Aaron created CB-9236:
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Summary: File plugin takes 500+ms on iOS, causing web thread to
lock until done
Key: CB-9236
URL: https://issues.apache.org/jira/browse/CB-9236
Project: Apache Cordova
Issue Type: Improvement
Components: iOS, Plugin File
Affects Versions: 5.0.0
Environment: iPad mini retina, iPad air 2. Both running iOS 8.3
Reporter: Aaron
Hello,
I'm using the file API to store a gif created by the yahoo gifshot plugin. When
the gifshot callback fires, i see in the xcode logs:
2015-06-23 12:07:42.467 AppName[5446:2010157] THREAD WARNING: ['File'] took
'12.512939' ms. Plugin should use a background thread.
2015-06-23 12:07:43.094 AppName[5446:2010157] THREAD WARNING: ['File'] took
'566.554932' ms. Plugin should use a background thread
This tends to interrupt interactions in the webview, such as typing into a
form, tapping buttons, canvas animations, etc. I'm wondering if it's possible
to get this running a separate thread. Note that a couple apps ive seen this in
have been for iOS only. I do not have the means to run this on android & test,
because it is using a custom plugin only built for iOS. So i cannot make a test
case there.
Here's the respected javascript code:
{code:javascript}
window.requestFileSystem(window.LocalFileSystem.PERSISTENT, 0, function
(fileSys) {
var myFolderApp = 'AppFolder';
fileSys.root.getDirectory(myFolderApp, { create: true, exclusive: false
}, function (directory) {
fileSys.root.getFile(directory.fullPath + "/" + Date.now() + ".gif", {
create: true, exclusive: false }, function (entry) {
entry.createWriter(function (writer) {
writer.onwriteend = function () {
_this.processingAGif = false;
if (InteractionStore.getByUUID(interactionUUID)) {
MediaStore.saveForUUID(interactionUUID, entry.fullPath);
if (InteractionStore.getByUUID(interactionUUID).complete) {
InteractionStore.commitInteraction(interactionUUID);
}
else {
InteractionStore.setUUIDToProcessed(interactionUUID);
}
}
};
writer.write(_this.dataURItoBlob(_this.imagebase64));
});
});
});
});
{code}
The InteractionStore and MediaStore are just memory stores for small bits of
data. Inconsequential at this point. The commitInteraction writes the paths to
the websql store.
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