How about:
onBackPressed() {
File newDirectory = mCurrentDirectory.getParentFile();
if (newDirectory != null) {
mCurrentDirectory = newDirectory;
reloadFileList(mCurrentDirectory);
}
}
-- K
2014-06-18 23:16 GMT+04:00 'RLScott' via Android Developers <
[email protected]>:
> I need to implement a File Explorer as an activity within my app. One of
> the functions of such an activity is the ability to recursively navigate up
> and down the directory tree. I was planning on doing that by having the
> current instance of the File Explorer start another instance of the File
> Explorer when then the user taps on a directory entry. I was going to have
> each instance storing its place in the tree (as a path name) so that I
> could "pop" this stack all the way to the beginning. But then I remembered
> the Activity life cycle, and the fact that Android can destroy any activity
> that is not visible. So that would trash my stack, if the stack was stored
> as instance data for each instance of the File Explorer. Do I have that
> right? And if so, what is a preferable way to manage a stack of nested
> instances of a File Explorer activity?
>
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