我正在使用帶有片段的回收器視圖。以下代碼段從 firebase 檢索數據。我還在我的 recyclerview 適配器中實現了 onClickListener（），并希望啟動一個意圖并顯示一個詳細的配置文件視圖。（onClickListener正在工作，因為我可以獲得日志消息）。但是如何使用 intent.putExtra（） 傳遞子密鑰或項目 ID，以便我可以使用該子密鑰或 id 啟動新活動并填充數據？火力基礎結構片段public class DoctorsFragment extends Fragment {private List<Doctors> list;private DoctorsAdapter adapter;private DatabaseReference databaseReference;private ValueEventListener valueEventListener;private SearchView searchView = null;private SearchView.OnQueryTextListener queryTextListener;/** * Use this factory method to create a new instance of * this fragment using the provided parameters. * @return A new instance of fragment DoctorsFragment. */// TODO: Rename and change types and number of parameterspublic static DoctorsFragment newInstance() { return new DoctorsFragment();}@Overridepublic void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setHasOptionsMenu(true); getActivity().setTitle(R.string.nav_menu_doctors);}@Overridepublic View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.blank_fragment, container, false); databaseReference = FirebaseDatabase.getInstance().getReference(); list = new ArrayList<>(); RecyclerView recyclerView = (RecyclerView) view.findViewById(R.id.recycler_view); adapter = new DoctorsAdapter(getContext(), list); RecyclerView.LayoutManager layoutManager = new GridLayoutManager(getContext(), 2); recyclerView.setLayoutManager(layoutManager); recyclerView.addItemDecoration(new GridSpacingItemDecoration(2, dpToPixel(10), true)); recyclerView.setItemAnimator(new DefaultItemAnimator()); recyclerView.setAdapter(adapter); adapter.setmOnItemClickListener(onItemClickListener); asynctask(); return view;}
1 回答
慕慕森
TA貢獻1856條經驗 獲得超17個贊
在您的醫生POJO中再添加一個屬性，這將是ID
public class Doctors {
private String id;
private String name;
private String degree;
...
并更新您的構造函數（同時放置您的 setter 和 getter for id）
public Doctors(String id,String name, String specialty, String thumbnail) {
this.name = name;
this.specialty = specialty;
this.thumbnail = thumbnail;
this.id = id;
}
現在，當您獲取數據時，獲取檢索到的數據的密鑰，這將是您的醫生ID
valueEventListener = new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
for (DataSnapshot snapshot: dataSnapshot.getChildren()) {
String name = snapshot.child("name").getValue(String.class);
String specialty = snapshot.child("specialty").getValue(String.class);
String thumbnail = snapshot.child("thumbnail").getValue(String.class);
String id = snapshot.getKey();
Doctors doctor = new Doctors(id,name, specialty,thumbnail);
list.add(doctor);
adapter.notifyDataSetChanged();
}
}
然后在您的通過中，您的意圖中ID的額外內容onClickListener()
private View.OnClickListener onItemClickListener = new View.OnClickListener() {
@Override
public void onClick(View view) {
RecyclerView.ViewHolder viewHolder = (RecyclerView.ViewHolder) view.getTag();
int position = viewHolder.getAdapterPosition();
Doctors doctor = list.get(position);
Intent intent = new Intent(getActivity(), DoctorProfile.class);
intent.putExtra("id",doctor.getID();
startActivity(intent);
}
};
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