Example usage for android.os AsyncTask AsyncTask

List of usage examples for android.os AsyncTask AsyncTask

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Introduction

In this page you can find the example usage for android.os AsyncTask AsyncTask.

Prototype

public AsyncTask()

Source Link

Document

Creates a new asynchronous task.

Usage

From source file:ar.com.tristeslostrestigres.diasporanativewebapp.services.GetPodsService.java

private void getPods() {
    /*/*from  w  ww  .  j av  a  2 s .  c  o  m*/
     * Most of the code in this AsyncTask is from the file getPodlistTask.java
     * from the app "Diaspora Webclient".
     * A few modifications and adaptations were made by me.
     * Source:
     * https://github.com/voidcode/Diaspora-Webclient/blob/master/src/com/voidcode/diasporawebclient/getPodlistTask.java
     * Thanks to Terkel Srensen
     */
    AsyncTask<Void, Void, String[]> getPodsAsync = new AsyncTask<Void, Void, String[]>() {
        @Override
        protected String[] doInBackground(Void... params) {

            // TODO: Update deprecated code

            StringBuilder builder = new StringBuilder();
            HttpClient client = new DefaultHttpClient();
            List<String> list = null;
            try {
                HttpGet httpGet = new HttpGet("http://podupti.me/api.php?key=4r45tg&format=json");
                HttpResponse response = client.execute(httpGet);
                StatusLine statusLine = response.getStatusLine();
                int statusCode = statusLine.getStatusCode();
                if (statusCode == 200) {
                    HttpEntity entity = response.getEntity();
                    InputStream content = entity.getContent();
                    BufferedReader reader = new BufferedReader(new InputStreamReader(content));
                    String line;
                    while ((line = reader.readLine()) != null) {
                        builder.append(line);
                    }
                } else {
                    //TODO  Notify User about failure
                    Log.e(TAG, "Failed to download list of pods");
                }
            } catch (IOException e) {
                //TODO handle json buggy feed
                e.printStackTrace();
            }
            //Parse the JSON Data
            try {
                JSONObject j = new JSONObject(builder.toString());
                JSONArray jr = j.getJSONArray("pods");
                Log.d(TAG, "Number of entries " + jr.length());
                list = new ArrayList<String>();
                for (int i = 0; i < jr.length(); i++) {
                    JSONObject jo = jr.getJSONObject(i);
                    Log.d(TAG, jo.getString("domain"));
                    String secure = jo.getString("secure");
                    if (secure.equals("true"))
                        list.add(jo.getString("domain"));
                }

            } catch (Exception e) {
                //TODO Handle Parsing errors here
                e.printStackTrace();
            }
            if (list != null)
                return list.toArray(new String[list.size()]);
            else
                return null;
        }

        @Override
        protected void onPostExecute(String[] strings) {
            Intent broadcastIntent = new Intent(MESSAGE);
            if (strings != null)
                broadcastIntent.putExtra("pods", strings);
            sendBroadcast(broadcastIntent);
            stopSelf();
        }
    };
    getPodsAsync.execute();
}

From source file:com.blork.anpod.util.BitmapUtils.java

/**
 * Only call this method from the main (UI) thread. The {@link OnFetchCompleteListener} callback
 * be invoked on the UI thread, but image fetching will be done in an {@link AsyncTask}.
 *
 * @param context the context// w  w w.  ja v  a2  s .co m
 * @param desiredHeight 
 * @param desiredWidth 
 * @param url the url
 * @param name the name
 * @param decodeOptions the decode options
 * @param cookie An arbitrary object that will be passed to the callback.
 * @param callback the callback
 */
public static void fetchImage(final Context context, final Picture picture, final int desiredWidth,
        final int desiredHeight, final OnFetchCompleteListener callback) {
    new AsyncTask<String, Void, BitmapResult>() {

        @Override
        protected BitmapResult doInBackground(String... params) {

            BitmapResult result = fetchImage(context, picture, desiredWidth, desiredHeight);

            return result;
        }

        @Override
        protected void onPostExecute(BitmapResult result) {
            callback.onFetchComplete(result);
        }
    }.execute(picture.getFullSizeImageUrl());
}

