I've a php
file named test.php
stored in my Openshift
server (http://phpgear-shifz.rhcloud.com/v1/test.php) with the below code.
<?php
echo "Hello";
Task
I am trying to download the text from an Android application.
Problem
I am getting a java.net.UnknownHostException: Unable to resolve host "phpgear-shifz.rhcloud.com": No address associated with hostname
while connecting through a WiFi
network, but everything is fine with Mobile Data
.
Android Activity Code
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test);
final TextView tvTest = (TextView) findViewById(R.id.tvTest);
new AsyncTask<Void, Void, String>() {
@Override
protected String doInBackground(Void... params) {
try {
final URL url = new URL("http://phpgear-shifz.rhcloud.com/v1/test.php");
final BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream()));
final StringBuilder sb = new StringBuilder();
String line;
while((line = br.readLine())!=null){
sb.append(line).append("\n");
}
br.close();
return sb.toString();
} catch (IOException e) {
e.printStackTrace();
return "Error: " + e.getMessage();
}
}
@Override
protected void onPostExecute(String result) {
tvTest.setText(result);
}
}.execute();
}
RESPONSES
on WiFi
on Mobile Data
Question
1) Why I can't connect through the WiFi network
where Mobile Data
is perfectly fine ?
2) How to solve this problem ?
NOTE: Sometime it's getting connected, sometime won't.
Your DNS doesn't know the IP address of the requested site.
You are experiencing problems, because the DNS of your Wifi connection cannot convert a hostname to an IP address. And your data carrier is using different DNS which has associated IP address to hostname.
Try to change your DNS server address on your Wifi router or use direct IP address of the website if available.
Here are some google DNS server addresses