在适配器中创建自定义对话框
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【中文标题】在适配器中创建自定义对话框【英文标题】：Create Custom Dialog in an Adapter 【发布时间】：2021-05-09 05:28:09 【问题描述】：我正在尝试显示一个点击卡片的自定义对话框（我使用 recyclerview 和 firebase）。我有一个适配器，其中有 onClick 方法。我想在其中放置自定义对话框，以便在单击卡片时将其打开。
这里是 ArticoloAdapter.java
public class ArticoloAdapter extends RecyclerView.Adapter<ArticoloAdapter.VersionVH>
private List<Articolo> listaArticoli;
private Context mCtx;
public ArticoloAdapter(Context mCtx, List<Articolo> listaArticoli)
this.mCtx = mCtx;
this.listaArticoli = listaArticoli;
@NonNull
@Override
public ArticoloAdapter.VersionVH onCreateViewHolder(@NonNull ViewGroup parent, int viewType)
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.articolo_stock, parent, false);
return new VersionVH(view);
@Override
public void onBindViewHolder(@NonNull final ArticoloAdapter.VersionVH holder, int position)
final Articolo articolo = listaArticoli.get(position);
holder.nome.setText(articolo.getNome());
if(articolo.getQuantita() == 1)
String quantita = Integer.toString(articolo.getQuantita()) + " Disponibile";
holder.quantita.setText(quantita);
else
String quantita = Integer.toString(articolo.getQuantita()) + " Disponibili";
holder.quantita.setText(quantita);
Picasso.get().load(articolo.getImg()).into(holder.img);
public int getItemCount()
return listaArticoli.size();
public class VersionVH extends RecyclerView.ViewHolder
private CardView cardView;
private ImageView img;
private TextView nome, quantita;
public VersionVH(View itemView)
super(itemView);
nome = itemView.findViewById(R.id.nomeArticolo);
quantita = itemView.findViewById(R.id.quantita);
img = itemView.findViewById(R.id.immagine);
cardView = itemView.findViewById(R.id.cardView);
cardView.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
//here i want to put my custom_dialog
);
这是我的 StockFragment（我从 Firebase 中检索到我的卡）：
public class StockFragment extends Fragment
private RecyclerView recyclerView;
private List<Articolo> listaArticoli;
private ArticoloAdapter articoloAdapter;
private DatabaseReference query;
private LinearLayoutManager mLayoutManager;
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState)
View root = inflater.inflate(R.layout.fragment_stock, container, false);
mLayoutManager = new LinearLayoutManager(getActivity());
mLayoutManager.setReverseLayout(true);
mLayoutManager.setStackFromEnd(true);
recyclerView = root.findViewById(R.id.recycleViewStock);
recyclerView.setLayoutManager(mLayoutManager);
recyclerView.setAdapter(articoloAdapter);
listaArticoli = new ArrayList<>();
query = FirebaseDatabase.getInstance().getReference("Articoli");
query.addListenerForSingleValueEvent(valueEventListener);
return root;
ValueEventListener valueEventListener = new ValueEventListener()
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot)
listaArticoli.clear();
for(DataSnapshot snapshot : dataSnapshot.getChildren())
Articolo articolo = snapshot.getValue(Articolo.class);
listaArticoli.add(articolo);
articoloAdapter = new ArticoloAdapter(getActivity(), listaArticoli);
recyclerView.setAdapter(articoloAdapter);
@Override
public void onCancelled(@NonNull DatabaseError error)
;
这是我的 custom_dialog.xml：
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_
android:layout_
android:background="@drawable/dialog_bg"
tools:ignore="UseSwitchCompatOrMaterialXml">
<ImageView
android:id="@+id/imageView2"
android:layout_
android:layout_
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.06999999"
app:srcCompat="@android:drawable/sym_def_app_icon">
</ImageView>
<TextView
android:id="@+id/textView2"
android:layout_
android:layout_
android:layout_marginStart="146dp"
android:layout_marginEnd="146dp"
android:text="Nome Prodotto"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.19999999">
</TextView>
<com.google.android.material.textview.MaterialTextView
android:id="@+id/materialTextView"
android:layout_
android:layout_
android:layout_marginStart="32dp"
android:layout_marginEnd="32dp"
android:gravity="center_horizontal"
android:inputType="textMultiLine"
