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:nmtysh.android.test.speedtest.SpeedTestActivity.java

private void runHttpClient() {
    final String url = urlEdit.getText().toString();
    if (url == null || (!url.startsWith("http://") && !url.startsWith("https://"))) {
        list.add("URL error!");
        adapter.notifyDataSetChanged();/*w w  w.ja va  2 s . com*/
        return;
    }
    task = new AsyncTask<Void, Integer, Void>() {
        long startTime;
        ProgressDialog progress;

        // ??
        @Override
        protected void onPreExecute() {
            super.onPreExecute();

            progress = new ProgressDialog(SpeedTestActivity.this);
            progress.setMessage(getString(R.string.progress_message));
            progress.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
            progress.setIndeterminate(false);
            progress.setCancelable(true);
            progress.setOnCancelListener(new OnCancelListener() {
                @Override
                public void onCancel(DialogInterface dialog) {
                    task.cancel(true);
                }
            });
            progress.setMax(10);
            progress.setProgress(0);
            progress.show();

            startTime = System.currentTimeMillis();
        }

        // ???
        @Override
        protected Void doInBackground(Void... params) {
            // 10?????
            for (int i = 0; i < 10; i++) {
                HttpClient client = new DefaultHttpClient();
                InputStreamReader in = null;
                // BufferedReader br = null;
                try {
                    HttpGet get = new HttpGet(url);
                    HttpResponse response = client.execute(get);
                    if (response.getStatusLine().getStatusCode() < 400) {
                        in = new InputStreamReader(response.getEntity().getContent());
                        // br = new BufferedReader(in);
                        // while (br.readLine() != null) {
                        long len = 0;
                        while (in.read() != -1) {
                            len++;
                        }
                        Log.i("HttpClient", len + " Bytes");
                    }
                } catch (IOException e) {
                } finally {
                    /*
                     * if (br != null) { try { br.close(); } catch
                     * (IOException e) { } br = null; }
                     */
                    if (in != null) {
                        try {
                            in.close();
                        } catch (IOException e) {
                        }
                        in = null;
                    }
                    // ?
                    client.getConnectionManager().shutdown();
                    client = null;
                }
                publishProgress(i + 1);
                // Dos????????
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                }
            }
            return null;
        }

        @Override
        protected void onProgressUpdate(Integer... values) {
            super.onProgressUpdate(values);
            if (progress == null) {
                return;
            }
            progress.setProgress(values[0]);
        }

        // 
        @Override
        protected void onPostExecute(Void result) {
            long endTime = System.currentTimeMillis();

            // 
            progress.cancel();
            progress = null;

            list.add("HttpClient:" + url + " " + (endTime - startTime) + "msec/10" + " "
                    + (endTime - startTime) / 10 + "msec");
            adapter.notifyDataSetChanged();
        }

        @Override
        protected void onCancelled() {
            super.onCancelled();
            progress.dismiss();
            progress = null;
        }
    }.execute();
}

From source file:be.evias.cloudLogin.cloudLoginMainActivity.java

/**
 * First thing when the activity is created is to check if
 * the connection to the server is UP./*from www.  j a  v  a  2s  .c  om*/
 * If not finish the activity and tell the user.
 **/
public void checkConnection() {
    new AsyncTask<String, Void, Intent>() {
        @Override
        protected Intent doInBackground(String... params) {
            Bundle data = new Bundle();
            try {
                ServiceBase service = new ServiceBase();
                mIsConnectionUp = service.ping(mContext);
            } catch (Exception e) {
            }

            final Intent res = new Intent();
            res.putExtras(data);
            return res;
        }

        @Override
        protected void onPostExecute(Intent intent) {
            if (mIsConnectionUp == false) {
                showMessage(mContext.getString(R.string.error_network), Toast.LENGTH_LONG);
                setResult(RESULT_OK, intent);
                finish();
            }
        }
    }.execute();
}

