android studio 39 http get請求 並輸出

加入權限
    <uses-permission android:name="android.permission.INTERNET" />
添加按鈕
主程序代碼
import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class MainActivity extends AppCompatActivity {

    private void loadData() {
        try {
            URL url = new URL("https://www.sunofbeach.net/c/1197725454275039232");
            HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
            int responseCode = httpURLConnection.getResponseCode();
            if(responseCode == 200) {
                httpURLConnection.setConnectTimeout(1000);
                InputStream inputStream = httpURLConnection.getInputStream();
                BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream,"UTF-8"));
                String line;
                while((line = bufferedReader.readLine()) != null) {
                    Log.d("MainActivity",line);
                }
                bufferedReader.close();
            }
        } catch(Exception e) {
            e.printStackTrace();
        }
    }

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

        Button btn = findViewById(R.id.button);
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // 響應事件
                Toast.makeText(MainActivity.this,"測試按鈕",Toast.LENGTH_SHORT).show();
                new Thread(new Runnable() {
                    @Override
                    public void run() {
                        loadData();
                    }
                }).start();

            }
        });


    }
}



``