HTTP İsteği ve JSON Parse

Java'nın yerleşik HttpURLConnection sınıfı veya Executors kullanarak Thread üzerinde veri okuyoruz.

Unity Editör Adımları

package com.example.weatherapp;
import android.os.Bundle; import android.os.Handler; import android.os.Looper; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import androidx.appcompat.app.AppCompatActivity; import org.json.JSONObject; import java.io.BufferedReader; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; import java.util.concurrent.Executors;

public class MainActivity extends AppCompatActivity {
    String API_KEY = "SİZİN_API_KEYİNİZ";
    @Override protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState); setContentView(R.layout.activity_main);
        EditText editCity = findViewById(R.id.editCity); Button btnSearch = findViewById(R.id.btnSearch); TextView txtWeather = findViewById(R.id.txtWeather);

        btnSearch.setOnClickListener(v -> {
            String city = editCity.getText().toString();
            Executors.newSingleThreadExecutor().execute(() -> {
                try {
                    URL url = new URL("https://api.openweathermap.org/data/2.5/weather?q=" + city + "&appid=" + API_KEY + "&units=metric");
                    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                    BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
                    StringBuilder result = new StringBuilder(); String line;
                    while((line = reader.readLine()) != null) result.append(line);
                    
                    JSONObject json = new JSONObject(result.toString());
                    String temp = json.getJSONObject("main").getString("temp");
                    String desc = json.getJSONArray("weather").getJSONObject(0).getString("description");
                    
                    new Handler(Looper.getMainLooper()).post(() -> {
                        txtWeather.setText(city.toUpperCase() + "\nSıcaklık: " + temp + "°C\nDurum: " + desc);
                    });
                } catch (Exception e) { e.printStackTrace(); }
            });
        });
    }
}

API istekleri asla ana iş parçacığında (UI Thread) çalıştırılamaz, çökme yaşanır. Executors bu yüzden gereklidir.