Swallow RuntimeExcpetions on autoFocus (#332)

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

@@ -823,6 +823,7 @@ class Camera1 extends CameraController implements Camera.PreviewCallback, Camera
                 mCamera.setParameters(params);
                 mCameraCallbacks.dispatchOnFocusStart(gesture, p);
                 // TODO this is not guaranteed to be called... Fix.
+                try {
                     mCamera.autoFocus(new Camera.AutoFocusCallback() {
                         @Override
                         public void onAutoFocus(boolean success, Camera camera) {
@@ -832,6 +833,12 @@ class Camera1 extends CameraController implements Camera.PreviewCallback, Camera
                             mHandler.get().postDelayed(mPostFocusResetRunnable, mPostFocusResetDelay);
                         }
                     });
+                } catch (RuntimeException e) {
+                    // Handling random auto-focus exception on some devices
+                    // See https://github.com/natario1/CameraView/issues/181
+                    LOG.e("startAutoFocus:", "Error calling autoFocus", e);
+                    mCameraCallbacks.dispatchOnFocusEnd(gesture, false, p);
+                }
             }
         });
     }