프래그먼트는 액티비티 위에 올라가는 부분화면이다.

 

 

 

 

 

 

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class MainActivity

package org.androidtown.myfragment;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

    Fragment2 fragment2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }



    public  void onFragmentChanged(int index){

        if(fragment2==null){
            fragment2=new Fragment2();
        }

        //안드로이드 메모리에서  프레그먼트를 바꿔주는 역할
        getSupportFragmentManager().beginTransaction().replace(R.id.container1, fragment2).commit();

    }



}

 

R.layout.activity_main

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

    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:id="@+id/container1"
        android:layout_weight="1">

        <fragment
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:name="org.androidtown.myfragment.Fragment1">
        </fragment>

    </FrameLayout>

    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:id="@+id/container2"
        android:layout_weight="1">

        <fragment
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:name="org.androidtown.myfragment.Fragment2">
        </fragment>

    </FrameLayout>





</LinearLayout>

 

class Fragment1

package org.androidtown.myfragment;


import android.os.Bundle;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.support.v4.app.Fragment;
/**
 * Created by choi on 2017-04-03.
 */

public class Fragment1 extends Fragment{


    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        //ViewGroup container 은 상위 레이아웃
        ViewGroup   rootView=(ViewGroup)inflater.inflate(R.layout.fragment1, container,false);

        Button button=(Button)rootView.findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //자신을 포함한 프레그먼트의 엑티비티를 가져오기 getActivity()
               // getActivity().onFragmentChanged(1); 여기서는 mainActivity 호출

                MainActivity activity=(MainActivity)getActivity();
                activity.onFragmentChanged(1);


            }
        });


        return rootView;
    }




}

 

R.layout.fragment1

<?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:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/holo_orange_dark">

    <TextView
        android:text="첫번째"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/textView"
        android:textAlignment="center"
        android:textSize="36sp" />

    <Button
        android:text="바꾸기"
        android:layout_width="398dp"
        android:layout_height="wrap_content"
        android:id="@+id/button"
        android:textAlignment="center" />

    <ImageButton
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:srcCompat="@android:drawable/ic_delete"
        android:id="@+id/imageButton" />
</LinearLayout>

 

class Fragment2

package org.androidtown.myfragment;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.support.v4.app.Fragment;
/**
 * Created by choi on 2017-04-03.
 */

public class Fragment2 extends Fragment {


    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        //ViewGroup container 은 상위 레이아웃
        ViewGroup   rootView=(ViewGroup)inflater.inflate(R.layout.fragment2, container,false);
        return rootView;
    }




}

 

R.layout.fragment2

<?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:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/holo_blue_dark">

    <TextView
        android:text="두번째"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/textView"
        android:textAlignment="center"
        android:textSize="36sp" />

    <Button
        android:text="Button"
        android:layout_width="398dp"
        android:layout_height="wrap_content"
        android:id="@+id/button"
        android:textAlignment="center" />

    <ImageButton
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:srcCompat="@android:drawable/ic_delete"
        android:id="@+id/imageButton" />
</LinearLayout>

 

 

 

 

 

36강

 

 

 

 

37강