Flutter 颤振与振动；航海家及；图像采集器：为什么我可以进入下一页？查找停用的小部件'；他的祖先是不安全的
这是我的getImage函数。拍完照片后，我会剪掉它。然后我进入下一页。它工作得很好。但是今天，我犯了一个错误。为什么呢？我不明白。我应该更新我的颤振还是什么Flutter 颤振与振动；航海家及；图像采集器：为什么我可以进入下一页？查找停用的小部件'；他的祖先是不安全的,flutter,dart,exception,navigator,imagepicker,Flutter,Dart,Exception,Navigator,Imagepicker,这是我的getImage函数。拍完照片后，我会剪掉它。然后我进入下一页。它工作得很好。但是今天，我犯了一个错误。为什么呢？我不明白。我应该更新我的颤振还是什么 getImage(ImageSource source, BuildContext context) async { this.setState(() { _inProcess = true; }); // File image = await ImagePicker.pickImage(source
getImage(ImageSource source, BuildContext context) async {
this.setState(() {
_inProcess = true;
});
// File image = await ImagePicker.pickImage(source: source);
final _picker = ImagePicker();
PickedFile image = await _picker.getImage(source: source);
// File file_image = File(image.path);
if (image != null) {
// Remove crop attribute if we don't want to resize the image
File cropped = await ImageCropper.cropImage(
sourcePath: image.path,
aspectRatio: CropAspectRatio(ratioX: 1, ratioY: 1),
compressQuality: 100, // 100 means no compression
maxWidth: 700,
maxHeight: 700,
compressFormat: ImageCompressFormat.jpg,
androidUiSettings: AndroidUiSettings(
toolbarColor: primaryColor,
toolbarTitle: "RPS Cropper",
statusBarColor: primaryColor,
backgroundColor: Colors.white,
//toolbarWidgetColor: primaryColor,
activeControlsWidgetColor: primaryColor,
//dimmedLayerColor: primaryColor,
cropFrameColor: primaryColor,
cropGridColor: primaryColor,
),
);
print('======= After Cropped =======');
this.setState(() {
_selectedFile = cropped;
//_selectedFile = File(image.path);
_inProcess = false;
//_showDelete = true;
isTaken = true;
});
if (_selectedFile != null) {
print('====== Leaving Image Evaluation =====');
// Navigator.pop(context);
this.setState(() {
_inProcess = false;
});
await Navigator.pushReplacement(
context,
MaterialPageRoute(
builder: (context) => UploadPictureInfo(
image: _selectedFile,
),
),
);
print('After pop and push Image Evaluation');
} else {
//Navigator.of(context).pop();
this.setState(() {
//_selectedFile = cropped;
_inProcess = false;
// //_showDelete = true;
// isTaken = true;
});
}
} else {
this.setState(() {
_inProcess = false;
});
}
}
I/BitmapCropTask( 9329): Should crop: true
I/flutter ( 9329): ======= After Cropped =======
I/flutter ( 9329): ====== Leaving Image Evaluation =====
E/flutter ( 9329): [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: Looking up a deactivated widget's ancestor is unsafe.
E/flutter ( 9329): At this point the state of the widget's element tree is no longer stable.
E/flutter ( 9329): To safely refer to a widget's ancestor in its dispose() method, save a reference to the ancestor by calling dependOnInheritedWidgetOfExactType() in the widget's didChangeDependencies() method.
