"
+    app:layout_behavior="@string/appbar_scrolling_view_behavior"
+    tools:context=".HelloWorldActivity"
+    tools:showIn="@layout/activity_hello_world">
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Hello World!"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <Button
+        android:id="@+id/buttonTop"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="27dp"
+        android:onClick="topClick"
+        android:text="Button"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+
+    <Button
+        android:id="@+id/buttonBottom"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="25dp"
+        android:onClick="bottomClick"
+        android:text="Button"
+        app:layout_constraintStart_toStartOf="@+id/buttonTop"
+        app:layout_constraintTop_toBottomOf="@+id/buttonTop" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

Android Studio/LRC Book Android Programming With Kotlin For Beginners/Chapter03/README.txt

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+All the code in chapter 3 is auto-generated in Android Studio

Android Studio/LRC Book Android Programming With Kotlin For Beginners/Chapter04/LayoutExploration/java/MainActivity.kt

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+package com.gamecodeschool.exploringlayouts
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.view.View
+
+class MainActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.main_menu);
+    }
+
+    fun loadConstraintLayout(v: View) {
+        setContentView(R.layout.activity_main)
+    }
+
+    fun loadTableLayout(v: View) {
+        setContentView(R.layout.my_table_layout)
+    }
+
+    fun loadMenuLayout(v: View) {
+        setContentView(R.layout.main_menu)
+    }
+
+
+}