Unhandled Exception: NoSuchMethodError: Class 'String' has no instance getter 'path'
Unhandled Exception: NoSuchMethodError: Class 'String' has no instance getter 'path'
我尝试通过 multi_image_picker 依赖和使用多部分请求上传多张图片，
我在第一个屏幕上上传图像并在另一个屏幕上获取它们并尝试通过 API post，
而是在 LogCat 中出现错误，如下所示：
I/flutter ( 6514): Electronics images --
I/flutter ( 6514): [/data/user/0/com.etroc.etroc/cache/IMG_1611380223006.png, /data/user/0/com.etroc.etroc/cache/IMG_1611380223017.png, /data/user/0/com.etroc.etroc/cache/IMG_1611380223027.png]
I/flutter ( 6514): /data/user/0/com.etroc.etroc/cache/IMG_1611380223006.png
E/flutter ( 6514): [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: NoSuchMethodError: Class 'String' has no instance getter 'path'.
E/flutter ( 6514): Receiver: "/data/user/0/com.etroc.etroc/cache/IMG_1611380223006.png"
E/flutter ( 6514): Tried calling: path
E/flutter ( 6514): #0 Object.noSuchMethod (dart:core-patch/object_patch.dart:51:5)
E/flutter ( 6514): #1 _PaymentforAdsState.submitpayment (package:etroc/Screens/paymentForPostAds.dart:191:35)
E/flutter ( 6514): #2 _PaymentforAdsState.build.<anonymous closure> (package:etroc/Screens/paymentForPostAds.dart:1024:21)
E/flutter ( 6514): #3 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:993:19)
E/flutter ( 6514): #4 _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:1111:38)
E/flutter ( 6514): #5 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:183:24)
E/flutter ( 6514): #6 TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:598:11)
E/flutter ( 6514): #7 BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:287:5)
E/flutter ( 6514): #8 BaseTapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:259:7)
E/flutter ( 6514): #9 GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:157:27)
E/flutter ( 6514): #10 GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:362:20)
E/flutter ( 6514): #11 GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:338:22)
E/flutter ( 6514): #12 RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:267:11)
E/flutter ( 6514): #13 GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:295:7)
E/flutter ( 6514): #14 GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:240:7)
E/flutter ( 6514): #15 GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:213:7)
E/flutter ( 6514): #16 _rootRunUnary (dart:async/zone.dart:1206:13)
E/flutter ( 6514): #17 _CustomZone.runUnary (dart:async/zone.dart:1100:19)
E/flutter ( 6514): #18 _CustomZone.runUnaryGuarded (dart:async/zone.dart:1005:7)
E/flutter ( 6514): #19 _invoke1 (dart:ui/hooks.dart:265:10)
E/flutter ( 6514): #20 _dispatchPointerDataPacket (dart:ui/hooks.dart:174:5)
E/flutter ( 6514):
这是我的APIpost代码-
submitpayment(BuildContext context,List files)async{
print("submitpayment");
print(widget.categoryname);
if(widget.categoryname.toString()=='Electronics'){
print("Electronics images --");
print(files);
var uri = Uri.parse(
"api_url_link");
var request = new http.MultipartRequest("POST", uri);
for (var file in files) {
print(file);
String fileName = file.path.split('/').last;
var stream = new http.ByteStream(DelegatingStream.typed(file.openRead()));
var length = await file.length();
var multipartFileSign =
new http.MultipartFile('resplist', stream, length, filename: fileName);
request.files.add(multipartFileSign);
}
Map<String, String> headers = {
"Accept": "application/json",
};
request.headers.addAll(headers);
request.fields['adTitle'] = widget.adtitle;
request.fields['yearofPurchase'] = widget.yearofpur;
request.fields['processor'] = widget.processor;
request.fields['frontCamera'] = widget.frontcamera;
request.fields['backCamera'] = widget.backcamera;
request.fields['sellingPrice'] = widget.sellingprice;
request.fields['isNegotiate'] = widget.negotiate;
