Best way to remove JSON object from JSON object

Question

Assuming that I have a JSONObject

{
    "poll_answers":{
        "213":{
            "poll_answer_text":"Black",
            "poll_answer_id":"213"
        },
        "214":{
            "poll_answer_text":"White",
            "poll_answer_id":"214"
        },
        "218":{
            "poll_answer_text":"Colorful",
            "poll_answer_id":"218"
        }
    }
}

what is the most relevant/best way to remove** a JSONObject with key "214" (for example) since the android remove method returns the value previously mapped by the key but not the given object excluding the object I want to remove. So the solution should look like:

{
    "poll_answers":{
        "213":{
            "poll_answer_text":"Black",
            "poll_answer_id":"213"
        },
        "218":{
            "poll_answer_text":"Colorful",
            "poll_answer_id":"218"
        }
    }
}

Kevin Coppock · Accepted Answer · 2014-10-29 16:03:48Z

2

The remove() method is what you want -- however, you have to navigate in one level deeper since it's contained within another JSONObject:

JSONObject object = new JSONObject("your json string");
object.getJSONObject("poll_answers").remove("214");

answered Oct 29, 2014 at 16:03

Kevin Coppock

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2 Comments

sitilge Over a year ago

No offense here, but what if I wanted to remove the object poll_answers ? The object received would be {"213":{"poll_answer_text":"Black","poll_answer_id":"213"},"218":{"poll_answer_text":"Colorful","poll_answer_id":"218"}} but what I wanted was empty object {}. Should I use loops to achieve that? Thx

Kevin Coppock Over a year ago

If you wanted to remove poll_answers, you would just use object.remove("poll_answers"). You can only remove direct children of the object you're referencing.

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