private ImageView imageView;
.
.
.
@Override
public void onPause() {
    super.onPause();
    SharedPreferences.Editor editor = getSharedPreferences("prefs", Context.MODE_PRIVATE).edit();
    editor.putFloat("x", imageView.getX());
    editor.putFloat("y", imageView.getY());
    editor.apply();
}

@Override
public void onResume() {
    super.onResume();
    SharedPreferences prefs = getSharedPreferences("prefs", Context.MODE_PRIVATE);
    PropertyValuesHolder pvhX = PropertyValuesHolder.ofFloat(TRANSLATION_X, prefs.getFloat("x",0), maxWidth);
    PropertyValuesHolder pvhY = PropertyValuesHolder.ofFloat(TRANSLATION_Y, prefs.getFloat("y",0), maxHeight);
    ObjectAnimator animator = ObjectAnimator.ofPropertyValuesHolder(imageView, pvhX, pvhY);
    animator.start();
}