优化

app/src/main/res/layout/item_cover.xml

@@ -1,13 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:padding="16dp"
+    android:padding="12dp"
     android:clickable="true"
     android:focusable="true"
-    tools:ignore="UnusedAttribute">
+    android:orientation="vertical">
 
     <io.legado.app.ui.widget.image.CoverImageView
         android:id="@+id/iv_cover"
@@ -16,24 +15,18 @@
         android:contentDescription="@string/img_cover"
         android:scaleType="centerCrop"
         android:transitionName="img_cover"
-        app:layout_constraintLeft_toLeftOf="parent"
-        app:layout_constraintRight_toRightOf="parent"
-        app:layout_constraintTop_toTopOf="parent"
         tools:ignore="UnusedAttribute" />
 
     <TextView
         android:id="@+id/tv_source"
-        android:layout_width="0dp"
+        android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:includeFontPadding="false"
+        android:layout_marginTop="8dp"
         android:gravity="center"
         android:singleLine="true"
         android:text="@string/book_source"
         android:textColor="@color/tv_text_default"
         android:textSize="16sp"
-        app:layout_constraintLeft_toLeftOf="@+id/iv_cover"
-        app:layout_constraintRight_toRightOf="@+id/iv_cover"
-        app:layout_constraintTop_toBottomOf="@+id/iv_cover"
         tools:ignore="RtlHardcoded,RtlSymmetry" />
 
-</androidx.constraintlayout.widget.ConstraintLayout>
+</LinearLayout>