Ignore case for JSON-Keys in Android

i'm using in my android开发者_运维问答 app native JSON-Library within Android OS. It works fine, but one thing makes me crazy.

If server interface changes and gives almost the same answer but the key notation will be a bit different (e.g. examplekeyofmyapp and exampleKeyOfMyApp) i have a problem.

Is there the way to ignore the case of the keys?

Or maybe anybody of you uses a workaround for these cases?

Thank you

if you had implemented your code like this
jsonobject.get(examplekeyofmyapp);
then modify your code. simply change the json String to lower case.

jsonString.toLowerCase(). thats it, all the upper case will get converted to lower case.

I faced the same problem and the best solution I found is to check if your key has an available value.

You still have to check all the possible cases you think you could have.

String TAG_URL_LOWER_CASE = "url";
String TAG_URL_UPPER_CASE = "URL";

String urlValue = "";
if (!obj.isNull(TAG_URL_LOWER_CASE)) {
    urlValue = obj.getString(TAG_URL_LOWER_CASE);
} else if (!obj.isNull(TAG_URL_UPPER_CASE)) {
    urlValue = obj.getString(TAG_URL_UPPER_CASE);
}

You will also avoid JsonException if your key has no value associated to you key. Hope it helps

I know this is a few years old, but I thought my solution might help others:

String keyName = null;
for(Iterator<String> iter = jsonData.keys(); iter.hasNext();) {
    String key = iter.next();
    if (key.equalsIgnoreCase(jsonVar)) {
        keyName = key;
        break;
    }
}
jsonData.get(keyName);

Obviously you can change the "get()" to other types of get methods

I have core methods that I use for each of the types that handles the error for you, e.g.

public static String getJSONString(JSONObject jsonData, String jsonVar) {
    // start with a blank name
    String keyName = null;
    // loop through they keys to find the correct spelling
    for(Iterator<String> iter = jsonData.keys(); iter.hasNext();) {
        String key = iter.next();
        if (key.equalsIgnoreCase(jsonVar)) {
            keyName = key;
            break;
        }
    }
    // if the key isn't found, return a null
    if (keyName == null) {
        return keyName;
    }
    // need a try/catch around JSON stuff as the variable could be the wrong type or not exist
    try {
        return jsonData.getString(keyName);
    }
    catch (Exception e) {
        // log the variable & the error
        Log.w("getJSONString", "failed to getJSONstring "+jsonVar+" - "+e.toString());
        // return an empty string because the "get" failed
        return "";
    }
}

Once you have all of the types made, it makes it easier to handle blank or missing values

I hope this helps somebody :)