Kotlin(5) - 심리테스트 앱 만들기

유튜버 Code with Joyce님의 강의를 바탕으로 Android Studio(Kotlin)을 활용하여 심리테스트 앱을 만들어 보았습니다.

노트북 : M1 맥북에어

device : Pixel 2 API 28 arm64-v8a

---

[layout]

//activity_main.xml

<?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"
    tools:context=".MainActivity"
    >

    <fragment
        android:id="@+id/nav_host_fragment"
        android:name="androidx.navigation.fragment.NavHostFragment"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:defaultNavHost="true"
        app:navGraph="@navigation/nav_graph"/>
    
</androidx.constraintlayout.widget.ConstraintLayout>

---

//fragment_main.xml 

<?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"
    android:background="@drawable/background"
    tools:context=".fragment.MainFragment">

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="76dp"
        android:fontFamily="sans-serif-black"
        android:text="@string/main_title"
        android:textColor="@color/white"
        android:textSize="32dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <ImageView
        android:layout_width="260dp"
        android:layout_height="400dp"
        android:layout_marginTop="60dp"
        android:src="@drawable/main_img"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.496"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView" />

    <ImageView
        android:id="@+id/btn_next"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:layout_marginTop="396dp"
        android:src="@drawable/next"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.527"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView" />

</androidx.constraintlayout.widget.ConstraintLayout>

---

//fragment_question.xml

<?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"
    android:background="@drawable/background"
    tools:context=".fragment.QuestionFragment">

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="50dp"
        android:fontFamily="sans-serif-black"
        android:text="@string/question"
        android:textColor="@color/black"
        android:gravity="center"
        android:textSize="20dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <ImageView
        android:layout_width="260dp"
        android:layout_height="400dp"
        android:layout_marginTop="4dp"
        android:src="@drawable/question_img"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.496"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView" />

    <ImageView
        android:id="@+id/btn_next"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:layout_marginTop="368dp"
        android:src="@drawable/next"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.498"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView" />

</androidx.constraintlayout.widget.ConstraintLayout>

---

//fragment_selection.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    tools:context=".fragment.SelectionFragment">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:orientation="vertical"
        android:weightSum="4"
        android:paddingStart="15dp"
        android:paddingEnd="15dp"
        app:layout_constraintBottom_toTopOf="@+id/guideline"
        app:layout_constraintTop_toTopOf="parent">

        <TextView
            android:id="@+id/option_1"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"
            android:gravity="center"
            android:text="1.Throw it away."
            android:background="@drawable/selection"
            android:layout_marginBottom="10dp"
            android:layout_marginTop="10dp"
            />
        <TextView
            android:id="@+id/option_2"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"
            android:gravity="center"
            android:text="2. Water the flowers"
            android:background="@drawable/selection"
            android:layout_marginBottom="10dp"
            />
        <TextView
            android:id="@+id/option_3"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"
            android:gravity="center"
            android:text="3. Cut it off with sissors"
            android:background="@drawable/selection"
            android:layout_marginBottom="10dp"
            />
        <TextView
            android:id="@+id/option_4"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"
            android:gravity="center"
            android:text="4. Make them as dried flower."
            android:background="@drawable/selection"
            android:layout_marginBottom="10dp"
            />

    </LinearLayout>

    <ImageView
        android:id="@+id/btn_back"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:src="@drawable/previous"
        app:layout_constraintTop_toBottomOf="@id/guideline"
        app:layout_constraintStart_toStartOf="parent"
    />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.85"/>

</androidx.constraintlayout.widget.ConstraintLayout>

---

//fragment_resutl.xml

<?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"
    android:background="@drawable/background"
    tools:context=".fragment.ResultFragment">

    <TextView
        android:id="@+id/tv_main"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="76dp"
        android:fontFamily="sans-serif-black"
        android:text="You ar a quitter"
        android:textColor="@color/white"
        android:textSize="32dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/tv_sub"
        android:layout_width="260dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:layout_marginBottom="260dp"
        android:fontFamily="sans-serif-light"
        android:text="May be you give up on love too easily..."
        android:textSize="20dp"
        app:layout_constraintBottom_toBottomOf="@+id/btn_home"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.496"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/tv_main"
        app:layout_constraintVertical_bias="1.0" />

    <ImageView
        android:id="@+id/btn_home"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:layout_marginBottom="92dp"
        android:src="@drawable/home"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.546"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_editor_absoluteY="655dp" />

</androidx.constraintlayout.widget.ConstraintLayout>

---

<nav_graph.xml>

---

[main]

