CODEWITHSUNDEEP
javaandroidhttp
Mads Gad Krogsgaard
Mads Gad Krogsgaard

Reputation: 1

Sending HTTP Request with app - AndroidStudio

I would like to send HTTP requests from my android app when pushing a button to an ESP8266 which is waiting for any webpage to be accessed, however i would prefer if my android app didn't actually open the webpage but rather just "send an HTTP Request"

Right now I'm using;

startActivity(new Intent(Intent.ACTION_QUICK_VIEW, Uri.parse("http://192.168.1.201/onled")));

and it is working, but obviously it is opening the webpage...

Anyone have a good suggestion on how to solve my problem? i am new at java.

Upvotes: 0

Views: 4176

Answers (3)

Piotr Wittchen
Piotr Wittchen

Reputation: 3922

You should create the HTTP connection and HTTP request.

You can do it in a few ways:

Please remember that sending HTTP request is non-deterministic operation and you should execute it in a separate, non-UI thread to keep UI unblocked. You can do it via AsyncTask, which is the simplest solution, but you can also use RxJava with RxAndroid or other approaches.

Upvotes: 0

akbar_ahmad
akbar_ahmad

Reputation: 63

new AsyncTask<Void,Void,Void>(){
        private Exception exception;
        @Override
        protected Void doInBackground(Void... voids) {
            try{
                URL url= new URL("http://yourserveraddress/resource.extension");
                HttpURLConnection con= (HttpURLConnection) url.openConnection();
                //write additional POST data to url.getOutputStream() if you wanna use POST method 
            }catch (Exception ex){
                this.exception=ex;
            }
            return null;
        }

        @Override
        protected void onPostExecute(Void aVoid) {
            super.onPostExecute(aVoid);
        }
    }.execute();

Upvotes: 2

Gratien Asimbahwe
Gratien Asimbahwe

Reputation: 1614

There are many ways to send HTTP Requests from an app. For example using HttpURLConnection with GET method you can proceed as follows:

 StringBuilder content = new StringBuilder();
        try {
            URL u1 = new URL(url);
            HttpURLConnection uc1 = (HttpURLConnection) u1.openConnection();
            if (uc1.getResponseCode()==HttpURLConnection.HTTP_OK) {

                InputStream is = uc1.getInputStream();
                BufferedReader br = new BufferedReader(new InputStreamReader(is, Charset.forName("UTF-8")));
                String line;
                while ((line = br.readLine()) != null) {

                    content.append(line).append("\n");

                }

            }//other codes

You can find simplified ways to do so with Google most sophisticated methods:

Find the reference here

Upvotes: 0

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