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本文转自:http://www.cnblogs.com/yyangblog/archive/2011/01/07/1929657.html 问题概述: 在导入一个app后提示如下错误: “Error generating final archive: Debug Certificate expired on 10/09/18 16:30” 原因分析: android要求所有的程序必须有签名,否则就不会安装该程序. 在我们开发过程中,adt使用debug keystore,在 preference…

在开发的时候难免会导入项目,那么怎么经常会遇到这个错误: [2014-04-28 09:22:28 - XXXX] Unable to resolve target 'android-18' target 后面的版本可以有很多中,这是因为你导入的程序和你的开发环境版本不一样导致,或者是你导入的jar包没有被引入进来,我们可以这样做: 第一步:如下图在project中找到 Android然后将对应的jar包选上.   ok,是不是可以了,不对还是不行,那么有可能是你没引入Jar包,如下图在proj…

老实说笔者学习 Go 的时间并不长,积淀也不深厚,这次因缘巧合,同组的同事以前是上海大学的开源社区推动者之一,同时我们也抱着部分宣传公司和技术分享的意图,更进一步的,也是对所学做一个总结,所以拟定了这次分享.另外与会的同学大多都是大二大三的"萌新",考虑到受众水平和技术分享的性质,所以实际上这次分享涉及到的知识点都相对基础,当然为了寓教于乐,本人也十分讨厌着重介绍基础语法时可能引起的枯燥,所以加了少少的私货,并且也针对 1.11 及之前版本中或优雅,或局限的特性做了发散性的讲解. 总而…

Regex reg = new Regex(@"^(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*))$"); if (!reg.IsMatch(txtorgqty.Text)) "^\d+$" //非负整数(正整数 + 0) "^[0-9]*[1-9][0-9]*$" //正整数 "^((-\d+)|(0+))$" //非正…

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