Menu
I want to convert a JSON string to android Bundle. The requirement was like to pass parameters to an activity directly from server as JSON rather than bundle. How to convert a JSON string to Android Bundle? Please provide abstract code if possible.
572
Android supports all the JSON classes such as JSONStringer, JSONObject, JSONArray, and all other forms to parse the JSON data and fetch the required information by the program. JSON's main advantage is that it is a language-independent, and the JSON object will contain data like a key/value pair.
Try with json. isNull( "field-name" ) .
public class JSONException extends Exception. Thrown to indicate a problem with the JSON API. Such problems include: Attempts to parse or construct malformed documents. Use of null as a name.
Array: A JSONArray is enclosed in square brackets ([). It contains a set of objects. Object: Data enclosed in curly brackets ({) is a single JSONObject. Nested JSONObjects are possible and are very commonly used. Keys: Every JSONObject has a key string that's contains certain value.
This is late, but maybe it helps someone finding this thread:
/** Convert a JSON object to a Bundle that can be passed as the extras of
* an Intent. It passes each number as a double, and everything else as a
* String, arrays of those two are also supported. */
public static Bundle fromJson(JSONObject s) {
Bundle bundle = new Bundle();
for (Iterator<String> it = s.keys(); it.hasNext(); ) {
String key = it.next();
JSONArray arr = s.optJSONArray(key);
Double num = s.optDouble(key);
String str = s.optString(key);
if (arr != null && arr.length() <= 0)
bundle.putStringArray(key, new String[]{});
else if (arr != null && !Double.isNaN(arr.optDouble(0))) {
double[] newarr = new double[arr.length()];
for (int i=0; i<arr.length(); i++)
newarr[i] = arr.optDouble(i);
bundle.putDoubleArray(key, newarr);
}
else if (arr != null && arr.optString(0) != null) {
String[] newarr = new String[arr.length()];
for (int i=0; i<arr.length(); i++)
newarr[i] = arr.optString(i);
bundle.putStringArray(key, newarr);
}
else if (!num.isNaN())
bundle.putDouble(key, num);
else if (str != null)
bundle.putString(key, str);
else
System.err.println("unable to transform json to bundle " + key);
}
return bundle;
}
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
