Fresco按比例缩放图片

    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);