From source file:com.socialize.auth.twitter.TwitterOAuthProvider.java

public void retrieveRequestTokenAsync(final OAuthConsumer consumer, final String callbackUrl,
        final OAuthRequestTokenUrlListener listener) {

    new AsyncTask<Void, Void, Void>() {

        String url;/*w  w  w.j av a 2  s. co m*/
        Exception error;

        @Override
        protected Void doInBackground(Void... params) {
            try {
                url = retrieveRequestToken(consumer, callbackUrl);
            } catch (Exception e) {
                error = e;
            }

            return null;
        }

        @Override
        protected void onPostExecute(Void result) {
            if (listener != null) {
                if (error != null) {
                    listener.onError(error);
                } else {
                    listener.onRequestUrl(url);
                }
            }
        }
    }.execute();
}

From source file:com.example.m.niceproject.service.WeatherCacheService.java

public void load(final WeatherServiceListener listener) {

    new AsyncTask<WeatherServiceListener, Void, Channel>() {
        private WeatherServiceListener weatherListener;

        @Override/* www .j  a v a2  s .com*/
        protected Channel doInBackground(WeatherServiceListener[] serviceListeners) {
            weatherListener = serviceListeners[0];
            try {
                FileInputStream inputStream = context.openFileInput(CACHED_WEATHER_FILE);

                StringBuilder cache = new StringBuilder();
                int content;
                while ((content = inputStream.read()) != -1) {
                    cache.append((char) content);
                }

                inputStream.close();

                JSONObject jsonCache = new JSONObject(cache.toString());

                Channel channel = new Channel();
                channel.populate(jsonCache);

                return channel;

            } catch (Exception e) {
                error = e;
            }

            return null;
        }

        @Override
        protected void onPostExecute(Channel channel) {
            if (channel == null && error != null) {
                weatherListener.serviceFailure(error);
            } else {
                weatherListener.serviceSuccess(channel);
            }
        }
    }.execute(listener);
}

From source file:mc.lib.network.AsyncNetworkHelper.java

public static void getDrawable(final String url, final OnCompleteListener<Drawable> listener) {
    new AsyncTask<Void, Void, Drawable>() {
        @Override/*from www .  j ava  2 s. c  o  m*/
        protected Drawable doInBackground(Void... params) {
            return NetworkHelper.getDrawable(url);
        }

        @Override
        protected void onPostExecute(Drawable res) {
            super.onPostExecute(res);
            listener.complete(res);
        }
    }.execute((Void) null);
}

From source file:com.koodroid.chicken.KooDroidHelper.java

public void checkForUpdateOnBackgroundThread(final MainActivity activity) {
    if (mAlreadyCheckedForUpdates) {
        return;/*ww w . jav  a  2 s . c o  m*/
    }
    mAlreadyCheckedForUpdates = true;
    new AsyncTask<Void, Void, Void>() {

        @Override
        protected Void doInBackground(Void... params) {
            SharedPreferences prefs = activity.getSharedPreferences(KooDroidHelper.class.getName(),
                    Context.MODE_PRIVATE);
            Random random = new Random();
            long interval = random.nextInt(7) + 3; // [3, 10)
            long timestamp = prefs.getLong("LastCheckTimestamp", 0);
            long now = System.currentTimeMillis();
            if ((now - timestamp < interval * 24 * 60 * 60 * 1000) && !DEBUG) {
                return null;
            }
            prefs.edit().putLong("LastCheckTimestamp", now).commit();
            HttpURLConnection urlConnection = null;
            BufferedReader in = null;
            try {

