如何将天气预报查询API集成到手机上

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

public class WeatherApiService {
    private static final String API_KEY = "YOUR_API_KEY"; // 请替换为您的API密钥，登录APISpace即可获得
    private static final String BASE_URL = "https://eolink.o.apispace.com/456456/weather/v001/now";  // 接口请求地址

    public String getWeatherForecast(String areacode) {
        StringBuilder url = new StringBuilder(BASE_URL);
        url.append("?areacode=").append(areacode);
        url.append("&X-APISpace-Token=").append(API_KEY);

        // 使用HttpURLConnection发送GET请求
        String jsonWeatherResponse = "";
        try {
            URL urlObject = new URL(url.toString());
            HttpURLConnection urlConnection = (HttpURLConnection) urlObject.openConnection();
            urlConnection.setRequestProperty("X-APISpace-Token", API_KEY); // 设置请求头
            try (BufferedReader reader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()))) {
                jsonWeatherResponse = reader.lines().collect(Collectors.joining(System.lineSeparator()));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

        return jsonWeatherResponse;
    }
}

public class MainActivity extends AppCompatActivity {
    private Button btnGetWeather;
    private TextView tvWeatherInfo;

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

        btnGetWeather = findViewById(R.id.btnGetWeather);
        tvWeatherInfo = findViewById(R.id.tvWeatherInfo);

        btnGetWeather.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // 假设用户已经输入了城市ID
                String areacode = "城市ID"; // 请替换为实际的城市ID
                new FetchWeatherTask().execute(areacode);
            }
        });
    }

    private class FetchWeatherTask extends AsyncTask<String, Void, String> {
        @Override
        protected String doInBackground(String... areacodes) {
            return WeatherApiService.getWeatherForecast(areacodes[0]);
        }

        @Override
        protected void onPostExecute(String weatherJson) {
            super.onPostExecute(weatherJson);
            // 解析JSON并显示天气信息
            // ...
        }
    }
}

dependencies {
    implementation 'com.google.code.gson:gson:2.8.6'
}

public class Weather {
    private String description;
    private String temperature;
    // Getters and setters...
}

// onPostExecute方法是AsyncTask执行完毕后的回调方法，用于在UI线程中更新UI
@Override
protected void onPostExecute(String weatherJson) {
    super.onPostExecute(weatherJson); // 调用父类的onPostExecute方法
    if (weatherJson != null && !weatherJson.isEmpty()) { // 检查返回的JSON字符串是否为空
        // 解析JSON字符串为Weather对象
        Weather weather = parseWeatherJson(weatherJson);
        if (weather != null) {
            // 如果解析成功，更新UI显示天气信息
            tvWeatherInfo.setText("天气现象: " + weather.text + ", " +
                    "气温: " + weather.temp + "°C, " +
                    "体感温度: " + weather.feels_like + "°C, " +
                    "相对湿度: " + weather.rh + "%");
        } else {
            // 如果解析失败，显示错误信息
            tvWeatherInfo.setText("无法获取天气信息。");
        }
    } else {
        // 如果JSON字符串为空，显示无天气数据
        tvWeatherInfo.setText("无天气数据。");
    }
}

// parseWeatherJson方法用于解析JSON字符串并返回Weather对象
private Weather parseWeatherJson(String json) {
    Weather weather = new Weather(); // 创建Weather对象用于存储解析后的数据
    try {
        // 解析JSON字符串为JSONObject对象
        JSONObject jsonObject = new JSONObject(json);
        JSONObject result = jsonObject.getJSONObject("result"); // 获取result对象
        JSONObject realtime = result.getJSONObject("realtime"); // 获取实时天气信息

        // 获取天气现象、气温、体感温度和相对湿度
        weather.text = realtime.getString("text"); // 天气现象描述
        weather.temp = realtime.getDouble("temp"); // 气温
        weather.feels_like = realtime.getInt("feels_like"); // 体感温度
        weather.rh = realtime.getInt("rh"); // 相对湿度

    } catch (JSONException e) {
        // 如果解析过程中出现异常，打印堆栈信息并返回null
        e.printStackTrace();
        return null;
    }
    // 返回解析后的Weather对象
    return weather;
}