我在我的片段中调用了KeyEvent.KEYCODE_BACK,但出现了奇怪的情况,它被调用了两次。我不知道为什么会这样。以下是我的片段代码:
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
myFragmentView = inflater.inflate(R.layout.folders, container, false);
myFragmentView.setFocusableInTouchMode(true);
myFragmentView.requestFocus();
myFragmentView.setOnKeyListener(new View.OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
if (keyCode == KeyEvent.KEYCODE_BACK) {
String parent = file.getParent().toString();
file = new File(parent);
File list[] = file.listFiles();
myList.clear();
for (int i = 0; i < list.length; i++) {
myList.add(list[i].getName());
}
Toast.makeText(getActivity(), parent, Toast.LENGTH_LONG)
.show();
setListAdapter(new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_1, myList));
}
return true;
}
});
return myFragmentView;
}