jul jul - 1 month ago 23
Android Question

How to clear arguments in Fragment?

I have an

AudioPlayerFragment
to which I pass some url with setArguments().

If I have an
url
key in the
getArguments()
of my instance of
AudioPlayerFragment
, I start a service that plays the audio stream. If there was already a stream playing, I stop it and start it again with the new stream.

If there is no arguments, I do nothing.

My problem is that the arguments are kept with the instance, so when I get back to it,
getArguments()
returns the latest arguments set, if no new have been set.

So after reading them, I try to set the arguments to null with

setArguments(null);


But I get

Java.lang.IllegalStateException: fragment already active


How can I clear the arguments then?

Answer

Make sure you are reading getArguments() in onCreate() method of the fragment. Once the fragment was created, when going back you souldn't pass trough onCreate(), so you shouldn't be able to read again the arguments.

If this still does not work, you could make use of a boolean flag and read the arguments only once.

Something like this:

if(!argumentsRead){

    // read arguments

    argumentsRead = true;
}