json原生解析以及Gson解析数组

    private Handler handler = new Handler(){

        @Override

        public void handleMessage(Message msg) {

            if (msg.what == 0){

                String json = (String) msg.obj;

 

                Log.i("json---",json);

 

                //解析...android中json格式的数据只有两种,,一种是{}对应的,解析出来是对象;;;一种是[]对应的,这种是数组或者集合

                //1.集合或者数据在json原生解析,使用的JSONArray这个类...{}对应的在原声解析里面是JSONObject

 

                //2.使用gson解析数组格式的json字符串

                Gson gson = new Gson();

                Type type = new TypeToken<List<String>>() {}.getType();

 

                List<String> jsonList = gson.fromJson(json,type);

 

                Log.i("----",jsonList.size()+"长度");

 

                try {

                    JSONArray jsonArray = new JSONArray(json);

 

                    //遍历这个json格式的数组

                    for (int i=0;i<jsonArray.length();i++){

 

                        String string = jsonArray.getString(i);

                        //添加到集合里面去

                        list.add(string);

                    }

 

                    //设置第一条数据的显示

                    text_toutiao.setText(list.get(index));

                    //发送一个延时的消息

                    handler.sendEmptyMessageDelayed(1,3000);

 

                } catch (Exception e) {

                    e.printStackTrace();

                }

            }else  if (msg.what == 1){

                //接收到延时消息

                index ++;

 

                //取余

                index = index%list.size();

 

                text_toutiao.setText(list.get(index));

 

                //发送一个延时的消息

                handler.sendEmptyMessageDelayed(1,3000);

            }

        }

    };