Flutter 颤振:平台异常(没有可用的摄像头,没有可拍照的摄像头,空,空)
伙计们!我面对的是这个相机版本。它发生在我合并我的项目之后。它说没有可用的相机,但当时它运行良好。请看一看Flutter 颤振:平台异常(没有可用的摄像头,没有可拍照的摄像头,空,空),flutter,android-camera,android-permissions,imagepicker,Flutter,Android Camera,Android Permissions,Imagepicker,伙计们!我面对的是这个相机版本。它发生在我合并我的项目之后。它说没有可用的相机,但当时它运行良好。请看一看 E/flutter: [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: PlatformException(no_available_camera, No cameras available for taking pictures., null, null) #0 StandardMetho
E/flutter: [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: PlatformException(no_available_camera, No cameras available for taking pictures., null, null)
#0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:582:7)
#1 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:159:18)
<asynchronous suspension>
#2 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:332:12)
#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 _ImageEvaluationState.getImage (package:PhotoEarn/screens/camera/image_evaluation.dart:201:38)
#7 _ImageEvaluationState.build.<anonymous closure> (package:PhotoEarn/screens/camera/image_evaluation.dart:1099:33)
#8 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:993:19)
#9 _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:1111:38)
#10 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:183:24)
#11 TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:598:11)
#12 BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:287:5)
#13 BaseTapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:259:7)
#14 GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:157:27)
#15 GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:362:20)
#16 GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:338:22)
#17 RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:267:11)
#18 GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:295:7)
#19 GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:240:7)
#20 GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:213:7)
#21 _rootRunUnary (dart:async/zone.dart:1206:13)
#22 _CustomZone.runUnary (dart:async/zone.dart:1100:19)
#23 _CustomZone.runUnaryGuarded (dart:async/zone.dart:1005:7)
#24 _invoke1 (dart:ui/hooks.dart:265:10)
#25 _dispatchPointerDataPacket (dart:ui/hooks.dart:174:5)
E/flatter:[错误:flatter/lib/ui/ui\u dart\u state.cc(177)]未处理的异常:PlatformException(没有可用的摄像头,没有可拍照的摄像头,null,null)
#0 StandardMethodCodec.decodeEnvelope(包:flatter/src/services/message_codecs.dart:582:7)
#1方法通道。_invokeMethod(包:颤振/src/services/platform_通道。dart:159:18)
#2 MethodChannel.invokeMethod(包:颤振/src/services/platform\u通道。dart:332:12)
#3 MethodChannelImagePicker.pickImagePath(包:图像\u选择器\u平台\u接口/src/方法\u通道/方法\u通道\u图像\u选择器。dart:62:21)
#4 MethodChannelImagePicker.pickImage(包:映像\u picker\u平台\u接口/src/方法\u通道/方法\u通道\u映像\u picker.dart:30:25)
#5 ImagePicker.getImage(包:image\u picker/image\u picker.dart:101:21)
#6_ImageEvaluationState.getImage(包:PhotoEarn/screens/camera/image_evaluation.dart:201:38)
#7_ImageEvaluationState.build。(包装:PhotoEarn/屏幕/相机/图像评估。dart:1099:33)
#8 InkResponseState.handleTap(包装:颤振/src/材料/墨水井。省道:993:19)
#9_inkrestate.build。(包装:颤振/src/材料/墨水井。省道:1111:38)
#10 GestureRecognizer.invokeCallback(包:flatter/src/signatures/recognizer.dart:183:24)
#11 TapGestureRecognizer.handleTapUp(包:颤振/src/手势/tap.dart:598:11)
#12 BaseTapgestureRecognitor._检查(包:颤振/src/手势/tap.dart:287:5)
#13 BaseTapgestureRecognitor.AcceptSignature(包:颤振/src/signatures/tap.dart:259:7)
#14 GestureArenaManager.sweep(包:颤振/src/手势/arena.dart:157:27)
#15 GestureBinding.handleEvent(包:flift/src/signatures/binding.dart:362:20)
#16 GestureBinding.dispatchEvent(包:flatter/src/signatures/binding.dart:338:22)
#17 RenderBinding.dispatchEvent(包:flatter/src/rendering/binding.dart:267:11)
#18手势绑定._handlePointerEvent(包:flift/src/signatures/binding.dart:295:7)
#19手势绑定。_flushPointerEventQueue(包装:颤振/src/手势/binding.dart:240:7)
#20手势绑定。_handlepointer数据包(包:flift/src/signatures/binding.dart:213:7)
#21_rootrunaunary(dart:async/zone.dart:1206:13)
#22_CustomZone.runUnary(dart:async/zone.dart:1100:19)
#23_CustomZone.runUnaryGuarded(dart:async/zone.dart:1005:7)
#24_invoke1(省道:ui/hooks.dart:265:10)
#25_dispatchPointerDataPacket(dart:ui/hooks.dart:174:5)
请查看此错误消息并在这方面提供帮助。我期待着你们所有人的来信。提前感谢您。从Github,有两种方法可以解决此问题
flatter-upgrade
更新至最新的flatter版本,然后运行应用程序。如果不起作用,则使用flatterchannelmaster
切换到flatter主频道并运行应用程序compileSdkVersion
和targetSdkVersion
设置为29如果您的CompileSDK版本和TargetSDK版本为30(或以上),则将以下内容添加到您的Android清单中:
<uses-permission android:name="android.permission.QUERY_ALL_PACKAGES"/>
这应该可以解决您的问题。我不确定添加
QUERY\u ALL\u包是否正确,因为目标是仅访问摄像头。如果targetSdkVersion=30
(或更高),将
添加到AndroidManifest.xml
看起来是一个更好的解决方案,如下所示-
...
我面临同样的问题。对于android,您需要在AndroidManifest.xml文件中添加摄像头权限和查询所有软件包权限,如下所示:
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.QUERY_ALL_PACKAGES"/>
我猜这个问题已经在Flatter的主分支中解决了,尝试切换到主分支,然后再试一次为什么它不能与compileSdkVersion和targetSdkVersion 30一起工作?我真的不知道。第二种方法有效,但我们必须使用30目标,如果修复请更新。我们如何设置这两个版本??请告诉我这是我的工作,谢谢!清单通常位于android/app/src/main的哪个文件夹中。对于那些刚开始手动编辑清单的人来说,这个标签直接放在下面,这是迄今为止最好、最安全的解决方案。它工作得很好。我不知道为什么它不被接受,但它确实比谷歌禁止的查询所有软件包好得多
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.QUERY_ALL_PACKAGES"/>