openFileOutput throws exception
I am writing data to xml files in my android app. I looked up how to properly do file IO and found that I need to use openFileOutput. As far as I can tell there is nothing wrong with my code but it keeps throwing an exception at the line I have a try-catch wrapped around in the following code:
public void writeSearchXML(ArrayList<String> searches, String file)
throws Exception {
// try {
// File newxmlfile = new File(file);
// newxmlfile.createNewFile();
// } catch (Exception e) {
// }
try {
// THE FOLLOWING LINE THROWS AN EXCEPTION EVERY TIME
FileOutputStream out = openFileOutput(file,
Context.MODE_WORLD_WRITEABLE);
} catch (Exception e) {
throw new Exception("Failing on fileoutput stream searches.");
}
FileOutputStream fOut = openFileOutput(file,
Context.MODE_WORLD_READABLE);
// we create a XmlSerializer in order to write xml data
XmlSerializer serializer = Xml.newSerializer();
// we set the FileOutputStream as output for the serializer, using UTF-8
// encoding
serializer.setOutput(fOut, "UTF-8");
// Write <?xml declaration with encoding (if encoding not null) and
// standalone flag (if standalone not null)
serializer.startDocument(null, Boolean.valueOf(true));
// set indentation option
serializer.setFeature(
"http://xmlpull.org/v1/doc/features.html#indent-output", true);
// start a tag called "root"
serializer.startTag(null, "searches");
for (String search : searches) {
开发者_JS百科 serializer.startTag(null, "search");
serializer.text(search);
serializer.endTag(null, "search");
}
// // i indent code just to have a view similar to xml-tree
// serializer.startTag(null, "username");
// serializer.text(username);
// serializer.endTag(null, "username");
// serializer.startTag(null, "password");
// serializer.text(password);
// serializer.endTag(null, "password");
// //serializer.attribute(null, "attribute", "value");
serializer.endTag(null, "searches");
serializer.endDocument();
// write xml data into the FileOutputStream
serializer.flush();
// finally we close the file stream
fOut.close();
}
The only problem in all this code is just that one line. I've searched all over the internet and I haven't been able to fine a solution. What can I do to fix this?
UPDATE: The exception being thrown is a fileNotFound
exception. This leads me to believe that the openFileOutput
function doesn't actually create the file like it says it does in the description. What can I do in Android to create the file without using openFileOutput
?
I found the answer here: android what is wrong with openFileOutput?
openFileOutput has to be called using an activity's context.
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