ios - Background Task works on Simulator only -


background

i have created sample timer app counts specific value down zero. label displays how time left.

every time nstimer (1s interval) calls countdownsecs() prints how many seconds left , executes println("countdownsecs()"). when countdown has reached 0 seconds sends local push notification.
when running in simulator works , 5 minutes stays in background , continuously prints seconds left , countdownsecs().
on other hand, when running on actual device (iphone 4s, ios 8.1.3 , ios 8.3) stops when entering background. (it worked before on 1 w/ ios 8.3. thought might because iphone 4s can not handle iphone 4s simulator works fine.)

code

in appdelegate's applicationdidenterbackground() have following code uilocalnotification:

var alarmtime: nsdate = nsdate() var app: uiapplication = uiapplication.sharedapplication() var notifyalarm: uilocalnotification = uilocalnotification()  //counterall contains total amount of seconds         alarmtime.datebyaddingtimeinterval(nsdate.timeintervalsincereferencedate()) notifyalarm.firedate = nsdate(timeintervalsincenow: counterall) notifyalarm.timezone = nstimezone.defaulttimezone() notifyalarm.repeatinterval = nscalendarunit(0) notifyalarm.soundname = "time's up.m4a" notifyalarm.alertbody = "time's up! - timer has ended." app.schedulelocalnotification(notifyalarm)

question

can change fix issue?

thanks in advance :)

by default, nstimer won't work in background in actual devices. works in simulators only. however, can execute background tasks uiapplications method beginbackgroundtaskwithexpirationhandler, apple has set hard limit background execution (180 seconds if remember correctly).

it advisable use uilocalnotifications instead of background tasks.


Comments

Post a Comment

Popular posts from this blog

javascript - Bootstrap Popover: iOS Safari strange behaviour -

i looking through twitter bootstrap documentation, , i'm interested in implementing dismissible popover when button clicked. here example bootstrap's docs: http://getbootstrap.com/javascript/#dismiss-on-next-click when press "dismissible popover" button os x safari browser works fine. when access same link above ios safari, button not work. is, popover not dismissed on click. why button not working ios safari? the example linked using data-trigger="focus" attribute. try changing data-trigger="click" . <a tabindex="0" class="btn btn-lg btn-danger" role="button" data-toggle="popover" data-trigger="click" title="dismissible popover" data-content="and here's amazing content. it's engaging. right?">dismissible popover</a>
Read more

Magento/PHP - Get phones on all members in a customer group -

i working on custom magento extension. working around adminhtml part , i've created custom form there. here form code: <?php class vivasindustries_smsnotification_block_adminhtml_sms_sendmass_edit_form extends mage_adminhtml_block_widget_form { public function _preparelayout() { $extensionpath = mage::getmoduledir('js', 'vivasindustries_smsnotification'); $head = $this->getlayout()->getblock('head'); $head->addjs('jquery.js'); $head->addjs('vivas.js'); return parent::_preparelayout(); } protected function _prepareform() { $form = new varien_data_form(array( 'id' => 'edit_form', 'action' => $this->geturl('*/*/save', array('id' => $this->getrequest()->get...
Read more

session - Logging Out Using PHP -

i have seen other programs regarding can't seem make work. doing wrong? want achieve after user logged out, going previous pages become restricted. i have 3 php files: 1. sample.php - main page username , password filled in 2. successful.php - user's page after logging in 3. logout.php - destorys session hinder user access pages after logging out sample.php </html> <form action="" method="post"> <table> <tr> <td>username:</td> <td>password:</td> </tr> <tr> <td><input type="text" name="username"></td> <td><input type="password" name="password"></td> </tr> <tr> <td><input type="submit" value="submit" name="submit"></td> </tr> </table> </form> </html> <?php $servername = "localhost"; $username = ...
Read more