从treemap到ArrayList的隐字符串，该字符串为ArrayList

Question

我正在从treemap中获取值：

LatLng allLatLng= new LatLng((lat1),(long1));
all.add(allLatLng);

 map.put("latlng" , all.toString());

      Collections.sort(list, new Comparator<Map<String, String>>() {

            @Override
            public int compare(Map<String, String> o1, Map<String, String> o2) {
                String value1 =  o1.get("amount");
                String value2 =  o2.get("amount");
                return Integer.parseInt(value1)-Integer.parseInt(value2);
            }
        });

        for (Map<String, String> map1 : list) {
            String id = map1.get("id");
            String amount = map1.get("amount");
            System.out.println("amount= "+amount + " , " +"id = "+id);
  String idlatlng = map1.get("latlng");
        }

String idlatlng = map1.get("latlng");

字符串idlatlng-->ArrayList

无法按升序对列表进行排序

我从idlatlng获得的值是:[<代码>LAT/LNG:(70.0187,-141.0205),LAT/LNG:(70.4515,-144.8163）,LAT/LNG:(70.4515,-144.8163）,LAT/LNG:(70.4515,-144.8163）,LAT/LNG:(70.4515,-144.8163）,LAT/LNG:(70.4515,-144.8163）,LAT/LNG:(70.4515,-144.8163）,LAT/LNG:(70.4515,-144.8163）,LAT/LNG:(70.4515,-4515,-144.8163)]

Answer 1

我想你想这样：

private ArrayList<LatLng> latlngs = new ArrayList<LatLng>();

for (Map<String, String> map1 : list) {
String id = map1.get("id");
     String amount = map1.get("amount");              
     String idlatlng = map1.get("latlng");

     LatLng latLng = new LatLng(id , amount, idlatlng);

     latlngs.add(latLng);

}