Fragment中 監聽Android 返回按鈕事件

 @Override
    public void onResume() {
        super.onResume();
        getView().setFocusableInTouchMode(true);
        getView().requestFocus();
        getView().setOnKeyListener(new View.OnKeyListener() {
            @Override
            public boolean onKey(View view, int i, KeyEvent keyEvent) {
                if(keyEvent.getAction() == KeyEvent.ACTION_DOWN && i == KeyEvent.KEYCODE_BACK){
                    //Toast.makeText(getActivity(), "按了返回鍵", Toast.LENGTH_SHORT).show();
                    return true;
                }
                Utils.Log("按了返回鍵");
                return false;
            }
        });
    }