handle currently uncaught exception in startAutoFocus

cameraview/src/main/java/com/otaliastudios/cameraview/Camera1.java

@@ -768,6 +768,8 @@ class Camera1 extends CameraController {
     boolean startAutoFocus(@Nullable final Gesture gesture, PointF point) {
         if (!isCameraAvailable()) return false;
         if (!mOptions.isAutoFocusSupported()) return false;
+
+        try {
             final PointF p = new PointF(point.x, point.y); // copy.
             List<Camera.Area> meteringAreas2 = computeMeteringAreas(p.x, p.y);
             List<Camera.Area> meteringAreas1 = meteringAreas2.subList(0, 1);
@@ -794,6 +796,15 @@ class Camera1 extends CameraController {
             }
             return true;
         }
+        catch (Exception e) {
+            // at least setParameters may fail.
+            // TODO why does it fail and is it possible to prevent such errors?
+            CameraException cameraException = new CameraConfigurationFailedException("Failed to " +
+                    "start auto focus.", e);
+            mCameraCallbacks.onError(cameraException);
+            return false;
+        }
+    }
 
 
     private List<Camera.Area> computeMeteringAreas(double viewClickX, double viewClickY) {