Android 颤振图像\u选择器无法与PlatformException一起工作
我正在使用图像选择器:^0.6.1+2,单击按钮时调用getImage()函数:Android 颤振图像\u选择器无法与PlatformException一起工作,android,image,flutter,dart,Android,Image,Flutter,Dart,我正在使用图像选择器:^0.6.1+2,单击按钮时调用getImage()函数: File _image; Future getImage() async { var image = await ImagePicker.pickImage(source: ImageSource.camera); setState(() { _image = image; }); } 当我点击按钮时,总是会出现这个错误 E/flutter (17542): [ERROR:flutter/lib/ui/u
File _image;
Future getImage() async {
var image = await ImagePicker.pickImage(source: ImageSource.camera);
setState(() {
_image = image;
});
}
当我点击按钮时,总是会出现这个错误
E/flutter (17542): [ERROR:flutter/lib/ui/ui_dart_state.cc(148)] Unhandled Exception: PlatformException(error, Attempt to invoke virtual method 'android.content.res.XmlResourceParser android.content.pm.ProviderInfo.loadXmlMetaData(android.content.pm.PackageManager, java.lang.String)' on a null object reference, null)
E/flutter (17542): #0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:564:7)
E/flutter (17542): #1 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:316:33)
E/flutter (17542): <asynchronous suspension>
E/flutter (17542): #2 ImagePicker.pickImage (package:image_picker/image_picker.dart:59:40)
E/flutter (17542): <asynchronous suspension>
E/flutter (17542): #3 _GetLocationPageState.getImage (package:baladity/formulaire_reclamation.dart:102:35)
E/flutter (17542): <asynchronous suspension>
E/flutter (17542): #4 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:635:14)
E/flutter (17542): #5 _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:711:32)
E/flutter (17542): #6 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:182:24)
E/flutter (17542): #7 TapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:365:11)
E/flutter (17542): #8 TapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:312:7)
E/flutter (17542): #9 GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:156:27)
E/flutter (17542): #10 _WidgetsFlutterBinding&BindingBase&GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:222:20)
E/flutter (17542): #11 _WidgetsFlutterBinding&BindingBase&GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:198:22)
E/flutter (17542): #12 _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:156:7)
E/flutter (17542): #13 _WidgetsFlutterBinding&BindingBase&GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:102:7)
E/flutter (17542): #14 _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:86:7)
E/flutter (17542): #15 _rootRunUnary (dart:async/zone.dart:1136:13)
E/flutter (17542): #16 _CustomZone.runUnary (dart:async/zone.dart:1029:19)
E/flutter (17542): #17 _CustomZone.runUnaryGuarded (dart:async/zone.dart:931:7)
E/flutter (17542): #18 _invoke1 (dart:ui/hooks.dart:250:10)
E/flutter (17542): #19 _dispatchPointerDataPacket (dart:ui/hooks.dart:159:5)
E/flatter(17542):[ERROR:flatter/lib/ui/ui\u dart\u state.cc(148)]未处理的异常:PlatformException(错误,尝试在空对象引用上调用虚拟方法“android.content.res.XmlResourceParser android.content.pm.ProviderInfo.loadXmlMetaData(android.content.pm.PackageManager,java.lang.String)”,null)
E/flatter(17542):#0 StandardMethodCodec.decodeEnvelope(包:flatter/src/services/message_编解码器。dart:564:7)
E/颤振(17542):#1 MethodChannel.invokeMethod(包:颤振/src/services/platform_channel.dart:316:33)
E/颤振(17542):
E/颤振(17542):#2 ImagePicker.pickImage(包装:image_picker/image_picker.dart:59:40)
E/颤振(17542):
E/Flatter(17542):#3"GetLocationPageState.getImage(包装:baladity/formulaire"回收。dart:102:35)
E/颤振(17542):
E/颤振(17542):#4(InkResponseEstate.)(handleTap)(包装:颤振/src/材料/墨水)井。省道:635:14)
E/颤振(17542):#5#InkResponseEstate.build。(包装:颤振/src/材料/墨水井。省道:711:32)
E/flatter(17542):#6手势识别器.invokeCallback(包:flatter/src/signatures/recognizer.dart:182:24)
E/flatter(17542):#7 TapGestureRecognitor.#检查(软件包:flatter/src/signatures/tap.dart:365:11)
E/flatter(17542):#8 TapGestureRecognitor.AcceptPirse(包:flatter/src/pirses/tap.dart:312:7)
E/flatter(17542):#9 GestureArenaManager.sweep(包:flatter/src/signatures/arena.dart:156:27)
E/flatter(17542):#10#WidgetsFlutterBinding&BindingBase&GestureBinding.handleEvent(包:flatter/src/signatures/binding.dart:222:20)
E/flatter(17542):11 _WidgetsFlutterBinding&BindingBase&GestureBinding.dispatchEvent(包:flatter/src/signatures/binding.dart:198:22)
电子/颤振(17542):#12#WidgetsFlutterBinding&BindingBase&GestureBinding.#手持指针事件(包装:颤振/src/手势/绑定。省道:156:7)
电子/颤振(17542):#13#WidgetsFlutterBinding&BindingBase&GestureBinding.#flushPointerEventQueue(包装:颤振/src/手势/binding.省道:102:7)
电子/颤振(17542):#14#WidgetsFlutterBinding&BindingBase&GestureBinding.#HandlePointerData数据包(包:颤振/src/手势/binding.省道:86:7)
E/颤振(17542):#15 35;根运行单位(dart:async/zone.dart:1136:13)
E/flatter(17542):#16 _CustomZone.runUnary(dart:async/zone.dart:1029:19)
E/flatter(17542):#17 _CustomZone.runUnaryGuarded(dart:async/zone.dart:931:7)
E/颤振(17542):#18_调用1(省道:ui/挂钩。省道:250:10)
E/flatter(17542):#19 dispatchPointerDataPacket(dart:ui/hooks.dart:159:5)
谢谢,你必须清理你的应用缓存,然后重新安装,或者用try-catch块包装代码,然后调试它。上周我也遇到了同样的问题,无效缓存和重新启动在Android Studio上对我不起作用,所以我只是使用
flatter create project_name
创建了新项目,然后将pubspec.yaml和lib目录复制到新目录,然后运行flatter pub get
,这一问题已经解决,现在我正在使用image\u picker
小部件获取相机和图库。同样,对于使用ImageSource.camera
或ImageSource.gallery
,您必须在android或iOS中允许存储权限。