Android : How can i get result from json?

I want show in a TextView the result from this web page:

of course this is an example.. origin and destination will be variables..

so there will be:

private EditText originEdit;
private EditText destEdit;
private String origin;
private String destination;
private Button go;

onClick() in the go button, i need to parse the json in that page and show the result in the textView. simple.. I tried to look at this: but i don't want do something like that..i would something easier.