I am a beginner of the ionic.
When I use "ionic build android". It occurs the following errors:

But I had already installed android-22 and the latest SDK flatform-toos.
How to fixed it?

I am a beginner of the ionic.
When I use "ionic build android". It occurs the following errors:

But I had already installed android-22 and the latest SDK flatform-toos.
How to fixed it?
