1 files changed, 66 insertions, 0 deletions
diff --git a/src/main/java/de/pixart/messenger/utils/Compatibility.java b/src/main/java/de/pixart/messenger/utils/Compatibility.java
new file mode 100644
index 000000000..95d7b4ef2
--- /dev/null
+++ b/src/main/java/de/pixart/messenger/utils/Compatibility.java
@@ -0,0 +1,66 @@
+package de.pixart.messenger.utils;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.os.Build;
+import android.preference.Preference;
+import android.preference.PreferenceCategory;
+import android.preference.PreferenceManager;
+import android.preference.PreferenceScreen;
+import android.support.annotation.BoolRes;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import de.pixart.messenger.R;
+import de.pixart.messenger.ui.SettingsActivity;
+import de.pixart.messenger.ui.SettingsFragment;
+
+public class Compatibility {
+    private static final List<String> UNUSED_SETTINGS_POST_TWENTYSIX = Arrays.asList(
+            SettingsActivity.SHOW_FOREGROUND_SERVICE,
+            "led",
+            "notification_ringtone",
+            "notification_headsup",
+            "vibrate_on_notification");
+    private static final List<String> UNUESD_SETTINGS_PRE_TWENTYSIX = Collections.singletonList("more_notification_settings");
+
+    public static boolean twentySix() {
+        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.O;
+    }
+
+    private static boolean getBooleanPreference(Context context, String name, @BoolRes int res) {
+        return getPreferences(context).getBoolean(name, context.getResources().getBoolean(res));
+    }
+
+    private static SharedPreferences getPreferences(final Context context) {
+        return PreferenceManager.getDefaultSharedPreferences(context);
+    }
+
+    public static boolean keepForegroundService(Context context) {
+        return twentySix() || getBooleanPreference(context, SettingsActivity.SHOW_FOREGROUND_SERVICE, R.bool.show_foreground_service);
+    }
+
+    public static void removeUnusedPreferences(SettingsFragment settingsFragment) {
+        List<PreferenceScreen> screens = Arrays.asList(
+                (PreferenceScreen) settingsFragment.findPreference("notifications"));
+        List<PreferenceCategory> categories = Arrays.asList(
+                (PreferenceCategory) settingsFragment.findPreference("general"));
+        for (String key : (twentySix() ? UNUSED_SETTINGS_POST_TWENTYSIX : UNUESD_SETTINGS_PRE_TWENTYSIX)) {
+            Preference preference = settingsFragment.findPreference(key);
+            if (preference != null) {
+                for (PreferenceScreen screen : screens) {
+                    if (screen != null) {
+                        screen.removePreference(preference);
+                    }
+                }
+                for (PreferenceCategory category : categories) {
+                    if (category != null) {
+                        category.removePreference(preference);
+                    }
+                }
+            }
+        }
+    }
+}
+\ No newline at end of file