Info about background restrictions

app/src/main/java/org/koitharu/kotatsu/core/prefs/AppSettings.kt

@@ -166,6 +166,7 @@ class AppSettings private constructor(private val prefs: SharedPreferences) :
 		const val KEY_LOCAL_STORAGE = "local_storage"
 		const val KEY_READER_SWITCHERS = "reader_switchers"
 		const val KEY_TRACK_SOURCES = "track_sources"
+		const val KEY_TRACK_WARNING = "track_warning"
 		const val KEY_APP_UPDATE = "app_update"
 		const val KEY_APP_UPDATE_AUTO = "app_update_auto"
 		const val KEY_TRACKER_NOTIFICATIONS = "tracker_notifications"

app/src/main/java/org/koitharu/kotatsu/settings/TrackerSettingsFragment.kt

@@ -4,6 +4,9 @@ import android.content.Intent
 import android.os.Build
 import android.os.Bundle
 import android.provider.Settings
+import android.text.style.URLSpan
+import androidx.core.text.buildSpannedString
+import androidx.core.text.inSpans
 import androidx.preference.MultiSelectListPreference
 import androidx.preference.Preference
 import org.koitharu.kotatsu.R
@@ -19,6 +22,17 @@ class TrackerSettingsFragment : BasePreferenceFragment(R.string.new_chapters_che
 
 		findPreference<MultiSelectListPreference>(AppSettings.KEY_TRACK_SOURCES)
 			?.summaryProvider = MultiSummaryProvider(R.string.dont_check)
+		val warningPreference = findPreference<Preference>(AppSettings.KEY_TRACK_WARNING)
+		if (warningPreference != null) {
+			warningPreference.summary = buildSpannedString {
+				append(getString(R.string.tracker_warning))
+				append(" ")
+				inSpans(URLSpan("https://dontkillmyapp.com/")) {
+					append(getString(R.string.read_more))
+				}
+			}
+			warningPreference
+		}
 	}
 
 	override fun onPreferenceTreeClick(preference: Preference?): Boolean {

app/src/main/java/org/koitharu/kotatsu/settings/utils/LinksPreference.kt

@@ -0,0 +1,23 @@
+package org.koitharu.kotatsu.settings.utils
+
+import android.content.Context
+import android.text.method.LinkMovementMethod
+import android.util.AttributeSet
+import android.widget.TextView
+import androidx.preference.Preference
+import androidx.preference.PreferenceViewHolder
+
+class LinksPreference @JvmOverloads constructor(
+	context: Context?,
+	attrs: AttributeSet? = null,
+	defStyleAttr: Int = androidx.preference.R.attr.preferenceStyle,
+	defStyleRes: Int = 0,
+) : Preference(context, attrs, defStyleAttr, defStyleRes) {
+
+
+	override fun onBindViewHolder(holder: PreferenceViewHolder) {
+		super.onBindViewHolder(holder)
+		val summaryView = holder.findViewById(android.R.id.summary) as TextView
+		summaryView.movementMethod = LinkMovementMethod.getInstance()
+	}
+}

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

@@ -212,4 +212,6 @@
 	<string name="welcome">Добро пожаловать</string>
 	<string name="text_clear_search_history_prompt">Вы действительно хотите удалить все недавние поисковые запросы? Это действие не может быть отменено.</string>
 	<string name="backup_saved">Резервная копия успешно сохранена</string>
+	<string name="tracker_warning">Некоторые производители могут изменять поведение системы, нарушая работу фоновых задач.</string>
+	<string name="read_more">Подробнее</string>
 </resources>

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

@@ -213,5 +213,7 @@
 	<string name="other">Other</string>
 	<string name="languages">Languages</string>
 	<string name="welcome">Welcome</string>
-	<string name="backup_saved">Backup saved succesfully</string>
+	<string name="backup_saved">Backup saved successfully</string>
+	<string name="tracker_warning">Some manufacturers can change the system behavior, which may breaks background tasks.</string>
+	<string name="read_more">Read more</string>
 </resources>

app/src/main/res/xml/pref_backup.xml

@@ -16,7 +16,7 @@
 		app:iconSpaceReserved="false" />
 
 	<Preference
-		android:icon="@drawable/ic_info_outilne"
+		android:icon="@drawable/ic_info_outline"
 		android:persistent="false"
 		android:selectable="false"
 		android:summary="@string/backup_information"

app/src/main/res/xml/pref_tracker.xml

@@ -24,4 +24,12 @@
 		android:title="@string/notifications_settings"
 		app:iconSpaceReserved="false" />
 
+	<org.koitharu.kotatsu.settings.utils.LinksPreference
+		android:key="track_warning"
+		android:icon="@drawable/ic_info_outline"
+		android:persistent="false"
+		android:selectable="false"
+		android:summary="@string/tracker_warning"
+		app:allowDividerAbove="true" />
+
 </PreferenceScreen>