17 Task TMS AN-14

app/build.gradle

@@ -35,6 +35,7 @@ dependencies {
 
     implementation 'androidx.core:core-ktx:1.7.0'
     implementation 'androidx.appcompat:appcompat:1.4.1'
+    implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0'
     implementation 'com.google.android.material:material:1.5.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
     testImplementation 'junit:junit:4.13.2'

app/src/main/AndroidManifest.xml

@@ -9,6 +9,9 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.TmsTemp">
+        <activity
+            android:name=".TransformatorActivity"
+            android:exported="false" />
         <activity
             android:name=".MainActivity"
             android:exported="true">

app/src/main/java/com/github/krottv/tmstemp/MainActivity.kt

@@ -1,11 +1,80 @@
 package com.github.krottv.tmstemp
 
+import android.app.Activity
+import android.content.Intent
+import androidx.lifecycle.ViewModelProvider
 import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
+import android.widget.Button
+import android.widget.TextView
+import androidx.lifecycle.ViewModelProviders
+
+private const val KEY_CURRENT_INDEX = "Current index value"
+private const val KEY_NAME = "Name values"
+private const val REQUEST_CODE_TRANSFORM = 0
 
 class MainActivity : AppCompatActivity() {
+
+    private val studentViewModel: StudentViewModel by lazy {
+        ViewModelProviders.of(this).get(StudentViewModel::class.java)
+    }
+
+    private lateinit var textView: TextView
+    private lateinit var nextButton: Button
+    private lateinit var transformButton: Button
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
+
+        val currentIndex = savedInstanceState?.getInt(KEY_CURRENT_INDEX, 0) ?: 0
+        studentViewModel.setIndex(currentIndex)
+        val studentNameList = savedInstanceState?.getStringArrayList(KEY_NAME)
+        if (studentNameList != null){
+            studentViewModel.setNameList(studentNameList)
+        }
+
+        textView = findViewById(R.id.name_of_student)
+        nextButton = findViewById(R.id.next_button)
+        transformButton = findViewById(R.id.transform_button)
+
+        nextButton.setOnClickListener {
+            studentViewModel.implementCI()
+            updateScreenText()
+        }
+        transformButton.setOnClickListener {
+            val name = studentViewModel.getName()
+            val intent = TransformatorActivity.newIntent(this@MainActivity, name)
+            startActivityForResult(intent, REQUEST_CODE_TRANSFORM)
+        }
+
+        updateScreenText()
+    }
+
+    override fun onSaveInstanceState(savedInstanceState: Bundle) {
+        super.onSaveInstanceState(savedInstanceState)
+        savedInstanceState.putInt(KEY_CURRENT_INDEX, studentViewModel.getIndex())
+        savedInstanceState.putStringArrayList(KEY_NAME, studentViewModel.getNameList())
+    }
+
+    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+        super.onActivityResult(requestCode, resultCode, data)
+
+        if (resultCode != Activity.RESULT_OK){
+            return
+        }
+
+        if (requestCode == REQUEST_CODE_TRANSFORM){
+            val requestedBool = data?.getBooleanExtra(EXTRA_IS_NAME_TRANSFORMED, false) ?: false
+            if (requestedBool){
+                studentViewModel.setName()
+                updateScreenText()
+            }
+        }
+    }
+
+    private fun updateScreenText(){
+        val textResId = studentViewModel.getName()
+        textView.setText(textResId)
     }
 }

app/src/main/java/com/github/krottv/tmstemp/Student.kt

@@ -0,0 +1,3 @@
+package com.github.krottv.tmstemp
+
+data class Student(var name: String){}

app/src/main/java/com/github/krottv/tmstemp/StudentViewModel.kt

@@ -0,0 +1,59 @@
+package com.github.krottv.tmstemp
+
+import androidx.lifecycle.ViewModel
+
+class StudentViewModel: ViewModel() {
+
+    private var currentIndex = 0
+    private var transformMessage = "Transformed_"
+
+    private val studentList = listOf(
+        Student("John"),
+        Student("Mike"),
+        Student("Brad"),
+        Student("Nick"),
+        Student("Bob"),
+        Student("Tim"),
+        Student("Corey"),
+        Student("Eric"),
+        Student("Hanna"),
+        Student("Jim"))
+
+    fun getName(): String{
+        return studentList[currentIndex].name
+    }
+
+    fun setNameList(array: ArrayList<String>){
+        for (indexInArray in array.indices){
+            studentList[indexInArray].name = array[indexInArray]
+        }
+    }
+
+    fun getNameList(): ArrayList<String>{
+        val array = arrayListOf<String>()
+        for (index in studentList.indices){
+            array.add(studentList[index].name)
+        }
+        return array
+    }
+
+    fun implementCI(){
+        currentIndex = (currentIndex + 1) % studentList.size
+    }
+
+    fun getIndex(): Int{
+        return currentIndex
+    }
+
+    fun setIndex(value: Int){
+        currentIndex = value
+    }
+
+    private fun transformName(){
+        studentList[currentIndex].name = transformMessage + studentList[currentIndex].name
+    }
+
+    fun setName(){
+        transformName()
+    }
+}

