Android Map to JSON Convert toJson(Map map)

Description

to Json

Declaration

public static String toJson(Map<String, Object> map) 

Method Source Code

import java.util.Iterator;
import java.util.Map;

public class Main{
    public static String toJson(Map<String, Object> map) {
        StringBuilder builder = new StringBuilder();
        builder.append("{");
        Iterator<Map.Entry<String, Object>> iterator = map.entrySet()
                .iterator();/* w  w w. j  a  va 2  s . co m*/
        while (iterator.hasNext()) {
            Map.Entry<String, Object> entry = iterator.next();
            String key = entry.getKey();
            Object value = entry.getValue();

            builder.append("\"").append(key).append("\":");

            if (value instanceof String) {
                String temp = (String) value;
                if (!temp.startsWith("[") && !temp.startsWith("{")) {
                    temp = StringUtils.wrap(temp, "\"");
                }
                builder.append(temp);
            } else {
                builder.append(entry.getValue());
            }
            if (iterator.hasNext()) {
                builder.append(",");
            }
        }
        builder.append("}");

        return builder.toString();
    }
}