[안드로이드 스튜디오] 여러 페이지로 구성된 애플리케이션 작성

activity_main.xml

<?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"
    tools:context=".MainActivity"
    android:background="@drawable/soccer">


    <androidx.appcompat.widget.AppCompatButton
    android:id="@+id/button1"
    android:background="#F44336"
    android:layout_width="300dp"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:layout_marginTop="100dp"
    android:text="INTRODUCTION"
    android:textSize="20dp"
    android:textStyle="bold"
    android:layout_marginBottom="5dp"    />

    <androidx.appcompat.widget.AppCompatButton
        android:id="@+id/button2"
        android:layout_width="300dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:background="#F44336"
        android:text="SETTINGS"
        android:textSize="20dp"
        android:textStyle="bold"
        android:layout_marginBottom="5dp"
        />

    <androidx.appcompat.widget.AppCompatButton
        android:id="@+id/button3"
        android:layout_width="300dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:text="START"
        android:textSize="20dp"
        android:textStyle="bold"
        android:background="#F44336"/>

</LinearLayout>

MainActivity.java

package com.example.myapplication;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import androidx.activity.EdgeToEdge;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.graphics.Insets;
import androidx.core.view.ViewCompat;
import androidx.core.view.WindowInsetsCompat;

public class MainActivity extends AppCompatActivity {
    Button button1, button2, button3;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        button1 = (Button) findViewById(R.id.button1);
        button2 = (Button) findViewById(R.id.button2);
        button3 = (Button) findViewById(R.id.button3);

       button1.setOnClickListener(new View.OnClickListener(){
           @Override
           public void onClick(View view) {
               Intent intent = new Intent(MainActivity.this, Introduction.class);
               startActivity(intent);
           }
       });

        button2.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(MainActivity.this, Settings.class);
                startActivity(intent);
            }
        });

        button3.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(MainActivity.this, Start.class);
                startActivity(intent);
            }
        });
    }


}

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introduction.xml

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


    <TextView
        android:id="@+id/textView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="손흥민은 대한민국 레전드이다."
        android:textSize="30dp"
        android:textColor="@color/white"/>

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="home"
        android:layout_marginTop="500dp"
        android:layout_gravity="center_horizontal"/>

</LinearLayout>

settings.xml

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


    <EditText
        android:id="@+id/editTextText"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:ems="10"
        android:inputType="text"
        android:text="Difficulties" />

    <EditText
        android:id="@+id/editTextText2"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:ems="10"
        android:inputType="text"
        android:text="Players" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="home"
        android:layout_marginTop="400dp"
        android:layout_gravity="center_horizontal"/>
</LinearLayout>

start.xml

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

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="home"
        android:layout_marginTop="500dp"
        android:layout_gravity="center_horizontal"/>

</LinearLayout>

---

JAVA

package com.example.myapplication;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import androidx.appcompat.app.AppCompatActivity;

public class Settings extends AppCompatActivity {
    Button button1;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // 메인을 제외한 나머지는 버튼마다 XML 제목에 맞는걸로 바꿔주면됩니다.
        setContentView(R.layout.settings); 

        button1 = (Button) findViewById(R.id.button1);

        button1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                finish();
            }
        });
    }
}

---

AndroidManifest.xml

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

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.MyApplication"
        tools:targetApi="31">
        <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>
        // 자바 클래스명 넣으면 됨
        <activity android:name=".Introduction" android:label="Introduction"></activity>
        <activity android:name=".Settings" android:label="Settings"></activity>
        <activity android:name=".Start" android:label="Start"></activity>
    </application>

</manifest>

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버튼을 클릭하면 다른 xml 화면이 뜬다.

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