OpenCV Error: Assertion failed (ssize.width > 0 && ssize.height > 0) in cv::resize, file C...
=== The following assertion was thrown building ProductDetails(dirty, dependencies: [MediaQuery, _LocalizationsScope-[GlobalKey#b4d92]], state: _ProductDetailsState#05c18):'package:flutter/src/widgets/fade_in_image.dart': Failed assertion: line234pos15:'image != null': is no...
Bilateral filter error, Assertion failed ((src.type() == CV_8UC1 || src.type() == CV_8UC3) && src.data != dst.data) 一、概述 这个异常是在用OpenCV做高斯双边滤波做图像美化的时候出现的异常。这个异常信息的意思是图像类型不对。高斯双边滤波只允许CV_8UC1或者CV_8UC3即只能加载单通多的灰色...
针对你提到的“flutter failed assertion: line 1972 pos 12: 'hassize'”错误,这通常表明在Flutter的渲染过程中,某个RenderBox对象在布局阶段没有被赋予正确的大小信息。下面我将从几个方面来分析和解决这个问题: 1. 错误含义及可能原因 含义:hassize断言失败意味着在布局过程中,某个RenderBox(渲染盒)没有获得足够的...
Steps to reproduce when When Reopening a Page and Hot Reload show Flutter Error: Failed assertion: line 5882 pos 12: '!_debugLocked': is not true. Expected results . Actual results . Code sample Code sample class RoomViewBloc extends Sta...
Another exception was thrown: Assertion failed: file:///Users/j/Documents/flutter/packages/flutter/lib/src/rendering/box.dart:2164:12 Code sample import'package:flutter/material.dart'; import'package:auto_size_text/auto_size_text.dart';classChipIssueExampleextendsStatelessWidget{constChipIssueExample(...
大体意思就是Expanded控件只能用在Flex子组件里面,不能用在RenderObjectWidget子组件内。我们进去源码可以看到,Row、Column都是Flex的子组件,而Padding是SingleChildRenderObjectWidget的子组件。那么问:从百度翻译的内容看出来的?答案:否。我在Flutter中文网的flutter实战电子书中看到的 ...
试试这个：
报错:Failed assertion: line 1785 pos 12: 'hasSize' 原因:1. SingleChildScrollView 嵌套 ListView、GridView报错 ,SingleChildScrollView 和 ListView 都有滚动 属性physics 他们默认是都是可以滚动的 2. SingleChildScrollView 添加了Expanded或者Flexible 解决方法: 1. 增加shrinkWrap: true 和 physics: NeverScrollabl...
使用assert断言是学习python一个非常好的习惯，python assert 断言句语格式及用法很简单。在没完善一个程序之前，我们不知道程序在哪里会出错，与其让它在运行最崩溃，不如在出现错误条件时就崩溃，这时候就需要assert断言的帮助。本文主要是讲assert断言的基础知识。