Glide获取图片原始宽高并展示

场景需求：希望以图片的原始宽高比进行缩放，实现即使在缩略图情况下，也能看到全图。且多张图片可水平滑动。

代码：

 //处理图片
    private void dealWithPhoto() {
        //移除布局中已存在的视图
        llPhoto.removeAllViews();
        for (int i = 0; i < photos.size(); i++) {
            final String item = photos.get(i);
            final View view = inflater.inflate(R.layout.item_order_detail_img, null, false);
            final RoundedImageView rivPhoto = ViewFindUtils.find(view, R.id.rivPhoto);

            final ObjectAnimator anim = ObjectAnimator.ofInt(rivPhoto, "ImageLevel", 0);
            anim.setDuration(800);
            anim.setRepeatCount(ObjectAnimator.INFINITE);
            anim.start();
            Glide.with(this).asBitmap().load(item).apply(options)
                    .listener(new RequestListener<Bitmap>() {
                        @Override
                        public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Bitmap> target, boolean isFirstResource) {
                            anim.cancel();
                            return false;
                        }

                        @Override
                        public boolean onResourceReady(Bitmap resource, Object model, Target<Bitmap> target, DataSource dataSource, boolean isFirstResource) {
                            anim.cancel();
                            return false;
                        }
                    })
                    .into(new SimpleTarget<Bitmap>() {
                        @Override
                        public void onResourceReady(@NonNull Bitmap resource, @Nullable Transition<? super Bitmap> transition) {
                            int width = resource.getWidth();//图片原始宽度
                            int height = resource.getHeight();//图片原始高度
                            int scaledH = UiUtils.dip2px(180f);//固定图片展示高度为180dp
                            int scaledW = (width * scaledH) / height;//计算出按比缩放后的宽度
                            LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(scaledW, scaledH);
                            lp.setMargins(UiUtils.dip2px(5f), 0, UiUtils.dip2px(5f), 0);
                            rivPhoto.setLayoutParams(lp);
                            rivPhoto.setImageBitmap(resource);
                        }
                    });

            view.setTag(R.string.position, i);
            view.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    int position = (int) view.getTag(R.string.position);
                    previewPhoto(position);
                }
            });

            llPhoto.addView(view);
        }
    }

布局文件item_order_detail_img.xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/dialog_preview_view"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >
    <com.makeramen.roundedimageview.RoundedImageView
        android:id="@+id/rivPhoto"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        app:riv_corner_radius="10dp"
        android:layout_gravity="center"
        android:scaleType="fitCenter"/>
</LinearLayout>

父布局局部布局代码：

运行效果：