TableLayout 中的 TableRow 和 RecyclerView 中的 TableRow 不对齐
TableRow in TableLayout and TableRow from RecyclerView aren’t align
我相信来自 activity_main 的 TableRow 和来自 recycler_item_header_row 的 TableRow 具有相同的字段值。但是他们没有对齐！它们显示如下：
enter image description here
enter image description here
为什么来自 activity_main 和来自 RecyclerView 的行中的文本视图位置不对齐？
activity_main结构：
<TableLayout>
<TableRow ><\TableRow>
<RecyclerView> <\RecyclerView>
<\Table Layout>
activity_main:
<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:context=".MainActivity">
<TableRow xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:weightSum="1">
<TextView
android:layout_column="0"
android:layout_gravity="center"
android:layout_weight="0.3"
android:width="0dp"
android:gravity="center"
android:text="ID"
android:textSize="30sp"
android:textStyle="bold" />
<TextView
android:layout_column="1"
android:layout_gravity="center"
android:layout_weight="0.4"
android:width="0dp"
android:gravity="center"
android:text="Name"
android:textSize="16dp"
android:textStyle="bold" />
<TextView
android:layout_column="2"
android:layout_gravity="center"
android:layout_weight="0.3"
android:width="0dp"
android:gravity="center"
android:text="Payment"
android:textSize="16dp"
android:textStyle="bold" />
</TableRow>
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</androidx.recyclerview.widget.RecyclerView>
</TableLayout>
回收站视图的两种类型的项目：
recycler_item_header_row:
<?xml version="1.0" encoding="utf-8"?>
<TableRow xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:weightSum="1">
<TextView
android:layout_column="0"
android:layout_gravity="center"
android:layout_weight="0.3"
android:width="0dp"
android:gravity="center"
android:text="ID"
android:textSize="30sp"
android:textStyle="bold" />
<TextView
android:layout_column="1"
android:layout_gravity="center"
android:layout_weight="0.4"
android:width="0dp"
android:gravity="center"
android:text="Name"
android:textSize="16dp"
android:textStyle="bold" />
<TextView
android:layout_column="2"
android:layout_gravity="center"
android:layout_weight="0.3"
android:width="0dp"
android:gravity="center"
android:text="Payment"
android:textSize="16dp"
android:textStyle="bold" />
</TableRow>
recycler_item_regular_row:
<?xml version="1.0" encoding="utf-8"?>
<TableRow xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:weightSum="1"
>
<TextView
android:id="@+id/recycler_item_regular_cell_ID"
android:layout_column="0"
android:layout_weight="0.3"
android:width="0dp"
android:gravity="center"
android:text="ID"
android:textSize="16dp" />
<TextView
android:id="@+id/cell_name"
android:layout_column="1"
android:layout_weight="0.4"
android:width="0dp"
android:gravity="center"
android:text="Name"
android:textSize="16dp" />
<TextView
android:id="@+id/cell_payment"
android:layout_column="2"
android:layout_weight="0.3"
android:width="0dp"
android:gravity="center"
android:text="Payment"
android:textSize="16dp" />
</TableRow>
主要活动
public class MainActivity extends AppCompatActivity {
private RecyclerView recyclerView;
private ArrayList<PaymentModel> paymentData;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
paymentData = new ArrayList<>();
add10TestItems(paymentData);
recyclerView = findViewById(R.id.recycler_view);
recyclerView.setHasFixedSize(true);
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);
