how to send string array to server in android using retrofit

Important Ibis answered on September 27, 2022 Popularity 3/10 Helpfulness 2/10

answer how to send string array to server in android using retrofit

how to send string array to server in android using retrofit

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 work tutorial on 27/10/2022

1) create function in your API interface

// api interface...
// java code 
@FormUrlEncoded
@POST("sendArray.php")
Call<ResponseModel> getSomething(@Field("arr[]") String[] arr);

// kotlin code
@FormUrlEncoded
@POST("sendArray.php")
fun getSomething(@Field("arr[]") arr: Array<String?>?): Call<ResponseModel?>?

2) your array must be like this 
// java code 
String[] arr = {"one","two","free","buy"};

// kotlin code
val arr = arrayOf("one","two","free","cost")

3) server side in PHP  (sendArray.php)
<?php
// collecting the POST request
$post = $_POST;
 if(isset($post['arr']) && !empty(['arr'])){
 	// here you can use different methods for get value from getting array
 
 	foreach($post['arr'] as $key => $value){
 		// use $key, $value
 	}
 	// OR
 	$tmpArray = $post['arr'];
    echo $tmpArray[1]; // 0,1,2,3 etc...
 	
    // OR
    echo $post['arr'][1];
    
    
    
    // Retrofit have get response from server, by using 
    // your <ResponseModel> you can send back any data or 
    // specific data like that
    
    echo json_encode(
    	array("fieldName"=>$yourData, 
        //or an array
    	"arrayFieldName"=>array("one","two","hop")
    ));
    
    exit();
 }
 
 
 //---------------------------------------------------
 // in App fields in <ResponseModel> must be like that
 
 // kotlin code
 class ResponseModel{
 	val fieldName:String? = null
    val arrayFieldName: Array<String>? = null
 }
 
 // java code  
 // WARNING I'm not sure about the correct way to write Java code 
 // because I'm a Kotlin user
 
 public class ResponseModel {
 	@SerializedName("fieldName")
 	public String fieldName;
    
 	@SerializedName("arrayFieldName[]")
    public String[] arrayFieldName;
    
    constructor() //etc...
 }

Popularity 3/10 Helpfulness 2/10 Language whatever

Source: Grepper

Tags: android retrofit send server string using whatever

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Contributed on Sep 27 2022

Important Ibis

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how to send string array to server in android using retrofit

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