feat: 优化代码

app/src/main/java/io/legado/app/ui/widget/font/FontSelectDialog.kt

@@ -71,12 +71,16 @@ class FontSelectDialog : BaseDialogFragment(),
         if (fontPath.isNullOrEmpty()) {
             openFolder()
         } else {
+            if (fontPath.isContentPath()) {
                 val doc = DocumentFile.fromTreeUri(requireContext(), Uri.parse(fontPath))
                 if (doc?.canRead() == true) {
                     getFontFiles(doc)
                 } else {
                     openFolder()
                 }
+            } else {
+                getFontFilesByPermission(fontPath)
+            }
         }
     }