RecyclerViewAdapter adapter = new RecyclerViewAdapter(this, paymentData);
recyclerView.setAdapter(adapter);
}
private void add10TestItems(ArrayList<PaymentModel> paymentData) {
for (int i = 0; i < 10; i++) {
paymentData.add(new PaymentModel("A" + i, "Name",
String.valueOf(5 * i)));
}
paymentData.add(new PaymentModel("IDDDDDDDDDDDDDDDDDD", "dddddddddddddddd", "dsfdfdf"));
paymentData.add(new PaymentModel("ID", "Name", "Payment"));
}
}
适配器：
public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
public static final int HEADER_ROW_TYPE = 0;
public static final int REGULAR_ROW_TYPE = 1;
private Context context;
private List<PaymentModel> paymentModelList;
public RecyclerViewAdapter(Context context, List<PaymentModel> paymentModelList) {
this.context = context;
this.paymentModelList = paymentModelList;
}
@Override
public int getItemViewType(int position) {
if (0 == position) {
return HEADER_ROW_TYPE;
} else {
return REGULAR_ROW_TYPE;
}
}
@NonNull
@Override
public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view;
RecyclerView.ViewHolder viewHolder;
if (viewType == HEADER_ROW_TYPE) {
view = LayoutInflater.from(context).inflate(R.layout.recycler_item_header_row,
parent, false);
viewHolder = new ViewHolderHeaderRow(view);
} else {
view = LayoutInflater.from(context).inflate(R.layout.recycler_item_regular_row,
parent, false);
viewHolder = new ViewHolderRegularRow(view);
}
return viewHolder;
}
@Override
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
if (position == 0) {
ViewHolderHeaderRow headerAdapter = (ViewHolderHeaderRow) holder;
} else {
ViewHolderRegularRow regularAdapter = (ViewHolderRegularRow) holder;
regularAdapter.setData(paymentModelList.get(position - 1));
}
}
@Override
public int getItemCount() {
return (paymentModelList.size() + 1);
}
public class ViewHolderRegularRow extends RecyclerView.ViewHolder {
private TextView cellID;
private TextView cellName;
private TextView cellPayment;
public ViewHolderRegularRow(@NonNull View itemView) {
super(itemView);
cellID = itemView.findViewById(R.id.recycler_item_regular_cell_ID);
cellName = itemView.findViewById(R.id.cell_name);
cellPayment = itemView.findViewById(R.id.cell_payment);
}
public void setData(PaymentModel paymentModel) {
cellID.setText(paymentModel.getId());
cellName.setText(paymentModel.getName());
cellPayment.setText(paymentModel.getPayment());
}
}
public class ViewHolderHeaderRow extends RecyclerView.ViewHolder {
public ViewHolderHeaderRow(@NonNull View itemView) {
super(itemView);
}
}
}
型号：
public class PaymentModel {
private String id;
private String name;
private String payment;
public PaymentModel(String id, String name, String payment) {
this.id = id;
this.name = name;
this.payment = payment;
}
public String getId() {
return id;
}
public String getName() {
return name;
}
public String getPayment() {
return payment;
}
}
我不会使用 TableLayout 和 TableRow 作为 TableLayout 额外的逻辑来调整任何 child 的大小 TableRow 但是因为你只有一个TableRow 作为 TableLayout 的 child 逻辑是多余的并且效率较低。
RecyclerView里面的TableRow是RecyclerView的children而不是[=14=的children ] 正如 Docs 所说
If a TableRow's parent is not a TableLayout, the TableRow will behave as an horizontal LinearLayout
因此不会对 table 列进行任何正常的大小调整
所以在实践中你实际上得到了这样的结构：-
<TableLayout>
<TableRow ><\TableRow>
<\TableLayout>
<RecyclerView>
<\LinearLayout>
<\LinearLayout>
.....