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

private void callPhone(final String number) {
    (new AsyncTask<Void, Void, DConnectMessage>() {
        public DConnectMessage doInBackground(final Void... args) {

            try {
                URIBuilder builder = new URIBuilder();
                builder.setProfile(PhoneProfileConstants.PROFILE_NAME);
                builder.setAttribute(PhoneProfileConstants.ATTRIBUTE_CALL);
                builder.addParameter(DConnectMessage.EXTRA_DEVICE_ID, getSmartDevice().getId());
                builder.addParameter(PhoneProfileConstants.PARAM_PHONE_NUMBER, number);
                builder.addParameter(DConnectMessage.EXTRA_ACCESS_TOKEN, getAccessToken());

                HttpResponse response = getDConnectClient().execute(getDefaultHost(),
                        new HttpPost(builder.build()));
                return (new HttpMessageFactory()).newDConnectMessage(response);
            } catch (URISyntaxException e) {
                e.printStackTrace();/*from   ww  w  .j  a  v a  2s .c o m*/
            } 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_phone_result);
            if (result == null) {
                tv.setText("failed");
            } else {
                tv.setText(result.toString());
            }
        }
    }).execute();
}

From source file:com.limewoodmedia.nsdroid.activities.News.java

/**
 * Loads data from the NS API into the overview panels
 *//*from ww  w.  j  av  a2s.  c o m*/
private void loadData() {
    errorMessage = getResources().getString(R.string.general_error);
    // Show loading animation
    final LoadingView loadingView = (LoadingView) findViewById(R.id.loading);
    LoadingHelper.startLoading(loadingView);
    new AsyncTask<Void, Void, Boolean>() {
        StringBuilder html;

        @Override
        protected void onPreExecute() {
            html = new StringBuilder();
        }

        protected Boolean doInBackground(Void... params) {
            try {
                XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
                XmlPullParser xpp = factory.newPullParser();

                HttpGet get = new HttpGet(NEWS_URL);
                HttpClient client = new DefaultHttpClient();
                HttpResponse response = client.execute(get);

                xpp.setInput(response.getEntity().getContent(), "UTF-8");
                String tagName;
                while (xpp.next() != XmlPullParser.END_DOCUMENT) {
                    switch (xpp.getEventType()) {
                    case XmlPullParser.START_TAG:
                        tagName = xpp.getName().toLowerCase();
                        if (tagName.equals("item")) {
                            html.append(parseItem(xpp));
                        } else {
                            Log.w(TAG, "Unknown rss tag: " + tagName);
                        }
                        break;
                    }
                }

                return true;
            } catch (RuntimeException e) {
                e.printStackTrace();
                errorMessage = e.getMessage();
            } catch (XmlPullParserException e) {
                e.printStackTrace();
                errorMessage = e.getMessage();
            } catch (ClientProtocolException e) {
                e.printStackTrace();
                errorMessage = e.getMessage();
            } catch (IOException e) {
                e.printStackTrace();
                errorMessage = e.getMessage();
            }

            return false;
        }

        protected void onPostExecute(Boolean result) {
            // Remove loading animation
            LoadingHelper.stopLoading(loadingView);
            if (result) {
                webView.getSettings().setUseWideViewPort(false);
                webView.getSettings().setLayoutAlgorithm(WebSettings.LayoutAlgorithm.SINGLE_COLUMN);
                webView.loadDataWithBaseURL("http://www.nationstates.net",
                        "<link rel='stylesheet' href='/ns_v1422597706.css'>"
                                + "<style>h2 {color: #008000;}</style>" + html.toString(),
                        "text/html", "utf-8", null);
            } else {
                Toast.makeText(News.this, errorMessage, Toast.LENGTH_SHORT).show();
            }
        }
    }.execute();
}

From source file:weavebytes.com.futureerp.activities.LoginActivity.java

public void SendJsonRequest() {
    new AsyncTask<Void, Void, String>() {
        @Override// w  w w  . j a  va 2s  .c  om
        protected void onPreExecute() {
            super.onPreExecute();
            progress.setMessage("Please Wait..");
            progress.setProgressStyle(ProgressDialog.STYLE_SPINNER);
            progress.setCancelable(true);
            progress.show();
        }

