如何在Android中动态传递POST、GET等方法类型

在Android中动态传递POST、GET等方法类型，可以通过使用HttpURLConnection或者OkHttp库来实现。下面是一个示例代码：

使用HttpURLConnection库：

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;

public class HttpUtils {
    public static String sendRequest(String url, String method, String params) {
        HttpURLConnection connection = null;
        InputStream inputStream = null;
        try {
            URL requestUrl = new URL(url);
            connection = (HttpURLConnection) requestUrl.openConnection();
            connection.setRequestMethod(method);
            connection.setConnectTimeout(5000);
            connection.setReadTimeout(5000);
            connection.setDoInput(true);
            connection.setDoOutput(true);

            if (method.equals("POST")) {
                OutputStream outputStream = connection.getOutputStream();
                outputStream.write(params.getBytes());
                outputStream.flush();
                outputStream.close();
            }

            int responseCode = connection.getResponseCode();
            if (responseCode == HttpURLConnection.HTTP_OK) {
                inputStream = connection.getInputStream();
                BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
                StringBuilder response = new StringBuilder();
                String line;
                while ((line = reader.readLine()) != null) {
                    response.append(line);
                }
                return response.toString();
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (connection != null) {
                connection.disconnect();
            }
        }
        return null;
    }
}

使用示例：

String url = "http://example.com/api";
String method = "POST";
String params = "param1=value1&param2=value2";

String response = HttpUtils.sendRequest(url, method, params);

使用OkHttp库：

首先，在项目的build.gradle文件中添加OkHttp库的依赖：

dependencies {
    implementation 'com.squareup.okhttp3:okhttp:4.9.1'
}

然后，使用以下代码发送请求：

import okhttp3.FormBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;

public class HttpUtils {
    public static String sendRequest(String url, String method, String params) {
        OkHttpClient client = new OkHttpClient();
        Request.Builder requestBuilder = new Request.Builder().url(url);

        if (method.equals("POST")) {
            RequestBody requestBody = new FormBody.Builder()
                    .add("param1", "value1")
                    .add("param2", "value2")
                    .build();
            requestBuilder.post(requestBody);
        }

        Request request = requestBuilder.build();

        try {
            Response response = client.newCall(request).execute();
            if (response.isSuccessful()) {
                return response.body().string();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

        return null;
    }
}

使用示例：

String url = "http://example.com/api";
String method = "POST";
String params = "param1=value1&param2=value2";

String response = HttpUtils.sendRequest(url, method, params);

以上代码示例中，我们通过HttpURLConnection和OkHttp库分别实现了在Android中动态传递POST和GET方法类型的请求。在使用时，只需要提供请求的URL、请求方法和参数即可。