Android (액티비티와 인텐트, 인텐트 프로젝트 + 레이팅바, 명화 프로젝트)

1. 액티비티와 인텐트 - 프로젝트

package kr.jeongmo.a0503_project

import android.content.Context
import android.content.Intent
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.os.Environment
import android.widget.Button
import androidx.core.app.ActivityCompat
import java.util.*

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val btnNewActivity = findViewById<Button>(R.id.btnNewActivity)
        btnNewActivity.setOnClickListener {
            val intent = Intent(applicationContext, SecondActivity::class.java)
            startActivity(intent)
        }

    }
}

package kr.jeongmo.a0503_project

import android.os.Bundle
import android.widget.Button
import androidx.appcompat.app.AppCompatActivity

class SecondActivity: AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.second)

        val btnReturn: Button = findViewById<Button>(R.id.btnReturn)
        btnReturn.setOnClickListener {
            finish()
        }
    }
}

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

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/btnNewActivity"
        android:text="새화면 열기"/>

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:background="#00ff00"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <Button
        android:id="@+id/btnReturn"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="돌아가기"/>

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="kr.jeongmo.a0503_project">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.0503_project">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".SecondActivity"/>
    </application>

</manifest>

 

2. 인텐트 프로젝트, 레이팅바

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:orientation="vertical" >

    <RatingBar
        android:id="@+id/ratingBar1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <RatingBar
        android:id="@+id/ratingBar2"
        style="?android:attr/ratingBarStyleSmall"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:numStars="10"
        android:stepSize="1" />

    <RatingBar
        android:id="@+id/ratingBar3"
        style="?android:attr/ratingBarStyleIndicator"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:rating="1.5" />

    <Button
        android:id="@+id/btnIncrease"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="증가시키기" />

    <Button
        android:id="@+id/btnDecrease"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="감소시키기" />

</LinearLayout>

package kr.jeongmo.a0503_intent_projcet

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Button
import android.widget.RatingBar

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val ratingBar1 = findViewById<RatingBar>(R.id.ratingBar1)
        val ratingBar2 = findViewById<RatingBar>(R.id.ratingBar2)
        val ratingBar3 = findViewById<RatingBar>(R.id.ratingBar3)
        val btnIncrease = findViewById<Button>(R.id.btnIncrease)
        val btnDecrease = findViewById<Button>(R.id.btnDecrease)

        btnIncrease.setOnClickListener {
            ratingBar1.rating = ratingBar1.rating + ratingBar1.stepSize
            ratingBar2.rating = ratingBar2.rating + ratingBar2.stepSize
            ratingBar3.rating = ratingBar3.rating + ratingBar3.stepSize
        }

        btnDecrease.setOnClickListener {
            ratingBar1.rating = ratingBar1.rating - ratingBar1.stepSize
            ratingBar2.rating = ratingBar2.rating - ratingBar2.stepSize
            ratingBar3.rating = ratingBar3.rating - ratingBar3.stepSize
        }


    }
}

 

3. 명화 프로젝트

 - 사진 파일 9장 drawable에 추가

package kr.jeongmo.a0503_intent_projcet

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Button
import android.widget.ImageView
import android.widget.RatingBar
import android.widget.Toast

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        title = "명화 선호도 투표"

        // 투표수를 저장할 배열
        val voteCounts = IntArray(9)

        // 이미지 버튼 객체 배열
        val images = arrayOfNulls<ImageView>(9)

        // 이미지 버튼 Id 배열
        val imageIds = arrayOf(
            R.id.imageView1, R.id.imageView2, R.id.imageView3,
            R.id.imageView4, R.id.imageView5, R.id.imageView6,
            R.id.imageView7, R.id.imageView8, R.id.imageView9
        )

        // 이미지 이름 문자열 배열
        val imageNames = arrayOf(
            "독서하는 소녀", "꽃장식 모자 소녀", "부채를 든 소녀",
            "이레느깡 단 베르양", "잠자는 소녀", "테라스의 두 자매",
            "피아노 레슨", "피아노 앞의 소녀들", "해변에서"
        )

        for (i in imageIds.indices) {
            images[i] = findViewById(imageIds[i])
            images[i]!!.setOnClickListener {
                voteCounts[i]++
                Toast.makeText(applicationContext, "${imageNames[i]} : 총 ${voteCounts[i]} 표", Toast.LENGTH_SHORT).show()
            }
        }

