配接器 這是我的配接器類。我正在從 Firebase 實時資料庫獲取資料。當我單擊 recyclerView 專案時，我希望該專案資料顯示在另一個片段 TextView 上。
public class MyAdapter_2 extends RecyclerView.Adapter<MyAdapter_2.MyViewholder> {
Context context;
ArrayList<Model> list;
public MyAdapter_2(Context context, ArrayList<Model> list) {
this.context = context;
this.list = list;
}
@NonNull
@Override
public MyAdapter_2.MyViewholder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(context).inflate(R.layout.fetch_data, parent, false);
return new MyViewholder(v);
}
@Override
public void onBindViewHolder(@NonNull MyAdapter_2.MyViewholder holder, int position) {
// Chat_Fragment chat_fragment = new Chat_Fragment();
Model model = list.get(position);
holder.speach.setText(model.getSpeach());
holder.remove.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
FirebaseAuth mAuth;
String userId;
mAuth = FirebaseAuth.getInstance();
userId = mAuth.getCurrentUser().getUid();
AlertDialog.Builder builder = new AlertDialog.Builder(holder.speach.getContext());
builder.setTitle("Are you sure !");
builder.setMessage("Deleted data cant be undo");
builder.setPositiveButton("Delete", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
FirebaseDatabase.getInstance().getReference()
.child("User " userId)
.child(model.getKey())
.removeValue().addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
if (task.isSuccessful()) {
Toast.makeText(v.getContext(), "Deleted", Toast.LENGTH_SHORT).show();
}
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(v.getContext(), "Failed " e, Toast.LENGTH_SHORT).show();
}
});
}
}).setNegativeButton("cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.show();
}
});
}
@Override
public int getItemCount() {
return list.size();
}
public class MyViewholder extends RecyclerView.ViewHolder {
TextView speach, fortest;
TextView remove;
public MyViewholder(@NonNull View itemView) {
super(itemView);
speach = itemView.findViewById(R.id.savedDialogue);
remove = itemView.findViewById(R.id.remove);
}
}
}
BottomSheetFragment 這是我設定我的 RecyclerView 的片段。
public class Bottom_recycler extends BottomSheetFragment {
RecyclerView recyclerView2;
FirebaseAuth mAuth;
DatabaseReference root;
MyAdapter_2 MyAdapter_2;
ArrayList<Model> list = new ArrayList<>();
String userId;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_bottom_recycler, container, false);
mAuth = FirebaseAuth.getInstance();
userId = mAuth.getCurrentUser().getUid();
recyclerView2 = view.findViewById(R.id.recyclerView2);
recyclerView2.setLayoutManager(new LinearLayoutManager(getContext()));
MyAdapter_2 = new MyAdapter_2(getContext(), list);
recyclerView2.setHasFixedSize(true);
recyclerView2.setAdapter(MyAdapter_2);
root = FirebaseDatabase.getInstance().getReference().child("User " userId);
root.keepSynced(true);
root.addValueEventListener(new ValueEventListener() {
@SuppressLint("NotifyDataSetChanged")
@Override
public void onDataChange(@NonNull DataSnapshot snapshot) {
list.clear();
for (DataSnapshot snapshot1 : snapshot.getChildren()) {
Model model = snapshot1.getValue(Model.class);
list.add(model);
}
MyAdapter_2.notifyDataSetChanged();
}
@Override
public void onCancelled(@NonNull DatabaseError error) {
Toast.makeText(getContext(), "" error, Toast.LENGTH_SHORT).show();
}
});
return view;
}
}
片段 這是片段，我想要那個 RecyclerView 資料。并在我的文本視圖中顯示。當用戶單擊 RecyclerView 專案時。
public class bok_Fragment extends Fragment {
TextView bokData;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_bok_, container, false);
bokData = view.findViewById(R.id.bokData);
return view;
}
}
uj5u.com熱心網友回復：
這很簡單。在您的配接器類中撰寫以下代碼
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(context, bok_Fragment.class)
intent.putExtra("fortest",list.get(position).getFortest());
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
}
});
在要顯示資料的 Fragment 中撰寫此代碼
String anyname= getIntent().getStringExtra("fortest");
bokData.setText(anyname)
轉載請註明出處，本文鏈接：https://www.uj5u.com/qiye/507355.html
標籤：爪哇 安卓工作室 安卓片段 android-recyclerview