request.fields['description'] = widget.description;
request.fields['color'] = widget.color;
request.fields['productId'] = widget.prodname;
request.fields['brandId'] = widget.brandid;
request.fields['productConditionId'] = widget.prodcondition;
request.fields['customerId'] = widget.customer;
request.fields['mobileNumber'] = widget.cotact;
request.fields['inActivePeriod'] = _inActivePeriod;
request.fields['adsTypeId'] = _adsTypeId;
request.fields['adsTypeName'] = _adsTypeName;
request.fields['localityId'] = widget.locality;
request.fields['subCategoryId'] = widget.sub_catId;
request.fields['categoryId'] = widget.categoryid;
var response = await request.send();
print(response.statusCode);
response.stream.transform(utf8.decoder).listen((value) {
// Navigator.pop(context);
if (response.statusCode == 200) {
var res = jsonDecode(value);
print("payment done - "+res);
} else {
print("error in submit");
}
});
}
}
这是我上传多张图片的代码（第一个屏幕）-
String fileName;
List<Asset> images= List<Asset>();
Future<void> pickImages() async {
setState(() {
images = null;
});
List resultList;
String error;
try {
resultList = await MultiImagePicker.pickImages(
maxImages: 4,
);
} on PlatformException catch (e) {
error = e.message;
}
if (!mounted) return;
setState(() {
images = resultList;
if (error == null) _error = 'No Error Dectected';
});
}
Future<File> getImageFileFromAsset(String path) async {
final file = File(path);
return file;
}
productInfo() async {
files.clear();
for (int i = 0; i < images.length; i++) {
var path2 = await FlutterAbsolutePath.getAbsolutePath(images[i].identifier);
//var path = await images[i].filePath;
print(path2);
// var file = await getImageFileFromAsset(path2);
// print(file);
var file = await getImageFileFromAsset(path2);
// var base64Image = base64Encode(file.readAsBytesSync());
// print(base64Image);
// files.add(base64Image);
// var data = {
// //“files”: files,
// };
print(file);
_img.add(path2);
print(_img);
}
return showDialog(
context: context,
builder: (BuildContext context) {
return ProductInfo(
custid:widget.user,
contact:widget.mobid,
catId:widget.category_id,
sub_catId: widget.sub_CategoryId,
sub_catname: widget.sub_CategoryName,
imgList: _img,
categoryName: widget.category_Name,
);
});
}
Widget setupAlertDialoadContainer() {
return Container(
width: 300.0,
child: Padding(
padding: const EdgeInsets.all(10.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Text("You can add upto 4 Images",
style: TextStyle(color: Colors.black,fontWeight: FontWeight.w400, fontSize: 12),
textAlign: TextAlign.center,
),
Row(
mainAxisAlignment: MainAxisAlignment.start,
children: [
Column(children: [
Image.asset("assets/cameraicon_red.png", height: 80,width: 80,),
SizedBox(height: 10,),
RaisedButton(
//onPressed:chooseFile ,
onPressed:pickImages ,
child: Text('UPLOAD',style: TextStyle(fontSize: 14, color: Colors.black),),
),
],),
SizedBox(width: 5,),
images == null
? Container()
: SizedBox(
height: 100.0,
width: 180,
child: new ListView.builder(
scrollDirection: Axis.horizontal,
itemBuilder: (BuildContext context, int index) =>
new Padding(
padding: const EdgeInsets.all(5.0),
child : AssetThumb(
asset: images[index],
height: 200,
width: 200,
)
),
itemCount: images.length,
),
),
],
),
SizedBox(
height: 25,
),
Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
GestureDetector(onTap: () { productInfo();
},
child: Container(
alignment: Alignment.center, width: 80,
padding: EdgeInsets.symmetric(vertical: 5),
decoration: BoxDecoration(color: Colors.white, border: Border.all(color: primary)),
child: Text("NEXT", style: TextStyle(fontSize: 14, color: primary),),
),
),
GestureDetector(onTap: () {Navigator.pop(context);},
child: Container(
alignment: Alignment.center,
width: 80,
padding: EdgeInsets.symmetric(vertical: 5),
