multithreading - How To Properly Update A Widget In Android 8.0 - Oreo - API 26 -


let's have widget app has targetsdkversion set 26. widget takes between 100ms , 10s update. of time under 1s. before android o, if onupdate() called on appwidgetprovider, launch background service update widget. however, android o returns illegalstateexception if attempt behavior. obvious solution of starting foreground service seems extreme measure done in under 10s 99% of time.

possible solutions

  • start foreground service update widget. annoy user notification gone in 10s.
  • use jobscheduler schedule job possible. widget may or may not updated while.
  • attempt work in broadcast receiver. lock ui thread other apps. yuck.
  • attempt work in widget receiver. lock ui thread other apps. yuck.
  • abuse gcm background service running. lot of work , feels hacky.

i don't of above solutions. i'm missing something.

(even more frustrating app loaded memory system calling onupdate(). don't see how loading app memory call onupdate(), not giving app 1s update widget off ui thread saving battery life.)

you don't indicate update trigger mechanism is. seem concerned latency ("your widget may or may not updated while"), going assume concern tied user interaction app widget, such tapping button.

use jobscheduler schedule job possible. widget may or may not updated while.

this variation on "use jobintentservice", afaik recommended solution sort of scenario.

other options include:

  • use getforegroundservice() pendingintent. this, "pinky swear" service call startforeground() within anr timeframe. if work takes longer few seconds, call startforeground() ensure android doesn't cranky. should minimize number of time foreground notification appears. and, if user tapped button , still busy doing work few seconds later, want show notification or otherwise let user know asked still in progress.

  • use goasync() on broadcastreceiver, work in context of receiver while not tying main application thread. haven't tried android 8.0+, ymmv.


Comments

Post a Comment

Popular posts from this blog

neo4j - finding mutual friends in a cypher statement starting with three or more persons -

Image
i trying build cypher statement neo4j know 2-n starting nodes name , need find node (if any) can reached of starting nodes. at first tought similar "mutual friend" situation handled (start1)-[*..2]->(main)<-[*..2]-(start2) in case have more 2 starting points around 6 know name. so puzzled how can include third, fourth , on node cypher able find commmon root amongst them. in above example neo4j website need path starting 'dilshad', 'becky' , 'cesar' check if have common friend (anders) excluding 'filipa' , 'emil' not friends of three. so far create statement programmatically looks like match (start1 {name:'person1'}), (start2 {name:'person2'}), (start3 {name: 'person3'}), (main) (start1)-[*..2]->(main) , (start2)-[*..2]->(main) , (start3)-[*..2]->(main) return distinct main but wondering if there more elegant / efficient way in cypher possibly use list of names parameter ...
Read more

php - How to remove letter in front of the word laravel -

Image
based on picture above result of var_dump() , dd() of same variable ,when var_dump() , apostrophe (') symbol in black diamond of question mark , when dd() same variable , apostrophe can seen letter 'b' appear in front of words what want can me result : loreal's sdn bhd and @ same time want remove special character ( excluding these 4 symbols (-) ,(_) ,('),(,) ) simply escape special character resolve issue. mysqli_real_escape_string resolve issue. $name = mysqli_real_escape_string($request()->user); or use addslashes function() $name = addslashes($request()->user);
Read more

minify - Minimizing css files -

i want know how css files can minimized. currently, using external sites css minifier compress css files. however, after removing whitespaces, comments, etc, file sizes reduced 10-15%. how frameworks bootstrap manage make minimized versions kilobytes. as example, css is: body { background-color: #ff0; } the reduction goes 28 bytes 22 bytes other css files have lot more characters still smaller this. actually minifying code means it's remove thing code white space characters new line characters comments block delimiters it reduces amount of code has transferred on web , speed site load fastly.but unreadable format.
Read more