Target API 29, update gradle and update the dependencies

This also fixes an issue with the use of the Iconics library where it was
initialized twice. I also removed the dependency to [AndroidX Preference
eXtended](https://github.com/takisoft/preferencex-android), as there don't seem
to be any issues with using the vanilla AndroidX preference library anymore.

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

@@ -15,6 +15,8 @@ import android.os.Build;
 import com.beemdevelopment.aegis.db.DatabaseManager;
 import com.beemdevelopment.aegis.services.NotificationService;
 import com.beemdevelopment.aegis.ui.MainActivity;
+import com.mikepenz.iconics.Iconics;
+import com.mikepenz.material_design_iconic_typeface_library.MaterialDesignIconic;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -37,6 +39,9 @@ public class AegisApplication extends Application {
         _prefs = new Preferences(this);
         _lockListeners = new ArrayList<>();
 
+        Iconics.init(this);
+        Iconics.registerFont(new MaterialDesignIconic());
+
         // listen for SCREEN_OFF events
         ScreenOffReceiver receiver = new ScreenOffReceiver();
         IntentFilter intentFilter = new IntentFilter();

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

@@ -10,17 +10,15 @@ import android.view.View;
 import android.widget.TextView;
 import android.widget.Toast;
 
+import androidx.annotation.StringRes;
+import androidx.core.view.LayoutInflaterCompat;
+
 import com.beemdevelopment.aegis.BuildConfig;
 import com.beemdevelopment.aegis.R;
 import com.beemdevelopment.aegis.Theme;
 import com.beemdevelopment.aegis.helpers.ThemeHelper;
 import com.beemdevelopment.aegis.ui.glide.GlideLicense;
-import com.mikepenz.iconics.Iconics;
 import com.mikepenz.iconics.context.IconicsLayoutInflater2;
-import com.mikepenz.material_design_iconic_typeface_library.MaterialDesignIconic;
-
-import androidx.annotation.StringRes;
-import androidx.core.view.LayoutInflaterCompat;
 
 import de.psdev.licensesdialog.LicenseResolver;
 import de.psdev.licensesdialog.LicensesDialog;
@@ -42,9 +40,6 @@ public class AboutActivity extends AegisActivity {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_about);
 
-        Iconics.init(getApplicationContext());
-        Iconics.registerFont(new MaterialDesignIconic());
-
         View btnLicenses = findViewById(R.id.btn_licenses);
         btnLicenses.setOnClickListener(v -> showLicenseDialog());
 

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

@@ -192,6 +192,8 @@ public class MainActivity extends AegisActivity implements EntryListView.Listene
             case CODE_SCAN_IMAGE:
                 onScanImageResult(resultCode, data);
         }
+
+        super.onActivityResult(requestCode, resultCode, data);
     }
 
     @Override
@@ -505,11 +507,6 @@ public class MainActivity extends AegisActivity implements EntryListView.Listene
         _entryListView.removeEntry(oldEntry);
     }
 
-    @Override
-    protected void attachBaseContext(Context newBase) {
-        super.attachBaseContext(IconicsContextWrapper.wrap(newBase));
-    }
-
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         _menu = menu;

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

@@ -40,7 +40,6 @@ import com.beemdevelopment.aegis.services.NotificationService;
 import com.beemdevelopment.aegis.ui.models.ImportEntry;
 import com.beemdevelopment.aegis.ui.preferences.SwitchPreference;
 import com.beemdevelopment.aegis.util.UUIDMap;
-import com.takisoft.preferencex.PreferenceFragmentCompat;
 import com.topjohnwu.superuser.Shell;
 import com.topjohnwu.superuser.io.SuFile;
 import com.topjohnwu.superuser.io.SuFileInputStream;
@@ -59,6 +58,7 @@ import javax.crypto.Cipher;
 
 import androidx.appcompat.app.AlertDialog;
 import androidx.preference.Preference;
+import androidx.preference.PreferenceFragmentCompat;
 
 public class PreferencesFragment extends PreferenceFragmentCompat {
     // activity request codes
@@ -88,7 +88,7 @@ public class PreferencesFragment extends PreferenceFragmentCompat {
     private Preference _groupsPreference;
 
     @Override
-    public void onCreatePreferencesFix(Bundle savedInstanceState, String rootKey) {
+    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
         addPreferencesFromResource(R.xml.preferences);
 
         AegisApplication app = (AegisApplication) getActivity().getApplication();

app/src/main/res/values-zh/strings.xml

@@ -116,7 +116,7 @@
     <string name="reading_file_error">试图读取文件时出错</string>
     <string name="app_lookup_error">错误：应用未安装</string>
     <string name="root_error">错误：无法获得 root 权限</string>
-    <string name="imported_entries_count">导入 %!d 项条目</string>
+    <string name="imported_entries_count">导入 %d 项条目</string>
     <string name="read_entries_count">读取 %!d 项条目。 %!d 项错误。</string>
     <string name="import_error_title">导入时发生一个或多个错误</string>
     <string name="exporting_database_error">试图导出数据库时出错</string>

app/src/main/res/values/styles.xml

@@ -146,11 +146,6 @@
         <item name="android:textColor">#FFFFFF</item>
     </style>
 
-    <style name="AppTheme.NoActionBar.NoActionBar">
-        <item name="windowActionBar">false</item>
-        <item name="windowNoTitle">true</item>
-    </style>
-
     <style name="DialogStyle" parent="Theme.AppCompat.Light.Dialog.Alert">
         <item name="android:background">@color/card_background</item>
         <item name="colorAccent">@color/colorAccent</item>