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For loop printing String only once when the condition is equal to 25 – Facebook api

I’m trying to print out an object in the JSON using Facebook Graph API.

Here’s my code:

try{
    JSONArray data = innerJson.getJSONArray("data");
    Log.d("innerDataLength", String.valueOf(data.length()));

    for (int i = 0; i<data.length(); i++) {
        String message = data.getJSONObject(i).getString("message");
        Log.d("message", message);
    }
} catch (JSONException e) {
    Log.d("exception", e.getMessage());
}

Here’s output:

D/innerDataLength: 25
D/message: "blah blah blah"
D/exception: No value for message

As you can see the condition i.e. data.length() is 25 then why am I getting the message printed out only once?

Tags:

2

Answers


  1. 0

    Note that you get an exception:

    D/exception: No value for message

    It indicates that the second object in JSONArray has no message property. Looks like it’s optional, so you need to check whether message property exists first.

    Update:

    try{
    JSONArray data = innerJson.getJSONArray("data");
    Log.d("innerDataLength", String.valueOf(data.length()));

    for (int i = 0; i < data.length(); i++) {
        JSONObject obj = data.getJSONObject(i);
        if (obj.has("message")) {
            String message = obj.getString("message");
            Log.d("message", message);
        }
        if (obj.has("story")) {
            String story= obj.getString("story");
            Log.d("story", story);
        }
    }
} catch (JSONException e) {
    Log.d("exception", e.getMessage());
}
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  2. 0

    some of object in innerJson.getJSONArray(“data”) array don’t has message

    to check what i say comment the line inside loop and just print i will get 0 to 24

    to avoid that surrounded the statment of parsing message with try and catch to avoid parsing object that not contain message

    you can also print data.getJSONObject(i).toString to see parsing object

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