decoration: BoxDecoration(
color: Colors.white,
border: Border.all(color: primary)
),
child: Text("CANCEL", style: TextStyle(fontSize: 14, color: primary),),
),
),
],
),
],
),
),
);
}
@override
Widget build(BuildContext context) {
return Dialog(
elevation: 0, insetPadding: EdgeInsets.all(10),
backgroundColor: Colors.transparent,
child: contentBox(context),
);
}
contentBox(context){
return AlertDialog(
backgroundColor: Colors.white,
contentPadding: EdgeInsets.only(top: 10.0),
content: setupAlertDialoadContainer(),
);
}
}
这是我的 UI 代码，其中我 post 图像（第二个屏幕）-
Widget build(BuildContext context) {
height = MediaQuery.of(context).size.height;
width = MediaQuery.of(context).size.width;
return Scaffold(
appBar: AppBar(
backgroundColor: primary,
automaticallyImplyLeading: true,
centerTitle: true,
elevation: 0.0,
),
body:SingleChildScrollView(
child: Column(
children: [
Container(
decoration: BoxDecoration(color: Colors.grey[200]),
height: height/1.5,
child: GridView.builder(
shrinkWrap: true,
itemCount:_list.length==null?2:_list.length,
gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
childAspectRatio: MediaQuery.of(context).size.width /
MediaQuery.of(context).size.height /
0.7,
crossAxisCount: 2,
crossAxisSpacing: 10,
mainAxisSpacing: 10),
padding: EdgeInsets.only(left: 15, right: 15, bottom: 10, top: 10),
itemBuilder: (context, index) {
return InkWell(
onTap: () {
},
child: Container(
padding: const EdgeInsets.all(8.0),
decoration: BoxDecoration(
color: Colors.white,
border: Border.all(color: primary),
borderRadius: BorderRadius.all(Radius.circular(15))),
child: Padding(
padding: const EdgeInsets.only(top: 8.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
Container(
width: 180,
height: 30,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(8.0),
border: Border.all(color: primary),
),
child: Center(
child: Text(_list[index].adsTypeName==null?"Free":_list[index].adsTypeName,
style: TextStyle(
fontWeight: FontWeight.w500,
fontSize: 12),
),
),
),
SizedBox(height: 20),
Flexible(
child: Text(_list[index].price==null?"0":_list[index].price,
style: TextStyle(
fontWeight: FontWeight.w500,
fontSize: 16),
),
),
SizedBox(height: 20),
Flexible(
child: Text(_list[index].activePeriod==null
? 0 :_list[index].activePeriod.toString(),
maxLines: 2,
style: TextStyle(
fontWeight: FontWeight.w500,
fontSize: 16),
),
),
SizedBox(height: 20),
Radio(
value: _list[index].adsTypeName,
groupValue: checkbox,
onChanged: ( value){
setState(() {
_inActivePeriod=_list[index].inActivePeriod;
_adsTypeId=_list[index].adsTypeId;
_adsTypeName=_list[index].adsTypeName;
checkbox=value;
});
},
)
],
),
),
),
);
},
),
),
Align(
alignment: Alignment.center,
child: Container(
margin: EdgeInsets.symmetric(horizontal: 25,vertical: 25),
alignment: Alignment.center,
//width: MediaQuery.of(context).size.width,
padding: EdgeInsets.symmetric(vertical: 25,horizontal: 12),
child: RaisedButton(
color: Colors.red,
onPressed: (){
submitpayment(context, widget.imgList);
},
child: Text('SUBMIT',style: TextStyle(
fontSize: 14,
color: Colors.white)
),
),
),
),
],
),
),
);
}
}
有人可以帮助我吗？因为我头晕找不到这个错误的解决方法:)
您的文件变量是 String，而不是 File。检查 files 集合创建并传递到具有类型定义 (List<File>) 的 submitpayment 列表，以便在编译时检查此问题。
我尝试通过 multi_image_picker 依赖和使用多部分请求上传多张图片， 我在第一个屏幕上上传图像并在另一个屏幕上获取它们并尝试通过 API post， 而是在 LogCat 中出现错误，如下所示：
I/flutter ( 6514): Electronics images --
I/flutter ( 6514): [/data/user/0/com.etroc.etroc/cache/IMG_1611380223006.png, /data/user/0/com.etroc.etroc/cache/IMG_1611380223017.png, /data/user/0/com.etroc.etroc/cache/IMG_1611380223027.png]
I/flutter ( 6514): /data/user/0/com.etroc.etroc/cache/IMG_1611380223006.png
E/flutter ( 6514): [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: NoSuchMethodError: Class 'String' has no instance getter 'path'.