//MainActivity.kt

package kr.co.lovetest

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import androidx.navigation.NavController
import androidx.navigation.findNavController

class MainActivity : AppCompatActivity() {

    lateinit var navController :NavController

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        navController = findNavController(R.id.nav_host_fragment)
    }
}

---

//MainFragment.kt
package kr.co.lovetest.fragment

import android.os.Bundle
import androidx.fragment.app.Fragment
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.navigation.NavController
import androidx.navigation.Navigation
import kotlinx.android.synthetic.main.fragment_main.*
import kr.co.lovetest.R

class MainFragment : Fragment() {

    lateinit var navController: NavController

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?,
    ): View? {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_main, container, false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        navController = Navigation.findNavController(view)
        btn_next.setOnClickListener{
            navController.navigate(R.id.action_mainFragment_to_questionFragment)
        }
    }
}

---

//QuestionFragment.kt
package kr.co.lovetest.fragment

import android.os.Bundle
import androidx.fragment.app.Fragment
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.navigation.NavController
import androidx.navigation.Navigation
import kotlinx.android.synthetic.main.fragment_main.*
import kotlinx.android.synthetic.main.fragment_main.btn_next
import kotlinx.android.synthetic.main.fragment_question.*
import kr.co.lovetest.R

class QuestionFragment : Fragment(), View.OnClickListener {

    lateinit var navController: NavController

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?,
    ): View? {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_question, container, false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        navController = Navigation.findNavController(view)
        btn_next.setOnClickListener(this)
    }

    override fun onClick(v: View?) {
        when(v?.id){
            R.id.btn_next -> {
                navController.navigate(R.id.action_questionFragment_to_selectionFragment)
            }
        }
    }
}

---

//SelectionFragment.kt

package kr.co.lovetest.fragment

import android.os.Bundle
import androidx.fragment.app.Fragment
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.core.os.bundleOf
import androidx.navigation.NavController
import androidx.navigation.Navigation
import kotlinx.android.synthetic.main.fragment_selection.*
import kr.co.lovetest.R

class SelectionFragment : Fragment(),View.OnClickListener {

    lateinit var navController: NavController

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?,
    ): View? {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_selection, container, false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        navController = Navigation.findNavController(view)
        btn_back.setOnClickListener(this)
        option_1.setOnClickListener(this)
        option_2.setOnClickListener(this)
        option_3.setOnClickListener(this)
        option_4.setOnClickListener(this)
    }

    override fun onClick(v: View?) {
        when(v?.id){
            R.id.option_1 ->{naviagteWithIndex(1)}
            R.id.option_2 ->{naviagteWithIndex(2)}
            R.id.option_3 ->{naviagteWithIndex(3)}
            R.id.option_4 ->{naviagteWithIndex(4)}
            R.id.btn_back ->{
                navController.popBackStack()
            }
        }
    }
    fun naviagteWithIndex(index : Int){
        val bundle = bundleOf("index" to index)
        navController.navigate(R.id.action_selectionFragment_to_resultFragment, bundle)
    }
}

---

//ResultFragment.kt

package kr.co.lovetest.fragment

import android.os.Bundle
import androidx.fragment.app.Fragment
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.navigation.NavController
import androidx.navigation.Navigation
import kotlinx.android.synthetic.main.fragment_result.*
import kr.co.lovetest.R

class ResultFragment : Fragment() {

    var option = -1

    lateinit var navController: NavController

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?,
    ): View? {
        // Inflate the layout for this fragment
        option = arguments?.getInt("index")?:-1
        return inflater.inflate(R.layout.fragment_result, container, false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        navController = Navigation.findNavController(view)
        setResult(option)
        btn_home.setOnClickListener{
            navController.navigate(R.id.action_resultFragment_to_mainFragment)
        }
    }

    fun setResult(option: Int) {
        when(option){
            1 -> {
                tv_main.text = "You are a QUITTER!"
                tv_sub.text = "You can let the person easily."
            }
            2 -> {
                tv_main.text = "You should focus on yourself!"
                tv_sub.text = "You become really clingy to your ex."
            }
            3 -> {
                tv_main.text = "You should take it easy!"
                tv_sub.text = "You can do crazy things no matter what it takes."
            }
            4 -> {
                tv_main.text = "You are pretty mature!"
                tv_sub.text = "You can easily accept the break-up."
            }
        }
    }
}

---

[결과 출력]

<(1)MainFragment (2)QuestionFragment (3)SelectionFragment>

 

<(4)ResultFragment>

<왼쪽 위 : 1, 오른쪽 위: 2, 왼쪽 아래: 3, 오른쪽 아래: 4>

 

---

https://www.youtube.com/watch?v=M1e2tLnzVPo&t=3s