CODEWITHSUNDEEP
androidmultithreadingprogress
Bobby
Bobby

Reputation: 482

How to display progress spinner?

I am building an application that will street address from user's input using GeoCoder. Herewith piece of code I made:

Geocoder gc = new Geocoder(getBaseContext(), Locale.getDefault());

List<Address> addresses = null;
StringBuilder sb = new StringBuilder();
String destination = edittext_destination.getText().toString();

try {
    addresses = gc.getFromLocationName(destination, 10);
} catch (Exception e){
    Toast.makeText(getBaseContext(), "Address not found", Toast.LENGTH_SHORT).show();
}

the code above is working but it takes some time to return the result. While waiting for the result I want to display progress spinner. I know that it should use Thread but I don't know how to start. I do hope anyone can help.

Thank you

Upvotes: 1

Views: 793

Answers (2)

jasonflaherty
jasonflaherty

Reputation: 1944

Android Query makes all this Async stuff super easy. You can add spinners and progress bars with just a little more than an async call like this:

Setup:

ProgressDialog dialog = new ProgressDialog(this);

dialog.setIndeterminate(true);
dialog.setCancelable(true);
dialog.setInverseBackgroundForced(false);
dialog.setCanceledOnTouchOutside(true);
dialog.setTitle("Sending...");

String url = "http://www.google.com/uds/GnewsSearch?q=Obama&v=1.0";

You async call:

aq.progress(dialog).ajax(url, JSONObject.class, this, "jsonCb");

Check it out! Excellent response time and help from Peter Liu. This project benefits Devs!

Upvotes: 0

sdabet
sdabet

Reputation: 18670

You could do that with an AsyncTask:

    final String destination = edittext_destination.getText().toString();
    new AsyncTask<String, Void, List<Address>>() {
        private Dialog loadingDialog;

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            loadingDialog = ProgressDialog.show(TestActivity.this, "Please wait", "Loading addresses...");
        }

        @Override
        protected List<Address> doInBackground(String... params) {
            String destination = params[0];
            try {
                Geocoder gc = new Geocoder(getBaseContext(),
                        Locale.getDefault());
                return gc.getFromLocationName(destination, 10);
            } catch (Exception e) {
                return null;
            }
        }

        @Override
        protected void onPostExecute(List<Address> addresses) {
            loadingDialog.dismiss();

            if (addresses == null) {
                Toast.makeText(getBaseContext(), "Geocoding error",
                        Toast.LENGTH_SHORT).show();
            } else if (addresses.size() == 0) {
                Toast.makeText(getBaseContext(), "Address not found",
                        Toast.LENGTH_SHORT).show();
            } else {
                // Do UI stuff with your addresses
                Toast.makeText(getBaseContext(), "Addresses found: " + addresses.size(), Toast.LENGTH_SHORT).show();
            }
        }
    }.execute(destination);

Upvotes: 1

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