액티비티(activity) -

Activity_main.xml

 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:id="@+id/LinearLayout1"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context=".MainActivity1" >

 

    <TextView

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="Activity 1" />

 

    <Button

        android:id="@+id/btn1"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="2번 액티비티" />

   

    <Button

        android:id="@+id/btn3"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="3번 액티비티" />

 

</LinearLayout>

 

 

MainActivity.java

 

package com.example.activityex02;

 

import android.os.Bundle;

 

import android.app.Activity;

import android.content.Intent;

import android.view.Menu;

import android.view.View;

 

public class MainActivity1 extends Activity {

 

     // 1. xml 파일 생성

     // 2. java 파일 생성

     // 3. AndroidManifest 파일에 등록 (*)

     // 4. java 파일에서 연결구문 코딩

 

     @Override

     protected void onCreate(Bundle savedInstanceState) {

           super.onCreate(savedInstanceState);

           setContentView(R.layout.activity_main1);

 

           findViewById(R.id.btn1).setOnClickListener(new View.OnClickListener() {

 

                @Override

                public void onClick(View v) {

                     // TODO Auto-generated method stub

                     Intent intent = new Intent(MainActivity1.this, MainActivity2.class);

                     startActivity(intent);

                }

           });

 

           findViewById(R.id.btn3).setOnClickListener(new View.OnClickListener() {

 

                @Override

                public void onClick(View v) {

                     // TODO Auto-generated method stub

                     Intent intent = new Intent(MainActivity1.this, MainActivity3.class);

                     startActivity(intent);

                }

           });

     }

 

     @Override

     public boolean onCreateOptionsMenu(Menu menu) {

           // Inflate the menu; this adds items to the action bar if it is present.

           getMenuInflater().inflate(R.menu.main, menu);

           return true;

     }

 

}

 

Activity_main.xml

 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:id="@+id/LinearLayout1"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context=".MainActivity1" >

 

    <TextView

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="Activity 2" />

 

    <Button

        android:id="@+id/btn2"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="액티비티 종료" />

 

</LinearLayout>

 

MainActivity.java

 

package com.example.activityex02;

 

import android.os.Bundle;

 

import android.app.Activity;

import android.content.Intent;

import android.view.Menu;

import android.view.View;

 

public class MainActivity2 extends Activity {

 

     @Override

     protected void onCreate(Bundle savedInstanceState) {

           super.onCreate(savedInstanceState);

           setContentView(R.layout.activity_main2);

 

           findViewById(R.id.btn2).setOnClickListener(new View.OnClickListener() {

 

                @Override

                public void onClick(View v) {

                     // TODO Auto-generated method stub

 

                     finish();

                }

           });

     }

 

     @Override

     public boolean onCreateOptionsMenu(Menu menu) {

           // Inflate the menu; this adds items to the action bar if it is present.

           getMenuInflater().inflate(R.menu.main, menu);

           return true;

     }

 

}

 

Activity_main.xml

 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:id="@+id/LinearLayout1"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context=".MainActivity3" >

 

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Activity3" />

   

    <Button

        android:id="@+id/btn4"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="액티비티 종료" />

 

</LinearLayout>

 

 

 

MainActivity.java

 

package com.example.activityex02;

 

import android.os.Bundle;

 

import android.app.Activity;

import android.view.Menu;

import android.view.View;

 

public class MainActivity3 extends Activity {

 

     @Override

     protected void onCreate(Bundle savedInstanceState) {

           super.onCreate(savedInstanceState);

           setContentView(R.layout.activity_main3);

          

           findViewById(R.id.btn4).setOnClickListener(new View.OnClickListener() {

 

                @Override

                public void onClick(View v) {

                     // TODO Auto-generated method stub

 

                     finish();

                }

           });

     }

 

     @Override

     public boolean onCreateOptionsMenu(Menu menu) {

           // Inflate the menu; this adds items to the action bar if it is present.

           getMenuInflater().inflate(R.menu.main_activity3, menu);

           return true;

     }

 

}