如何解决相机屏幕的两个实例在onTap上弹出两次，抖动应用程序冻结
当我按下onTap功能打开相机屏幕时，它会弹出，然后在它上面弹出另一个实例，然后它冻结，除非停止运行并重新运行，否则我无法退出应用程序它，我得到这个错误：
StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:572:7)
#1 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:161:18)
<asynchronous suspension>
#2 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:334:12)
#3 MethodChannelImagePicker.pickImagePath (package:image_picker_platform_interface/src/method_channel/method_channel_image_picker.dart:62:21)
#4 MethodChannelImagePicker.pickImage (package:image_picker_platform_interface/src/method_channel/method_channel_image_picker.dart:30:25)
#5 ImagePicker.getImage (package:image_picker/image_picker.dart:101:21)
#6 _CameraScreenState.captureImageWithCamera (package:link_me/pages/CameraScreen.dart:395:37)
#7 _CameraScreenState.build (package:link_me/pages/CameraScreen.dart:284:28)
#8 StatefulElement.build (package:flutter/src/widgets/framework.dart:4663:28)
#9 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4546:15)
#10 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4719:11)
#11 Element.rebuild (package:flutter/src/widgets/framework.dart:4262:5)
#12 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2667:33)
#13 WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:866:20)
#14 RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:286:5)
#15 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1117:15)
#16 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1056:9)
#17 SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:972:5)
#18 _rootRun (dart:async/zone.dart:1190:13)
#19 _CustomZone.run (dart:async/zone.dart:1093:19)
#20 _CustomZone.runGuarded (dart:async/zone.dart:997:7)
#21 _invoke (dart:ui/hooks.dart:253:10)
#22 _drawFrame (dart:ui/hooks.dart:211:3)
2020-09-15 19:08:28.010210-0400 Runner[3651:653470] Warning: Attempt to present <UIImagePickerController: 0x12ed36800> on <UIImagePickerController: 0x12e90cc00> while a presentation is in progress!
2020-09-15 19:08:28.870127-0400 Runner[3651:653470] [Camera] [CAMCaptureEngine] Received a session runtime error notification : Error Domain=AVFoundationErrorDomain Code=-11800 "The operation could not be completed" UserInfo={NSLocalizedFailureReason=An unknown error occurred (-12780),NSLocalizedDescription=The operation could not be completed,NSUnderlyingError=0x2803c7900 {Error Domain=NSOSStatusErrorDomain Code=-12780 "(null)"}}
2020-09-15 19:08:28.870415-0400 Runner[3651:653470] [Camera] [CAMCaptureEngine] Performing recovery from error: Error Domain=AVFoundationErrorDomain Code=-11800 "The operation could not be completed" UserInfo={NSLocalizedFailureReason=An unknown error occurred (-12780),NSUnderlyingError=0x2803c7900 {Error Domain=NSOSStatusErrorDomain Code=-12780 "(null)"}}
2020-09-15 19:08:28.870681-0400 Runner[3651:653470] [Camera] [CAMCaptureEngine] Attempting to recover from a session runtime error by restarting the AVCaptureSession...
2020-09-15 19:08:28.871065-0400 Runner[3651:653470] [Camera] [CAMCaptureEngine] Received a session runtime error notification during recovery : Error Domain=AVFoundationErrorDomain Code=-11800 "The operation could not be completed" UserInfo={NSLocalizedFailureReason=An unknown error occurred (-12780),NSUnderlyingError=0x280319080 {Error Domain=NSOSStatusErrorDomain Code=-12780 "(null)"}}
2020-09-15 19:08:28.871287-0400 Runner[3651:653470] [Camera] [CAMCaptureEngine] Encountered another AVCaptureSession runtime error during session recovery… (Error Domain=AVFoundationErrorDomain Code=-11800 "The operation could not be completed" UserInfo={NSLocalizedFailureReason=An unknown error occurred (-12780),NSUnderlyingError=0x280319080 {Error Domain=NSOSStatusErrorDomain Code=-12780 "(null)"}})
2020-09-15 19:08:38.316440-0400 Runner[3651:653470] [Camera] Unable to generate a valid BKSHIDEventDeferringToken from a view's window ((null)),not deferring camera case events for SBSHardwareButtonService
这是我的获取图像功能。我不确定如何解决此问题。
captureImageWithCamera() async {
final pickedFile = await picker.getImage(
source: ImageSource.camera,maxHeight: 680,maxWidth: 970,);
if (pickedFile != null) {
//imageFile = await cropImage(imageFile);
setState(() {
file = File(pickedFile.path);
});
await controller.dispose();
}
}
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