map 取Key

 

for (Iterator i = keys.iterator(); i.hasNext() 
       {
           String key = (String) i.next();
           String value = (String) map.get(key);
           text+=key + " = " + value;
       }

或者
or (Map.Entry<String,String> entry : map.entrySet()) {
  String key = entry.getKey();
  String value = entry.getValue();
  // do stuff
}   Iterator<Entry<String, String>> iterator = map.entrySet().iterator();

        Entry< String, String> entry;
        while(iterator.hasNext()){
            entry = iterator.next();
            Log.d("Key Value",entry.getKey()+" "+entry.getValue());
        }