ios - Core Bluetooth State Restoration -


i working on app reacts on disconnects of peripherals , trying adopt ne state preservation , restoration introduced in ios 7.

i did documentation says, means:

  1. i added background mode centrals.

  2. i instantiate central manager same unique identifier.

  3. i implemented centralmanager:willrestorestate: method.

when app moves background kill in appdelegate callback kill(getpid(), sigkill);. (core bluetooth state preservation , restoration not working, can't relaunch app background)

when disconnect peripheral removing battery app being waked expected , launchoptions[uiapplicationlaunchoptionsbluetoothcentralskey] contains correct identifier centralmanager:willrestorestate: not called. if disconnect peripheral method gets called.

this how have it:

- (bool)application:(uiapplication *)application didfinishlaunchingwithoptions:(nsdictionary *)launchoptions  {      nsarray *peripheralmanageridentifiers = launchoptions[uiapplicationlaunchoptionsbluetoothperipheralskey];      if (peripheralmanageridentifiers) {          // we've restored, create _manager on main queue         _manager = [[cbperipheralmanager alloc] initwithdelegate:self                                                           queue:dispatch_get_global_queue(dispatch_queue_priority_default, 0)                                                         options:@{cbperipheralmanageroptionrestoreidentifierkey:@"youruniqueidentifier"}];      } else {          // not restored create normal         manager = [[cbperipheralmanager alloc] initwithdelegate:self                                                           queue:nil                                                         options:@{cbperipheralmanageroptionrestoreidentifierkey:@"youruniqueidentifier"}];      } return yes; }

and then:

- (void)peripheralmanager:(cbperipheralmanager *)peripheral          willrestorestate:(nsdictionary *)dict {       // advertisement data being advertised when app terminated ios     _advertisementdata = dict[cbperipheralmanagerrestoredstateadvertisementdatakey];      nsarray *services = dict[cbperipheralmanagerrestoredstateserviceskey];      // loop through services, have 1 service if have more you'll need check against uuid strings of each     (cbmutableservice *service in services) {          _primaryservice = service;          // loop through characteristics         (cbmutablecharacteristic *characteristic in _primaryservice.characteristics) {              if ([characteristic.uuid.uuidstring isequaltostring:characteristic_uuid]) {                  _primarycharacteristic = characteristic;                  nsarray *subscribedcentrals = characteristic.subscribedcentrals;                  // loop through centrals subscribed when app terminated ios                 (cbcentral *central in subscribedcentrals) {                      // add them array                     [_centrals addobject:central];                  }             }         }     } }

Comments

Post a Comment

Popular posts from this blog

apache - Remove .php and add trailing slash in url using htaccess not loading css -

i have add following code htaccess file removing .php extension , add trailing slash urls. worked fine reduced page loading speed , css code not loading @ all. pages ugly. please help rewriteengine on rewritebase / ## hide .php extension snippet # externally redirect /dir/foo.php /dir/foo rewritecond %{the_request} ^[a-z]{3,}\s([^.]+)\.php [nc] rewriterule ^ %1/ [r,l] # add trailing slash rewritecond %{request_filename} !-f rewritecond %{request_uri} !/$ rewriterule . %{request_uri}/ [l,r=301] # internally forward /dir/foo /dir/foo.php rewritecond %{request_filename} !-d rewritecond %{request_filename}.php -f rewriterule ^(.*?)/?$ $1.php [l] we can rewrite urls using .htaccess files. before writing in .htaccess files need verify kind of server using. can check server adding a <?php phpinfo(); ?> in php page. ensure mod_rewrite module enabled in apache server. can identified checking phpinfo included page. common methods used url rewriting follows ...
Read more

javascript - jQuery show full size image on click -

pretty self explanatory not workking . i want display full image when user click on image... yes know there tons of plugins but i want keep simple. any idea ? css : .full { display: none; width: 500px; height: 500px; margin-left: 100px; margin-top: -300px; position: fixed; background-color: #f00; z-index: 6; } .thumbnail { width: 50px; height: 50px; } html: <img class="thumbnail" src="http://4.bp.blogspot.com/-uhbdp2esxng/txneptvi92i/aaaaaaaaaky/upfqis7zto0/s1600/rihanna-wallpaper.jpg"> jquery: $(document).ready(function() { $('.thumbnail').on('click', function() { var img = $('<img />',{src:this.src,'class':'full'}); $('.full').html(img).show(); console.log('done!'); }); }); try looking how jquery works. $(document).ready(function() { $('.thumbnail').on('click', function(...
Read more