{"id":1529,"date":"2022-08-30T15:17:17","date_gmt":"2022-08-30T15:17:17","guid":{"rendered":"https:\/\/unknownerror.org\/index.php\/2013\/11\/26\/problem-about-ondestroy-collection-of-common-programming-errors\/"},"modified":"2022-08-30T15:17:17","modified_gmt":"2022-08-30T15:17:17","slug":"problem-about-ondestroy-collection-of-common-programming-errors","status":"publish","type":"post","link":"https:\/\/unknownerror.org\/index.php\/2022\/08\/30\/problem-about-ondestroy-collection-of-common-programming-errors\/","title":{"rendered":"problem about ondestroy-Collection of common programming errors"},"content":{"rendered":"<ul>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/65112df84845ce752e1bc9f662acc006?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nspaaarky21<br \/>\nandroid android-service ondestroy<br \/>\nI&#8217;m aware that a Service&#8217;s onDestroy() method may never be called but can someone tell me when such a scenario might occur? I&#8217;m especially interested in whether it&#8217;s possible for a Service to be killed, yet its VM would continue to run.I ask because I have a service that registers ContentObservers in the service&#8217;s onStartCommand() method and unregisters them onDestroy(). If the service&#8217;s onDestroy() method was never called because the whole VM was killed (along with the observers it created,)<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/19a485386fcd0c3d949e7fd5a7efd880?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nMatthew<br \/>\nandroid memory ondestroy<br \/>\nI have looked through a few articles around and notice that sometimes onDestroy() is not called when an app is exiting. Sometimes only the onPause() is called. My whole thing is that when I exit my app with the back button OR the finish() function, everything looks fine. When I attempt to reopen my app, it says:12-14 04:09:59.457: E\/GraphicsJNI(996): VM won&#8217;t let us allocate 3279360 bytesI will paste the entire log as well. The thing is when it reopens, it force closes. After that, I can reopen<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/133978b437b712189938510d2072a137?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nChris<br \/>\njava android exit stop ondestroy<br \/>\nI am trying to avoid using onDestroy and want to keep this as simple as possible, but when I exit the program, I get a Force Close error. Not sure why. Here is the code for the main part of the application. Any suggestions?Main Application Codepublic class Quotes extends Activity implements OnClickListener {ProgressDialog dialog;private WebView webview;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);WebView adsview = (<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/e337de40a5e7645cbda6b8fd45a21651?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nFSX<br \/>\nandroid service backup ondestroy<br \/>\nI am needing help to determine the right approach. I want to make a backup of an internal database to a location in the external storage every time the whole application gets interrupted or terminated\/destroyed. I want to call this method from a central class called Main which extends Application. The reason for that is, that I need to use several activites and I want to call the backup Method only when needed (like described when the whole application gets destroyed or interrupted by another ap<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/7f853ea02cf75369f163af53e34a7350?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nrajath<br \/>\nandroid android-activity ondestroy<br \/>\nI am using a WebView in my app&#8217;s sole Activity. Whenever the user clicks on the BACK button, I override the onKey and process some clean up before calling finish of the activity.I see that once in a while (maybe 1 out of 20 times), onDestroy is not called. And in this case, if I launch my app again, a blank screen comes up. The Activity&#8217;s onCreate is not called, and neither is my overridden Application&#8217;s onCreate.Does anyone know why this happens, and are there any possible solutions?Thanks, Raj<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/be8a6a5c43c12e6f4d2f98da81014c9e?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nDaniel Mendel<br \/>\nandroid live-wallpaper ondestroy<br \/>\ni have just started learning live wallpapers and i made this little thing.the thing is my app compiles with out any problems.as i open it in the phone it shows the wallpaper in the preview but when i click &#8220;set as wallpaper&#8221; it somehow crashes, and returns the front screen, and my wallpaper turns black, but it doesn&#8217;t run it.my guess is the problem is some where along the onDestory() .. public class Strips extends WallpaperService {private StripsEngine engine;@Override public void onCreate() {su<\/li>\n<\/ul>\n<p id=\"rop\"><small>Originally posted 2013-11-26 18:05:20. <\/small><\/p>","protected":false},"excerpt":{"rendered":"<p>spaaarky21 android android-service ondestroy I&#8217;m aware that a Service&#8217;s onDestroy() method may never be called but can someone tell me when such a scenario might occur? I&#8217;m especially interested in whether it&#8217;s possible for a Service to be killed, yet its VM would continue to run.I ask because I have a service that registers ContentObservers [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1529","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/1529","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/comments?post=1529"}],"version-history":[{"count":0,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/1529\/revisions"}],"wp:attachment":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/media?parent=1529"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/categories?post=1529"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/tags?post=1529"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}