Doideira com recuperação de imagens

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/btnFoto1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentStart="true"
        android:layout_centerVertical="true"
        android:layout_marginStart="74dp"
        android:onClick="exibir1"
        android:text="EXIBE FOTO 1" />

    <Button
        android:id="@+id/btnFoto2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        android:layout_centerVertical="true"
        android:layout_marginEnd="64dp"
        android:onClick="exibir2"
        android:text="EXIBE FOTO 2" />

    <TextView
        android:id="@+id/txtInformacao"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        android:layout_alignParentTop="true"
        android:layout_marginEnd="93dp"
        android:layout_marginTop="188dp"
        android:text="Informação" />

    <ImageView
        android:id="@+id/imgfoto"
        android:layout_width="59dp"
        android:layout_height="54dp"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:layout_marginStart="107dp"
        android:layout_marginTop="169dp"
        app:srcCompat="@android:color/holo_blue_bright" />

</RelativeLayout>

MainActivity.java

package projetolc.usuario.app.anotherdoideira;

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

public class MainActivity extends AppCompatActivity {
    ImageView imgfoto;
    Button btnFoto1, btnFoto2;
    TextView txtInformacao;

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

        imgfoto = (ImageView) findViewById(R.id.imgfoto);
        btnFoto1 = (Button) findViewById(R.id.btnFoto1);
        btnFoto2 = (Button) findViewById(R.id.btnFoto2);
        txtInformacao = (TextView) findViewById(R.id.txtInformacao);
    }

    public void exibir1 (View v) {
        imgfoto.setImageResource(R.drawable.android1);
        txtInformacao.setText("Foto 1");
    }

    public void exibir2 (View v) {
        imgfoto.setImageResource(R.drawable.android2);
        txtInformacao.setText("Foto 2");
    }
}