E/flutter ( 6514): Receiver: "/data/user/0/com.etroc.etroc/cache/IMG_1611380223006.png"
E/flutter ( 6514): Tried calling: path
E/flutter ( 6514): #0 Object.noSuchMethod (dart:core-patch/object_patch.dart:51:5)
E/flutter ( 6514): #1 _PaymentforAdsState.submitpayment (package:etroc/Screens/paymentForPostAds.dart:191:35)
E/flutter ( 6514): #2 _PaymentforAdsState.build.<anonymous closure> (package:etroc/Screens/paymentForPostAds.dart:1024:21)
E/flutter ( 6514): #3 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:993:19)
E/flutter ( 6514): #4 _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:1111:38)
E/flutter ( 6514): #5 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:183:24)
E/flutter ( 6514): #6 TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:598:11)
E/flutter ( 6514): #7 BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:287:5)
E/flutter ( 6514): #8 BaseTapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:259:7)
E/flutter ( 6514): #9 GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:157:27)
E/flutter ( 6514): #10 GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:362:20)
E/flutter ( 6514): #11 GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:338:22)
E/flutter ( 6514): #12 RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:267:11)
E/flutter ( 6514): #13 GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:295:7)
E/flutter ( 6514): #14 GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:240:7)
E/flutter ( 6514): #15 GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:213:7)
E/flutter ( 6514): #16 _rootRunUnary (dart:async/zone.dart:1206:13)
E/flutter ( 6514): #17 _CustomZone.runUnary (dart:async/zone.dart:1100:19)
E/flutter ( 6514): #18 _CustomZone.runUnaryGuarded (dart:async/zone.dart:1005:7)
E/flutter ( 6514): #19 _invoke1 (dart:ui/hooks.dart:265:10)
E/flutter ( 6514): #20 _dispatchPointerDataPacket (dart:ui/hooks.dart:174:5)
E/flutter ( 6514):
这是我的APIpost代码-
submitpayment(BuildContext context,List files)async{
print("submitpayment");
print(widget.categoryname);
if(widget.categoryname.toString()=='Electronics'){
print("Electronics images --");
print(files);
var uri = Uri.parse(
"api_url_link");
var request = new http.MultipartRequest("POST", uri);
for (var file in files) {
print(file);
String fileName = file.path.split('/').last;
var stream = new http.ByteStream(DelegatingStream.typed(file.openRead()));
var length = await file.length();
var multipartFileSign =
new http.MultipartFile('resplist', stream, length, filename: fileName);
request.files.add(multipartFileSign);
}
Map<String, String> headers = {
"Accept": "application/json",
};
request.headers.addAll(headers);
request.fields['adTitle'] = widget.adtitle;
request.fields['yearofPurchase'] = widget.yearofpur;
request.fields['processor'] = widget.processor;
request.fields['frontCamera'] = widget.frontcamera;
request.fields['backCamera'] = widget.backcamera;
request.fields['sellingPrice'] = widget.sellingprice;
request.fields['isNegotiate'] = widget.negotiate;
request.fields['description'] = widget.description;
request.fields['color'] = widget.color;
request.fields['productId'] = widget.prodname;
request.fields['brandId'] = widget.brandid;
request.fields['productConditionId'] = widget.prodcondition;
request.fields['customerId'] = widget.customer;
