优化

app/src/main/java/io/legado/app/ui/book/manga/recyclerview/MangaAdapter.kt

@@ -89,8 +89,9 @@ class MangaAdapter(private val context: Context) :
             binding.retry.setOnClickListener {
                 val item = mDiffer.currentList[layoutPosition]
                 if (item is MangaPage) {
+                    val isLastImage = item.imageCount > 0 && item.index == item.imageCount - 1
                     loadImageWithRetry(
-                        item.mImageUrl, isHorizontal, item.imageCount == 1
+                        item.mImageUrl, isHorizontal, isLastImage
                     )
                 }
             }
@@ -98,7 +99,8 @@ class MangaAdapter(private val context: Context) :
 
         fun onBind(item: MangaPage) {
             setImageColorFilter()
-            loadImageWithRetry(item.mImageUrl, isHorizontal, item.imageCount == 1)
+            val isLastImage = item.imageCount > 0 && item.index == item.imageCount - 1
+            loadImageWithRetry(item.mImageUrl, isHorizontal, isLastImage)
         }
 
         fun setImageColorFilter() {

app/src/main/java/io/legado/app/ui/book/manga/recyclerview/MangaVH.kt

@@ -34,6 +34,8 @@ open class MangaVH<VB : ViewBinding>(val binding: VB, private val context: Conte
     protected lateinit var mFlProgress: FrameLayout
     protected var mRetry: Button? = null
 
+    private val minHeight = context.resources.displayMetrics.heightPixels * 2 / 3
+
     fun initComponent(
         loading: ProgressBar,
         image: AppCompatImageView,
@@ -49,7 +51,7 @@ open class MangaVH<VB : ViewBinding>(val binding: VB, private val context: Conte
     }
 
     @SuppressLint("CheckResult")
-    fun loadImageWithRetry(imageUrl: String, isHorizontal: Boolean, singleImage: Boolean) {
+    fun loadImageWithRetry(imageUrl: String, isHorizontal: Boolean, isLastImage: Boolean) {
         mFlProgress.isVisible = true
         mLoading.isVisible = true
         mRetry?.isGone = true
@@ -92,14 +94,29 @@ open class MangaVH<VB : ViewBinding>(val binding: VB, private val context: Conte
                     mFlProgress.isGone = true
                     if (!isHorizontal) {
                         itemView.updateLayoutParams<ViewGroup.LayoutParams> {
-                            height = if (singleImage) {
+                            height = ViewGroup.LayoutParams.WRAP_CONTENT
-                                ViewGroup.LayoutParams.MATCH_PARENT
-                            } else {
-                                ViewGroup.LayoutParams.WRAP_CONTENT
-                            }
                         }
-                    } else {
                         mImage.updateLayoutParams<FrameLayout.LayoutParams> {
+                            gravity = Gravity.NO_GRAVITY
+                        }
+                        if (isLastImage) {
+                            mImage.updateLayoutParams<FrameLayout.LayoutParams> {
+                                height = ViewGroup.LayoutParams.WRAP_CONTENT
+                            }
+                            itemView.minimumHeight = minHeight
+                        } else {
+                            mImage.updateLayoutParams<FrameLayout.LayoutParams> {
+                                height = ViewGroup.LayoutParams.MATCH_PARENT
+                            }
+                            itemView.minimumHeight = 0
+                        }
+                        mImage.scaleType = ImageView.ScaleType.FIT_XY
+                    } else {
+                        itemView.updateLayoutParams<ViewGroup.LayoutParams> {
+                            height = ViewGroup.LayoutParams.MATCH_PARENT
+                        }
+                        mImage.updateLayoutParams<FrameLayout.LayoutParams> {
+                            height = ViewGroup.LayoutParams.MATCH_PARENT
                             gravity = Gravity.CENTER
                         }
                         mImage.scaleType = ImageView.ScaleType.FIT_CENTER