nt-fwk: create stub for NtOnlineConfig

* Required by nothing camera app
* Part of Nt-framework on stock

nt-fwk/src/com/nothing/ext/INtOnlineConfig.java

@@ -0,0 +1,16 @@
+package com.nothing.ext;
+
+import android.content.ContentResolver;
+import android.database.ContentObserver;
+import org.json.JSONArray;
+
+public interface INtOnlineConfig {
+    public static final INtOnlineConfig DEFAULT = new INtOnlineConfig() {};
+
+    default JSONArray grabConfig(ContentResolver resolver, String projectName) {
+        return null;
+    }
+
+    default void registerContentObserver(ContentResolver resolver, String projectName, boolean notifyForDescendants, ContentObserver observer) {
+    }
+}

nt-fwk/src/com/nothing/onlineconfig/ConfigGrabber.java

@@ -0,0 +1,35 @@
+package com.nothing.onlineconfig;
+
+import android.content.Context;
+import android.util.Log;
+import org.json.JSONArray;
+
+/**
+ * A stub for the com.nothing.onlineconfig.ConfigGrabber class.
+ * The original application uses reflection to instantiate this class,
+ * and the constructor was likely causing a crash. This stub provides a
+ * safe, non-functional implementation that will be found by the reflection
+ * code and will not crash.
+ */
+public class ConfigGrabber {
+    private static final String TAG = "ConfigGrabberStub";
+
+    // The original constructor likely took a Context and a String.
+    // We must match this signature for the reflection call to succeed.
+    public ConfigGrabber(Context context, String projectName) {
+        Log.d(TAG, "ConfigGrabber stub created for project: " + projectName);
+        // The original constructor would have been the source of the crash.
+        // We've replaced it with this safe, no-op implementation.
+    }
+
+    /**
+     * Stubs the grabConfig method to return an empty JSONArray.
+     * This prevents any dependent code from processing a null or invalid config.
+     *
+     * @return An empty JSONArray.
+     */
+    public JSONArray grabConfig() {
+        Log.d(TAG, "grabConfig() called on stub. Returning an empty JSONArray.");
+        return new JSONArray();
+    }
+}

nt-fwk/src/com/nothing/onlineconfig/ConfigObserver.java

@@ -0,0 +1,43 @@
+package com.nothing.onlineconfig;
+
+import android.content.Context;
+import android.database.ContentObserver;
+import android.os.Handler;
+import android.util.Log;
+import org.json.JSONArray;
+
+public class ConfigObserver extends ContentObserver {
+    private static final String TAG = "ConfigObserverStub";
+
+    public interface ConfigUpdater {
+        void updateConfig(JSONArray jSONArray);
+    }
+    
+    // A dependency on ConfigGrabber, which we now have a stub for.
+    private final ConfigGrabber mConfigGrabber;
+    private final ConfigUpdater mConfigUpdater;
+
+    public ConfigObserver(Context context, Handler handler, ConfigUpdater configUpdater, String projectName) {
+        super(handler);
+        Log.d(TAG, "ConfigObserver stub created.");
+        this.mConfigGrabber = new ConfigGrabber(context, projectName);
+        this.mConfigUpdater = configUpdater;
+    }
+
+    public void register() {
+        Log.d(TAG, "register() called on stub. No-op.");
+    }
+
+    public void unregister() {
+        Log.d(TAG, "unregister() called on stub. No-op.");
+    }
+
+    @Override
+    public void onChange(boolean selfChange) {
+        super.onChange(selfChange);
+        Log.d(TAG, "onChange() called on stub. Notifying updater with empty config.");
+        if (mConfigUpdater != null) {
+            mConfigUpdater.updateConfig(mConfigGrabber.grabConfig());
+        }
+    }
+}

nt-fwk/src/com/nothing/onlineconfig/NtOnlineConfigImpl.java

@@ -0,0 +1,26 @@
+package com.nothing.onlineconfig;
+
+import android.content.ContentResolver;
+import android.database.ContentObserver;
+import android.util.Log;
+import com.nothing.ext.INtOnlineConfig;
+import org.json.JSONArray;
+
+public class NtOnlineConfigImpl implements INtOnlineConfig {
+    private static final String TAG = "NtOnlineConfigImplStub";
+
+    public NtOnlineConfigImpl() {
+        Log.d(TAG, "NtOnlineConfigImpl stub created.");
+    }
+
+    @Override
+    public JSONArray grabConfig(ContentResolver resolver, String projectName) {
+        Log.d(TAG, "grabConfig() called on stub. Returning an empty array.");
+        return new JSONArray();
+    }
+
+    @Override
+    public void registerContentObserver(ContentResolver resolver, String projectName, boolean notifyForDescendants, ContentObserver observer) {
+        Log.d(TAG, "registerContentObserver() called on stub. No-op.");
+    }
+}

nt-fwk/src/com/nothing/sdk/onlineconfig/ConfigObserver.java

@@ -0,0 +1,56 @@
+package com.nothing.sdk.onlineconfig;
+
+import android.content.Context;
+import android.database.ContentObserver;
+import android.os.Handler;
+import android.util.Log;
+import org.json.JSONArray;
+import com.nothing.onlineconfig.NtOnlineConfigImpl;
+
+/**
+ * A stub for the ConfigObserver class, located in the com.nothing.sdk.onlineconfig package.
+ * This class is the direct cause of the crash, as indicated by the logcat. This stub
+ * provides a non-functional, safe implementation to prevent the app from crashing.
+ */
+public class ConfigObserver extends ContentObserver {
+    private static final String TAG = "ConfigObserverStub";
+
+    public interface ConfigUpdater {
+        void updateConfig(JSONArray jSONArray);
+    }
+
+    // A simple stub for the ConfigGrabber dependency
+    private static class ConfigGrabberStub {
+        public ConfigGrabberStub(Context context, String projectName) {}
+        public JSONArray grabConfig() { return new JSONArray(); }
+    }
+    
+    private final ConfigGrabberStub mConfigGrabber;
+    private final ConfigUpdater mConfigUpdater;
+
+    public ConfigObserver(Context context, Handler handler, ConfigUpdater configUpdater, String projectName) {
+        super(handler);
+        Log.d(TAG, "ConfigObserver stub created. This should prevent the crash.");
+        // We create a local stub for ConfigGrabber to avoid dependencies on other stubs.
+        this.mConfigGrabber = new ConfigGrabberStub(context, projectName);
+        this.mConfigUpdater = configUpdater;
+        // The original code here is likely the source of the crash. We are bypassing it.
+    }
+
+    public void register() {
+        Log.d(TAG, "register() called on stub. No-op.");
+    }
+
+    public void unregister() {
+        Log.d(TAG, "unregister() called on stub. No-op.");
+    }
+
+    @Override
+    public void onChange(boolean selfChange) {
+        super.onChange(selfChange);
+        Log.d(TAG, "onChange() called on stub. Notifying updater with empty config.");
+        if (mConfigUpdater != null) {
+            mConfigUpdater.updateConfig(mConfigGrabber.grabConfig());
+        }
+    }
+}