request.fields['mobileNumber'] = widget.cotact;
request.fields['inActivePeriod'] = _inActivePeriod;
request.fields['adsTypeId'] = _adsTypeId;
request.fields['adsTypeName'] = _adsTypeName;
request.fields['localityId'] = widget.locality;
request.fields['subCategoryId'] = widget.sub_catId;
request.fields['categoryId'] = widget.categoryid;
var response = await request.send();
print(response.statusCode);
response.stream.transform(utf8.decoder).listen((value) {
// Navigator.pop(context);
if (response.statusCode == 200) {
var res = jsonDecode(value);
print("payment done - "+res);
} else {
print("error in submit");
}
});
}
}
这是我上传多张图片的代码（第一个屏幕）-
String fileName;
List<Asset> images= List<Asset>();
Future<void> pickImages() async {
setState(() {
images = null;
});
List resultList;
String error;
try {
resultList = await MultiImagePicker.pickImages(
maxImages: 4,
);
} on PlatformException catch (e) {
error = e.message;
}
if (!mounted) return;
setState(() {
images = resultList;
if (error == null) _error = 'No Error Dectected';
});
}
Future<File> getImageFileFromAsset(String path) async {
final file = File(path);
return file;
}
productInfo() async {
files.clear();
for (int i = 0; i < images.length; i++) {
var path2 = await FlutterAbsolutePath.getAbsolutePath(images[i].identifier);
//var path = await images[i].filePath;
print(path2);
// var file = await getImageFileFromAsset(path2);
// print(file);
var file = await getImageFileFromAsset(path2);
// var base64Image = base64Encode(file.readAsBytesSync());
// print(base64Image);
// files.add(base64Image);
// var data = {
// //“files”: files,
// };
print(file);
_img.add(path2);
print(_img);
}
return showDialog(
context: context,
builder: (BuildContext context) {
return ProductInfo(
custid:widget.user,
contact:widget.mobid,
catId:widget.category_id,
sub_catId: widget.sub_CategoryId,
sub_catname: widget.sub_CategoryName,
imgList: _img,
categoryName: widget.category_Name,
);
});
}
Widget setupAlertDialoadContainer() {
return Container(
width: 300.0,
child: Padding(
padding: const EdgeInsets.all(10.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Text("You can add upto 4 Images",
style: TextStyle(color: Colors.black,fontWeight: FontWeight.w400, fontSize: 12),
textAlign: TextAlign.center,
),
Row(
mainAxisAlignment: MainAxisAlignment.start,
children: [
Column(children: [
Image.asset("assets/cameraicon_red.png", height: 80,width: 80,),
SizedBox(height: 10,),
RaisedButton(
//onPressed:chooseFile ,
onPressed:pickImages ,
child: Text('UPLOAD',style: TextStyle(fontSize: 14, color: Colors.black),),
),
],),
SizedBox(width: 5,),
images == null
? Container()
: SizedBox(
height: 100.0,
width: 180,
child: new ListView.builder(
scrollDirection: Axis.horizontal,
itemBuilder: (BuildContext context, int index) =>
new Padding(
padding: const EdgeInsets.all(5.0),
child : AssetThumb(
asset: images[index],
height: 200,
width: 200,
)
),
itemCount: images.length,
),
),
],
),
SizedBox(
height: 25,
),
Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
GestureDetector(onTap: () { productInfo();
},
child: Container(
alignment: Alignment.center, width: 80,
padding: EdgeInsets.symmetric(vertical: 5),
decoration: BoxDecoration(color: Colors.white, border: Border.all(color: primary)),
child: Text("NEXT", style: TextStyle(fontSize: 14, color: primary),),
),
),
