(Android build error) Can not sign application Unable to sign application; please provide passwords!

第一次使用Unity编译打包成apk时，出现如下bug：

(Android build error) Can not sign application Unable to sign application; please provide passwords!

具体解决方法：

http://www.technoreply.com/creating-an-android-keystore-on-unity/

其实就是在菜单栏中Edit >Project Settings > Player and select theAndroidtab设置一下签名文件及密码就可以了，这里也可以选择Unsigned（debug）模式。