No working from iOS 12.2 #419

gondp · 2019-02-02T17:57:24Z

After updating to iOS 12.2 the application ends just run. If I delete the plugin it works correctly

Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[ setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key _alwaysRunsAtForegroundPriority.'

Baadier-Sydow · 2019-02-04T10:35:02Z

I'm experiencing this too after testing the application on 12.2

mciekurs2 · 2019-02-07T13:42:54Z

Can confirm, having the same problem.

BuddyLReno · 2019-02-20T13:17:13Z

it looks like it's because the plugin is using a private api which is no longer allowed: ionic-team/cordova-plugin-ionic-webview#293

T3chTobi · 2019-02-20T23:55:48Z

is there a solution to use background mode in iOS 12.2?

BuddyLReno · 2019-02-21T12:53:36Z

@CodingAnonymous As of right now, no. My team is now actively moving away from Ionic and Cordova because of this issue. We've been meaning to start going fully native for awhile, but this issue cemented our path.

mlynch · 2019-02-21T21:14:25Z

@BuddyLReno The issue on Ionic’s end has been fixed in latest webview plugin. Also, We don’t maintain this background plugin

Hao-Axon · 2019-02-21T22:22:17Z

We are experiencing the same problem. We cannot just let our app crash on the new version of the system. Please let us know if this issue can be fixed soon (@katzer ). Or any possible solutions are welcome.

BuddyLReno · 2019-02-21T23:57:00Z

@mlynch yes but the solution doesn't restore original functionality.

Without the background mode working as before, we're unable to save the progress through a users audio. Our app plays 40+ minute podcasts so it's important so save the progress about every ten seconds while the phone is locked.

iowayankee · 2019-02-23T21:00:57Z

Same problem. To fix I went to the plugin in Xcode.
Removing lines APPBackgroundMode.m:266 & 267:
[obj setValue:[NSNumber numberWithBool:YES] <--- remove!
forKey:[APPBackgroundMode wkProperty]]; <--- remove!

I was able to get a build working. Haven't tested beyond that.

Hao-Axon · 2019-02-25T20:15:49Z

@iowayankee Can the plugin still work properly after your change?

KinG-InFeT · 2019-03-09T18:34:28Z

Can confirm, having the same problem.

wynngd · 2019-03-18T10:19:59Z

Encountered the same issue.Thanks @iowayankee! Your fix works. However, I still need to check the impact of the fix in background mode...

sergey-mohov · 2019-03-18T10:22:36Z

Try in file src\ios\APPBackgroundMode.m replace following lines

+ (NSString*) wkProperty
{
    NSString* str = @"X2Fsd2F5c1J1bnNBdEZvcmVncm91bmRQcmlvcml0eQ==";
    NSData* data  = [[NSData alloc] initWithBase64EncodedString:str options:0];

    return [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
}

with

+ (NSString*) wkProperty
{
    NSString* str = @"YWx3YXlzUnVuc0F0Rm9yZWdyb3VuZFByaW9yaXR5";
    NSData* data  = [[NSData alloc] initWithBase64EncodedString:str options:0];

    return [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
}

edwardbrosens · 2019-03-25T21:39:39Z

Try in file src\ios\APPBackgroundMode.m replace following lines

+ (NSString*) wkProperty
{
    NSString* str = @"X2Fsd2F5c1J1bnNBdEZvcmVncm91bmRQcmlvcml0eQ==";
    NSData* data  = [[NSData alloc] initWithBase64EncodedString:str options:0];

    return [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
}

with

+ (NSString*) wkProperty
{
    NSString* str = @"YWx3YXlzUnVuc0F0Rm9yZWdyb3VuZFByaW9yaXR5";
    NSData* data  = [[NSData alloc] initWithBase64EncodedString:str options:0];

    return [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
}

This actually worked for me.

Basically what you did was changing the base64 encoded string from:
_alwaysRunsAtForegroundPriority
to
alwaysRunsAtForegroundPriority

AthiraWD · 2019-03-29T05:38:32Z

Same problem. To fix I went to the plugin in Xcode.
Removing lines APPBackgroundMode.m:266 & 267:
[obj setValue:[NSNumber numberWithBool:YES] <--- remove!
forKey:[APPBackgroundMode wkProperty]]; <--- remove!

I was able to get a build working. Haven't tested beyond that.

Wow! works good

katzer#419 (comment)

Apply fix from katzer#419 (comment)

Reference: katzer#419 (comment)

ghenry22 · 2019-04-10T08:33:57Z

@BuddyLReno I submitted a PR to the Ionic Webview repository that should restore the background functionality, is backward compatible and has no issues with app store submissions that I have seen as long as you have valid background capability set and actual valid activity when in background (as it was previously). Give it a try if you like.

