이미지버튼에 스피너를 적용하는 방법

Question

package com.example.Cashplay.GNBActivityPackage;

import android.app.ActionBar;
import android.app.Activity;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageButton;
import android.widget.Spinner;

import com.example.Cashplay.R;

public class Saved_Money_Activity extends Activity implements View.OnClickListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_saved_money);
        customActionBar();
        final Spinner s = (Spinner) findViewById(R.id.spinner3);
        

        ArrayAdapter adapter = ArrayAdapter.createFromResource(
                this, R.array.GameType_savedMoney, android.R.layout.simple_spinner_item);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        s.setAdapter(adapter);
        ImageButton imgbutton = (ImageButton)findViewById(R.id.arrow);
        imgbutton.setOnClickListener(this);
    }

    public void onClick(View v) {
        if (v.getId() == R.id.arrow) {
        }

    }
    public void OnClick(View imgbutton)
    {
        imgbutton.setRotationX(180);
    }
    ////////////////////////////////////////
    public void onClick_Back(View v) {
        finish();
    }

    private void customActionBar() {
        ActionBar actionBar = getActionBar();
        actionBar.setBackgroundDrawable(new ColorDrawable(Color.argb(255, 255, 255, 255)));
        actionBar.setDisplayShowHomeEnabled(false);
        actionBar.setDisplayShowTitleEnabled(false);
        actionBar.setDisplayShowCustomEnabled(true);

        ActionBar.LayoutParams layout = new ActionBar.LayoutParams(ActionBar.LayoutParams.FILL_PARENT,
                ActionBar.LayoutParams.FILL_PARENT);
        ViewGroup actionBarLayout = (ViewGroup) getLayoutInflater().inflate(R.layout.actionbar_savedmoney, null);
        actionBar.setCustomView(actionBarLayout, layout);
    }
}

/////////////////////////////////

xml 전체는 아니고 일부분만

 

</LinearLayout>
<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/game_ad"
    android:layout_below="@+id/exposure_ad"
    android:background="@drawable/border_thin"
    android:padding="10dp">
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="게임형 적립금"
        android:paddingLeft="20dp"
        android:paddingTop="15dp"
        android:paddingBottom="15dp"
        android:textStyle="bold"
        android:id="@+id/textView5" />
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingLeft="10dp"
        android:paddingTop="15dp"
        android:paddingBottom="15dp"
        android:text="N"
        android:id="@+id/Value3"
        android:layout_centerVertical="true"
        android:layout_toEndOf="@+id/textView5" />
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="원"
        android:paddingTop="15dp"
        android:paddingBottom="15dp"
        android:layout_alignTop="@+id/Value3"
        android:layout_toEndOf="@+id/Value3" />
    <ImageButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/down_btn"
        android:layout_centerVertical="true"
        android:layout_alignParentEnd="true"
        android:id="@+id/arrow"/>
    <Spinner
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:spinnerMode="dropdown"
        android:id="@+id/spinner3">

    </Spinner>

</RelativeLayout>

이미지버튼(화살표)를 클릭해서 value에 있는 값들이 드롭다운으로 보여지게 하는 형식을 만들고 싶습니다

지금은 스피너 자체가 튀어나와 있는데 이미지버튼 안에 넣으려면 어떻게 해야하나요