优化

app/src/main/java/io/legado/app/base/AppContextWrapper.kt

@@ -6,6 +6,7 @@ import android.content.res.Resources
 import android.os.Build
 import android.os.LocaleList
 import io.legado.app.constant.PreferKey
+import io.legado.app.utils.getPrefInt
 import io.legado.app.utils.getPrefString
 import java.util.*
 
@@ -13,13 +14,17 @@ import java.util.*
 object AppContextWrapper {
 
     fun wrap(context: Context): Context {
+        var fontScale = context.getPrefInt(PreferKey.fontScale) / 10f
+        if (fontScale !in 1f..2f) {
+            fontScale = Configuration().fontScale
+        }
         return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
             val resources: Resources = context.resources
             val configuration: Configuration = resources.configuration
             val targetLocale = getSetLocale(context)
             configuration.setLocale(targetLocale)
             configuration.setLocales(LocaleList(targetLocale))
-            configuration.fontScale = 1f
+            configuration.fontScale = fontScale
             context.createConfigurationContext(configuration)
         } else {
             val resources: Resources = context.resources
@@ -27,7 +32,7 @@ object AppContextWrapper {
             val configuration: Configuration = resources.configuration
             @Suppress("DEPRECATION")
             configuration.locale = targetLocale
-            configuration.fontScale = 1f
+            configuration.fontScale = fontScale
             @Suppress("DEPRECATION")
             resources.updateConfiguration(configuration, resources.displayMetrics)
             context

app/src/main/java/io/legado/app/constant/PreferKey.kt

@@ -2,6 +2,7 @@ package io.legado.app.constant
 
 object PreferKey {
     const val language = "language"
+    const val fontScale = "fontScale"
     const val themeMode = "themeMode"
     const val userAgent = "userAgent"
     const val showUnread = "showUnread"

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

@@ -56,6 +56,7 @@ class ThemeConfigFragment : BasePreferenceFragment(),
         upPreferenceSummary(PreferKey.bgImage, getPrefString(PreferKey.bgImage))
         upPreferenceSummary(PreferKey.bgImageN, getPrefString(PreferKey.bgImageN))
         upPreferenceSummary(PreferKey.barElevation, AppConfig.elevation.toString())
+        upPreferenceSummary(PreferKey.fontScale)
         findPreference<ColorPreference>(PreferKey.cBackground)?.let {
             it.onSaveColor = { color ->
                 if (!ColorUtils.isColorLight(color)) {
@@ -152,6 +153,18 @@ class ThemeConfigFragment : BasePreferenceFragment(),
                     AppConfig.elevation = it
                     recreateActivities()
                 }
+            PreferKey.fontScale -> NumberPickerDialog(requireContext())
+                .setTitle(getString(R.string.font_scale))
+                .setMaxValue(20)
+                .setMinValue(10)
+                .setCustomButton((R.string.btn_default_s)) {
+                    putPrefInt(PreferKey.fontScale, 0)
+                    recreateActivities()
+                }
+                .show {
+                    putPrefInt(PreferKey.fontScale, it)
+                    recreateActivities()
+                }
             PreferKey.bgImage -> selectBgAction(false)
             PreferKey.bgImageN -> selectBgAction(true)
             "themeList" -> ThemeListDialog().show(childFragmentManager, "themeList")
@@ -257,11 +270,18 @@ class ThemeConfigFragment : BasePreferenceFragment(),
         postEvent(EventBus.RECREATE, "")
     }
 
-    private fun upPreferenceSummary(preferenceKey: String, value: String?) {
+    private fun upPreferenceSummary(preferenceKey: String, value: String? = null) {
         val preference = findPreference<Preference>(preferenceKey) ?: return
         when (preferenceKey) {
             PreferKey.barElevation -> preference.summary =
                 getString(R.string.bar_elevation_s, value)
+            PreferKey.fontScale -> {
+                var fontScale = getPrefInt(PreferKey.fontScale) / 10f
+                if (fontScale !in 1f..2f) {
+                    fontScale = resources.configuration.fontScale
+                }
+                preference.summary = getString(R.string.font_scale_summary, fontScale)
+            }
             PreferKey.bgImage,
             PreferKey.bgImageN -> preference.summary = if (value.isNullOrBlank()) {
                 getString(R.string.select_image)

app/src/main/res/values-es-rES/strings.xml

@@ -900,5 +900,7 @@
     <string name="del_login_header">删除登录头</string>
     <string name="show_login_header">查看登录头</string>
     <string name="login_header">登录头</string>
+    <string name="font_scale">字体大小</string>
+    <string name="font_scale_summary">当前字体大小:%.1f</string>
 
 </resources>

app/src/main/res/values-ja-rJP/strings.xml

@@ -904,5 +904,7 @@
     <string name="del_login_header">删除登录头</string>
     <string name="show_login_header">查看登录头</string>
     <string name="login_header">登录头</string>
+    <string name="font_scale">字体大小</string>
+    <string name="font_scale_summary">当前字体大小:%.1f</string>
 
 </resources>

app/src/main/res/values-pt-rBR/strings.xml

@@ -904,5 +904,7 @@
     <string name="del_login_header">删除登录头</string>
     <string name="show_login_header">查看登录头</string>
     <string name="login_header">登录头</string>
+    <string name="font_scale">字体大小</string>
+    <string name="font_scale_summary">当前字体大小:%.1f</string>
 
 </resources>

app/src/main/res/values-zh-rHK/strings.xml

@@ -901,5 +901,7 @@
     <string name="del_login_header">删除登录头</string>
     <string name="show_login_header">查看登录头</string>
     <string name="login_header">登录头</string>
+    <string name="font_scale">字体大小</string>
+    <string name="font_scale_summary">当前字体大小:%.1f</string>
 
 </resources>

app/src/main/res/values-zh-rTW/strings.xml

@@ -903,5 +903,7 @@
     <string name="del_login_header">删除登录头</string>
     <string name="show_login_header">查看登录头</string>
     <string name="login_header">登录头</string>
+    <string name="font_scale">字体大小</string>
+    <string name="font_scale_summary">当前字体大小:%.1f</string>
 
 </resources>

app/src/main/res/values-zh/strings.xml

@@ -903,5 +903,7 @@
     <string name="del_login_header">删除登录头</string>
     <string name="show_login_header">查看登录头</string>
     <string name="login_header">登录头</string>
+    <string name="font_scale">字体大小</string>
+    <string name="font_scale_summary">当前字体大小:%.1f</string>
 
 </resources>

app/src/main/res/values/strings.xml

@@ -904,5 +904,7 @@
     <string name="del_login_header">删除登录头</string>
     <string name="show_login_header">查看登录头</string>
     <string name="login_header">登录头</string>
+    <string name="font_scale">字体大小</string>
+    <string name="font_scale_summary">当前字体大小:%.1f</string>
 
 </resources>

app/src/main/res/xml/pref_config_theme.xml

@@ -33,6 +33,13 @@
         android:title="@string/bar_elevation"
         app:iconSpaceReserved="false" />
 
+    <io.legado.app.ui.widget.prefs.Preference
+        android:defaultValue="true"
+        android:key="fontScale"
+        android:summary="@string/font_scale_summary"
+        android:title="@string/font_scale"
+        app:iconSpaceReserved="false" />
+
     <io.legado.app.ui.widget.prefs.Preference
         android:defaultValue="false"
         android:key="coverConfig"