优化

app/src/main/java/io/legado/app/ui/book/bookmark/BookmarkDialog.kt

@@ -29,10 +29,13 @@ class BookmarkDialog() : BaseDialogFragment(R.layout.dialog_bookmark) {
 
     override fun onStart() {
         super.onStart()
-        setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)
+        setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)
+        dialog?.window?.setBackgroundDrawableResource(R.color.transparent)
     }
 
     override fun onFragmentCreated(view: View, savedInstanceState: Bundle?) {
+        view.setBackgroundResource(R.color.transparent)
+        view.setOnClickListener { dismiss() }
         binding.toolBar.setBackgroundColor(primaryColor)
         val arguments = arguments ?: let {
             dismiss()

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

@@ -1,10 +1,19 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:padding="16dp">
+
+    <LinearLayout
+        android:id="@+id/vw_bg"
+        android:layout_width="match_parent"
         android:layout_height="wrap_content"
-    android:orientation="vertical">
+        android:layout_gravity="center"
+        android:background="@drawable/shape_card_view"
+        android:orientation="vertical"
+        tools:ignore="UselessParent">
 
         <androidx.appcompat.widget.Toolbar
             android:id="@+id/tool_bar"
@@ -107,4 +116,5 @@
             </LinearLayout>
 
         </com.google.android.flexbox.FlexboxLayout>
-</LinearLayout>
+    </LinearLayout>
+</FrameLayout>