Send  Imageview In this method:

private void loadPhoto(ImageView imageView) {
        ImageView tempImageView = imageView;
        final Dialog dialog = new Dialog(this);
        dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
        dialog.setContentView(R.layout.custom_fullimage_dialog);
        ImageView image = (ImageView) dialog.findViewById(R.id.fullimage);
        image.setImageDrawable(tempImageView.getDrawable());
        dialog.show();
        dialog.setCanceledOnTouchOutside(true);
    }

And Create  custom_fullimage_dialog.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/layout_root"
    android:layout_width="300dp"
    android:layout_height="300dp"
    android:layout_gravity="center"
    android:background="#c0c0c0"
    android:orientation="vertical"
    android:padding="0dp" >

    <ImageView
        android:id="@+id/fullimage"
        android:layout_width="300dp"
        android:layout_height="300dp"
        android:layout_gravity="center"
        android:background="@drawable/imagebackground"
        android:scaleType="fitXY"
        android:src="@drawable/s1" >
    </ImageView>

</LinearLayout>