 

package kr.jeongmo.a0503_intent_projcet

import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity

class ResultActivity:AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.result)
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="3">

        <ImageView
            android:id="@+id/imageView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:src="@drawable/pic1"/>
        <ImageView
            android:id="@+id/imageView2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:src="@drawable/pic2"/>
        <ImageView
            android:id="@+id/imageView3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:src="@drawable/pic3"/>
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="3">

        <ImageView
            android:id="@+id/imageView4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:src="@drawable/pic4"/>
        <ImageView
            android:id="@+id/imageView5"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:src="@drawable/pic5"/>
        <ImageView
            android:id="@+id/imageView6"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:src="@drawable/pic6"/>
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="3">

        <ImageView
            android:id="@+id/imageView7"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:src="@drawable/pic7"/>
        <ImageView
            android:id="@+id/imageView8"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:src="@drawable/pic8"/>
        <ImageView
            android:id="@+id/imageView9"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:src="@drawable/pic9"/>
    </LinearLayout>


    <Button
        android:id="@+id/btnResult"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="투표종료"
        />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center_vertical"
    android:stretchColumns="0">

    <TableRow>
        <TextView android:id="@+id/textView1"
            android:layout_gravity="center_vertical"
            android:text="그림1"
            android:textSize="15dp" />
        <RatingBar
            android:id="@+id/ratingBar1"
            style="?android:attr/ratingBarStyleIndicator"
            android:layout_gravity="right" />
    </TableRow>
    <TableRow>
        <TextView android:id="@+id/textView2"
            android:layout_gravity="center_vertical"
            android:text="그림2"
            android:textSize="15dp" />
        <RatingBar
            android:id="@+id/ratingBar2"
            style="?android:attr/ratingBarStyleIndicator"
            android:layout_gravity="right" />
    </TableRow>
    <TableRow>
        <TextView android:id="@+id/textView3"
            android:layout_gravity="center_vertical"
            android:text="그림3"
            android:textSize="15dp" />
        <RatingBar
            android:id="@+id/ratingBar3"
            style="?android:attr/ratingBarStyleIndicator"
            android:layout_gravity="right" />
    </TableRow>
    <TableRow>
        <TextView android:id="@+id/textView4"
            android:layout_gravity="center_vertical"
            android:text="그림4"
            android:textSize="15dp" />
        <RatingBar
            android:id="@+id/ratingBar4"
            style="?android:attr/ratingBarStyleIndicator"
            android:layout_gravity="right" />
    </TableRow>
    <TableRow>
        <TextView android:id="@+id/textView5"
            android:layout_gravity="center_vertical"
            android:text="그림5"
            android:textSize="15dp" />
        <RatingBar
            android:id="@+id/ratingBar5"
            style="?android:attr/ratingBarStyleIndicator"
            android:layout_gravity="right" />
    </TableRow>
    <TableRow>
        <TextView android:id="@+id/textView6"
            android:layout_gravity="center_vertical"
            android:text="그림6"
            android:textSize="15dp" />
        <RatingBar
            android:id="@+id/ratingBar6"
            style="?android:attr/ratingBarStyleIndicator"
            android:layout_gravity="right" />
    </TableRow>
    <TableRow>
        <TextView android:id="@+id/textView7"
            android:layout_gravity="center_vertical"
            android:text="그림7"
            android:textSize="15dp" />
        <RatingBar
            android:id="@+id/ratingBar7"
            style="?android:attr/ratingBarStyleIndicator"
            android:layout_gravity="right" />
    </TableRow>
    <TableRow>
        <TextView android:id="@+id/textView8"
            android:layout_gravity="center_vertical"
            android:text="그림8"
            android:textSize="15dp" />
        <RatingBar
            android:id="@+id/ratingBar8"
            style="?android:attr/ratingBarStyleIndicator"
            android:layout_gravity="right" />
    </TableRow>
    <TableRow>
        <TextView android:id="@+id/textView9"
            android:layout_gravity="center_vertical"
            android:text="그림9"
            android:textSize="15dp" />
        <RatingBar
            android:id="@+id/ratingBar9"
            style="?android:attr/ratingBarStyleIndicator"
            android:layout_gravity="right" />
    </TableRow>
    <TableRow>
        <Button android:id="@+id/btnReturn"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_span="2"
            android:text="돌아가기" />
    </TableRow>
</TableLayout>

 

---

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