<\RecyclerView>
因此，由于布局权重基于内容以及每个内容在需要时允许增长多少，所以长内容 RecyclerView 行的长内容单元格大小的增长方式与不相关项目中的项目不同TableLayout 不需要增长的行。
我设计了一个类似的类型布局，但使用 ConstraintLayout 和 layout_constraintWidth_percent 值来实现您试图通过权重实现的更宽的名称列。这是有效的，因为这是基于 parent 的固定宽度的百分比而不是内容的可变宽度，因此 RecyclerView 中的项目表现与 Header 行相同它们都具有相同的 parent 大小。
以下是需要的新布局文件
activity_main
<?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_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<TextView
android:id="@+id/HeaderID"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:text="ID"
android:textSize="30sp"
android:textStyle="bold"
app:layout_constraintEnd_toStartOf="@+id/HeaderName"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintWidth_percent="0.3"/>
<TextView
android:id="@+id/HeaderName"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Name"
android:textSize="16dp"
android:textStyle="bold"
app:layout_constraintStart_toEndOf="@+id/HeaderID"
app:layout_constraintEnd_toStartOf="@+id/HeaderPayment"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="@+id/HeaderID"
app:layout_constraintWidth_percent="0.4"/>
<TextView
android:id="@+id/HeaderPayment"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Payment"
android:textSize="16dp"
android:textStyle="bold"
app:layout_constraintStart_toEndOf="@+id/HeaderName"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="@+id/HeaderID"
app:layout_constraintWidth_percent="0.3"/>
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/HeaderID"/>
</androidx.constraintlayout.widget.ConstraintLayout>
recycler_item_header_row
<?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_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/HeaderRowID"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:text="ID"
android:textSize="30sp"
android:textStyle="bold"
app:layout_constraintEnd_toStartOf="@+id/HeaderRowName"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintWidth_percent="0.3"/>
<TextView
android:id="@+id/HeaderRowName"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Name"
android:textSize="16dp"
android:textStyle="bold"
app:layout_constraintStart_toEndOf="@+id/HeaderRowID"
app:layout_constraintEnd_toStartOf="@+id/HeaderRowPayment"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="@+id/HeaderRowID"
app:layout_constraintWidth_percent="0.4"/>
<TextView
android:id="@+id/HeaderRowPayment"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Payment"
android:textSize="16dp"
android:textStyle="bold"
app:layout_constraintStart_toEndOf="@+id/HeaderRowName"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="@+id/HeaderRowID"
app:layout_constraintWidth_percent="0.3"/>
</androidx.constraintlayout.widget.ConstraintLayout>
recycler_item_regular_row
<?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_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/recycler_item_regular_cell_ID"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:textSize="16dp"
app:layout_constraintEnd_toStartOf="@+id/cell_name"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintWidth_percent="0.3"
tools:text="ID" />
<TextView
android:id="@+id/cell_name"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:textSize="16dp"
app:layout_constraintStart_toEndOf="@+id/recycler_item_regular_cell_ID"
app:layout_constraintEnd_toStartOf="@+id/cell_payment"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="@+id/recycler_item_regular_cell_ID"
app:layout_constraintWidth_percent="0.4"
tools:text="Name" />
<TextView
android:id="@+id/cell_payment"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:textSize="16dp"
app:layout_constraintBottom_toBottomOf="@+id/recycler_item_regular_cell_ID"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@+id/cell_name"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintWidth_percent="0.3"
tools:text="Payment" />
</androidx.constraintlayout.widget.ConstraintLayout>
这会产生以下结果，所有列都排成一行。
我相信来自 activity_main 的 TableRow 和来自 recycler_item_header_row 的 TableRow 具有相同的字段值。但是他们没有对齐！它们显示如下：
enter image description here enter image description here
为什么来自 activity_main 和来自 RecyclerView 的行中的文本视图位置不对齐？
activity_main结构：
<TableLayout>
<TableRow ><\TableRow>
<RecyclerView> <\RecyclerView>
<\Table Layout>
activity_main:
<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:context=".MainActivity">
