Fragment 点击返回键 做返回操作

    @Override
    public void onResume() {
        super.onResume();
        getFocusX();
    }

 /**
     * 返回键重定义
     */
    private void getFocus() {
        getView().setFocusableInTouchMode(true);
        getView().requestFocus();
        getView().setOnKeyListener(new View.OnKeyListener() {
            @Override
            public boolean onKey(View v, int keyCode, KeyEvent event) {
                if (event.getAction() == KeyEvent.ACTION_UP && keyCode == KeyEvent.KEYCODE_BACK) {
                    if (bottom.getVisibility() == View.VISIBLE) {
					//返回操作 实现自己的业务逻辑
                        ManageInitialize();
                        return true;
                    }

                }
                return false;
            }
        });
    }