1.安装下载地址：http://www.oracle.com/technetwork/developertools/sqldeveloper/downloads/index098778.html(https://www.oschina.net/action/GoToLink?urlhttp%3A%2F%2Fwww.oracle.co

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1、在在层级未知情况下通过递归查找子物体，这个主要是用于UI的的层级查找中2、代码：1usingSystem.Collections;2usingSystem.Collections.Generic;3usingU

一、在android中休眠3s钟有2中方法：1、SystemClock.sleep(3000);2、Thread.sleep(3000);二、通过系统源码区别1、SystemClock.sleep(longms)源码：publicstaticvoidsleep(longms){

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LivePlayer网页直播、点播播放器资源下载：https://www.liveqing.com/docs/download/LivePlayer.html(https://www.oschina.net/action/GoToLink?urlhttps%3A%2F%2Fwww.liveqing.com%