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转载—— android 瀑布流的实现详解,附源码

参考自:https://github.com/dodola/android_waterfall,因为原来的代码封装不好,所以,我根据源码的思路,重新写了一遍,所以有了现在这个项目:https://github.com/youxilua/waterfall4android原作者表示:实现支持URL的方式加载图片作者:游戏...

android取得所在位置的经纬度

android提供了LocationManager来取得位置,用LocationListener来监听位置的变化先做一些初始化工作:/**latitudeandlongitudeofcurrentlocation*/publicstaticStringmLat="";publicstaticStri...

Android:自己定义输入法(输入password时防止第三方窃取)

对于Android用户而言。一般都会使用第三方的输入法。但是,在输入password时(尤其是支付相关的password),使用第三方输入法有极大的安全隐患。眼下非常多网银类的APP和支付宝等软件在用户输入password时,都会弹出自己定义的输入法而不是直接使用系统输入法。本文介绍的就是怎样实现一个简单的自己定义输入...

【Python基础】random 的高级玩法

方式一:importrandomxing=['赵','钱','孙','李','周','吴','郑','王','冯','陈','褚','卫','蒋','沈','韩','杨','朱','秦','尤','许','何','吕','施','张','孔','曹','严','华','金','魏','陶','姜','戚','谢','邹...

【python基础】利用pandas处理Excel数据

参考:https://www.cnblogs.com/liulinghua90/p/9935642.html1:pandas依赖处理Excel的xlrd模块,所以我们需要提前安装这个,安装命令是:pipinstallxlrd2:步骤1准备好了之后,我们就可以开始安装pandas了,安装命令是:pipinstallpan...

Controlling Scope and Lifetime

https://autofaccn.readthedocs.io/en/latest/lifetime/index.htmlAgreatplacetostartlearningaboutAutofacscopeandlifetimeisinNickBlumhardt’sAutofaclifetimeprim...

What is the difference between Clustered and Non-Clustered Indexes in SQL Server?

Fromthediscussionwefindfollowingdifferencesbetweenclusteredandnon-clusteredindexes.Therecanbeonlyoneclusteredindexpertable.However,youcancreatemultiplenon-clust...

What is the difference between Shrink Database and File?

Simply...DBCCShrinkDatabase():shrinkallfilesDBCCShrinkFile():justonefileForexample,youmayhavealogbackupissueandit'sgrownoutofcontrolsoyourunDBCCShrinkFile().You...

Enabling IIS and required IIS components on Windows Server

TolearnhowtoenableIISandtherequiredIIScomponentsonWindowsServer2012/2012R2,seetheinstructionsbelow.OpenServerManagerandclickManage>AddRolesandFeatures.ClickN...

Why you need to understand garbage collection

I’vebeeninterviewinglotsofC#developersrecently,andoneofmystockquestionsis“howdoesthe.NETgarbagecollectorknowwhenyou’vefinishedusinganobject?&r...

What is the difference between UNION and UNION ALL?

UNIONremovesduplicaterecords(whereallcolumnsintheresultsarethesame),UNIONALLdoesnot.ThereisaperformancehitwhenusingUNIONinsteadofUNIONALL,sincethedatabaseserver...

mysql: Error Codes and Messages

AppendixB.ErrorCodesandMessagesTableofContentsB.1.ServerErrorCodesandMessagesB.2.ClientErrorCodesandMessagesThisappendixliststheerrorsthatmayappearwhenyoucallMy...

微信自动抢红包android实现

 2018年02月01日16:09:06阅读数:1757在领导发红包的时候,看到有些同事在1s、2s抢到红包,为什么他们能够这么快?一定是“开挂”的想法立马浮现出来。做一个程序猿,为什么不自己写一个呢?借助Android的辅助功能的AccessibilityService服务就能够做到...

xfs mount and repair

sudomount-txfs/dev/sdb1/storage  2017年12月03日10:14:19阅读数:2749首先尝试mount和umount文件系统,以便重放日志,修复文件系统,如果不行,再进行如下操作。做此步之前确保分区处于umount状态xfs_check/dev/sdd(盘符);e...
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