Add cleanup methods for detection pipeline

Author: psiddh

Yolo/android/app/src/main/java/com/example/executorchyolodemo/BirdDetectionActivity.java

@@ -97,6 +97,30 @@ protected void onCreate(Bundle savedInstanceState) {
         }
     }
 
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        
+        // Clean up the detection pipeline
+        if (detectionPipeline != null) {
+            detectionPipeline.close();
+            detectionPipeline = null;
+        }
+        
+        Log.d(TAG, "BirdDetectionActivity destroyed");
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+        
+        // Optional: Release resources when app goes to background
+        if (detectionPipeline != null) {
+            detectionPipeline.close();
+            detectionPipeline = null;
+        }
+    }
+
     private void initializeViews() {
         previewView = findViewById(R.id.previewView);
         overlayImageView = findViewById(R.id.overlayImageView);
@@ -432,4 +456,4 @@ protected void onResume() {
         super.onResume();
         updateSessionUI();
     }
-}
+}