android studio 使用心知天气天气预报app

以下是使用Android Studio和心知天气API创建天气预报应用的步骤：

1. 在Android Studio中创建一个新的项目。
2. 在项目的build.gradle文件中添加以下依赖项：

   implementation 'com.android.volley:volley:1.2.0'
   implementation 'com.google.code.gson:gson:2.8.7'

3. 在AndroidManifest.xml文件中添加以下权限：

   <uses-permission android:name="android.permission.INTERNET" />

4. 创建一个新的Java类，命名为Weather.java，用于存储天气信息的数据模型。

   public class Weather {
       private String city;
       private String temperature;
       private String weather;

       public String getCity() {
           return city;
       }

       public void setCity(String city) {
           this.city = city;
       }

       public String getTemperature() {
           return temperature;
       }

       public void setTemperature(String temperature) {
           this.temperature = temperature;
       }

       public String getWeather() {
           return weather;
       }

       public void setWeather(String weather) {
           this.weather = weather;
       }
   }

5. 创建一个新的Java类，命名为WeatherRequest.java，用于发送天气请求并解析JSON响应。

   public class WeatherRequest {
       private static final String API_KEY = "YOUR_API_KEY";
       private static final String BASE_URL = "https://api.seniverse.com/v3/weather/now.json";

       public interface WeatherCallback {
           void onSuccess(Weather weather);
           void onError(String message);
       }

       public static void getWeather(String city, WeatherCallback callback) {
           String url = BASE_URL + "?key=" + API_KEY + "&location=" + city;
           JsonObjectRequest request = new JsonObjectRequest(Request.Method.GET, url, null,
                   response -> {
                       try {
                           JSONObject result = response.getJSONObject("results").getJSONArray("now").getJSONObject(0);
                           Weather weather = new Weather();
                           weather.setCity(result.getString("location"));
                           weather.setTemperature(result.getString("temperature"));
                           weather.setWeather(result.getString("text"));
                           callback.onSuccess(weather);
                       } catch (JSONException e) {
                           callback.onError("Failed to parse JSON response");
                       }
                   },
                   error -> callback.onError("Failed to make weather request"));

           RequestQueue queue = Volley.newRequestQueue(context);
           queue.add(request);
       }
   }

6. 在MainActivity.java中，添加以下代码来获取天气信息并更新UI：

   public class MainActivity extends AppCompatActivity {
       private TextView cityTextView;
       private TextView temperatureTextView;
       private TextView weatherTextView;

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

           cityTextView = findViewById(R.id.cityTextView);
           temperatureTextView = findViewById(R.id.temperatureTextView);
           weatherTextView = findViewById(R.id.weatherTextView);

           WeatherRequest.getWeather("YOUR_CITY", new WeatherRequest.WeatherCallback() {
               @Override
               public void onSuccess(Weather weather) {
                   runOnUiThread(() -> {
                       cityTextView.setText(weather.getCity());
                       temperatureTextView.setText(weather.getTemperature());
                       weatherTextView.setText(weather.getWeather());
                   });
               }

               @Override
               public void onError(String message) {
                   runOnUiThread(() -> Toast.makeText(MainActivity.this, message, Toast.LENGTH_SHORT).show());
               }
           });
       }
   }

请注意，将"YOUR_API_KEY"替换为您在心知天气网站上获取的API密钥，并将"YOUR_CITY"替换为您想要获取天气信息的城市。