Apply a hack to detect programmatic changes to SwitchPreference

app/src/main/java/me/impy/aegis/ui/PreferencesFragment.java

@@ -10,7 +10,6 @@ import android.os.Bundle;
 import android.preference.EditTextPreference;
 import android.preference.Preference;
 import android.preference.PreferenceFragment;
-import android.preference.SwitchPreference;
 import android.support.v7.app.AlertDialog;
 import android.support.v7.app.AppCompatActivity;
 import android.view.Window;
@@ -40,6 +39,7 @@ import me.impy.aegis.importers.AegisImporter;
 import me.impy.aegis.importers.DatabaseImporter;
 import me.impy.aegis.importers.DatabaseImporterException;
 import me.impy.aegis.ui.dialogs.PasswordDialogFragment;
+import me.impy.aegis.ui.preferences.SwitchPreference;
 import me.impy.aegis.util.ByteInputStream;
 
 public class PreferencesFragment extends PreferenceFragment implements PasswordDialogFragment.Listener {
@@ -413,7 +413,7 @@ public class PreferencesFragment extends PreferenceFragment implements PasswordD
 
     private void updateEncryptionPreference() {
         boolean encrypted = _db.getFile().isEncrypted();
-        _encryptionPreference.setChecked(encrypted);
+        _encryptionPreference.setChecked(encrypted, true);
         _slotsPreference.setEnabled(encrypted);
     }
 }

app/src/main/java/me/impy/aegis/ui/preferences/SwitchPreference.java

@@ -0,0 +1,48 @@
+package me.impy.aegis.ui.preferences;
+
+import android.content.Context;
+import android.os.Build;
+import android.support.annotation.RequiresApi;
+import android.util.AttributeSet;
+
+public class SwitchPreference extends android.preference.SwitchPreference {
+    private OnPreferenceChangeListener _listener;
+
+    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
+    public SwitchPreference(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
+        super(context, attrs, defStyleAttr, defStyleRes);
+    }
+
+    public SwitchPreference(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    public SwitchPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public SwitchPreference(Context context) {
+        super(context);
+    }
+
+    @Override
+    public void setOnPreferenceChangeListener(OnPreferenceChangeListener listener) {
+        super.setOnPreferenceChangeListener(listener);
+        _listener = listener;
+    }
+
+    @Override
+    public void setChecked(boolean checked) {
+        setChecked(true, false);
+    }
+
+    public void setChecked(boolean checked, boolean silent) {
+        if (silent) {
+            super.setOnPreferenceChangeListener(null);
+        }
+        super.setChecked(checked);
+        if (silent) {
+            super.setOnPreferenceChangeListener(_listener);
+        }
+    }
+}

app/src/main/res/xml/preferences.xml

@@ -31,7 +31,7 @@
             android:inputType="number"
             android:defaultValue="30"
             android:dialogTitle="Set number of seconds of inactivity before Aegis locks the database"/>
-        <SwitchPreference
+        <me.impy.aegis.ui.preferences.SwitchPreference
             android:key="pref_encryption"
             android:title="@string/pref_encryption_title"
             android:summary="@string/pref_encryption_summary"