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

            if (isOnline()) {

                HttpClient httpClient = new DefaultHttpClient();
                HttpPost httpPost = new HttpPost(Config.URL_LOGIN);
                List<NameValuePair> nameValuePair = new ArrayList<>();
                nameValuePair.add(new BasicNameValuePair("username", username));
                nameValuePair.add(new BasicNameValuePair("password", password));

                try {
                    httpPost.setEntity(new UrlEncodedFormEntity(nameValuePair));

                } catch (UnsupportedEncodingException e) {
                    return e + "";
                }
                try {
                    HttpResponse response = httpClient.execute(httpPost);
                    //Converting Response To JsonString
                    return ConvertResponse_TO_JSON.entityToString(response.getEntity());
                } catch (ClientProtocolException e) {
                    // Log exception
                    e.printStackTrace();
                } catch (IOException e) {
                    // Log exception
                    e.printStackTrace();
                }
                return "Bad NetWork";
            } else {
                return "Check Your Connection";

            }
        }

        @Override
        protected void onPostExecute(String JsonString) {
            JSONObject jsonobj = null;
            progress.dismiss();
            try {

                jsonobj = new JSONObject(JsonString);
                //Parsing JSON and Checking the error_code (username ot password are correct or not)
                if (jsonobj.getString("error").equals("0")) {
                    Config.U_ID = jsonobj.getString("user_id");
                    Intent intent = new Intent(LoginActivity.this, DashBoardActivity.class);
                    startActivity(intent);
                    finish();
                } else {
                    Toast.makeText(LoginActivity.this, "Invalid User", Toast.LENGTH_SHORT).show();
                }
            } catch (JSONException e) {
                e.printStackTrace();
                //toast(e + " ");
            }
        }
    }.execute();
}

From source file:edu.csh.coursebrowser.CourseActivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_course);
    // Show the Up button in the action bar.
    this.getActionBar().setHomeButtonEnabled(false);
    map_item = new HashMap<String, Course>();
    map = new ArrayList<String>();
    Bundle args = this.getIntent().getExtras();
    this.setTitle(args.getCharSequence("title"));
    try {// ww w .  java  2s.  com
        JSONObject jso = new JSONObject(args.get("args").toString());
        JSONArray jsa = new JSONArray(jso.getString("courses"));
        ListView lv = (ListView) this.findViewById(R.id.course_list);
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, map);
        for (int i = 0; i < jsa.length(); ++i) {
            String s = jsa.getString(i);
            JSONObject obj = new JSONObject(s);
            Course course = new Course(obj.getString("title"), obj.getString("department"),
                    obj.getString("course"), obj.getString("description"), obj.getString("id"));
            addItem(course);
            Log.v("Added", course.toString());
        }
        lv.setAdapter(adapter);
        lv.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
                String s = ((TextView) arg1).getText().toString();
                final Course course = map_item.get(s);
                new AsyncTask<String, String, String>() {
                    ProgressDialog p;

                    protected void onPreExecute() {
                        p = new ProgressDialog(CourseActivity.this);
                        p.setTitle("Fetching Info");
                        p.setMessage("Contacting Server...");
                        p.setCancelable(false);
                        p.show();
                    }

                    protected String doInBackground(String... dep) {
                        String params = "action=getSections&course=" + course.id;
                        Log.v("Params", params);
                        URL url;
                        String back = "";
                        try {
                            url = new URL("http://iota.csh.rit" + ".edu/schedule/js/browseAjax" + ".php");

                            URLConnection conn = url.openConnection();
                            conn.setDoOutput(true);
                            OutputStreamWriter writer = new OutputStreamWriter(conn.getOutputStream());
                            writer.write(params);
                            writer.flush();
                            String line;
                            BufferedReader reader = new BufferedReader(
                                    new InputStreamReader(conn.getInputStream()));

