Example usage for android.os AsyncTask AsyncTask

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:com.github.secondsun.catfactsdemo.networking.CatFactFetcherService.java

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    new AsyncTask<Intent, Void, Void>() {

        @Override//ww w  .  j  a  va2s  .  c  o  m
        protected Void doInBackground(Intent... params) {
            if (params != null && params.length > 0) {
                onHandleIntent(params[0]);
            }
            return null;
        }
    }.execute(intent);
    return START_STICKY;
}

---

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

public static void getBitmap(final String url, final OnCompleteListener<Bitmap> listener) {
    new AsyncTask<Void, Void, Bitmap>() {
        @Override/*  www  .ja va2s.  co  m*/
        protected Bitmap doInBackground(Void... params) {
            return NetworkHelper.getBitmap(url);
        }

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

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From source file:com.google.bazel.example.android.activities.MainActivity.java

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    if (id == R.id.action_ping) {
        new AsyncTask<String, Void, String>() {
            public static final int READ_TIMEOUT_MS = 5000;
            public static final int CONNECTION_TIMEOUT_MS = 2000;

            private String inputStreamToString(InputStream stream) throws IOException {
                StringBuilder result = new StringBuilder();
                try {
                    BufferedReader reader = new BufferedReader(new InputStreamReader(stream, "UTF-8"));
                    String line;// w w  w. ja va 2s  .  c  o  m
                    while ((line = reader.readLine()) != null) {
                        result.append(line);
                    }
                } finally {
                    stream.close();
                }
                return result.toString();
            }

            private HttpURLConnection getConnection(String url) throws IOException {
                URLConnection urlConnection = new URL(url).openConnection();
                urlConnection.setConnectTimeout(CONNECTION_TIMEOUT_MS);
                urlConnection.setReadTimeout(READ_TIMEOUT_MS);
                return (HttpURLConnection) urlConnection;
            }

            @Override
            protected String doInBackground(String... params) {
                String url = params[0];
                HttpURLConnection connection = null;
                try {
                    connection = getConnection(url);
                    return new JSONObject(inputStreamToString(connection.getInputStream()))
                            .getString("requested");
                } catch (IOException e) {
                    Log.e("background", "IOException", e);
                    return null;
                } catch (JSONException e) {
                    Log.e("background", "JSONException", e);
                    return null;
                } finally {
                    if (connection != null) {
                        connection.disconnect();
                    }
                }
            }

            @Override
            protected void onPostExecute(String result) {
                TextView textView = (TextView) findViewById(R.id.text_view);
                if (result == null) {
                    Toast.makeText(MainActivity.this, getString(R.string.error_sending_request),
                            Toast.LENGTH_LONG).show();
                    textView.setText("???");
                    return;
                }
                textView.setText(result);
            }
        }.execute("http://10.0.2.2:8080/boop");
        return true;
    }

    return super.onOptionsItemSelected(item);
}

---

From source file:org.starfishrespect.myconsumption.android.tasks.StatValuesUpdater.java

public void refreshDB() {

    AsyncTask<Void, List, Void> task = new AsyncTask<Void, List, Void>() {
        @Override//from w ww .  ja v a  2s . com
        protected Void doInBackground(Void... params) {
            DatabaseHelper db = SingleInstance.getDatabaseHelper();
            RestTemplate template = new RestTemplate();
            HttpHeaders httpHeaders = CryptoUtils.createHeadersCurrentUser();
            ResponseEntity<StatDTO[]> responseEnt;
            template.getMessageConverters().add(new MappingJacksonHttpMessageConverter());

            try {
                for (SensorData sensor : db.getSensorDao().queryForAll()) {
                    // Stats
                    String url = String.format(SingleInstance.getServerUrl() + "stats/sensor/%s",
                            sensor.getSensorId());

                    responseEnt = template.exchange(url, HttpMethod.GET, new HttpEntity<>(httpHeaders),
                            StatDTO[].class);
                    StatDTO[] statsArray = responseEnt.getBody();
                    List<StatDTO> stats = new ArrayList<>(Arrays.asList(statsArray));

                    ObjectMapper mapper = new ObjectMapper();

                    try {
                        String json = mapper.writeValueAsString(stats);
                        String key = "stats_" + sensor.getSensorId();

                        int id = db.getIdForKey(key);
                        KeyValueData valueData = new KeyValueData(key, json);
                        valueData.setId(id);

                        LOGD(TAG, "writing stat in local db: " + json);
                        db.getKeyValueDao().createOrUpdate(valueData);

                    } catch (IOException e) {
                        LOGD(TAG, "Cannot create stats " + stats.toString(), e);
                    }

                }
            } catch (SQLException e) {
                LOGD(TAG, "Cannot create stats ", e);
            } catch (ResourceAccessException | HttpClientErrorException e) {
                LOGE(TAG, "Cannot access server ", e);
            }
            return null;
        }

