优化

app/src/main/java/io/legado/app/ui/config/ConfigActivity.kt

@@ -22,11 +22,20 @@ class ConfigActivity : BaseActivity<ConfigViewModel>() {
         when (viewModel.configType) {
             ConfigViewModel.TYPE_CONFIG -> {
                 title_bar.title = "设置"
-                supportFragmentManager.beginTransaction().replace(R.id.configFrameLayout, ConfigFragment()).commit()
+                supportFragmentManager.beginTransaction()
+                    .replace(R.id.configFrameLayout, ConfigFragment())
+                    .commit()
             }
             ConfigViewModel.TYPE_THEME_CONFIG -> {
                 title_bar.title = "主题设置"
-                supportFragmentManager.beginTransaction().replace(R.id.configFrameLayout, ThemeConfigFragment())
+                supportFragmentManager.beginTransaction()
+                    .replace(R.id.configFrameLayout, ThemeConfigFragment())
+                    .commit()
+            }
+            ConfigViewModel.TYPE_WEBDAV_CONFIG -> {
+                title_bar.title = "WebDav设置"
+                supportFragmentManager.beginTransaction()
+                    .replace(R.id.configFrameLayout, WebDavConfigFragment())
                     .commit()
             }
         }

app/src/main/java/io/legado/app/ui/config/ConfigViewModel.kt

@@ -7,6 +7,7 @@ class ConfigViewModel(application: Application) : AndroidViewModel(application)
     companion object {
         val TYPE_CONFIG = 0
         val TYPE_THEME_CONFIG = 1
+        val TYPE_WEBDAV_CONFIG = 2
     }
 
     var configType: Int = TYPE_CONFIG

app/src/main/java/io/legado/app/ui/config/WebDavConfigFragment.kt

@@ -0,0 +1,13 @@
+package io.legado.app.ui.config
+
+import android.os.Bundle
+import androidx.preference.PreferenceFragmentCompat
+import io.legado.app.R
+
+class WebDavConfigFragment : PreferenceFragmentCompat() {
+
+    override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
+        addPreferencesFromResource(R.xml.pref_config_web_dav)
+    }
+
+}

app/src/main/java/io/legado/app/ui/main/myconfig/PreferenceFragment.kt

@@ -38,13 +38,18 @@ class PreferenceFragment : PreferenceFragmentCompat(), SharedPreferences.OnShare
         preference?.let {
             when (preference.key) {
                 "setting" -> {
+                    requireContext().startActivity<ConfigActivity>(
+                        Pair("configType", ConfigViewModel.TYPE_CONFIG)
+                    )
                 }
-                "theme_setting" -> {
+                "web_dav_setting" -> {
                     requireContext().startActivity<ConfigActivity>(
-                        Pair(
-                            "configType",
-                            ConfigViewModel.TYPE_THEME_CONFIG
+                        Pair("configType", ConfigViewModel.TYPE_WEBDAV_CONFIG)
                     )
+                }
+                "theme_setting" -> {
+                    requireContext().startActivity<ConfigActivity>(
+                        Pair("configType", ConfigViewModel.TYPE_THEME_CONFIG)
                     )
                 }
             }

app/src/main/res/xml/pref_config_web_dav.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.preference.PreferenceScreen
+        xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <androidx.preference.EditTextPreference
+        android:key="web_dav_url"
+        android:title="WebDav 服务器地址"
+        android:summary="输入你的服务器地址"
+        android:singleLine="true"/>
+
+    <androidx.preference.EditTextPreference
+        android:key="web_dav_account"
+        android:title="WebDav 账号"
+        android:summary="输入你的WebDav账号"
+        android:singleLine="true"/>
+
+    <androidx.preference.EditTextPreference
+        android:key="web_dav_password"
+        android:title="WebDav 密码"
+        android:summary="输入你的WebDav授权密码"
+        android:singleLine="true"
+        android:password="true" />
+
+    <androidx.preference.Preference
+        android:key="web_dav_restore"
+        android:title="恢复"
+        android:summary="从WebDav恢复"/>
+
+</androidx.preference.PreferenceScreen>

app/src/main/res/xml/pref_main.xml

@@ -9,6 +9,12 @@
             android:summary="与功能相关的一些设置"
             app:iconSpaceReserved="false"/>
 
+    <androidx.preference.Preference
+            android:key="web_dav_setting"
+            android:title="云备份设置"
+            android:summary="通过WebDav云备份"
+            app:iconSpaceReserved="false"/>
+
     <androidx.preference.Preference
             android:key="theme_setting"
             android:title="主题设置"