[移动开发]json解析

package com.sgxy_ict.onetnet_demo;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.widget.TextView;

import com.google.gson.Gson;
import com.sgxy_ict.onetnet_demo.data.Get_Temp;

import org.jetbrains.annotations.NotNull;

import java.io.IOException;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public class MainActivity extends AppCompatActivity {

    TextView TX_Temp;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        TX_Temp = findViewById(R.id.tx_temp_show);

        Thread_Onenet_Get thread_onenet_get = new Thread_Onenet_Get();
        thread_onenet_get.start();
    }


    private class Thread_Onenet_Get extends Thread{
        @Override
        public void run() {
            String url = "http://api.heclouds.com/devices/652822497/datastreams/temp";
            String api_key = "XXDim0pplVQNIDFRZwmKQGQxdFs=";

            Request request = new Request.Builder().
                    url(url).
                    addHeader("api-key",api_key).
                    get().
                    build();

            Call call = new OkHttpClient().newCall(request);
            call.enqueue(new Callback() {
                @Override
                public void onFailure(@NotNull Call call, @NotNull IOException e) {
                    Log.d("Wlei","------------onFailure-----");
                }

                @Override
                public void onResponse(@NotNull Call call, @NotNull Response response) throws IOException {
                    String get_Json = response.body().string();
                    Log.d("Wlei",get_Json);

                    Get_Temp get_temp = new Gson().fromJson(get_Json,Get_Temp.class);
                    int temp = get_temp.getData().getCurrent_value();

                    Message msg = new Message();
                    msg.what = 1001;
                    Bundle bundle = new Bundle();
                    bundle.putInt("temp",temp);
                    msg.setData(bundle);
                    myhandler.sendMessage(msg);
                }
            });

        }
    }

    Handler myhandler = new Handler(){
        @Override
        public void handleMessage(@NonNull Message msg) {
            switch (msg.what){
                case 1001:
                    Log.d("Wlei",""+msg.getData().getInt("temp",20));

                    TX_Temp.setText(""+msg.getData().getInt("temp",20));
                    break;
            }

        }
    };
}