大佬教程收集整理的这篇文章主要介绍了在 null 上调用了 getter 'path',大佬教程大佬觉得挺不错的,现在分享给大家,也给大家做个参考。
当我没有选择视频时出现此错误,我该如何处理该错误?
════════ Exception caught by Widgets library ═══════════════════════════════════
The following NoSuchMethodError was thrown building Builder(dirty):
The getter 'path' was called on null.
Receiver: null
TrIEd calling: path
The relevant error-causing Widget was
MaterialApp
lib/main.dart:49
When the exception was thrown,this was the stack
#0 Object.noSuchMethod (dart:core-patch/object_patch.dart:54:5)
#1 _OnlymeinebeitraegeState.pickvIDeo.<anonymous closure> (package:wichtigdenyady/seitenleiste/onlymeinebeitr%C3%A4ge.dart:359:39)
#2 MaterialPageRoute.buildContent
package:Flutter/…/material/page.dart:54
#3 MaterialRouteTransitionmixin.buildPage
package:Flutter/…/material/page.dart:107
#4 _ModalScopestate.build.<anonymous closure>.<anonymous closure>
package:Flutter/…/Widgets/routes.dart:840
...
═════════════════════════════════════════
这是代码
pickvIDeo(Imagesource srC) async {
final vIDeo = await ImagePicker().getVIDeo(source: src);
Navigationservice.instance.navigatetoRoute(
MaterialPageRoute(builder: (context) {
return CreateVIDeo(file(vIDeo.path),vIDeo.path,src);
}),);
}
voID showPickOptionsDialog(
BuildContext context,) {
showDialog(
context: context,builder: (context) => AlertDialog(
content:
column(mainAxisSize: MainAxisSize.min,children: <Widget>[
ListTile(
title: Text("Pick from gallery"),onTap: () {
pickvIDeo(Imagesource.gallery);
Navigator.pop(context);
},),ListTile(
title: Text("Take a VIDeo"),onTap: () {
pickvIDeo(Imagesource.camera);
Navigator.pop(context);
},])));
}
pickvIDeo 方法中抛出的错误希望任何人都可以提供帮助,如果您需要更多信息,请发表评论并告诉我哪些信息。另外,如果您需要更多代码,也请发表评论并告诉我您需要哪个部分
选择后检查:
final video = await ImagePicker().getVideo(source: src);
if(video != null) {
Navigationservice.instance.navigateToRoute(
MaterialPageRoute(builder: (context) {
return CreateVideo(File(video.path),video.path,src);
}),);
}else{
//do something else,like show user a message
}
以上是大佬教程为你收集整理的在 null 上调用了 getter 'path'全部内容,希望文章能够帮你解决在 null 上调用了 getter 'path'所遇到的程序开发问题。
如果觉得大佬教程网站内容还不错,欢迎将大佬教程推荐给程序员好友。
本图文内容来源于网友网络收集整理提供,作为学习参考使用,版权属于原作者。
如您有任何意见或建议可联系处理。小编QQ:384754419,请注明来意。