Note that this was a wildly used hack, which stopped working. This is a quick fix, but it's not future proof. See: katzer#419 See: ionic-team/cordova-plugin-ionic-webview#293

donkeytronkilla · 2019-04-10T17:56:57Z

@ghenry22 can you link your PR?

BorntraegerMarc · 2019-04-11T07:50:19Z

link for @ghenry22's PR ionic-team/cordova-plugin-ionic-webview#343

silvanavlima · 2019-04-16T21:10:31Z

Can someone confirm if it worked?

silvanavlima · 2019-04-16T21:11:23Z

@gpartida It worked?

donkeytronkilla · 2019-04-16T23:08:00Z

@silvanavlima it passed our QA on testflight, we havent submitted the app for public release but we should be doing this soon.

silvanavlima · 2019-04-16T23:12:35Z

@gpartida but the background mode is working as before? or lost functionality?

donkeytronkilla · 2019-04-17T00:11:21Z

For my use case it works as before. I think this fix is about using the new name for an API which is still private not tapping into a more legit way to handle background functionality, so this is still bad and could easily just disappear one day, but it fixes my app from being completely broken today.

silvanavlima · 2019-04-17T17:46:48Z

@BuddyLReno the background mode plugin does not work? my audios stop when it's in the background. Is it the same with you?

KinG-InFeT · 2019-04-18T23:57:50Z

+1

joaowebdec · 2019-04-23T17:48:35Z

+1

Fixes the hack for the private setting alwaysRunsAtForegroundPriority see: katzer#419 see: ionic-team/cordova-plugin-ionic-webview#293

rodrigovrm · 2019-04-24T07:55:08Z

I did what seems to be quickest way to get it working.

It just doesn't make sense that it also works on iOS 11.4. I tested in a simulator. Does anyone know why it works in earlier versions of iOS?

sts-ryan-holton · 2019-05-12T10:57:21Z

Has anyone got a fix for this not working on iOS 12?

GloomyStranger · 2019-05-13T12:17:23Z

@BuddyLReno The issue on Ionic’s end has been fixed in latest webview plugin. Also, We don’t maintain this background plugin

So maybe you have suggestion how we can make app runs backgroud

IwonGunawan · 2019-05-25T08:56:28Z

Same problem. To fix I went to the plugin in Xcode.
Removing lines APPBackgroundMode.m:266 & 267:
[obj setValue:[NSNumber numberWithBool:YES] <--- remove!
forKey:[APPBackgroundMode wkProperty]]; <--- remove!

I was able to get a build working. Haven't tested beyond that.

thank @iowayankee , your save my time.
this worked for me.

kapilSoni101 · 2019-05-28T07:45:53Z

@iowayankee sir tried but got same error again ?

16am · 2019-05-29T13:24:02Z

None of the solutions worked for me.
I had to uninstall backgroundMode completely as, nor condition based on this.platform.is('android') works.

ZaLiTHkA · 2019-07-17T14:55:49Z

@BuddyLReno The issue on Ionic’s end has been fixed in latest webview plugin. Also, We don’t maintain this background plugin

@mlynch I understand that nobody is maintaining this plugin anymore, but I've tried with both cordova-plugin-ionic-webview 2.5.1 (because we actually still need to support iOS 10 with our app) as well as the latest 4.1.1 release, but I still can't get this plugin to work on our iOS 12.3 iPad. Not sure about 12.2 because I don't have any devices with that version, but it does still work on our iOS 12.0 iPad.

From your message above, I'm assuming the latest version of cordova-plugin-background-mode should work if I use a release of cordova-plugin-ionic-webview that provides the required API methods. Or am I missing something here? There are so many forks of this plugin, I'm honestly not sure where to start..

edit: alrighty, got it working with the latest of both the 2.x and 4.x releases of cordova-ionic-webview by switching over to @iowayankee's fork over at https://github.com/iowayankee/cordova-plugin-background-mode

I'm happy, my boss is happy, and life is good again. (:

kapilSoni101 · 2019-08-23T15:29:09Z

hi team
anybody fixed above issue in iOS 12.2?

edento · 2019-08-24T18:22:14Z

@ZaLiTHkA Have you actually tested the background activity? this fix fixes the app crash, but all http requests that are triggered by location change (which is working properly) when the app is in the background fail:

{"headers":{"normalizedNames":{},"lazyUpdate":null,"headers":{}},"status":0,"statusText":"Unknown Error","url":null,"ok":false,"name":"HttpErrorResponse","message":"Http failure response for (unknown url): 0 Unknown Error","error":{"isTrusted":true}}

I have tried updating cordova-plugin-ionic-webview to 2.5.1 and it leads to same error. Same code works for iOS 12.1.

Any leads?