                URL url = new URL(mUpdateUrl);
                urlConnection = (HttpURLConnection) url.openConnection();
                urlConnection.setConnectTimeout(60000);
                urlConnection.setReadTimeout(60000);
                urlConnection.setUseCaches(false);
                urlConnection.setRequestMethod("GET");
                urlConnection.connect();
                if (urlConnection.getResponseCode() == 200) {
                    InputStreamReader reader = new InputStreamReader(urlConnection.getInputStream());
                    in = new BufferedReader(reader);
                    StringBuilder response = new StringBuilder();
                    for (String line = in.readLine(); line != null; line = in.readLine()) {
                        response.append(line);
                    }

                    try {
                        JSONObject jsonObj = new JSONObject(response.toString());
                        mLatestVersion = jsonObj.getString("version_code");
                        mDownloadUrl = jsonObj.getString("download_url");
                    } catch (JSONException e) {
                        System.out.println("Json parse error");
                        e.printStackTrace();
                    }
                    //                        
                    //                        JSONTokener jsonParser = new JSONTokener(response.toString());    
                    //                        // ?json?JSONObject    
                    //                        // ??"name" : nextValue"yuanzhifei89"String    
                    //                        JSONObject person = (JSONObject) jsonParser.nextValue();    
                    //                        // ?JSON?    
                    //                        person.getJSONArray("phone");    
                    //                        person.getString("name");    
                    //                        person.getInt("age");    
                    //                        person.getJSONObject("address");    
                    //                        person.getBoolean("married");    
                    //                        
                    //mLatestVersion = response.toString();
                    int versionCode = Integer.valueOf(mLatestVersion);
                    mUpdateAvailable = Integer.valueOf(mLatestVersion) > Integer
                            .valueOf(getPackageVersionCode(activity));
                }
            } catch (Exception e) {
            } finally {
                if (urlConnection != null) {
                    urlConnection.disconnect();
                }
                if (in != null) {
                    try {
                        in.close();
                    } catch (IOException e) {
                    }
                }
            }
            return null;
        }

        @Override
        protected void onPostExecute(Void result) {
            //maybeShowUpdateDialog(activity);
        }
    }.execute();
}

From source file:ch.gianulli.trelloapi.Card.java

/**
 * Moves this card to a different list. Attention: this operation does not update TrelloList
 * objects with a reference to this card.
 * <p/>//from   w w w  .jav  a  2  s. c  o m
 * This operation is asynchronous and handles errors itself.
 *
 * @param api
 * @param listId
 */
public void moveToListAsync(final TrelloAPI api, final String listId) {
    new AsyncTask<Void, Void, Boolean>() {
        @Override
        protected Boolean doInBackground(Void... voids) {
            try {
                LinkedHashMap<String, String> args = new LinkedHashMap<>();
                args.put("value", listId);
                JSONObject result = api.makeJSONObjectRequest("PUT", "cards/" + mId + "/idList", args, true);
                if (result == null) {
                    Log.i("TrelloAPI", "Error occurred when moving card: null result");
                    return false;
                }
            } catch (TrelloNotAccessibleException | TrelloNotAuthorizedException e) {
                Log.i("TrelloAPI", "Error occurred when moving card: ", e);
                return false;
            }

            return true;
        }

        @Override
        protected void onPostExecute(Boolean successful) {
            if (!successful) {
                Toast.makeText(api.getContext(), "Error: Card could not be moved.", Toast.LENGTH_LONG).show();
            }
        }
    }.execute();
}

From source file:net.w3blog.uniwifi3.activity.ContactActivity.java

public void sendMessage(View v) {
    final String email = txtEmail.getText().toString();
    final String title = txtTitle.getText().toString();
    final String message = txtMessage.getText().toString();
    final String id = Secure.getString(this.getContentResolver(), Secure.ANDROID_ID);

    new AsyncTask<String, Void, Integer>() {
        @Override/*from w  w  w .  j a  v  a2 s .c  om*/
        protected void onPostExecute(Integer result) {
            if (result == HttpStatus.SC_OK) {
                Toast.makeText(ContactActivity.this, R.string.send_sucess, Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(ContactActivity.this, R.string.send_fail, Toast.LENGTH_SHORT).show();
            }
        }

        @Override
        protected Integer doInBackground(String... params) {
            final AndroidHttpClient httpClient = AndroidHttpClient.newInstance("Android");
            final HttpPost postRequest = new HttpPost(
                    "http://droidpatterns.com/uniwifi/api.php?m=contact&f=post");

