How to debug network API in flutter - php

Question

Please anyone help me to check the code. The web call is not made. I checked the future function is working well with the other working working code. Another doubt, can I use two http.post in a single future function? One to only post data not to get, and another one to use both post and get data.
Future<String> saveTime() async {
var usagetime = 5;
if (usagetime >= 0) {
var savetime = {
'user_id': 120,
'app_id': 1,
'usage_duration': 200,
};
var url2 =
'http://192.168.43.55:8080/php/save_usage_duration.php';
var response = await http.post(url2, body: savetime);
var message1 = jsonDecode(response.body.toString());
print(message1);
if (message1 == 'ok') {
Constants.prefsSaveTime.setInt("usage_time", 0);
Scaffold.of(context).showSnackBar(SnackBar(
content:
Text("Your previous usage time has been saved successfully."),
));
} else {
Scaffold.of(context).showSnackBar(SnackBar(
content: Text(
"Previous data not saved, please inform AA Store developer."),
backgroundColor: Colors.redAccent,
duration: Duration(seconds: 5, milliseconds: 500),
));
}
}
}
And here is my PHP code
<?php
include ("includes/conn.php"); //$conn
include ("includes/datetime.php"); //$date $time
$user_id = $_POST["user_id"];
$app_id = $_POST["app_id"];
$usage_duration = $_POST["usage_duration"];
// $user_id = 120;
// $app_id = 1;
// $usage_duration = 5532;
$sql = "INSERT INTO `save_usage_duration`(`duration_id`, `user_id`, `app_id`, `usage_duration`, `usage_date`, `usage_entry_timing`) VALUES (' ','$user_id','$app_id','$usage_duration','$date','$time')";
if (mysqli_query($conn, $sql)) {
$success='ok';
echo json_encode($success);
} else {
$fail = 'fail';
echo json_encode($fail);
}
?>

Answer 1

You are sending a Map savetime which contain value of integers.
You should send a jsonObject in your body,
So use jsonEncode() to convert yoyr map to jsonObject
Replace this line
var response = await http.post(url2, body: savetime);
With
var response = await http.post(url2, body: jsonEncode(savetime));