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我是Android開發新手。我想讓抽屜在用戶登錄時顯示並用於導航,但在用戶註銷時隱藏。如何才能做到這一點?它目前設置爲關閉抽屜並將偵聽器設置爲空,但只是將切換按鈕更改爲箭頭。謝謝!如何在用戶註銷時隱藏ActionBarDrawerToggle?
DrawerLayout drawer = (DrawerLayout) this.findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
drawer.setDrawerListener(null);
drawer.closeDrawer(Gravity.LEFT);