Don't keep all activity reference

app/src/main/java/com/hippo/ehviewer/Crash.kt

@@ -44,11 +44,6 @@ object Crash {
         fw.write("BuildTime=${BuildConfig.BUILD_TIME}\n")
         fw.write("\n")
 
-        // Runtime
-        fw.write("======== Runtime ========\n")
-        fw.write("TopActivity=${EhApplication.application.topActivity?.javaClass?.name}\n")
-        fw.write("\n")
-
         // Device info
         fw.write("======== DeviceInfo ========\n")
         fw.write("${collectClassStaticInfo(Build::class.java)}\n")

app/src/main/java/com/hippo/ehviewer/EhApplication.kt

@@ -16,7 +16,6 @@
 
 package com.hippo.ehviewer
 
-import android.app.Activity
 import android.app.Application
 import android.content.ComponentCallbacks2
 import androidx.appcompat.app.AppCompatDelegate
@@ -38,7 +37,6 @@ import com.hippo.ehviewer.dailycheck.checkDawn
 import com.hippo.ehviewer.dao.buildMainDB
 import com.hippo.ehviewer.download.DownloadManager
 import com.hippo.ehviewer.legacy.cleanObsoleteCache
-import com.hippo.ehviewer.ui.EhActivity
 import com.hippo.ehviewer.ui.keepNoMediaFileStatus
 import com.hippo.util.ReadableTime
 import com.hippo.yorozuya.FileUtils
@@ -58,18 +56,6 @@ import javax.net.ssl.TrustManagerFactory
 import javax.net.ssl.X509TrustManager
 
 class EhApplication : Application(), DefaultLifecycleObserver, ImageLoaderFactory {
-    private val mActivityList = ArrayList<Activity>()
-    val topActivity: EhActivity?
-        get() = if (mActivityList.isNotEmpty()) {
-            mActivityList[mActivityList.size - 1] as EhActivity
-        } else {
-            null
-        }
-
-    fun recreateAllActivity() {
-        mActivityList.forEach { it.recreate() }
-    }
-
     @OptIn(DelicateCoroutinesApi::class)
     override fun onCreate() {
         ProcessLifecycleOwner.get().lifecycle.addObserver(this)
@@ -143,14 +129,6 @@ class EhApplication : Application(), DefaultLifecycleObserver, ImageLoaderFactor
         }
     }
 
-    fun registerActivity(activity: Activity) {
-        mActivityList.add(activity)
-    }
-
-    fun unregisterActivity(activity: Activity) {
-        mActivityList.remove(activity)
-    }
-
     override fun onPause(owner: LifecycleOwner) {
         if (!locked) {
             locked_last_leave_time = System.currentTimeMillis() / 1000

app/src/main/java/com/hippo/ehviewer/ui/EhActivity.kt

@@ -47,12 +47,6 @@ abstract class EhActivity : AppCompatActivity() {
         layoutInflater.factory2 =
             LayoutInflaterFactory(delegate).addOnViewCreatedListener(WindowInsetsHelper.LISTENER)
         super.onCreate(savedInstanceState)
-        (application as EhApplication).registerActivity(this)
-    }
-
-    override fun onDestroy() {
-        super.onDestroy()
-        (application as EhApplication).unregisterActivity(this)
     }
 
     override fun onResume() {

app/src/main/java/com/hippo/ehviewer/ui/fragment/EhFragment.kt

@@ -28,7 +28,6 @@ import com.google.android.material.timepicker.MaterialTimePicker
 import com.google.android.material.timepicker.MaterialTimePicker.INPUT_MODE_CLOCK
 import com.google.android.material.timepicker.TimeFormat.CLOCK_12H
 import com.google.android.material.timepicker.TimeFormat.CLOCK_24H
-import com.hippo.ehviewer.EhApplication
 import com.hippo.ehviewer.R
 import com.hippo.ehviewer.Settings
 import com.hippo.ehviewer.client.EhCookieStore
@@ -133,7 +132,10 @@ class EhFragment : BasePreferenceFragment() {
             }
         } else if (Settings.KEY_BLACK_DARK_THEME == key) {
             if (requireActivity().resources.configuration.uiMode and Configuration.UI_MODE_NIGHT_YES > 0) {
-                EhApplication.application.recreateAllActivity()
+                val nightMode = AppCompatDelegate.getDefaultNightMode()
+                AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_AUTO_TIME)
+                AppCompatDelegate.setDefaultNightMode(nightMode)
+                requireActivity().recreate()
             }
             return true
         } else if (Settings.KEY_REQUEST_NEWS == key) {