Check HTTP connection to a URL (Android)

Question

I am trying to check a connection to a URL using HTTP in an app...

Process:

User clicks buttons, app sends a get request and then if successful it will return true, else false.

 final Button mbutton = (Button) findViewById(R.id.httpcheck);
    mbutton.setOnClickListener(new View.OnClickListener(){
        public void onClick(View v){

            public boolean isConnectedToServer(String url, int timeout) {
                try{
                    URL myUrl = new URL("http://www.google.co.uk");
                    URLConnection connection = myUrl.openConnection();
                    connection.setConnectTimeout(timeout);
                    connection.connect();
                    return true;
                } catch (Exception e) {
                    return false;
                }
            }

        }
    });

Example

And what the question? Possible duplicate http://stackoverflow.com/questions/3584210/preferred-java-way-to-ping-a-http-url-for-availability — Georgy Gobozov, Mar 16 '14 at 22:29
You may want to move your url connection code into an `AsyncTask` — donfuxx, Mar 16 '14 at 22:31
Updated OP, I basically want to check a connection to a URL, and for it to return connection successful/Not succesful — Rory Price, Mar 16 '14 at 22:35

score 4 · Accepted Answer · answered Mar 16 '14 at 22:39

4

You are creating a method in your own click instead of calling the method. you should put the isConntectedToServer method in an asynctask and call the AsyncTask in the onClick

final Button mbutton = (Button) findViewById(R.id.httpcheck);
mbutton.setOnClickListener(new View.OnClickListener(){
    public void onClick(View v){

      //call asynctask containing isConntectedToServer method here

    }
});

//put this code in an asynctask and call it there
 public boolean isConnectedToServer(String url, int timeout) {
            try{
                URL myUrl = new URL("http://www.google.co.uk");
                URLConnection connection = myUrl.openConnection();
                connection.setConnectTimeout(timeout);
                connection.connect();
                return true;
            } catch (Exception e) {
                return false;
            }
        }

answered Mar 16 '14 at 22:39

Parnit

1,032
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How do I use a asynctask? Any help would be really appreciated – Rory Price Mar 16 '14 at 22:49
I suggest reading the android developer link i have pasted here. http://developer.android.com/reference/android/os/AsyncTask.html. It will provide all the details on asynctask with an example on how to use it. In a nut shell, an asynctask has 2 main parts: 1. doInBackground method to make a network call to execute a function or get data (where you will use your IsConnectedToServer method) and 2. onPostExecute to store data and update the UI thread. – Parnit Mar 16 '14 at 23:19
This always produce exception of NetworkOnMainthread exception – EngineSense Nov 17 '16 at 07:30

Joan Gil · Answer 2 · 2016-05-03T08:55:21.313

0

Here you can find an answer of a similar question. You just have to change the function to make your function return a boolean. Hope that helps you.

Test an HTTP connection

edited May 03 '16 at 08:55

answered Mar 17 '14 at 00:14

Joan Gil

282
3
11

Check HTTP connection to a URL (Android)

2 Answers2