通過單擊一個片段中的按鈕從一個片段重定向到另一個片段,我還必須更改底部導航圖標。我的第一個片段`public class WishList extends Fragment {public static WishList newInstance() { WishList fragment = new WishList(); return fragment;}@Overridepublic void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); }@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){ View rootView= inflater.inflate(R.layout.fragment_wish_list, container, false); Button btncart=(Button) rootView.findViewById(R.id.btncart); btncart.setOnClickListener(new View.OnClickListener(){ @Override public void onClick(View v) { FragmentTransaction fr=getFragmentManager().beginTransaction(); fr.replace(R.id.frame_layout,new MyCart()); fr.commit(); } }); return rootView;}}我的第二個片段public class MyCart extends Fragment {public static MyCart newInstance() { MyCart fragment = new MyCart(); return fragment;}@Overridepublic void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);}@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView= inflater.inflate(R.layout.fragment_my_cart, container, false); Button paynow = (Button) rootView.findViewById(R.id.btnpaynow); paynow.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { Intent intent = new Intent(getActivity(), PaymentMethod.class); startActivity(intent); } });我必須通過單擊心愿單片段中的按鈕 btncart 重定向到 mycart 片段,頁面被重定向,但底部導航圖標仍保留在心愿單圖標上,而不是更改為 Mycart 圖標。圖片是 愿望清單截圖MyCart 截圖我該如何解決這個問題?
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