我已经有recyclerview列表，但是我想为每种类型的产品列表贴上标签。
我不知道如何只制作清单like this
每个选项卡都有两个选项卡（“付款历史”和“待付款”），并且有一个列表视图。我已经完成了列表，但是没有像图片中的标题
所以我想问如何在每种产品类型的RecyclerView列表上放置标题？
这是我的代码：
item_transaction.xml
<android.support.constraint.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:id="@+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="85dp"
android:background="?android:attr/selectableItemBackground"
android:clickable="true"
android:focusable="true">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginBottom="4dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintTop_toTopOf="parent">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/item_date"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Textview"
android:gravity="center"
android:textSize="@dimen/text_regular"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:textColor="@android:color/black"
/>
<android.support.constraint.ConstraintLayout
android:id="@+id/linearLayout4"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginLeft="55dp"
android:layout_marginRight="20dp"
android:layout_marginTop="8dp"
android:baselineAligned="true"
android:orientation="horizontal"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintLeft_toRightOf="@+id/item_marker"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<android.support.constraint.ConstraintLayout
android:id="@+id/linearLayout2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintWidth_percent="0.6"
tools:layout_conversion_absoluteHeight="40dp"
tools:layout_conversion_absoluteWidth="207dp">
<TextView
android:id="@+id/item_title"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:ellipsize="end"
android:singleLine="true"
android:text="TextView"
android:textColor="@android:color/black"
android:textSize="24sp"
app:layout_constraintBottom_toTopOf="@+id/item_ref_no"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_chainStyle="packed"
tools:layout_conversion_absoluteHeight="19dp"
tools:layout_conversion_absoluteWidth="58dp" />
<TextView
android:id="@+id/item_ref_no"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:ellipsize="end"
android:singleLine="true"
android:text="TextView"
android:textSize="@dimen/text_regular"
android:textColor="@android:color/black"
app:layout_constraintBottom_toBottomOf="@id/item_trans_no"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="@+id/item_title"
app:layout_constraintTop_toBottomOf="@+id/item_title"
tools:layout_conversion_absoluteHeight="19dp"
tools:layout_conversion_absoluteWidth="58dp" />
<TextView
android:id="@+id/item_trans_no"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:ellipsize="end"
android:singleLine="true"
android:text="TextView"
android:textColor="@android:color/black"
android:textSize="@dimen/text_regular"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="@+id/item_ref_no"
app:layout_constraintTop_toBottomOf="@+id/item_ref_no"
tools:layout_conversion_absoluteHeight="19dp"
tools:layout_conversion_absoluteWidth="58dp" />
</android.support.constraint.ConstraintLayout>
<android.support.constraint.ConstraintLayout
android:id="@+id/linearLayout3"
android:layout_width="0dp"
android:layout_height="0dp"
android:orientation="vertical"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@+id/linearLayout2"
app:layout_constraintTop_toTopOf="parent"
tools:layout_conversion_absoluteHeight="40dp"
tools:layout_conversion_absoluteWidth="344dp">
<TextView
android:id="@+id/item_amount"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ellipsize="end"
android:gravity="center"
android:singleLine="true"
android:text="TextView"
android:textSize="@dimen/text_regular"
android:textColor="@color/colorPrimary"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:layout_conversion_absoluteHeight="19dp"
tools:layout_conversion_absoluteWidth="58dp" />
</android.support.constraint.ConstraintLayout>
</android.support.constraint.ConstraintLayout>
<ImageView
android:id="@+id/imageView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_marginRight="5dp"
android:layout_weight=".4"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:srcCompat="@drawable/ic_keyboard_arrow_right" />
</android.support.constraint.ConstraintLayout>
</android.support.v7.widget.CardView>
</android.support.constraint.ConstraintLayout>
fragment_payment_history.xml
<android.support.v7.widget.RecyclerView 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:id="@+id/list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:scrollbars="vertical"
tools:context=".ui.fragments.PaymentHistoryFragment"
tools:listitem="@layout/item_transactions">
</android.support.v7.widget.RecyclerView>
PaymentHistoryFragment.java
public class PaymentHistoryFragment extends Fragment{
// TODO: Customize parameter argument names
private static final String ARG_COLUMN_COUNT = "column-count";
// TODO: Customize parameters
private int mColumnCount = 1;
private PaymentHistoryFragment.OnListFragmentInteractionListener mListener;
/**
* Mandatory empty constructor for the fragment manager to instantiate the
* fragment (e.g. upon screen orientation changes).
