当我尝试点击Inkwell时，我得到以下空值错误。我不知道我在哪里得到错误，我无法解决这个问题。我尝试了很多方法，但都不起作用。错误：
======== Exception caught by gesture ===============================================================
The following TypeErrorImpl was thrown while handling a gesture:
Unexpected null value.
When the exception was thrown, this was the stack:
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 294:49 throw_
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/operations.dart 855:63 nullCheck
packages/get/get_navigation/src/extension_navigation.dart 36:39 ExtensionBottomSheet.bottomSheet
packages/agriplus/Registration%20Screens/Signup%2520Screens/signup_screen_5.dart 48:9 imagePickerOption
packages/flutter/src/material/ink_well.dart 1154:21 handleTap
packages/flutter/src/gestures/recognizer.dart 275:24 invokeCallback
packages/flutter/src/gestures/tap.dart 654:11 handleTapUp
packages/flutter/src/gestures/tap.dart 311:5 [_checkUp]
packages/flutter/src/gestures/tap.dart 244:7 handlePrimaryPointer
packages/flutter/src/gestures/recognizer.dart 630:9 handleEvent
packages/flutter/src/gestures/pointer_router.dart 98:12 [_dispatch]
packages/flutter/src/gestures/pointer_router.dart 143:9 <fn>
dart-sdk/lib/_internal/js_dev_runtime/private/linked_hash_map.dart 21:13 forEach
packages/flutter/src/gestures/pointer_router.dart 141:17 [_dispatchEventToRoutes]
packages/flutter/src/gestures/pointer_router.dart 127:7 route
packages/flutter/src/gestures/binding.dart 488:19 handleEvent
packages/flutter/src/gestures/binding.dart 468:14 dispatchEvent
packages/flutter/src/rendering/binding.dart 333:11 dispatchEvent
packages/flutter/src/gestures/binding.dart 413:7 [_handlePointerEventImmediately]
packages/flutter/src/gestures/binding.dart 376:5 handlePointerEvent
packages/flutter/src/gestures/binding.dart 323:7 [_flushPointerEventQueue]
packages/flutter/src/gestures/binding.dart 292:9 [_handlePointerDataPacket]
lib/_engine/engine/platform_dispatcher.dart 1319:13 invoke1
lib/_engine/engine/platform_dispatcher.dart 303:5 invokeOnPointerDataPacket
lib/_engine/engine/pointer_binding.dart 168:39 [_onPointerData]
lib/_engine/engine/pointer_binding.dart 791:20 <fn>
lib/_engine/engine/pointer_binding.dart 720:14 <fn>
lib/_engine/engine/pointer_binding.dart 317:16 loggedHandler
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/operations.dart 574:37 _checkAndCall
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/operations.dart 579:39 dcall
Handler: "onTap"
Recognizer: TapGestureRecognizer#c150a
debugOwner: GestureDetector
state: possible
won arena
finalPosition: Offset(320.8, 411.0)
finalLocalPosition: Offset(20.8, 15.1)
button: 1
sent tap down
====================================================================================================字符串
相关代码部分：这是我在上面创建的函数：
File? pickedImage;
void imagePickerOption() {
Get.bottomSheet(
SingleChildScrollView(
child: ClipRRect(
borderRadius: const BorderRadius.only(
topLeft: Radius.circular(10.0),
topRight: Radius.circular(10.0),
),
child: Container(
color: Colors.white,
height: 250,
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
const Text(
"Select Image From",
style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
textAlign: TextAlign.center,
),
const SizedBox(
height: 10,
),
ElevatedButton.icon(
onPressed: () async {
pickImage(
ImageSource.camera,
);
},
icon: const Icon(
Icons.camera,
color: Colors.white,
),
label: const Text(
"CAMERA",
style: TextStyle(
color: Colors.white,
),
),
),
const SizedBox(
height: 10,
),
ElevatedButton.icon(
onPressed: () async {
pickImage(
ImageSource.gallery,
);
},
icon: const Icon(
Icons.image,
color: Colors.white,
),
label: const Text(
"GALLERY",
style: TextStyle(
color: Colors.white,
),
),
),
const SizedBox(
height: 10,
),
ElevatedButton.icon(
onPressed: () {
Get.back();
},
icon: const Icon(
Icons.close,
color: Colors.white,
),
label: const Text(
"CANCEL",
style: TextStyle(
color: Colors.white,
),
),
),
],
),
),
),
),
),
);
}
void pickImage(ImageSource imageType) async {
try {
final photo = await ImagePicker().pickImage(source: imageType);
if (photo == null) return;
final tempImage = File(photo.path);
setState(() {
pickedImage = tempImage;
});
Get.back();
} catch (error) {
debugPrint(error.toString());
}
}型
当我点击编辑图标（墨水井）我得到错误：
Stack(
children: [
Container(
width: 120,
height: 120,
decoration: BoxDecoration(
border: Border.all(
width: 4,
color: Theme.of(context).scaffoldBackgroundColor,
),
boxShadow: [
BoxShadow(
spreadRadius: 2,
blurRadius: 10,
color: Colors.black.withOpacity(0.1),
offset: const Offset(0, 10),
)
],
shape: BoxShape.circle,
),
child: ClipOval(
child: Image.network(
profilePicture,
width: 120,
height: 120,
fit: BoxFit.cover,
),
),
),
Positioned(
bottom: 0,
right: 0,
child: InkWell(
onTap: imagePickerOption,
child: Container(
height: 40,
width: 40,
decoration: BoxDecoration(
shape: BoxShape.circle,
border: Border.all(
width: 4,
color:
Theme.of(context).scaffoldBackgroundColor,
),
color: const Color(0XFF00B251),
),
child: const Icon(
Icons.edit_outlined,
color: Colors.white,
),
),
),
),
],
),型
1条答案
按热度按时间kkbh8khc1#
Get.bottomSheet被视为一个路由，需要Navigator将BuildContext推入堆栈。与showModalBottomSheet必须提供上下文作为参数不同，Get通过GetMaterialApp提供上下文。示例原生材质
字符串
extension_navigation.dart第36行get：^4.6.6库的
Get.bottomSheetcontext null错误的解决方案型