我安装了 http://developer.android.com/sdk/index.html 的ADT包昨天，我在下面的一个基本的Hello World教程。我创建了一个新的Andr​​oid应用程序项目用 MainActivity 的空白活动。所得到的项目有一个空的的src 文件夹和空水库\布局文件夹。有一个在创文件夹 R.java 文件，但它没有提及 MainActivity 。这是SDK的经理说：我已经安装了

I installed the ADT bundle from http://developer.android.com/sdk/index.html yesterday, and I was following a basic Hello World tutorial. I created a new Android Application Project with a Blank Activity named MainActivity. The resulting project has an empty src folder and empty res\layout folder. There is a R.java file in the gen folder but it has no reference to MainActivity. This is what the SDK manager says I have installed

我也试过手动右键创建活动点击的src 文件夹，然后将Android的活动，但是当我打完成的创建向导，没有任何反应。没有人有任何线索，这是怎么回事？我错过安装的重要组成部分还是什么？

I also tried manually creating an activity by right clicking the src folder and going to Android Activity, but when I hit Finish on the creation wizard, nothing happens. Does anyone have any clues as to what's going on? Did I miss a key component to install or something?

推荐答案

如果您更新到Android SDK工具版本22.6，您需要更新DDMS工具和插件。

If you updated to Android SDK Tools version 22.6, you are required to Update DDMS Tools and Plugins.

进入帮助菜单栏 - >安装新软件，并安装（这将更新）  网址： https://dl-ssl.google.com/android/eclipse/

Go to "Help Menu Bar" -> "Install New software" and install (this will update it) url: https://dl-ssl.google.com/android/eclipse/

另外需要更新的开发者工具和NDK插件以最新的版本。 此步骤是对我有用的，并且工作。

Also update "Developer Tools" and "NDK Plugins" to latest Version. This steps is useful for me and worked also.