Avoid crashing in direct-boot mode

The settings activity can't open in direct-boot mode. The emoji pane
opens without the "last used" data.

1 files changed, 12 insertions, 2 deletions

diff --git a/srcs/juloo.keyboard2/SettingsActivity.java b/srcs/juloo.keyboard2/SettingsActivity.java
index c6454a7..04fe501 100644
--- a/srcs/juloo.keyboard2/SettingsActivity.java
+++ b/srcs/juloo.keyboard2/SettingsActivity.java
@@ -14,9 +14,13 @@ public class SettingsActivity extends PreferenceActivity
   {
     detectSystemTheme();
     super.onCreate(savedInstanceState);
+    SharedPreferences prefs;
+    // The preferences can't be read when in direct-boot mode. Avoid crashing
+    // and don't allow changing the settings.
+    try { prefs = PreferenceManager.getDefaultSharedPreferences(this); }
+    catch (Exception _e) { fallbackEncrypted(); return; }
     addPreferencesFromResource(R.xml.settings);
-    PreferenceManager.getDefaultSharedPreferences(this)
-      .registerOnSharedPreferenceChangeListener(this.new OnPreferencesChange());
+    prefs.registerOnSharedPreferenceChangeListener(this.new OnPreferencesChange());
   }
 
   /** The default theme is [Theme.DeviceDefault], which is dark. Detect if the
@@ -31,6 +35,12 @@ public class SettingsActivity extends PreferenceActivity
     }
   }
 
+  void fallbackEncrypted()
+  {
+    // Can't communicate with the user here.
+    finish();
+  }
+
   /** See DirectBootAwarePreferences. */
   class OnPreferencesChange implements SharedPreferences.OnSharedPreferenceChangeListener
   {