Add DohPreference

app/src/main/java/com/hippo/ehviewer/preference/DohPreference.kt

@@ -0,0 +1,19 @@
+package com.hippo.ehviewer.preference
+
+import android.content.Context
+import android.util.AttributeSet
+import androidx.preference.Preference
+import com.hippo.ehviewer.R
+import com.hippo.ehviewer.Settings
+import com.hippo.ehviewer.ui.legacy.EditTextDialogBuilder
+
+class DohPreference @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null,
+) : Preference(context, attrs) {
+    override fun onClick() {
+        val builder = EditTextDialogBuilder(context, Settings.dohUrl, context.getString(R.string.settings_advanced_dns_over_http_hint))
+        builder.setTitle(R.string.settings_advanced_dns_over_http_title)
+        builder.setPositiveButton(android.R.string.ok) { _, _ -> Settings.putDohUrl(builder.text.trim()) }.show()
+    }
+}

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

@@ -423,6 +423,8 @@
     <string name="settings_advanced_proxy_summary_1">%1$s %2$s:%3$d</string>
     <string name="settings_advanced_proxy_summary_2">%1$s</string>
     <string name="settings_advanced_built_in_hosts_title">Built-in hosts.txt</string>
+    <string name="settings_advanced_dns_over_http_title">DNS Over HTTPS</string>
+    <string name="settings_advanced_dns_over_http_hint">Server URL, blank: disable</string>
     <string name="settings_advanced_built_in_hosts_summary">Apply the built-in host-to-IP mapping provided by the app.\nIt can be overridden by custom hosts.txt.</string>
     <string name="settings_advanced_domain_fronting_title">Domain fronting</string>
     <string name="settings_advanced_domain_fronting_summary">Bypass SNI blocking.</string>

app/src/main/res/xml/advanced_settings.xml

@@ -63,10 +63,13 @@
     <rikka.material.preference.MaterialSwitchPreference
         android:defaultValue="false"
         android:key="built_in_hosts_2"
-        android:summary="@string/settings_advanced_built_in_hosts_summary"
         android:title="@string/settings_advanced_built_in_hosts_title"
         app:iconSpaceReserved="false" />
 
+    <com.hippo.ehviewer.preference.DohPreference
+        android:title="@string/settings_advanced_dns_over_http_title"
+        android:iconSpaceReserved="false"/>
+
     <rikka.material.preference.MaterialSwitchPreference
         android:defaultValue="false"
         android:key="domain_fronting"