CODEWITHSUNDEEP
javaandroidjsongson
Anna
Anna

Reputation: 499

How to convert String from json to float array?

in my json data i have data in Array as string e.g:

//
"values": "{{0, 25}, {96.86, 184}}",
"matrix": "[1, 7, 0, 9, 0, 0]",
//

now, I getting the data as String. how can i convert the data to float[]?

Upvotes: 2

Views: 2026

Answers (3)

Muthukrishnan Rajendran
Muthukrishnan Rajendran

Reputation: 11642

You can parse like this,

try {
    JSONObject object = new JSONObject("[your Json String]");

    String value = object.optString("values");

    String floatStr = value.replace("{", "").replace("}", "");

    String[] valuesArr = floatStr.split(",");

    float[] floatArr = new float[valuesArr.length];

    for (int i = 0; i < valuesArr.length; i++) {
        String floatString = valuesArr[i];

        if (TextUtils.isEmpty(floatStr) || TextUtils.isEmpty(floatStr.trim())) {
            floatArr[i] = 0.0f;
            continue;
        }

        floatArr[i] = Float.parseFloat(floatString.trim());
    }

    for (int i = 0; i < floatArr.length; i++) {
        Log.d(TAG, "value : at " + i + " is " + floatArr[i]);
    }
} catch (JSONException e) {
    e.printStackTrace();
}

Upvotes: 2

Bartu
Bartu

Reputation: 1

İf I dont understand wrong Do it first :Sprit your character with String tokenizer then every String seems like number Last thing you have to do take to part of String and put in float Array

Upvotes: 0

Dhiraj Sharma
Dhiraj Sharma

Reputation: 4869

Loop through your json data and use

Float.parseFloat(your_float_value_in_string)

Upvotes: 0

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