Restrict expo-camera hardware pictureSize to prevent fatal native OutOfMemoryError crashes on high-res tablets

src/screens/CameraScreen.tsx

@@ -73,6 +73,7 @@ export default function CameraScreen({
   const [countdown, setCountdown] = useState<number | string>('');
   const [isCapturing, setIsCapturing] = useState<boolean>(false);
   const [hasStarted, setHasStarted] = useState<boolean>(false);
+  const [pictureSize, setPictureSize] = useState<string | undefined>(undefined);
 
   // Burst mode state
   const [burstIndex, setBurstIndex] = useState<number>(0);
@@ -158,6 +159,40 @@ export default function CameraScreen({
     };
   }, []);
 
+  // Set safe picture size to avoid OOM
+  const handleCameraReady = async () => {
+    if (expoCameraRef.current) {
+      try {
+        const sizes = await expoCameraRef.current.getAvailablePictureSizes();
+        if (sizes && sizes.length > 0) {
+          console.log('Available camera sizes:', sizes);
+          const parsedSizes = sizes.map(s => {
+            const parts = s.split('x');
+            if (parts.length === 2) {
+              const w = parseInt(parts[0], 10);
+              const h = parseInt(parts[1], 10);
+              return { size: s, pixels: w * h, w, h };
+            }
+            return { size: s, pixels: 0, w: 0, h: 0 };
+          }).filter(s => s.pixels > 0);
+
+          parsedSizes.sort((a, b) => a.pixels - b.pixels);
+          // Find the smallest size that has at least 1920 width or height (approx 2MP)
+          const optimal = parsedSizes.find(s => Math.max(s.w, s.h) >= 1920);
+          
+          if (optimal) {
+            console.log('Setting optimal pictureSize to prevent OOM:', optimal.size);
+            setPictureSize(optimal.size);
+          } else if (parsedSizes.length > 0) {
+            setPictureSize(parsedSizes[parsedSizes.length - 1].size);
+          }
+        }
+      } catch (e) {
+        console.warn('Failed to fetch picture sizes:', e);
+      }
+    }
+  };
+
   // Cancel capture process
   const handleLocalCancel = async () => {
     if (burstTimerRef.current) clearTimeout(burstTimerRef.current);
@@ -503,6 +538,8 @@ export default function CameraScreen({
               ref={expoCameraRef}
               style={styles.cameraPreview}
               facing="front"
+              pictureSize={pictureSize}
+              onCameraReady={handleCameraReady}
             />
           )}
         </View>