[GitHub] awerlang commented on issue #49: CB-12815: (ios) Fix bug nativeCallback not executed when app is in background

[GitBox <gi...@apache.org>]

awerlang commented on issue #49: CB-12815: (ios) Fix bug nativeCallback not executed when app is in background
URL: https://github.com/apache/cordova-plugin-wkwebview-engine/pull/49#issuecomment-422885954
 
 
   > 
   > 
   > @jcesarmobile see the [JIRA Issue](https://issues.apache.org/jira/browse/CB-12815?focusedCommentId=16013887&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16013887). `process.nextTick`, `Promises` and `setTimeout` put the code into a the queue for the next process tick. This preserves the existing setTimeout behaviour that Apple has apparently suppressed for setTimeout.
   
   This is incorrect, the behavior is not preserved.
   
   Keep in mind that the code:
   
   ```
   Promise.resolve(cordova.callbackFromNative(callbackId, success, status, args, keepCallback));
   ```
   
   is the same as:
   
   ```
   const cb = cordova.callbackFromNative(callbackId, success, status, args, keepCallback);
   Promise.resolve(cb);
   ```
   
   And equivalent to:
   
   ```
   const cb = cordova.callbackFromNative(callbackId, success, status, args, keepCallback);
   setTimeout(function() {}, 0);
   ```
   
   To maintain the same behavior do this:
   
   ```
   Promise.resolve().then(function () {
       cordova.callbackFromNative(callbackId, success, status, args, keepCallback);
   });
   ```
   

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