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https://issues.apache.org/jira/browse/CB-14197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16551218#comment-16551218
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ASF GitHub Bot commented on CB-14197:
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macdonst commented on issue #237: CB-14197: (all) Fix for createFile/writeFile
silently failing to send 'write' action
URL:
https://github.com/apache/cordova-plugin-file/pull/237#issuecomment-406715606
Thanks for the PR @wfairclough, good catch.
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> createFile/writeFile does not consistently execute the 'write' action
> resulting in files of size 0
> --------------------------------------------------------------------------------------------------
>
> Key: CB-14197
> URL: https://issues.apache.org/jira/browse/CB-14197
> Project: Apache Cordova
> Issue Type: Bug
> Components: cordova-plugin-file
> Reporter: Will Fairclough
> Priority: Major
>
> Occasionally when calling the *createFile* API the *write* action does not
> get called. It was not very consistent though and it is very hard to
> reproduce. It seems as though the *onload* event was not firing on the
> fileReader in the write method resulting in the file never getting written
> and no callbacks being fired.
> {code:java}
> if (data instanceof File || (!isProxySupportBlobNatively && supportsBinary &&
> data instanceof Blob)) {
> var fileReader=new FileReader();
> /* eslint-enable no-undef */
> fileReader.onload=function () {
> // Call this method again, with the arraybuffer as argument
> FileWriter.prototype.write.call(that, this.result, true/*
> isPendingBlobReadResult */);
> };
> ...
> }
> {code}
> We found we would notice the issue more consistently when running the app in
> the Android emulator subsequent times in a row with the command:
> {code:java}
> $ cordova run android{code}
> We fixed this by requiring the FileReader module:
> [https://github.com/suitespot/cordova-plugin-file/commit/2a0da7f1a43e88b801ee70a3462c3df829f4c927]
> With this change we have not noticed the issue anymore.
> I also believe this *ionic-native* issue is related to this:
> [https://github.com/ionic-team/ionic-native/issues/2067#issuecomment-403600570]
>
>
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