app/src/main/java/com/github/krottv/tmstemp/TransformatorActivity.kt

@@ -0,0 +1,91 @@
+package com.github.krottv.tmstemp
+
+import android.app.Activity
+import android.content.Context
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.widget.Button
+import android.widget.TextView
+import android.widget.Toast
+import android.widget.Toast.LENGTH_SHORT
+import androidx.lifecycle.ViewModelProviders
+import kotlin.properties.Delegates
+
+private const val EXTRA_NAME = "Name of student"
+private const val KEY_IS_TRANSFORMED = "Is name transformed key"
+private const val KEY_NAME = "Current name"
+const val EXTRA_IS_NAME_TRANSFORMED = "Is name transformed extra"
+
+class TransformatorActivity : AppCompatActivity() {
+
+    private val transformatorViewModel by lazy {
+        ViewModelProviders.of(this@TransformatorActivity).get(TransformatorViewModel::class.java)
+    }
+
+    private lateinit var textView: TextView
+    private lateinit var transformButton: Button
+    private var transformMessage = "Transformed_"
+    private val regEx = "^(Transformed)\\_(?!Transformed_).*"
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_transformator)
+
+        val isTransformed = savedInstanceState?.getBoolean(KEY_IS_TRANSFORMED, false) ?: false
+        transformatorViewModel.setIsTransformed(isTransformed)
+        val currentName = savedInstanceState?.getString(KEY_NAME, "Null") ?: "Null"
+        transformatorViewModel.setText(currentName)
+
+        val textName = intent.getStringExtra(EXTRA_NAME)
+        if (textName != null) {
+            transformatorViewModel.setText(textName)
+        }
+        transformButton = findViewById(R.id.transform_button)
+        textView = findViewById(R.id.text_transformator)
+
+        transformButton.setOnClickListener {
+            transformText()
+            updateScreen()
+        }
+
+        updateScreen()
+    }
+
+    override fun onSaveInstanceState(savedInstanceState: Bundle) {
+        super.onSaveInstanceState(savedInstanceState)
+        savedInstanceState.putString(KEY_NAME, transformatorViewModel.getText())
+        savedInstanceState.putBoolean(KEY_IS_TRANSFORMED, transformatorViewModel.getIsTransformed())
+    }
+
+    companion object{
+        fun newIntent(context: Context, name: String): Intent{
+            return Intent(context, TransformatorActivity::class.java).apply {
+                putExtra(EXTRA_NAME, name)
+            }
+        }
+    }
+
+    private fun sendResult(){
+        val data = Intent().apply {
+            putExtra(EXTRA_IS_NAME_TRANSFORMED, transformatorViewModel.getIsTransformed())
+        }
+
+        setResult(Activity.RESULT_OK, data)
+    }
+
+    private fun updateScreen(){
+        textView.setText(transformatorViewModel.getText())
+        sendResult()
+    }
+
+    private fun transformText(){
+        if (!(transformatorViewModel.getText().matches(regEx.toRegex()))) {
+            transformatorViewModel.setText(transformMessage + transformatorViewModel.getText())
+            transformatorViewModel.setIsTransformed(true)
+        } else {
+            val toastMessage = R.string.already_transformed_toast
+            Toast.makeText(this, toastMessage, LENGTH_SHORT).show()
+        }
+    }
+}

app/src/main/java/com/github/krottv/tmstemp/TransformatorViewModel.kt

@@ -0,0 +1,28 @@
+package com.github.krottv.tmstemp
+
+import androidx.lifecycle.ViewModel
+
+class TransformatorViewModel: ViewModel() {
+
+    private var text: String = ""
+    private var isTransformed = false
+    private val regEx: Regex = "^(Transformed)\\_.*".toRegex()
+
+    fun getText(): String{
+        return text
+    }
+
+    fun setText(value: String){
+        if (!text.matches(regEx)) {
+            text = value
+        }
+    }
+
+    fun getIsTransformed(): Boolean{
+        return isTransformed
+    }
+
+    fun setIsTransformed(value: Boolean){
+        isTransformed = value
+    }
+}

app/src/main/res/drawable/button_state.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle" android:padding="10dp">
+    <!-- you can use any color you want I used here gray color-->
+    <solid android:color="#b9faf4"/>
+    <corners android:radius="12dp"/>
+</shape>

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

@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    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"
+    android:orientation="vertical"
+    android:background="#ffbaf1"
+    tools:context=".MainActivity">
+
+    <FrameLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center_horizontal"
+        android:layout_marginTop="80dp">
+
+        <TextView
+            android:id="@+id/name_of_student"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            tools:text="@string/name_of_student_1"
+            android:textColor="@color/black"
+            android:textSize="24sp" />
+
+    </FrameLayout>
+
+    <Button
+        android:id="@+id/next_button"
+        android:layout_marginTop="10dp"
+        android:layout_width="180dp"
+        android:layout_height="70dp"
+        android:background="@drawable/button_state"
+        android:textColor="@color/black"
+        android:textSize="18sp"
+        android:layout_gravity="center_horizontal"
+        android:text="@string/next_button"/>
+
+    <Button
+        android:id="@+id/transform_button"
+        android:layout_marginTop="10dp"
+        android:layout_width="150dp"
+        android:layout_height="70dp"
+        android:background="@drawable/button_state"
+        android:textColor="@color/black"
+        android:textSize="17sp"
+        android:layout_gravity="center_horizontal"
+        android:text="@string/transform_button"/>
+
+</LinearLayout>

app/src/main/res/layout-land/activity_transformator.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    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"
+    android:background="#ffbaf1"
+    android:orientation="vertical"
+    tools:context=".TransformatorActivity">
+
+    <TextView
+        android:id="@+id/text_transformator"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        tools:text="@string/name_of_student_1"
+        android:textColor="@color/black"
+        android:textSize="24sp"
+        android:layout_marginTop="100dp"
+        android:layout_gravity="center_horizontal"/>
+
+    <Button
+        android:id="@+id/transform_button"
+        android:layout_marginTop="10dp"
+        android:layout_width="150dp"
+        android:layout_height="70dp"
+        android:background="@drawable/button_state"
+        android:textColor="@color/black"
+        android:textSize="17sp"
+        android:layout_gravity="center_horizontal"
+        android:text="@string/transform_button"/>
+
+</LinearLayout>