        @Override
        protected void onPostExecute(Void aVoid) {
            if (statUpdateFinishedCallback != null) {
                statUpdateFinishedCallback.onStatUpdateFinished();
            }
        }
    };

    task.execute();
}

---

From source file:org.deviceconnect.android.uiapp.fragment.profile.VibrationProfileFragment.java

/**
 * Vibration???.// w  w w .jav  a 2  s .  co m
 * @param pattern ?
 */
private void sendVibration(final CharSequence pattern) {
    (new AsyncTask<Void, Void, DConnectMessage>() {
        public DConnectMessage doInBackground(final Void... args) {
            String p = null;
            if (pattern != null && pattern.length() > 0) {
                p = pattern.toString();
            }

            try {
                URIBuilder builder = new URIBuilder();
                builder.setProfile(VibrationProfileConstants.PROFILE_NAME);
                builder.setAttribute(VibrationProfileConstants.ATTRIBUTE_VIBRATE);
                builder.addParameter(DConnectMessage.EXTRA_DEVICE_ID, getSmartDevice().getId());
                if (p != null) {
                    builder.addParameter(VibrationProfileConstants.PARAM_PATTERN, p);
                }
                builder.addParameter(DConnectMessage.EXTRA_ACCESS_TOKEN, getAccessToken());

                HttpResponse response = getDConnectClient().execute(getDefaultHost(),
                        new HttpPut(builder.build()));
                return (new HttpMessageFactory()).newDConnectMessage(response);
            } catch (URISyntaxException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }

        @Override
        protected void onPostExecute(final DConnectMessage result) {
            if (getActivity().isFinishing()) {
                return;
            }

            TextView tv = (TextView) getView().findViewById(R.id.fragment_vibration_result);
            if (result == null) {
                tv.setText("failed");
            } else {
                tv.setText(result.toString());
            }
        }
    }).execute();
}

---

From source file:com.intel.iotkitlib.http.HttpDeleteTask.java

public CloudResponse doAsync(final String url, final HttpTaskHandler taskHandler) {
    asyncTask = new AsyncTask<String, Void, CloudResponse>() {
        @Override/*from  w  w  w.  j av a 2 s .  c om*/
        protected CloudResponse doInBackground(String... urls) {
            return doSync(urls[0]);
        }

        protected void onPostExecute(CloudResponse response) {
            // Done on UI Thread
            if (response != null && taskHandler != null) {
                taskHandler.taskResponse(response.code, response.response);
            }
        }
    };
    asyncTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, url);
    return new CloudResponse(true, "Successful execute " + url);
}

---

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

@Override
public void onResume() {
    super.onResume();

    if (VkAlbumsActivity.albums == null && !isLoading) {
        new AsyncTask<Void, Void, Void>() {
            @Override/*from  w w  w .  jav a2  s  .c o  m*/
            protected void onPreExecute() {
                super.onPreExecute();
                linearLoading.setVisibility(View.VISIBLE);
                isLoading = true;
            }

            @Override
            protected Void doInBackground(Void... params) {
                try {
                    VkAlbumsActivity.albums = MainScreenActivity.api.getAudioAlbums(Account.account.user_id,
                            null, SettingActivity.getPreference("countvkall"));

                } catch (IOException e) {
                    isLoading = false;
                    ((AbstractReceiver) getActivity()).showException(e);
                    cancel(false);
                } catch (JSONException e) {
                    isLoading = false;
                    ((AbstractReceiver) getActivity()).showException(e);
                    cancel(false);
                } catch (KException e) {
                    isLoading = false;
                    ((AbstractReceiver) getActivity()).handleKException(e);
                    cancel(false);
                }
                return null;
            }

            @Override
            protected void onPostExecute(Void aVoid) {
                super.onPostExecute(aVoid);
                listView.setAdapter(new DialogAddAdapter());
                linearLoading.setVisibility(View.GONE);
                isLoading = false;
            }
        }.execute();
    } else if (!isLoading) {
        listView.setAdapter(new DialogAddAdapter());
    }
}

---

From source file:ca.rmen.android.poetassistant.wotd.Wotd.java

private static void enableWotd(final Context context, final Dictionary dictionary) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        WotdJob.schedule(context);/*from w  w w.  j  a va 2 s .com*/
    } else {
        WotdAlarm.schedule(context);
    }
    new AsyncTask<Void, Void, Void>() {

        @Override
        protected Void doInBackground(Void... voids) {
            notifyWotd(context, dictionary);
            return null;
        }
    }.execute();
}

---

From source file:com.ubikod.urbantag.UrbanTagApplication.java

@Override
protected void onApplicationProcessCreate() {
    Log.i(UrbanTag.TAG, "Launching App !");

