Is there any way to convert JSON String to query String in android?

Question

I am stuck at converting a Json string into query string.

Actually, I want to create query string and from that query string I'll generate a SHA hash and set it in header to send to the server.

Please help!

Answer 1

Is your JSON String currently stored in a JSONObject? If not, this would be the best place to start. Something like this:

JSONObject json = new JSONObject(returnedString);
String firstValue= json.get(firstKey);
String secondValue = json.get(secondKey);

//And then construct your query string using the obtained values

Edit

Generic Method as suggested below...

Something like this:

public String getQueryString(String unparsedString){
    StringBuilder sb = new StringBuilder();
    JSONObject json = new JSONObject(unparsedString);
    Iterator<String> keys = json.keys();
    sb.append("?"); //start of query args
    while (keys.hasNext()) {
        String key = keys.next();
        sb.append(key);
        sb.append("=");
        sb.append(json.get(key);
        sb.append("&"); //To allow for another argument.

    }

    return sb.toString();

If you have more questions regarding JSONObject parsing in Android these docs are very helpful

Answer 2

On Android :

Uri uri=Uri.parse(url_string);
uri.getQueryParameter("para1");

On Android, the Apache libraries provide a Query parser:

http://developer.android.com/reference/org/apache/http/client/utils/URLEncodedUtils.html and http://hc.apache.org/httpcomponents-client-ga/httpclient/apidocs/org/apache/http/client/utils/URLEncodedUtils.html