E/flutter ( 9329): #0 Element._debugCheckStateIsActiveForAncestorLookup.<anonymous closure> (package:flutter/src/widgets/framework.dart:3904:9)
E/flutter ( 9329): #1 Element._debugCheckStateIsActiveForAncestorLookup (package:flutter/src/widgets/framework.dart:3918:6)
E/flutter ( 9329): #2 Element.findAncestorStateOfType (package:flutter/src/widgets/framework.dart:4037:12)
E/flutter ( 9329): #3 Navigator.of (package:flutter/src/widgets/navigator.dart:2216:40)
E/flutter ( 9329): #4 Navigator.pushReplacement (package:flutter/src/widgets/navigator.dart:1876:22)
E/flutter ( 9329): #5 _ImageEvaluationState.getImage (package:PhotoEarn/screens/camera/image_evaluation.dart:199:25)
E/flutter ( 9329): <asynchronous suspension>
E/flutter ( 9329): #6 _ImageEvaluationState.build.<anonymous closure>.<anonymous closure> (package:PhotoEarn/screens/camera/image_evaluation.dart:474:33)
E/flutter ( 9329): #7 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:993:19)
E/flutter ( 9329): #8 _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:1111:38)
E/flutter ( 9329): #9 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:183:24)
E/flutter ( 9329): #10 TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:598:11)
E/flutter ( 9329): #11 BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:287:5)
E/flutter ( 9329): #12 BaseTapGestureRecognizer.handlePrimaryPointer (package:flutter/src/gestures/tap.dart:222:7)
E/flutter ( 9329): #13 PrimaryPointerGestureRecognizer.handleEvent (package:flutter/src/gestures/recognizer.dart:476:9)
E/flutter ( 9329): #14 PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:77:12)
E/flutter ( 9329): #15 PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:122:9)
E/flutter ( 9329): #16 _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:377:8)
E/flutter ( 9329): #17 PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:120:18)
E/flutter ( 9329): #18 PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:106:7)
E/flutter ( 9329): #19 GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:370:19)
E/flutter ( 9329): #20 GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:350:22)
E/flutter ( 9329): #21 RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:266:11)
E/flutter ( 9329): #22 GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:305:7)
E/flutter ( 9329): #23 GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:240:7)
E/flutter ( 9329): #24 GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:213:7)
E/flutter ( 9329): #25 _rootRunUnary (dart:async/zone.dart:1206:13)
E/flutter ( 9329): #26 _CustomZone.runUnary (dart:async/zone.dart:1100:19)
E/flutter ( 9329): #27 _CustomZone.runUnaryGuarded (dart:async/zone.dart:1005:7)
E/flutter ( 9329): #28 _invoke1 (dart:ui/hooks.dart:265:10)
E/flutter ( 9329): #29 _dispatchPointerDataPacket (dart:ui/hooks.dart:174:5)
E/flutter ( 9329):
D/EGL_emulation( 9329): eglMakeCurrent: 0xddd058e0: ver 3 0 (tinfo 0xdcaa8ec0)
D/EGL_emulation( 9329): eglMakeCurrent: 0xddd19e80: ver 3 0 (tinfo 0xdcab1c40)
D/EGL_emulation( 9329): eglMakeCurrent: 0xddd19e80: ver 3 0 (tinfo 0xdcab1c40)
D/EGL_emulation( 9329): eglMakeCurrent: 0xddd058e0: ver 3 0 (tinfo 0xdcaa8ec0)
D/eglCodecCommon( 9329): setVertexArrayObject: set vao to 0 (0) 53 0
D/EGL_emulation( 9329): eglMakeCurrent: 0xddd19e80: ver 3 0 (tinfo 0xdcab1c40)
