优化

app/src/main/java/io/legado/app/ui/book/changecover/ChangeCoverDialog.kt

@@ -42,7 +42,7 @@ class ChangeCoverDialog() : BaseDialogFragment(R.layout.dialog_change_cover),
 
     override fun onStart() {
         super.onStart()
-        setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)
+        setLayout(ViewGroup.LayoutParams.MATCH_PARENT, 0.96f)
     }
 
     override fun onFragmentCreated(view: View, savedInstanceState: Bundle?) {

app/src/main/java/io/legado/app/ui/book/changesource/ChangeBookSourceDialog.kt

@@ -57,7 +57,7 @@ class ChangeBookSourceDialog() : BaseDialogFragment(R.layout.dialog_book_change_
 
     override fun onStart() {
         super.onStart()
-        setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)
+        setLayout(ViewGroup.LayoutParams.MATCH_PARENT, 0.96f)
     }
 
     override fun onFragmentCreated(view: View, savedInstanceState: Bundle?) {

app/src/main/java/io/legado/app/ui/book/changesource/ChangeChapterSourceDialog.kt

@@ -81,7 +81,7 @@ class ChangeChapterSourceDialog() : BaseDialogFragment(R.layout.dialog_chapter_c
 
     override fun onStart() {
         super.onStart()
-        setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)
+        setLayout(ViewGroup.LayoutParams.MATCH_PARENT, 0.96f)
         dialog?.setOnKeyListener(this)
     }