Spring for android RestTemplate object instantiation failed - spring-android

Question

I am using spring for android in order to communicate with an existing RestAPI service. I am following this tutorial :
http://spring.io/guides/gs/consuming-rest-android/
I already have my android app, and I integrated this HttpRequestTask in one of my activities
private class HttpRequestTask extends AsyncTask<Void, Void, Greeting> {
protected Greeting doInBackground(Void... params) {
try {
final String url = "http://rest-service.guides.spring.io/greeting";
RestTemplate restTemplate = new RestTemplate();
restTemplate.getMessageConverters().add(new MappingJackson2HttpMessageConverter());
Greeting greeting = restTemplate.getForObject(url, Greeting.class);
return greeting;
} catch (Exception e) {
Log.e("MainActivity", e.getMessage(), e);
}
return null;
}
protected void onPostExecute(Greeting greeting) {
....
}
}
and I then call execute method within the onStart method
#Override
protected void onStart() {
super.onStart();
new HttpRequestTask().execute();
}
Once I access this activity, the app crashes. I debuged it and found that the RestTemplate object fails in the instantiation line:
RestTemplate restTemplate = new RestTemplate();
I'am using spring 1.0.1.RELEASE core and rest jars.

Answer 1

The problem was that the added external jars are not deployed with the app at runtime, this link solves this issue:
How can I use external JARs in an Android project?