Fresco按比例缩放图片

<com.facebook.drawee.view.SimpleDraweeView    android:id="@+id/story_image"    android:layout_width="fill_parent"    android:layout_height="wrap_content"    fresco:pressedStateOverlayImage="@color/press_over"    fresco:progressBarAutoRotateInterval="5000"    fresco:progressBarImage="@drawable/progress_icon"    fresco:progressBarImageScaleType="centerInside"    fresco:roundedCornerRadius="3dp" />

storyImgView.setAspectRatio(1.5f);