Question

I am trying to create my first hello world described here:

http://developer.chrome.com/trunk/apps/first_app.html

but I got error
There were warnings when trying to install this extension:
Permission ‘app.window’ is unknown or URL pattern is malformed.

also, I had to add –enable-platform-apps to my shortcut to chrome…

What did I do wrong?

Thank you
edit:
this is manifest.json

{
  "name": "Hello World!",
  "description": "My first packaged app.",
  "manifest_version": 2,
  "version": "0.1",
  "app": {
    "background": {
      "scripts": ["background.js"]
    }
  },
  "permissions": ["experimental", "app.window"],
  "icons": { "16": "calculator-16.png", "128": "calculator-128.png" }
}

chrome is 21.0.1180.88

Answer 1

You are using the current stable release — Chrome 21 — which does not include the app.* APIs. If you want to use those APIs before they are incorporated into the stable release, you can develop your app using Chrome Canary, which is several version ahead of the stable release.

Note that the URL you reference has /trunk in it, indicating that it is documentation for the most recent (unstable) version of Chrome.