Fix an issue where the app would lock when showing DocumentsUI

app/src/main/java/com/beemdevelopment/aegis/AegisApplication.java

@@ -39,6 +39,7 @@ public class AegisApplication extends Application {
     private VaultManager _manager;
     private Preferences _prefs;
     private List<LockListener> _lockListeners;
+    private boolean _blockAutoLock;
 
     private static final String CODE_LOCK_STATUS_ID = "lock_status_channel";
     private static final String CODE_LOCK_VAULT_ACTION = "lock_vault";
@@ -135,6 +136,15 @@ public class AegisApplication extends Application {
         _lockListeners.remove(listener);
     }
 
+    /**
+     * Sets whether to block automatic lock on minimization. This should only be called
+     * by activities before invoking an intent that shows a DocumentsUI, because that
+     * action leads AppLifecycleObserver to believe that the app has been minimized.
+     */
+    public void setBlockAutoLock(boolean block) {
+        _blockAutoLock = block;
+    }
+
     /**
      * Locks the vault and the app.
      * @param userInitiated whether or not the user initiated the lock in MainActivity.
@@ -189,7 +199,9 @@ public class AegisApplication extends Application {
     private class AppLifecycleObserver implements LifecycleEventObserver {
         @Override
         public void onStateChanged(@NonNull LifecycleOwner source, @NonNull Lifecycle.Event event) {
-            if (event == Lifecycle.Event.ON_STOP && isAutoLockEnabled(Preferences.AUTO_LOCK_ON_MINIMIZE)) {
+            if (event == Lifecycle.Event.ON_STOP
+                    && isAutoLockEnabled(Preferences.AUTO_LOCK_ON_MINIMIZE)
+                    && !_blockAutoLock) {
                 lock(false);
             }
         }

app/src/main/java/com/beemdevelopment/aegis/ui/AegisActivity.java

@@ -55,6 +55,12 @@ public abstract class AegisActivity extends AppCompatActivity implements AegisAp
         super.onDestroy();
     }
 
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        _app.setBlockAutoLock(false);
+    }
+
     @Override
     public void onLocked(boolean userInitiated) {
         setResult(RESULT_CANCELED, null);

app/src/main/java/com/beemdevelopment/aegis/ui/MainActivity.java

@@ -407,6 +407,8 @@ public class MainActivity extends AegisActivity implements EntryListView.Listene
     }
 
     private void startScanImageActivity() {
+        _app.setBlockAutoLock(true);
+
         Intent galleryIntent = new Intent(Intent.ACTION_PICK);
         galleryIntent.setDataAndType(android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI, "image/*");
 

app/src/main/java/com/beemdevelopment/aegis/ui/PreferencesFragment.java

@@ -87,6 +87,7 @@ public class PreferencesFragment extends PreferenceFragmentCompat {
     private static final int CODE_BACKUPS = 8;
 
     private Intent _result;
+    private AegisApplication _app;
     private Preferences _prefs;
     private VaultManager _vault;
 
@@ -112,9 +113,9 @@ public class PreferencesFragment extends PreferenceFragmentCompat {
     public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
         addPreferencesFromResource(R.xml.preferences);
 
-        AegisApplication app = (AegisApplication) getActivity().getApplication();
-        _prefs = app.getPreferences();
-        _vault = app.getVaultManager();
+        _app = (AegisApplication) getActivity().getApplication();
+        _prefs = _app.getPreferences();
+        _vault = _app.getVaultManager();
 
         // set the result intent in advance
         setResult(new Intent());
@@ -190,6 +191,8 @@ public class PreferencesFragment extends PreferenceFragmentCompat {
 
                     Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
                     intent.setType("*/*");
+
+                    _app.setBlockAutoLock(true);
                     startActivityForResult(intent, CODE_IMPORT);
                 });
                 return true;
@@ -282,14 +285,14 @@ public class PreferencesFragment extends PreferenceFragmentCompat {
         });
 
         Preference tapToRevealTimePreference = findPreference("pref_tap_to_reveal_time");
-        tapToRevealTimePreference.setSummary(app.getPreferences().getTapToRevealTime() + " seconds");
+        tapToRevealTimePreference.setSummary(_app.getPreferences().getTapToRevealTime() + " seconds");
         tapToRevealTimePreference.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
             @Override
             public boolean onPreferenceClick(Preference preference) {
                 Dialogs.showNumberPickerDialog(getActivity(), new Dialogs.NumberInputListener() {
                     @Override
                     public void onNumberInputResult(int number) {
-                        app.getPreferences().setTapToRevealTime(number);
+                        _app.getPreferences().setTapToRevealTime(number);
                         tapToRevealTimePreference.setSummary(number + " seconds");
                         _result.putExtra("needsRefresh", true);
                     }
@@ -735,6 +738,7 @@ public class PreferencesFragment extends PreferenceFragmentCompat {
                         .setType(getExportMimeType(requestCode))
                         .putExtra(Intent.EXTRA_TITLE, fileInfo.toString());
 
+                _app.setBlockAutoLock(true);
                 startActivityForResult(intent, requestCode);
             });
 
@@ -771,6 +775,8 @@ public class PreferencesFragment extends PreferenceFragmentCompat {
                             .setType(getExportMimeType(requestCode))
                             .putExtra(Intent.EXTRA_STREAM, uri);
                     Intent chooser = Intent.createChooser(intent, getString(R.string.pref_export_summary));
+
+                    _app.setBlockAutoLock(true);
                     startActivity(chooser);
                 });
             });
@@ -1014,6 +1020,7 @@ public class PreferencesFragment extends PreferenceFragmentCompat {
                 | Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION
                 | Intent.FLAG_GRANT_PREFIX_URI_PERMISSION);
 
+        _app.setBlockAutoLock(true);
         startActivityForResult(intent, CODE_BACKUPS);
     }