Example usage for android.os AsyncTask cancel

Introduction

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

Prototype

public final boolean cancel(boolean mayInterruptIfRunning) 

Source Link

Document

Attempts to cancel execution of this task.

Usage

From source file:com.androidbase.activities.BaseActivity.java

public void cancelAsyncTask(AsyncTask<?, ?, ?> task) {
    if (task != null) {
        task.cancel(true);
    }
}

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From source file:simple.android.SimpleFragment.java

@Override
public void onDestroy() {
    if (getActivity().isFinishing()) {
        ArrayList<AsyncTask<Void, Void, Void>> tasks = mState.getAsyncTasks();
        for (AsyncTask<Void, Void, Void> asyncTask : tasks) {
            asyncTask.cancel(false); // TODO: should this be true?
        }//from   ww w .  j a va 2s. c o  m
    }
    super.onDestroy();
}

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From source file:com.opemind.cartspage.client.android.book.SearchBookContentsActivity.java

@Override
protected void onPause() {
    AsyncTask<?, ?, ?> oldTask = networkTask;
    if (oldTask != null) {
        oldTask.cancel(true);
        networkTask = null;//ww  w. j  ava  2 s . c om
    }
    super.onPause();
}

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From source file:com.opemind.cartspage.client.android.book.SearchBookContentsActivity.java

private void launchSearch() {
    String query = queryTextView.getText().toString();
    if (query != null && !query.isEmpty()) {
        AsyncTask<?, ?, ?> oldTask = networkTask;
        if (oldTask != null) {
            oldTask.cancel(true);
        }//  w ww.  j  a v  a 2  s .  com
        networkTask = new NetworkTask();
        networkTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, query, isbn);
        headerView.setText(R.string.msg_sbc_searching_book);
        resultListView.setAdapter(null);
        queryTextView.setEnabled(false);
        queryButton.setEnabled(false);
    }
}

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From source file:com.yattatech.dbtc.activity.GenericFragmentActivity.java

protected void cancelAsyncTask(AsyncTask<?, ?, ?> asyncTask) {
    Debug.d(mTag, "cancelAsyncTask");
    if ((asyncTask != null) && (asyncTask.getStatus() != Status.FINISHED)) {
        try {//from w  w  w.j a  v  a  2  s .  c o m
            asyncTask.cancel(true);
        } catch (Exception e) {
            Debug.e(mTag, "Failed:", e);
        }
    }
}

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From source file:com.concentricsky.android.khanacademy.app.SignInActivity.java

/**
 * Cancel tasks on pause. /*from ww w  .  j  a va2s  .c  o m*/
 */
@Override
protected void onPause() {
    super.onPause();
    // Show no activity transition animation; we want to appear as if we're the same activity as the underlying ShowProfileActivity.
    overridePendingTransition(0, 0);

    for (@SuppressWarnings("rawtypes")
    AsyncTask t : currentTasks) {
        t.cancel(true);
    }
}

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From source file:com.numenta.taurus.TaurusBaseActivity.java

/**
 * Cancel background task previously tracked via {@link #trackBackgroundTask(android.os.AsyncTask)}
 *
 * @param task The task to cancel/* w  w  w  .j ava  2 s.c o m*/
 */
public void cancelTrackedBackgroundTask(AsyncTask task) {
    if (_taskList != null && task != null) {
        task.cancel(true);
        _taskList.remove(task);
    }
}

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From source file:org.xwiki.android.authenticator.auth.AuthenticatorActivity.java

private void clearAsyncTask() {
    Iterator<AsyncTask<Void, Void, Object>> iterator = mAsyncTasks.iterator();
    while (iterator.hasNext()) {
        AsyncTask<Void, Void, Object> asyncTask = iterator.next();
        if (asyncTask != null && !asyncTask.isCancelled()) {
            asyncTask.cancel(true);
        }//  ww  w. j  av  a 2 s .com
    }
    mAsyncTasks.clear();
}

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From source file:com.example.httpjson.AppEngineClient.java

public String getTokenFromServer() {
    String s = null;/*from w w  w .j av a 2 s . co m*/
    try {

        URL uri = new URL("https://rtonames.sprintlabs.io/token");

        Map<String, List<String>> headers = new HashMap<String, List<String>>();

        String key = "Authorization";
        String authStr = "6eece178-9fcf-45b7-ab50-08b8066daabe:e494a4e72b6f7c7672b74d311cbabf2672be8c24c9496554077936097195a5ac69b6acd11eb09a1ae07a40d2e7f0348d";
        String encoding = Base64.encodeToString(authStr.getBytes(), Base64.DEFAULT);
        encoding = encoding.replace("\n", "").replace("\r", "");

        System.out.println(encoding);
        List<String> value = Arrays.asList("Basic " + encoding);

        headers.put(key, value);

        AppEngineClient aec1 = new AppEngineClient();
        Request request = aec1.new GET(uri, headers);

        AsyncTask<Request, Void, Response> obj = new asyncclass().execute(request);

        Response response = obj.get();

        obj.cancel(true);

        obj = null;

        String body = null;
        try {
            body = new String(response.body, "UTF-8");
        } catch (UnsupportedEncodingException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }

        JSONObject tokenjson = AppEngineClient.getJSONObject(body);

        if (tokenjson.has("token")) {
            try {
                s = tokenjson.getString("token");
            } catch (JSONException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

        }

    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    return s;
}

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From source file:com.numenta.taurus.TaurusBaseActivity.java

@Override
protected void onPause() {
    Log.i(TAG, "{TAG:ANDROID.APP.PAUSE}");
    super.onPause();
    LocalBroadcastManager.getInstance(this).unregisterReceiver(_isRefreshingReceiver);

    // Cancel pending tasks
    if (_taskList != null) {
        AsyncTask task;
        while ((task = _taskList.poll()) != null) {
            if (isFinishing()) {
                task.cancel(true);
            }/*from w  ww. ja  v  a 2s. c om*/
        }
    }
}

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