android:text="Ciao questo è un testo di prova per daniele e vedere se gli piace o meno come esce"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.3">
</com.google.android.material.textview.MaterialTextView>
<com.google.android.material.textfield.TextInputLayout
android:id="@+id/textInputLayout"
style="@style/Widget.MaterialComponents.TextInputLayout.FilledBox.Dense"
android:layout_
android:layout_
android:layout_marginStart="50dp"
android:layout_marginTop="25dp"
android:layout_marginEnd="32dp"
android:hint="Nome"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/materialTextView"
app:layout_constraintVertical_bias="0.0"
android:layout_marginLeft="50dp"
android:layout_marginRight="32dp">
<com.google.android.material.textfield.TextInputEditText
android:id="@+id/textNome"
android:layout_
android:layout_ />
</com.google.android.material.textfield.TextInputLayout>
<com.google.android.material.textfield.TextInputLayout
android:id="@+id/textInputLayout2"
style="@style/Widget.MaterialComponents.TextInputLayout.FilledBox.Dense"
android:layout_
android:layout_
android:layout_marginStart="50dp"
android:layout_marginLeft="50dp"
android:layout_marginTop="15dp"
android:layout_marginEnd="32dp"
android:layout_marginRight="32dp"
android:hint="Cognome"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/textInputLayout"
app:layout_constraintVertical_bias="0.0">
<com.google.android.material.textfield.TextInputEditText
android:id="@+id/textCognome"
android:layout_
android:layout_ />
</com.google.android.material.textfield.TextInputLayout>
<com.google.android.material.textfield.TextInputLayout
android:id="@+id/textInputLayout3"
style="@style/Widget.MaterialComponents.TextInputLayout.FilledBox.Dense"
android:layout_
android:layout_
android:layout_marginStart="50dp"
android:layout_marginTop="15dp"
android:layout_marginEnd="32dp"
android:hint="Numero Di Telefono"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/textInputLayout2"
app:layout_constraintVertical_bias="0.0"
android:layout_marginLeft="50dp"
android:layout_marginRight="32dp">
<com.google.android.material.textfield.TextInputEditText
android:id="@+id/textNumero"
android:layout_
android:layout_ />
</com.google.android.material.textfield.TextInputLayout>
<EditText
android:id="@+id/testEnabeld"
android:layout_
android:layout_
android:layout_marginTop="20dp"
android:ems="10"
android:inputType="textPersonName"
android:text="Prova"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.497"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/switchGaranzia"
app:layout_constraintVertical_bias="0.0" />
<Switch
android:id="@+id/switchGaranzia"
android:layout_
android:layout_
android:layout_marginTop="30dp"
android:layout_marginBottom="2dp"
android:text="Garanzia"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/textInputLayout3"
app:layout_constraintVertical_bias="0.0" />
<LinearLayout
android:id="@+id/linearLayout"
android:layout_
android:layout_
android:orientation="vertical"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.925">
<ImageView
android:layout_
android:layout_
android:layout_marginLeft="10dp"
android:layout_marginTop="1dp"
android:layout_marginRight="20dp"
android:layout_marginBottom="16dp"
app:srcCompat="@drawable/icons8_utente_24" />
<ImageView
android:layout_
android:layout_
android:layout_marginLeft="10dp"
android:layout_marginRight="20dp"
android:layout_marginBottom="16dp"
app:srcCompat="@drawable/icons8_utente_24" />
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
【问题讨论】：
【参考方案1】：使用下面的代码在 CardView 中添加一个具有 match_parent 属性 width 和 height 的子视图，并将侦听器添加到子视图而不是 CardVeiw
cardView.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
//here i want to put my custom_dialog
Dialog dialog = new Dialog(mContext);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setContentView(R.layout.custom_dialog);
dialog.getWindow().setLayout(ViewPager.LayoutParams.MATCH_PARENT, ViewPager.LayoutParams.WRAP_CONTENT);
dialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent);
);
【讨论】：
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