问题
New to Phonegap and having a hard time understanding the FileWriter function. I am trying to get this example to work on iOS6 but I'm stuck with the error message
<script type="text/javascript" charset="utf-8" src="cordova-2.3.0.js"></script>
<script type="text/javascript" charset="utf-8">
var fileWriter;
function onNotesLoad() {
window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, onFSComplete, fail);
}
function onFSComplete(fileSystem) {
// Load the notes.txt file, create it if it doesn't exist
fileSystem.root.getFile("notes.txt", {create: true}, onFileEntryComplete, fail);
}
function onFileEntryComplete(fileEntry) {
// set up the fileWriter
fileEntry.createWriter(onFileWriterComplete, fail);
}
function onFileWriterComplete(fileWriter) {
// store the fileWriter in a
// global variable so we have it
// when the user presses save
fileWriter = fileWriter;
}
function saveNotes() {
// make sure the fileWriter is set
if (fileWriter != null) {
// create an oncomplete write function
// that will redirect the user
fileWriter.onwrite = function(evt) {
alert("Saved successfully");
$.mobile.changePage("index.html");
};
var form = document.getElementsByTagName('form')[0].elements;
var notes = form.notes.value;
// save the notes
fileWriter.write(notes);
} else {
alert("There was an error trying to save the file");
}
return false;
}
function fail(error) {
alert(error.code);
}
</script>
HTML:
<body>
<div data-role="page" id="notes-page">
<div data-role="header" data-position="inline">
<a href="index.html" data-icon="delete">Cancel</a>
<h1>Your Thoughts?</h1>
<a onClick="return saveNotes()" href="#"
data-icon="check" data-theme="b">Save</a>
</div>
<form action="index.html" method="post">
<textarea name="notes" rows="30" cols="10"></textarea>
</form>
</div>
</body>
回答1:
The onwrite handler is called as a progress event. I believe you will want to hook to the onwriteend handler.
来源：https://stackoverflow.com/questions/14329010/cant-get-phonegaps-filewriter-to-work