Fix Runtime Crashes: Preference NPEs and Resource Mismatches

app/build.gradle

@@ -6,6 +6,7 @@ android {
     compileSdk = 35
 
     defaultConfig {
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         applicationId = "com.best.deskclock"
         minSdk = 23
         targetSdk = 35
@@ -71,7 +72,9 @@ android {
     }
 
     lintOptions {
-        abortOnError = false
+        baseline file("lint-baseline.xml")
+        abortOnError true
+        fatal "InconsistentArrays"
     }
 
     compileOptions {
@@ -94,6 +97,11 @@ android {
 }
 
 dependencies {
+    androidTestImplementation "androidx.test.ext:junit:1.2.1"
+    androidTestImplementation "androidx.test.espresso:espresso-core:3.6.1"
+    androidTestImplementation "androidx.test:runner:1.6.1"
+    androidTestImplementation "androidx.test:rules:1.6.1"
+    androidTestImplementation "androidx.test.espresso:espresso-intents:3.6.1"
     // Room components
     implementation "androidx.room:room-runtime:$rootProject.roomVersion"
     annotationProcessor "androidx.room:room-compiler:$rootProject.roomVersion"

app/src/androidTest/java/com/best/deskclock/settings/SettingsSmokeTest.java

@@ -0,0 +1,32 @@
+package com.best.deskclock.settings;
+
+import static androidx.test.espresso.Espresso.onView;
+import static androidx.test.espresso.matcher.ViewMatchers.isDisplayed;
+import static androidx.test.espresso.matcher.ViewMatchers.withText;
+import static androidx.test.espresso.assertion.ViewAssertions.matches;
+
+import androidx.test.ext.junit.rules.ActivityScenarioRule;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.filters.LargeTest;
+
+import com.best.deskclock.DeskClock;
+import com.best.deskclock.R;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@LargeTest
+@RunWith(AndroidJUnit4.class)
+public class SettingsSmokeTest {
+
+    @Rule
+    public ActivityScenarioRule<DeskClock> mActivityScenarioRule =
+            new ActivityScenarioRule<>(DeskClock.class);
+
+    @Test
+    public void testAppLaunches() {
+        // Just verify DeskClock launches and displays the "Clock" tab or similar
+        onView(withText(R.string.menu_clock)).check(matches(isDisplayed()));
+    }
+}

app/src/main/java/com/best/deskclock/settings/custompreference/CustomListPreference.java

@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-3.0-only
+
+package com.best.deskclock.settings.custompreference;
+
+import android.content.Context;
+import android.util.AttributeSet;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.preference.ListPreference;
+import androidx.preference.PreferenceViewHolder;
+
+import com.best.deskclock.R;
+
+/**
+ * A {@link ListPreference} with a custom Material-style layout.
+ *
+ * <p>This class applies a custom card-based appearance to the preference row
+ * and updates its typography and visual styling based on the user's settings
+ * (font, card background, card border, etc.).</p>
+ *
+ * <p>The preference behavior remains identical to a standard {@link ListPreference};
+ * only its visual presentation is customized.</p>
+ */
+public class CustomListPreference extends ListPreference {
+
+    public CustomListPreference(@NonNull Context context, @Nullable AttributeSet attrs) {
+        super(context, attrs);
+        setLayoutResource(R.layout.settings_preference_layout);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull PreferenceViewHolder holder) {
+        PreferenceStyler.apply(holder);
+        super.onBindViewHolder(holder);
+    }
+
+}

app/src/main/java/com/best/deskclock/settings/custompreference/CustomPreference.java

@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-3.0-only
+
+package com.best.deskclock.settings.custompreference;
+
+import android.content.Context;
+import android.util.AttributeSet;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.preference.Preference;
+import androidx.preference.PreferenceViewHolder;
+
+import com.best.deskclock.R;
+
+/**
+ * A {@link Preference} with a custom Material-style layout.
+ *
+ * <p>This class applies a custom card-based appearance to the preference row
+ * and updates its typography and visual styling based on the user's settings
+ * (font, card background, card border, etc.).</p>
+ *
+ * <p>The preference behavior remains identical to a standard {@link Preference};
+ * only its visual presentation is customized.</p>
+ */
+public class CustomPreference extends Preference {
+
+    public CustomPreference(@NonNull Context context, @Nullable AttributeSet attrs) {
+        super(context, attrs);
+        setLayoutResource(R.layout.settings_preference_layout);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull PreferenceViewHolder holder) {
+        PreferenceStyler.apply(holder);
+        super.onBindViewHolder(holder);
+    }
+
+}

app/src/main/java/com/best/deskclock/settings/custompreference/CustomPreferenceCategory.java

@@ -0,0 +1,49 @@
+package com.best.deskclock.settings.custompreference;
+
+import static com.best.deskclock.DeskClockApplication.getDefaultSharedPreferences;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.util.AttributeSet;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.preference.PreferenceCategory;
+import androidx.preference.PreferenceViewHolder;
+
+import com.best.deskclock.R;
+import com.best.deskclock.data.SettingsDAO;
+import com.best.deskclock.utils.ThemeUtils;
+
+/**
+ * A {@link PreferenceCategory} with a custom layout.
+ *
+ * <p>This class updates its typography and visual styling based on the user's settings
+ * (font, accent color, etc.).</p>
+ *
+ * <p>The preference behavior remains identical to a standard {@link PreferenceCategory};
+ * only its visual presentation is customized.</p>
+ */
+public class CustomPreferenceCategory extends PreferenceCategory {
+
+    public CustomPreferenceCategory(@NonNull Context context, @Nullable AttributeSet attrs) {
+        super(context, attrs);
+        setLayoutResource(R.layout.settings_preference_category_layout);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull PreferenceViewHolder holder) {
+        if (holder.itemView.isInEditMode()) {
+            // Skip logic during Android Studio preview
+            return;
+        }
+
+        super.onBindViewHolder(holder);
+
+        SharedPreferences prefs = getDefaultSharedPreferences(getContext());
+
+        TextView prefTitle = (TextView) holder.findViewById(android.R.id.title);
+        prefTitle.setTypeface(ThemeUtils.boldTypeface(SettingsDAO.getGeneralFont(prefs)));
+    }
+}