ZaLiTHkA · 2019-08-24T18:59:20Z

@edento, if you have a look at the edit to my previous message, you might notice I've actually switched to a fork of a fork of this project..

this is just one of the unfortunate side-effects of dealing with Cordova plugins in general, most of them tend to either get ignored for long periods of time or abandoned completely, so when one dev with good intentions forks the project to fix something, their PR never gets back to the original. and so this one has (currently) 752 forks. O.o

that said, I'm not sure about handling things like HTTP calls while the app is in the background. in our case, we have a socket connection with observables that give me data when the data source updates, so it's not an action I need to explicitly call. I do know that the webview engine does limit the frequency of function calls made in background mode, but I'm not sure if it affects them in any other ways.

if you're trying to explicitly fetch data from a remote source while your app is in the background, perhaps you might benefit from moving that "fetch" logic into a service worker? haven't played with them much myself, but as I understand these are specifically designed to operate "in the background" behind the main app thread, so they aren't restricted by the same means.

beyond that, I'm not really sure what else to suggest.

edento · 2019-08-24T19:07:32Z

@ZaLiTHkA You're right, I missed the fork link. Anyway I tested it and unfortunately its not working for my case. I want to make a post request with the new user location to do some server calculation, but the request never makes it to the server =\

Thank you for the response anyway :)

edento · 2019-08-24T21:16:31Z

@ZaLiTHkA well, eventually changing the HTTP package resolved this issue. Changed angulars package HttpClient (@angular/common/http) to @ionic-native/http/ngx.

kapilSoni101 · 2019-08-25T04:34:29Z

@edento: sir what is realtion of above issue with HttpClient plz explain me.

@ZaLiTHkA: sir are u fixed issue after change version of
Crdova-plugin-ionic-webview

ZaLiTHkA · 2019-08-25T06:19:51Z

@edento: sir what is realtion of above issue with HttpClient plz explain me.

I don't think it relates to this issue specifically, that's just the module Eden was trying to use while their app was in background mode..

@ZaLiTHkA: sir are u fixed issue after change version of
Crdova-plugin-ionic-webview

nope, not by changing the webview plugin (doing that made no difference), I "fixed" mine by changing to this fork of the background mode plugin.

note: I see there was actually an update to this project recently, so have you tried using version 0.7.3 yet?

kapilSoni101 · 2019-08-25T07:49:19Z

@ZaLiTHkA : ok sir I tried above mentioned fork and tell me one more thing sir why its not working in IOS 10 version also.

kapilSoni101 · 2019-08-26T04:53:28Z

@iowayankee and @sergey-mohov : sir i tried ur solution but not worked for me?

try solution katzer#419

dylanvdmerwe mentioned this issue Mar 27, 2019

Conflict with iOS 12.2 wkwebview #438

Closed

HZYou mentioned this issue Mar 28, 2019

ionic3 应用程序在iOS 12.2 上因cordova-plugin-background-mode引起的闪退 HZYou/ionic-work-issues#3

Open

asharaky added a commit to asharaky/cordova-plugin-background-mode that referenced this issue Apr 1, 2019

apply fix for app crash for iOS 12.2

c5becab

katzer#419 (comment)

TheBosZ added a commit to TheBosZ/cordova-plugin-background-mode that referenced this issue Apr 1, 2019

Fix for iOS 12.2

c575bec

Apply fix from katzer#419 (comment)

tessarini added a commit to nitryxgit/cordova-plugin-background-mode that referenced this issue Apr 2, 2019

ARM-3086. Fixing crash on ios 12.2

a25c734

Reference: katzer#419 (comment)

ghenry22 mentioned this issue Apr 10, 2019

App stops rendering after being in the background on iOS 12.2 Beta ionic-team/cordova-plugin-ionic-webview#293

Closed

qkdreyer mentioned this issue Apr 24, 2019

fix: add compatibility for iOS >= 12.2 #447

Open

kapilSoni101 mentioned this issue Aug 26, 2019

IOS error : Terminating app due to uncaught exception 'NSUnknownKeyException' in ionic3? #467

Open

lucas-t5 pushed a commit to lucas-t5/cordova-plugin-background-mode that referenced this issue Oct 3, 2019

Apply Fix from edwardBrosens katzer#419

a4130c2

agriboss added a commit to agriboss/cordova-plugin-background-mode that referenced this issue Oct 8, 2020

Update APPBackgroundMode.m

4b69d8f

try solution katzer#419

No working from iOS 12.2 #419

No working from iOS 12.2 #419

Comments

gondp commented Feb 2, 2019

Baadier-Sydow commented Feb 4, 2019

mciekurs2 commented Feb 7, 2019

BuddyLReno commented Feb 20, 2019

T3chTobi commented Feb 20, 2019

BuddyLReno commented Feb 21, 2019

mlynch commented Feb 21, 2019

Hao-Axon commented Feb 21, 2019

BuddyLReno commented Feb 21, 2019

iowayankee commented Feb 23, 2019

Hao-Axon commented Feb 25, 2019

KinG-InFeT commented Mar 9, 2019

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