Activity: make dark/night theme follow system on Q

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

2 files changed, 10 insertions, 3 deletions

diff --git a/app/src/main/java/com/wireguard/android/activity/SettingsActivity.java b/app/src/main/java/com/wireguard/android/activity/SettingsActivity.java
index 475c579e..89ba0c12 100644
--- a/app/src/main/java/com/wireguard/android/activity/SettingsActivity.java
+++ b/app/src/main/java/com/wireguard/android/activity/SettingsActivity.java
@@ -6,6 +6,7 @@
 package com.wireguard.android.activity;
 
 import android.content.pm.PackageManager;
+import android.os.Build;
 import android.os.Bundle;
 import androidx.annotation.Nullable;
 import androidx.core.app.ActivityCompat;
@@ -91,13 +92,16 @@ public class SettingsActivity extends ThemeChangeAwareActivity {
         @Override
         public void onCreatePreferences(final Bundle savedInstanceState, final String key) {
             addPreferencesFromResource(R.xml.preferences);
+            final PreferenceScreen screen = getPreferenceScreen();
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q)
+                screen.removePreference(getPreferenceManager().findPreference("dark_theme"));
+
             final Preference wgQuickOnlyPrefs[] = {
                     getPreferenceManager().findPreference("tools_installer"),
                     getPreferenceManager().findPreference("restore_on_boot")
             };
             for (final Preference pref : wgQuickOnlyPrefs)
                 pref.setVisible(false);
-            final PreferenceScreen screen = getPreferenceScreen();
             Application.getBackendAsync().thenAccept(backend -> {
                 for (final Preference pref : wgQuickOnlyPrefs) {
                     if (backend instanceof WgQuickBackend)
diff --git a/app/src/main/java/com/wireguard/android/activity/ThemeChangeAwareActivity.java b/app/src/main/java/com/wireguard/android/activity/ThemeChangeAwareActivity.java
index 0309722c..977f64ea 100644
--- a/app/src/main/java/com/wireguard/android/activity/ThemeChangeAwareActivity.java
+++ b/app/src/main/java/com/wireguard/android/activity/ThemeChangeAwareActivity.java
@@ -7,6 +7,7 @@ package com.wireguard.android.activity;
 
 import android.content.SharedPreferences;
 import android.content.res.Resources;
+import android.os.Build;
 import android.os.Bundle;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AppCompatActivity;
@@ -55,12 +56,14 @@ public abstract class ThemeChangeAwareActivity extends AppCompatActivity impleme
     @Override
     protected void onCreate(@Nullable final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        Application.getSharedPreferences().registerOnSharedPreferenceChangeListener(this);
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q)
+            Application.getSharedPreferences().registerOnSharedPreferenceChangeListener(this);
     }
 
     @Override
     protected void onDestroy() {
-        Application.getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this);
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q)
+            Application.getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this);
         super.onDestroy();
     }