                            while ((line = reader.readLine()) != null) {
                                Log.v("Back:", line);
                                back += line;
                            }
                            writer.close();
                            reader.close();
                        } catch (MalformedURLException e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                            return null;
                        } catch (IOException e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                            p.dismiss();
                            return null;
                        }
                        return back;
                    }

                    protected void onPostExecute(String s) {
                        if (s == null || s == "") {
                            new AlertError(CourseActivity.this, "IO Error!").show();
                            return;
                        }
                        try {
                            JSONObject jso = new JSONObject(s);
                            JSONArray jsa = new JSONArray(jso.getString("sections"));
                        } catch (JSONException e) {
                            e.printStackTrace();
                            new AlertError(CourseActivity.this, "Invalid JSON From Server").show();
                            p.dismiss();
                            return;
                        }
                        Intent intent = new Intent(CourseActivity.this, SectionsActivity.class);
                        intent.putExtra("title", course.title);
                        intent.putExtra("id", course.id);
                        intent.putExtra("description", course.description);
                        intent.putExtra("args", s);
                        startActivity(intent);
                        p.dismiss();
                    }
                }.execute(course.id);
            }

        });

    } catch (JSONException e) {
        // TODO Auto-generated catch block
        new AlertError(this, "Invalid JSON");
        e.printStackTrace();
    }

}

From source file:com.qiqi8226.http.MainActivity.java

private void onBtnPost() {
    new AsyncTask<String, String, Void>() {

        @Override//  w ww.j  a  v  a2  s .  c  o  m
        protected Void doInBackground(String... params) {
            URL url;
            try {
                url = new URL(params[0]);
                URLConnection conn = url.openConnection();

                conn.setDoInput(true);
                conn.setDoOutput(true);
                conn.setUseCaches(false);

                BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(conn.getOutputStream()));
                bw.write("");
                bw.flush();

                BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
                String line;
                while ((line = br.readLine()) != null) {
                    publishProgress(line);
                }
                br.close();
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }

        @Override
        protected void onProgressUpdate(String... values) {
            tv.append(values[0] + "\n");
        }
    }.execute("http://www.baidu.com/");
}

From source file:org.deviceconnect.android.deviceplugin.sonycamera.utils.DConnectUtil.java

/**
 * ??????????.//from   www  .ja v a2 s  . c  om
 * 
 * @param deviceId ??
 * @param body ?
 * @param listener ??
 */
public static void asyncNotifyBody(final String deviceId, final String body,
        final DConnectMessageHandler listener) {
    AsyncTask<Void, Void, DConnectMessage> task = new AsyncTask<Void, Void, DConnectMessage>() {
        @Override
        protected DConnectMessage doInBackground(final Void... params) {
            try {
                DConnectClient client = new HttpDConnectClient();
                HttpPost request = new HttpPost(NOTIFICATION_URI);
                request.setEntity(
                        new StringEntity(DConnectMessage.EXTRA_DEVICE_ID + "=" + deviceId + "&body=" + body));
                HttpResponse response = client.execute(request);
                return (new HttpMessageFactory()).newDConnectMessage(response);
            } catch (IOException e) {
                return new DConnectResponseMessage(DConnectMessage.RESULT_ERROR);
            }
        }

        @Override
        protected void onPostExecute(final DConnectMessage message) {
            if (listener != null) {
                listener.handleMessage(message);
            }
        }
    };
    task.execute();
}

From source file:com.twapime.app.util.AsyncImageLoader.java

/**
 * @param imageUrl/*from w w  w. ja  va 2  s  .  c  o m*/
 * @param imageCallback
 * @return
 */
public Drawable loadDrawable(final String imageUrl, ImageLoaderCallback imageCallback) {
    Drawable drawable = getDrawableFromCache(imageUrl);
    //
    if (drawable != null) {
        return drawable;
    }
    //
    synchronized (callbacks) {
        List<ImageLoaderCallback> callbacksList = callbacks.get(imageUrl);
        //
        if (callbacksList == null) {
            callbacksList = new Vector<ImageLoaderCallback>();
            callbacks.put(imageUrl, callbacksList);
        }
        //
        callbacksList.add(imageCallback);
    }
    //
    if (urlsBeingDownloaded.contains(imageUrl)) {
        return null;
    }
    //
    urlsBeingDownloaded.add(imageUrl);
    //
    new AsyncTask<String, Void, Drawable>() {
        @Override
        protected Drawable doInBackground(String... params) {
            return loadImageFromUrl(imageUrl);
        }

