Getting Error Message Error: spawn EACCES using IONIC Framework

I am trying to learn ionic cross platform tool. i have setup thing required for example application ionic serve is working fine but when i try to run sudo ionic build android or sudo ionic run/emulate android it returns with error message.

Error: spawn EACCES
    at exports._errnoException (util.js:746:11)
    at ChildProcess.spawn (child_process.js:1162:11)
    at Object.exports.spawn (child_process.js:995:9)
    at Object.exports.spawn (/usr/lib/node_modules/cordova/node_modules/cordova-lib/src/cordova/superspawn.js:103:31)
    at runScriptViaChildProcessSpawn (/usr/lib/node_modules/cordova/node_modules/cordova-lib/src/hooks/HooksRunner.js:189:23)
    at runScript (/usr/lib/node_modules/cordova/node_modules/cordova-lib/src/hooks/HooksRunner.js:132:16)
    at /usr/lib/node_modules/cordova/node_modules/cordova-lib/src/hooks/HooksRunner.js:115:20
    at _fulfilled (/usr/lib/node_modules/cordova/node_modules/q/q.js:787:54)
    at self.promiseDispatch.done (/usr/lib/node_modules/cordova/node_modules/q/q.js:816:30)
    at Promise.promise.promiseDispatch (/usr/lib/node_modules/cordova/node_modules/q/q.js:749:13)

i am unable to understand what does its mean. i have google this thing but after appling all of those solutions i got same error. i ll highly thankful if any one can tell me what is going wrong with me.