eclipse打包apk时提示the zipalign tool was not found in the sdk解决方法

导入的项目修改好打包发布的时候提示the zipalign tool was not found in the sdk，将build-tools升级到20就好了。

原文：

I fixed it by installing Android SDK Build-tools 20:

In Eclipse → Pull Down Menu → Window → Android
SDK Manager, check Android SDK Build-tools Rev. 20, then click the Install n package(s)… button
to start installing.

I had the same problem. And to fix it, I copy the Zipalign file from sdk/build-tools/android-4.4W folder to sdk/tools/

Edited: Since Google updated SDK for Android, new build-tools does fix this problem. So I encouraged everyone to update to Android SDK Build-tools 20 as
suggested by Pang in the post below.

参考：http://stackoverflow.com/questions/24442213/cannot-find-zip-align-when-publishing-app/24446579#24446579

如何更新到build-tools20点这里