How to send post parameters dynamically (or in loop) in OKHTTP 3.x in android?

Here's how I do it:

FormBody.Builder formBuilder = new FormBody.Builder()        .add("key", "123");// dynamically add more parameter like this:formBuilder.add("phone", "000000");RequestBody formBody = formBuilder.build();Request request = new Request.Builder()                .url("https://aaa.com")                .post(formBody)                .build();

Imports

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

Code:

// HashMap with ParamsHashMap<String, String> params = new HashMap<>();params.put( "Param1", "A" );params.put( "Param2", "B" );// Initialize Builder (not RequestBody)FormBody.Builder builder = new FormBody.Builder();// Add Params to Builderfor ( Map.Entry<String, String> entry : params.entrySet() ) {    builder.add( entry.getKey(), entry.getValue() );}// Create RequestBodyRequestBody formBody = builder.build();// Create Request (same)Request request = new Request.Builder()        .url( "url" )        .post( formBody )        .build();

Here's my version

/** * <strong>Uses:</strong><br/> * <p> * {@code * List<Pair<String, String>> pairs = new ArrayList<>();} * <br/> * {@code pairs.add(new Pair<>("key1", "value1"));}<br/> * {@code pairs.add(new Pair<>("key2", "value2"));}<br/> * {@code pairs.add(new Pair<>("key3", "value3"));}<br/> * <br/> * {@code postToServer("http://www.example.com/", pairs);}<br/> * </p> * * @param url * @param pairs List of support.V4 Pair * @return response from server in String format * @throws Exception */public String postToServer(String url, List<Pair<String, String>> pairs) throws Exception {    okhttp3.OkHttpClient client = new okhttp3.OkHttpClient();    okhttp3.Request.Builder builder = new okhttp3.Request.Builder().url(url);    if (pairs != null) {        okhttp3.FormBody.Builder postData = new okhttp3.FormBody.Builder();        for (Pair<String, String> pair : pairs) {            postData.add(pair.first, pair.second);        }        builder.post(postData.build());    }    okhttp3.Request request = builder.build();    okhttp3.Response response = client.newCall(request).execute();    if (!response.isSuccessful()) {        throw new IOException(response.message() + " " + response.toString());    }    return response.body().string();}