            List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(4);
            nameValuePairs.add(new BasicNameValuePair("email", params[0]));
            nameValuePairs.add(new BasicNameValuePair("title", params[1]));
            nameValuePairs.add(new BasicNameValuePair("message", params[2]));
            nameValuePairs.add(new BasicNameValuePair("id", params[3]));

            try {
                postRequest.setEntity(new UrlEncodedFormEntity(nameValuePairs));

                HttpResponse response = httpClient.execute(postRequest);
                final int statusCode = response.getStatusLine().getStatusCode();
                return statusCode;
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }

    }.execute(email, title, message, id);

}

From source file:com.perm.DoomPlay.LyricsDialog.java

private void getLyrics() {

    task = new AsyncTask<Void, Void, String>() {
        @Override/*from   ww w.j  av  a2 s.c  om*/
        protected void onPreExecute() {
            super.onPreExecute();
            isLoading = true;
            linearLoading.setVisibility(View.VISIBLE);
        }

        @Override
        protected String doInBackground(Void... params) {
            if (!MainScreenActivity.isRegister)
                return "For getting lyrics is necessary to sign in (vk)";

            try {
                if (title == null)
                    return MainScreenActivity.api.getLyrics(getArguments().getLong(keyLyricsId));
                else {
                    ArrayList<Audio> audios = MainScreenActivity.api.searchAudio(title, 1);
                    if (audios.size() == 1 && audios.get(0).getLyrics_id() != 0)
                        return MainScreenActivity.api.getLyrics(audios.get(0).getLyrics_id());
                    else {
                        return "Sorry , can't find lyrics";
                    }
                }

            } catch (IOException e) {
                e.printStackTrace();
                return e.getMessage();
            } catch (JSONException e) {
                e.printStackTrace();
                return e.getMessage();
            } catch (KException e) {
                e.printStackTrace();
                ((AbstractReceiver) getActivity()).handleKException(e);
                return e.getMessage();
            }
        }

        @Override
        protected void onPostExecute(String s) {
            super.onPostExecute(s);
            isLoading = false;
            linearLoading.setVisibility(View.GONE);
            lyrics = s;
            textView.setText(s);
        }
    };
    task.execute();

}

From source file:eu.trentorise.smartcampus.ac.authenticator.AuthenticatorActivity.java

@Override
protected void setUp() {
    Intent request = getIntent();//from w w  w  .ja  v a 2 s . com
    String authTokenType = request.getStringExtra(Constants.KEY_AUTHORITY) != null
            ? request.getStringExtra(Constants.KEY_AUTHORITY)
            : Constants.AUTHORITY_DEFAULT;
    if (Constants.TOKEN_TYPE_ANONYMOUS.equals(authTokenType)) {
        new AsyncTask<Void, Void, UserData>() {
            private ProgressDialog progress = null;

            protected void onPostExecute(UserData result) {
                if (progress != null) {
                    try {
                        progress.cancel();
                    } catch (Exception e) {
                        Log.w(getClass().getName(), "Problem closing progress dialog: " + e.getMessage());
                    }
                }
                if (result != null && result.getToken() != null) {
                    getAuthListener().onTokenAcquired(result);
                } else {
                    getAuthListener().onAuthFailed("Failed to create anonymous account");
                }
                // TODO
            }

            @Override
            protected void onPreExecute() {
                progress = ProgressDialog.show(AuthenticatorActivity.this, "",
                        AuthenticatorActivity.this.getString(R.string.auth_in_progress), true);
                super.onPreExecute();
            }

            @Override
            protected UserData doInBackground(Void... params) {
                try {
                    return RemoteConnector.createAnonymousUser(Constants.getAuthUrl(AuthenticatorActivity.this),
                            new DeviceUuidFactory(AuthenticatorActivity.this).getDeviceUuid().toString());
                } catch (NameNotFoundException e) {
                    Log.e(Authenticator.class.getName(), "Failed to create anonymous user: " + e.getMessage());
                    return null;
                }
            }
        }.execute();
    } else {
        super.setUp();
    }
}