randomImage function
DISPLAY SINGLE RANDOM IMAGE FROM ALL DOGS COLLECTION
Returns a random dog image
Implementation
Future<String> randomImage() async {
try {
var response = await _getRequest("breeds/image/random");
var json = jsonDecode(response);
if (json["status"] != "success") {
throw new DogAPIException(json["message"]);
}
return json["message"];
} catch(ex) {
throw new DogAPIException(ex.toString());
}
}