*/
public PaymentHistoryFragment() {
}
// TODO: Customize parameter initialization
@SuppressWarnings("unused")
public static PaymentHistoryFragment newInstance(int columnCount) {
PaymentHistoryFragment fragment = new PaymentHistoryFragment();
Bundle args = new Bundle();
args.putInt(ARG_COLUMN_COUNT, columnCount);
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mColumnCount = getArguments().getInt(ARG_COLUMN_COUNT);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate( R.layout.fragment_payment_history, container, false);
// Set the adapter
if (view instanceof RecyclerView) {
Context context = view.getContext();
RecyclerView recyclerView = (RecyclerView) view;
if (mColumnCount <= 1) {
recyclerView.setLayoutManager(new LinearLayoutManager(context));
} else {
recyclerView.setLayoutManager(new GridLayoutManager(context, mColumnCount));
}
recyclerView.setAdapter(new PaymentHistoryRecyclerViewAdapter(context, prepareListData(), mListener));
}
return view;
}
private List<Transactions> prepareListData() {
List<Transactions> transactionsList = new ArrayList<>();
Date date = CommonUtils.stringToDate("08/20/2018");
date = (date == null) ? new Date() : date;
Transactions transactions = new Transactions("LG Refrigerator", "0123456789", "0123456789", 50000, date);
transactionsList.add(transactions);
date = CommonUtils.stringToDate("09/25/2018");
date = (date == null) ? new Date() : date;
transactions = new Transactions("Samsung TV", "0123456789", "0123456789", 35000, date);
transactionsList.add(transactions);
return transactionsList;
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
if (context instanceof PaymentHistoryFragment.OnListFragmentInteractionListener) {
mListener = (PaymentHistoryFragment.OnListFragmentInteractionListener) context;
} else {
throw new RuntimeException(context.toString()
+ " must implement OnListFragmentInteractionListener");
}
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
public interface OnListFragmentInteractionListener {
// TODO: Update argument type and name
void onListFragmentInteraction(Transactions transactions);
}
}
PaymentHistoryRecyclerViewAdapter
public class PaymentHistoryRecyclerViewAdapter extends RecyclerView.Adapter<PaymentHistoryRecyclerViewAdapter.ViewHolder> {
private List<Transactions> mTransactionList;
private LayoutInflater mInflater;
private final PaymentHistoryFragment.OnListFragmentInteractionListener mListener;
// Provide a reference to the views for each data item
// Complex data items may need more than one view per item, and
// you provide access to all the views for a data item in a view holder
public static class ViewHolder extends RecyclerView.ViewHolder {
public TextView mTitle, mDate, mRefNo, mTransNo, mAmount;
public final View mView;
public ViewHolder(View v) {
super(v);
mView = v;
mTitle = v.findViewById( R.id.item_title);
mRefNo = v.findViewById(R.id.item_ref_no);
mTransNo = v.findViewById(R.id.item_trans_no);
mAmount = v.findViewById(R.id.item_amount);
mDate = v.findViewById(R.id.item_date);
mTransNo = v.findViewById(R.id.item_trans_no);
}
}
// Provide a suitable constructor (depends on the kind of data set)
public PaymentHistoryRecyclerViewAdapter(Context context, List<Transactions> transactionList, PaymentHistoryFragment.OnListFragmentInteractionListener listener) {
mInflater = LayoutInflater.from(context);
mListener = listener;
this.mTransactionList = transactionList;
}
// Create new views (invoked by the layout manager)
@Override
public PaymentHistoryRecyclerViewAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
// create a new view
View v = mInflater.inflate(R.layout.item_transactions, parent, false);
PaymentHistoryRecyclerViewAdapter.ViewHolder vh = new PaymentHistoryRecyclerViewAdapter.ViewHolder(v);
return vh;
}
// Replace the contents of a view (invoked by the layout manager)
@Override
public void onBindViewHolder(PaymentHistoryRecyclerViewAdapter.ViewHolder holder, int position) {
// - get element from your data set at this position
// - replace the contents of the view with that element
Transactions transactions = mTransactionList.get(position);
String dateFormat = "mm/dd/yyyy";
String transactionsAmount = String.format( Locale.US, "₱ %,d", transactions.getAmount());
String transactionsRefNo = String.format("Reference No. %S", transactions.getRefNo());
String transactionsTransNo = String.format("Transaction No. %S", transactions.getTransNo());
String transactionsTitle = String.format("%S", transactions.getTitle());
holder.mTitle.setText(transactionsTitle);
holder.mRefNo.setText(transactionsRefNo);
holder.mTransNo.setText(transactionsTransNo);
holder.mAmount.setText(transactionsAmount);
holder.mDate.setText( CommonUtils.getFormattedDate(transactions.getDate(), dateFormat));
holder.mView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.d("Did click", " pending card");
if (null != mListener) {
// Notify the active callbacks interface (the activity, if the
// fragment is attached to one) that an item has been selected.
mListener.onListFragmentInteraction(transactions);
}
}
});
}
// Return the size of your data set (invoked by the layout manager)
@Override
public int getItemCount() {
return mTransactionList.size();
}
}