Merge pull request #118 from hingbong/master

选择字体文件夹弹出框用协程处理

app/src/main/java/io/legado/app/help/storage/Backup.kt

@@ -102,7 +102,7 @@ object Backup {
                 if (file.exists()) {
                     treeDoc.findFile(fileName)?.delete()
                     treeDoc.createFile("", fileName)?.let {
-                        DocumentUtils.writeText(context, file.readText(), it.uri)
+                        DocumentUtils.writeBytes(context, file.readBytes(), it.uri)
                     }
                 }
             }

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

@@ -109,6 +109,7 @@ class FontSelectDialog : BaseDialogFragment(),
     }
 
     private fun openFolder() {
+        launch(Main) {
             alert {
                 titleResource = R.string.select_folder
                 items(resources.getStringArray(R.array.select_folder).toList()) { _, index ->
@@ -145,6 +146,7 @@ class FontSelectDialog : BaseDialogFragment(),
                 }
             }.show()
         }
+    }
 
     @SuppressLint("DefaultLocale")
     private fun getFontFiles(doc: DocumentFile) {