Apr 3, 2015 - Android Studio Rename Package

In Android Studio, you can do this:

For example, if you want to change com.example.app to my.awesome.game, then:

  1. In your Project pane, click on the little gear icon ( Gears icon )

  2. Uncheck / De-select the Compact Empty Middle Packages option

Compact Empty Middle Packages

  1. Your package directory will now be broken up in individual directories

  2. Individually select each directory you want to rename, and:

  • Right-click it
  • Select Refactor
  • Click on Rename
  • In the Pop-up dialog, click on Rename Package instead of Rename Directory
  • Enter the new name and hit Refactor
  • Allow a minute to let Android Studio update all changes
  • Note: When renaming com in Android Studio, it might give a warning. In such case, select Rename All


  1. Now open your Gradle Build File (build.gradle - Usually app or mobile). Update the applicationId to your new Package Name and Sync Gradle, if it hasn't already been updated automatically:


  1. Done! Anyways, Android Studio needs to make this process a little simpler.

Apr 3, 2015 - 版本号 versionCode, versionName


android:versionCode表示该软件的版本号,对用户是不可见的,它必须是一个int型的整数,它的大小代表该软件版本升级过多少次,因此每次发布新版本该值都会+1,如Android:versionCode = ”62″ ,代表此软件已经发布过62次了。





Mar 10, 2015 - 背景像素点点的效果

方法: background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAE8AAABPCAYAAACqNJiGAAAAGXRFW…ZY+Hkh2wfu5/EX/rbp56Wb7236eWk+/LyQbXTeV5H+FWAA7eqC0D2aO2cAAAAASUVORK5CYII=);

效果: background-image dot

renfer URL: http://javascript.ruanyifeng.com/tool/phantomjs.html