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Android Android Lists and Adapters (2015) Updating the Data Model Using JSONArray

Posted by MUZ141097 Simangele Jogwe
MUZ141097 Simangele Jogwe
4,630 Points

Finally, write a 'for' loop that loops through jsonShows. In each step of the loop, use getJSONObject(int index) to get

Challenge Task 2 of 2

Finally, write a 'for' loop that loops through jsonShows. In each step of the loop, use getJSONObject(int index) to get a JSONObject from the array. Then use the Log.i() method (with "CodeChallenge" as the tag) to write the show title. Please help am stuck on this challenge. Am getting this error when l run the code below Bummer! Don't forget to use "CodeChallenge" as the 1st parameter of the Log.i() method!

for (int i = 0; i < jsonShows.length(); i++) { JSONObject shows = jsonShows.getJSONObject(i); Log.i("CodeChallenge"); }

CodeChallenge.java 
// JSONObject was loaded from data.json
JSONArray jsonShows = jsonData.getJSONArray("shows");
 for (int i = 0; i < jsonShows.length(); i++) {
    JSONObject shows = jsonShows.getJSONObject(i);
    Log.i("CodeChallenge");
  }

1 Answer

Steve Hunter
Steve Hunter
57,712 Points

Hi there,

The for loop would look like:

JSONArray jsonShows = jsonData.getJSONArray("shows");
for (int i = 0; i < jsonShows.length(); i++){
  JSONObject jObj = jsonShows.getJSONObject(i);
  Log.i("CodeChallenge", jObj.getString("title"));
}

Your output isn't what the challenge expects - it wants the TAG and the show title.

Hope that helps.

Steve.

Tuan Zen
Tuan Zen
6,882 Points
Tuan Zen
Tuan Zen
6,882 Points

Hi Steve,

Thanks for your answer!! I'd like to know why u don't need to pass in a return statement for this for loop, 'cause usually there would be a runtime error if there isnt one?

Steve Hunter
Steve Hunter
57,712 Points

Hi there,

A for loop doesn't need a return to work. This challenge is expecting an output in the form of an entry in the Log - that's achieved within the loop itself so there's no need to specifically return anything.

Why would a lack of return create a runtime error?

Steve.