        @Override
        protected void onPostExecute(Drawable drawable) {
            if (drawable != null) {
                addDrawableToCache(imageUrl, drawable);
                //
                synchronized (callbacks) {
                    for (ImageLoaderCallback callback : callbacks.get(imageUrl)) {
                        callback.imageLoaded(drawable, imageUrl);
                    }
                    //
                    callbacks.remove(imageUrl);
                }
            }
            //
            urlsBeingDownloaded.remove(imageUrl);
        }
    }.execute();
    //
    return null;
}

From source file:com.piusvelte.sonet.core.PhotoUploadService.java

private void start(Intent intent) {
    if (intent != null) {
        String action = intent.getAction();
        if (Sonet.ACTION_UPLOAD.equals(action)) {
            if (intent.hasExtra(Accounts.TOKEN) && intent.hasExtra(Statuses.MESSAGE)
                    && intent.hasExtra(Widgets.INSTANT_UPLOAD)) {
                String place = null;
                if (intent.hasExtra(Splace))
                    place = intent.getStringExtra(Splace);
                String tags = null;
                if (intent.hasExtra(Stags))
                    tags = intent.getStringExtra(Stags);
                // upload a photo
                Notification notification = new Notification(R.drawable.notification, "uploading photo",
                        System.currentTimeMillis());
                notification.setLatestEventInfo(getBaseContext(), "photo upload", "uploading",
                        PendingIntent.getActivity(PhotoUploadService.this, 0,
                                (Sonet.getPackageIntent(PhotoUploadService.this, About.class)), 0));
                ((NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE)).notify(NOTIFY_ID,
                        notification);/*from  w w  w  .jav  a  2s  . com*/
                (new AsyncTask<String, Void, String>() {

                    @Override
                    protected String doInBackground(String... params) {
                        String response = null;
                        if (params.length > 2) {
                            Log.d(TAG, "upload file: " + params[2]);
                            HttpPost httpPost = new HttpPost(String.format(FACEBOOK_PHOTOS, FACEBOOK_BASE_URL,
                                    Saccess_token, mSonetCrypto.Decrypt(params[0])));
                            MultipartEntity entity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
                            File file = new File(params[2]);
                            ContentBody fileBody = new FileBody(file);
                            entity.addPart(Ssource, fileBody);
                            HttpClient httpClient = SonetHttpClient
                                    .getThreadSafeClient(getApplicationContext());
                            try {
                                entity.addPart(Smessage, new StringBody(params[1]));
                                if (params[3] != null)
                                    entity.addPart(Splace, new StringBody(params[3]));
                                if (params[4] != null)
                                    entity.addPart(Stags, new StringBody(params[4]));
                                httpPost.setEntity(entity);
                                response = SonetHttpClient.httpResponse(httpClient, httpPost);
                            } catch (UnsupportedEncodingException e) {
                                Log.e(TAG, e.toString());
                            }
                        }
                        return response;
                    }

                    @Override
                    protected void onPostExecute(String response) {
                        // notify photo success
                        String message = getString(response != null ? R.string.success : R.string.failure);
                        Notification notification = new Notification(R.drawable.notification,
                                "photo upload " + message, System.currentTimeMillis());
                        notification.setLatestEventInfo(getBaseContext(), "photo upload", message,
                                PendingIntent.getActivity(PhotoUploadService.this, 0,
                                        (Sonet.getPackageIntent(PhotoUploadService.this, About.class)), 0));
                        ((NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE)).notify(NOTIFY_ID,
                                notification);
                        stopSelfResult(mStartId);
                    }

                }).execute(intent.getStringExtra(Accounts.TOKEN), intent.getStringExtra(Statuses.MESSAGE),
                        intent.getStringExtra(Widgets.INSTANT_UPLOAD), place, tags);
            }
        }
    }
}