I/BitmapCropTask（9329）：是否应裁剪：true
I/颤振（9329）：=========裁剪后=======
I/颤振（9329）：=======离开图像评估=====
E/flatter（9329）：[错误：flatter/lib/ui/ui_dart_state.cc（177）]未处理的异常：查找停用小部件的祖先是不安全的。
E/flatter（9329）：此时小部件元素树的状态不再稳定。
E/flatter（9329）：为了在dispose（）方法中安全地引用小部件的祖先，请通过在小部件的didChangeDependencies（）方法中调用dependOnInheritedWidgetOfExactType（）来保存对祖先的引用。
E/颤振（9329）：#0元素。_调试检查状态为激活的组件。（包：flatter/src/widgets/framework.dart:3904:9）
E/flatter（9329）：#1个元素。_debugCheckStateIsActiveForAncestorLookup（包：flatter/src/widgets/framework.dart:3918:6）
E/flatter（9329）：#2 Element.findAncestorStateOfType（包：flatter/src/widgets/framework.dart:4037:12）
E/flatter（9329）：#3 Navigator.of（包：flatter/src/widgets/Navigator.dart:2216:40）
E/flatter（9329）：#4 Navigator.pushReplacement（包：flatter/src/widgets/Navigator.dart:1876:22）
电子/颤振（9329）：#5 ImageEvaluationState.getImage（软件包：PhotoEarn/screens/camera/image_evaluation.dart:199:25）
E/颤振（9329）：
E/颤振（9329）：#6#图像评估状态。构建。。（包装：PhotoEarn/屏幕/相机/图像评估。dart:474:33）
E/颤振（9329）：#7(InkResponseEstate.)把手（包装：颤振/src/材料/墨水(尺寸：993:19)
E/颤振（9329）：#8#InkResponse.build。（包装：颤振/src/材料/墨水井。省道：1111:38）
E/flatter（9329）：#9手势识别器.invokeCallback（包：flatter/src/signatures/recognizer.dart:183:24）
E/颤振（9329）：#10 TapGestureRecognitor.handleTapUp（包：颤振/src/手势/tap.dart:598:11）
电子/颤振（9329）：#11基本手势识别器。#检查（包装：颤振/src/手势/tap.省道：287:5）
E/flatter（9329）：#12 BaseTapgestureRecognitor.handlePrimaryPointer（包：flatter/src/signatures/tap.dart:222:7）
E/颤振（9329）：#13 PrimaryPointerTestureRecognizer.handleEvent（包：颤振/src/手势/识别器。dart:476:9）
电子/颤振（9329）：#14点外部程序。#调度（包：颤振/src/手势/指针路由器。dart:77:12）
E/颤振（9329）：#15点外部。#调度事件路线。（包装：颤振/src/signatures/pointer_router.省道：122:9）
E/flatter（9329）：#16 LinkedHashMapMixin.forEach（dart:collection patch/compact_hash.dart:377:8）
E/flatter（9329）：#17点路由器。#调度事件路由（包：flatter/src/signatures/pointer#路由器。dart:120:18）
E/flatter（9329）：#18 PointerRouter.route（包：flatter/src/signatures/pointer_router.dart:106:7）
E/flatter（9329）：#19 GestureBinding.handleEvent（包：flatter/src/signatures/binding.dart:370:19）
E/flatter（9329）：#20 GestureBinding.dispatchEvent（包：flatter/src/signatures/binding.dart:350:22）
E/flatter（9329）：#21 renderbinding.dispatchEvent（包：flatter/src/rendering/binding.dart:266:11）
E/flatter（9329）：#22 GestureBinding.handlePointerEvent（包：flatter/src/signatures/binding.dart:305:7）
E/颤振（9329）：#23手势绑定。(U flushPointerEventQueue（包装：颤振/src/手势/绑定。省道：240:7）
电子/颤振（9329）：#24手势绑定。"手持指针数据包（包：颤振/src/手势/binding.dart:213:7）
E/颤振（9329）：#25 _根运行单位（dart:async/zone.dart:1206:13）
E/flatter（9329）：#26 _CustomZone.runUnary（dart:async/zone.dart:1100:19）
E/颤振（9329）：#27 _CustomZone.runUnaryGuarded（dart:async/zone.dart:1005:7）
E/颤振（9329）：#28 _调用1（省道：ui/钩子。省道：265:10）
E/颤振（9329）：#29 dispatchPointerDataPacket（dart:ui/hooks.dart:174:5）
E/颤振（9329）：
D/EGL_仿真（9329）：eglMakeCurrent:0xddd058e0:ver 3 0（tinfo 0xdcaa8ec0）
D/EGL_仿真（9329）：eglMakeCurrent:0xddd19e80:ver 3 0（tinfo 0xdcab1c40）
D/EGL_仿真（9329）：eglMakeCurrent:0xddd19e80:ver 3 0（tinfo 0xdcab1c40）
D/EGL_仿真（9329）：eglMakeCurrent:0xddd058e0:ver 3 0（tinfo 0xdcaa8ec0）
D/eglCodecCommon（9329）：setVertexArrayObject:将vao设置为0（0）53 0
D/EGL_仿真（9329）：eglMakeCurrent:0xddd19e80:ver 3 0（tinfo 0xdcab1c40）
Navigator.of(context).pushReplacement(
MaterialPageRoute(
builder: (context) => UploadPictureInfo(
image: _selectedFile,
),
),
);