I have set up a XAMPP server on a virtual machine, and I've set up a PHP code to return a very simple JSON object, the code is in android_connect/get_all_products
<?php
// array for JSON response
$response = array();
$response["name"] = "IPhone";
echo json_encode($response);
?>
And the code works, when I enter in my browser http://192.168.2.107/android_connect/get_all_products.php I get the correct JSON, even on an external machine on my network.
But I am unable to fetch it in an android application using Retrofit2.
below is a POJO I created to represent the JSON:
public class Results {
@SerializedName("name")
private String name;
public Results(String pid, String name) {
this.name = name;
}
public String getName() {
return name;
}
}
This is the API interface:
public interface Api {
String BASE_URL = "http://192.168.2.107/";
@GET("android_connect/get_all_products.php")
Call<Results> displayName();
}
And this is the retrofit client instance:
public class RetrofitClient {
private static RetrofitClient instance = null;
private Api myApi;
private RetrofitClient() {
Retrofit retrofit = new Retrofit.Builder().baseUrl(Api.BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
myApi = retrofit.create(Api.class);
}
public static synchronized RetrofitClient getInstance() {
if (instance == null) {
instance = new RetrofitClient();
}
return instance;
}
public Api getMyApi() {
return myApi;
}
}
and finaly this is the main activity code:
public class MainActivity extends AppCompatActivity {
ListView superListView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
superListView = findViewById(R.id.superListView);
getSuperHeroes();
}
private void getSuperHeroes() {
Call<Results> call = RetrofitClient.getInstance().getMyApi().displayName();
call.enqueue(new Callback<Results>() {
@Override
public void onResponse(Call<Results> call, Response<Results> response) {
Toast.makeText(getApplicationContext(), response.body().getName(), Toast.LENGTH_LONG).show();
}
@Override
public void onFailure(Call<Results> call, Throwable t) {
Toast.makeText(getApplicationContext(), "An error has occured", Toast.LENGTH_LONG).show();
}
});
}
}
Everytime I get a toast saying An error has occured (as it means the call has failed somewhere)
NOTES: I have added INTERNET permission in the manifest.xml file I have tried some variation of my code on an external server and it runs fine, seems like the problem happens when I try to connect to my server.
Thank you in advance, I am very new to android programing and I have an assignment to connect it to a php server.
EDIT: as ADyson pointed, the throwable t in onFailure, gives the folowing message: cLEARTEXT communication to 192.168.2.107 not permitted by network security policy. What does that mean? and what should I do?
