Android: How to encode an URL path

Reference page
http://developer.android.com/reference/java/net/URLEncoder.html


Input (Bundle):
Bundle parameters;

Output (Encoded path):
String result = null;
StringBuilder sb = new StringBuilder();
boolean first = true;
for (String key : parameters.keySet()) {
    if (first) {
        first = false;
    }
    else {
        sb.append("&");
    }
    sb.append(URLEncoder.encode(key) + "=" +
        URLEncoder.encode(parameters.getString(key)));
}
result = sb.toString();