안드로이드 스튜디오 <사진 위아래로 이동 및 사진 스크롤>

ActivityMain.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:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    >

    <HorizontalScrollView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_weight="5">

        <ScrollView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content">

            <ImageView
                android:id="@+id/up"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/friends"
                android:visibility="visible" />
        </ScrollView>
    </HorizontalScrollView>

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_gravity="center"

        >
        <Button
            android:id="@+id/upBut"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="UP"
            android:onClick="UP"/>
        <Button
            android:id="@+id/downBut"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="DOWN"
            android:onClick="DOWN"/>

    </LinearLayout>

    <HorizontalScrollView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_weight="5">

        <ScrollView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content">

            <ImageView
                android:id="@+id/down"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/friends"
                android:visibility="invisible" />
        </ScrollView>
    </HorizontalScrollView>

</LinearLayout>

MainActivity.java

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;

public class MainActivity extends AppCompatActivity {
    ImageView up;
    ImageView down;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        up = (ImageView) findViewById(R.id.up);
        down = (ImageView) findViewById(R.id.down);
    }



    public void UP(View  v){
        upimage();
    }
    public  void DOWN(View v){
        downimage();
    }

    private void upimage(){
        up.setVisibility(View.VISIBLE);
        down.setVisibility(View.INVISIBLE);

    }
    private  void downimage(){
        up.setVisibility(View.INVISIBLE);
        down.setVisibility(View.VISIBLE);
    }
}

실행화면

 

기본 화면

 

down 버튼 누르면

up 버튼 누르면