Android Jni Error

I'm developping a cordova / phonegap android plugin to list wifi around the device. Into my plugin class, i want to use the WifiManager to do the work. Here my execute method :

Solution 1:

Have a look at https://groups.google.com/forum/?fromgroups=#!msg/phonegap/U5U5X07bEUI/TG4VppzazfQJ - it might be a permissions issue.