小编Hen*_*our的帖子

我正在尝试将图像上传到移动应用程序上的 firebase 云存储，它可以工作，但在网络上它会出现这样的错误........................ ...................................................... ...................................................... ......................................

 Error: Unsupported operation: _Namespace
    at Object.throw_ [as throw] (http://localhost:52964/dart_sdk.js:5067:11)
    at Function.get _namespacePointer [as _namespacePointer] (http://localhost:52964/dart_sdk.js:56707:17)
    at Function._namespacePointer (http://localhost:52964/dart_sdk.js:54523:28)
    at Function._dispatchWithNamespace (http://localhost:52964/dart_sdk.js:54526:31)
    at io._File.new.open (http://localhost:52964/dart_sdk.js:54641:23)
    at io._File.new.readAsBytes (http://localhost:52964/dart_sdk.js:54787:19)
at firebase_storage$.FireBaseStorageMethods.new.uploadImage (http://localhost:52964/packages/flutterfire/utils/firebase_storage.dart.lib.js:51:48)
    at uploadImage.next (<anonymous>)
    at runBody (http://localhost:52964/dart_sdk.js:40590:34)
    at Object._async [as async] (http://localhost:52964/dart_sdk.js:40621:7)
at firebase_storage$.FireBaseStorageMethods.new.uploadImage (http://localhost:52964/packages/flutterfire/utils/firebase_storage.dart.lib.js:42:20)
at http://localhost:52964/packages/flutterfire/views/product/add_product.dart.lib.js:235:71
at ink_well._InkResponseState.new.[_handleTap] (http://localhost:52964/packages/flutter/src/material/icon_button.dart.lib.js:40468:31)
at tap.TapGestureRecognizer.new.invokeCallback (http://localhost:52964/packages/flutter/src/gestures/recognizer.dart.lib.js:190:18)
at tap.TapGestureRecognizer.new.handleTapUp (http://localhost:52964/packages/flutter/src/gestures/tap.dart.lib.js:409:40)
at tap.TapGestureRecognizer.new.[_checkUp] (http://localhost:52964/packages/flutter/src/gestures/tap.dart.lib.js:217:12)
at tap.TapGestureRecognizer.new.handlePrimaryPointer (http://localhost:52964/packages/flutter/src/gestures/tap.dart.lib.js:166:23)
at tap.TapGestureRecognizer.new.handleEvent (http://localhost:52964/packages/flutter/src/gestures/recognizer.dart.lib.js:426:16)
at pointer_router.PointerRouter.new.[_dispatch] (http://localhost:52964/packages/flutter/src/gestures/pointer_router.dart.lib.js:86:9)
at http://localhost:52964/packages/flutter/src/gestures/pointer_router.dart.lib.js:112:26
    at LinkedMap.new.forEach (http://localhost:52964/dart_sdk.js:27679:11)
at pointer_router.PointerRouter.new.[_dispatchEventToRoutes] …

我有 4 个小textFormField部件。一旦用户完成第一个文本字段，我想textField自动关注下一个文本字段。Flutter 有没有办法做到这一点？任何人请分享，提前感谢:)