    /* re initiate wifi message display */
    SharedPreferences pref = getApplicationContext().getSharedPreferences("URBAN_TAG_PREF",
            Context.MODE_PRIVATE);
    pref.edit().putBoolean("notifiedWifi", false).commit();

    /* Fetch tags list */
    AsyncTask<Void, Void, List<Tag>> updateTagList = new AsyncTask<Void, Void, List<Tag>>() {

        @Override/*from  ww w .  j a  va2  s  .c  o m*/
        protected List<Tag> doInBackground(Void... v) {
            List<Tag> res = new ArrayList<Tag>();
            HttpClient client = new DefaultHttpClient();
            HttpGet request = new HttpGet(UrbanTag.API_URL + ACTION_FETCH_TAGS_LIST);
            Log.i(UrbanTag.TAG, "Fetching tags list on : " + request.getURI().toString());
            try {
                HttpResponse response = client.execute(request);
                BufferedReader rd = new BufferedReader(
                        new InputStreamReader(response.getEntity().getContent()));

                String textResponse = "";
                String line = "";
                while ((line = rd.readLine()) != null) {
                    textResponse += line;
                }
                Log.i(UrbanTag.TAG, "Received :" + textResponse);
                JSONArray jsonTagsArray = new JSONArray(textResponse);

                for (int i = 0; i < jsonTagsArray.length(); i++) {
                    Tag t = TagManager.createTag(jsonTagsArray.getJSONObject(i));
                    if (t != null) {
                        res.add(t);
                    }
                }
            } catch (ClientProtocolException cpe) {
                Log.e(UrbanTag.TAG, cpe.getMessage());
            } catch (IOException ioe) {
                Log.e(UrbanTag.TAG, ioe.getMessage());
            } catch (JSONException je) {
                Log.e(UrbanTag.TAG, je.getMessage());
            }

            return res;
        }

        @Override
        protected void onPostExecute(List<Tag> list) {
            TagManager tagManager = new TagManager(new DatabaseHelper(getApplicationContext(), null));
            if (list.size() > 0)
                tagManager.update(list);
        }
    };

    updateTagList.execute();
}

---

From source file:eu.faircode.netguard.ServiceJob.java

@Override
public boolean onStartJob(JobParameters params) {
    Log.i(TAG, "Start job=" + params.getJobId());

    new AsyncTask<JobParameters, Object, Object>() {

        @Override//from   www. ja v  a  2 s .c  o m
        protected JobParameters doInBackground(JobParameters... params) {
            Log.i(TAG, "Executing job=" + params[0].getJobId());

            HttpsURLConnection urlConnection = null;
            try {
                String android_id = Settings.Secure.getString(getContentResolver(), Settings.Secure.ANDROID_ID);
                JSONObject json = new JSONObject();

                json.put("device", Util.sha256(android_id, ""));
                json.put("product", Build.DEVICE);
                json.put("sdk", Build.VERSION.SDK_INT);
                json.put("country", Locale.getDefault().getCountry());

                json.put("netguard", Util.getSelfVersionCode(ServiceJob.this));
                try {
                    json.put("store", getPackageManager().getInstallerPackageName(getPackageName()));
                } catch (Throwable ex) {
                    Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
                    json.put("store", null);
                }

                for (String name : params[0].getExtras().keySet())
                    json.put(name, params[0].getExtras().get(name));

                urlConnection = (HttpsURLConnection) new URL(cUrl).openConnection();
                urlConnection.setConnectTimeout(cTimeOutMs);
                urlConnection.setReadTimeout(cTimeOutMs);
                urlConnection.setRequestProperty("Accept", "application/json");
                urlConnection.setRequestProperty("Content-type", "application/json");
                urlConnection.setRequestMethod("POST");
                urlConnection.setDoInput(true);
                urlConnection.setDoOutput(true);

                OutputStream out = new BufferedOutputStream(urlConnection.getOutputStream());
                out.write(json.toString().getBytes()); // UTF-8
                out.flush();

                int code = urlConnection.getResponseCode();
                if (code != HttpsURLConnection.HTTP_OK)
                    throw new IOException("HTTP " + code);

                InputStreamReader isr = new InputStreamReader(urlConnection.getInputStream());
                Log.i(TAG, "Response=" + Util.readString(isr).toString());

                jobFinished(params[0], false);

                if ("rule".equals(params[0].getExtras().getString("type"))) {
                    SharedPreferences history = getSharedPreferences("history", Context.MODE_PRIVATE);
                    history.edit().putLong(params[0].getExtras().getString("package") + ":submitted",
                            new Date().getTime()).apply();
                }

            } catch (Throwable ex) {
                Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
                jobFinished(params[0], true);

            } finally {
                if (urlConnection != null)
                    urlConnection.disconnect();

                try {
                    Thread.sleep(1000);
                } catch (InterruptedException ignored) {
                }
            }

            return null;
        }
    }.execute(params);

    return true;
}

---

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