GestureDetector(onTap: () {Navigator.pop(context);},
child: Container(
alignment: Alignment.center,
width: 80,
padding: EdgeInsets.symmetric(vertical: 5),
decoration: BoxDecoration(
color: Colors.white,
border: Border.all(color: primary)
),
child: Text("CANCEL", style: TextStyle(fontSize: 14, color: primary),),
),
),
],
),
],
),
),
);
}
@override
Widget build(BuildContext context) {
return Dialog(
elevation: 0, insetPadding: EdgeInsets.all(10),
backgroundColor: Colors.transparent,
child: contentBox(context),
);
}
contentBox(context){
return AlertDialog(
backgroundColor: Colors.white,
contentPadding: EdgeInsets.only(top: 10.0),
content: setupAlertDialoadContainer(),
);
}
}
这是我的 UI 代码，其中我 post 图像（第二个屏幕）-
Widget build(BuildContext context) {
height = MediaQuery.of(context).size.height;
width = MediaQuery.of(context).size.width;
return Scaffold(
appBar: AppBar(
backgroundColor: primary,
automaticallyImplyLeading: true,
centerTitle: true,
elevation: 0.0,
),
body:SingleChildScrollView(
child: Column(
children: [
Container(
decoration: BoxDecoration(color: Colors.grey[200]),
height: height/1.5,
child: GridView.builder(
shrinkWrap: true,
itemCount:_list.length==null?2:_list.length,
gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
childAspectRatio: MediaQuery.of(context).size.width /
MediaQuery.of(context).size.height /
0.7,
crossAxisCount: 2,
crossAxisSpacing: 10,
mainAxisSpacing: 10),
padding: EdgeInsets.only(left: 15, right: 15, bottom: 10, top: 10),
itemBuilder: (context, index) {
return InkWell(
onTap: () {
},
child: Container(
padding: const EdgeInsets.all(8.0),
decoration: BoxDecoration(
color: Colors.white,
border: Border.all(color: primary),
borderRadius: BorderRadius.all(Radius.circular(15))),
child: Padding(
padding: const EdgeInsets.only(top: 8.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
Container(
width: 180,
height: 30,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(8.0),
border: Border.all(color: primary),
),
child: Center(
child: Text(_list[index].adsTypeName==null?"Free":_list[index].adsTypeName,
style: TextStyle(
fontWeight: FontWeight.w500,
fontSize: 12),
),
),
),
SizedBox(height: 20),
Flexible(
child: Text(_list[index].price==null?"0":_list[index].price,
style: TextStyle(
fontWeight: FontWeight.w500,
fontSize: 16),
),
),
SizedBox(height: 20),
Flexible(
child: Text(_list[index].activePeriod==null
? 0 :_list[index].activePeriod.toString(),
maxLines: 2,
style: TextStyle(
fontWeight: FontWeight.w500,
fontSize: 16),
),
),
SizedBox(height: 20),
Radio(
value: _list[index].adsTypeName,
groupValue: checkbox,
onChanged: ( value){
setState(() {
_inActivePeriod=_list[index].inActivePeriod;
_adsTypeId=_list[index].adsTypeId;
_adsTypeName=_list[index].adsTypeName;
checkbox=value;
});
},
)
],
),
),
),
);
},
),
),
Align(
alignment: Alignment.center,
child: Container(
margin: EdgeInsets.symmetric(horizontal: 25,vertical: 25),
alignment: Alignment.center,
//width: MediaQuery.of(context).size.width,
padding: EdgeInsets.symmetric(vertical: 25,horizontal: 12),
child: RaisedButton(
color: Colors.red,
onPressed: (){
submitpayment(context, widget.imgList);
},
child: Text('SUBMIT',style: TextStyle(
fontSize: 14,
color: Colors.white)
),
),
),
),
],
),
),
);
}
}
有人可以帮助我吗？因为我头晕找不到这个错误的解决方法:)
您的文件变量是 String，而不是 File。检查 files 集合创建并传递到具有类型定义 (List<File>) 的 submitpayment 列表，以便在编译时检查此问题。