<TableRow xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:weightSum="1">
<TextView
android:layout_column="0"
android:layout_gravity="center"
android:layout_weight="0.3"
android:width="0dp"
android:gravity="center"
android:text="ID"
android:textSize="30sp"
android:textStyle="bold" />
<TextView
android:layout_column="1"
android:layout_gravity="center"
android:layout_weight="0.4"
android:width="0dp"
android:gravity="center"
android:text="Name"
android:textSize="16dp"
android:textStyle="bold" />
<TextView
android:layout_column="2"
android:layout_gravity="center"
android:layout_weight="0.3"
android:width="0dp"
android:gravity="center"
android:text="Payment"
android:textSize="16dp"
android:textStyle="bold" />
</TableRow>
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</androidx.recyclerview.widget.RecyclerView>
</TableLayout>
回收站视图的两种类型的项目：
recycler_item_header_row:
<?xml version="1.0" encoding="utf-8"?>
<TableRow xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:weightSum="1">
<TextView
android:layout_column="0"
android:layout_gravity="center"
android:layout_weight="0.3"
android:width="0dp"
android:gravity="center"
android:text="ID"
android:textSize="30sp"
android:textStyle="bold" />
<TextView
android:layout_column="1"
android:layout_gravity="center"
android:layout_weight="0.4"
android:width="0dp"
android:gravity="center"
android:text="Name"
android:textSize="16dp"
android:textStyle="bold" />
<TextView
android:layout_column="2"
android:layout_gravity="center"
android:layout_weight="0.3"
android:width="0dp"
android:gravity="center"
android:text="Payment"
android:textSize="16dp"
android:textStyle="bold" />
</TableRow>
recycler_item_regular_row:
<?xml version="1.0" encoding="utf-8"?>
<TableRow xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:weightSum="1"
>
<TextView
android:id="@+id/recycler_item_regular_cell_ID"
android:layout_column="0"
android:layout_weight="0.3"
android:width="0dp"
android:gravity="center"
android:text="ID"
android:textSize="16dp" />
<TextView
android:id="@+id/cell_name"
android:layout_column="1"
android:layout_weight="0.4"
android:width="0dp"
android:gravity="center"
android:text="Name"
android:textSize="16dp" />
<TextView
android:id="@+id/cell_payment"
android:layout_column="2"
android:layout_weight="0.3"
android:width="0dp"
android:gravity="center"
android:text="Payment"
android:textSize="16dp" />
</TableRow>
主要活动
public class MainActivity extends AppCompatActivity {
private RecyclerView recyclerView;
private ArrayList<PaymentModel> paymentData;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
paymentData = new ArrayList<>();
add10TestItems(paymentData);
recyclerView = findViewById(R.id.recycler_view);
recyclerView.setHasFixedSize(true);
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);
RecyclerViewAdapter adapter = new RecyclerViewAdapter(this, paymentData);
recyclerView.setAdapter(adapter);
}
private void add10TestItems(ArrayList<PaymentModel> paymentData) {
for (int i = 0; i < 10; i++) {
paymentData.add(new PaymentModel("A" + i, "Name",
String.valueOf(5 * i)));
}
paymentData.add(new PaymentModel("IDDDDDDDDDDDDDDDDDD", "dddddddddddddddd", "dsfdfdf"));
paymentData.add(new PaymentModel("ID", "Name", "Payment"));
}
}
适配器：
public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
public static final int HEADER_ROW_TYPE = 0;
public static final int REGULAR_ROW_TYPE = 1;
private Context context;
private List<PaymentModel> paymentModelList;
public RecyclerViewAdapter(Context context, List<PaymentModel> paymentModelList) {
this.context = context;
this.paymentModelList = paymentModelList;
}
@Override
public int getItemViewType(int position) {
if (0 == position) {
return HEADER_ROW_TYPE;
} else {
return REGULAR_ROW_TYPE;
}
}
@NonNull
@Override
public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view;
RecyclerView.ViewHolder viewHolder;
if (viewType == HEADER_ROW_TYPE) {
view = LayoutInflater.from(context).inflate(R.layout.recycler_item_header_row,
parent, false);
viewHolder = new ViewHolderHeaderRow(view);
} else {
view = LayoutInflater.from(context).inflate(R.layout.recycler_item_regular_row,
parent, false);
viewHolder = new ViewHolderRegularRow(view);
}
return viewHolder;
}
@Override
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
if (position == 0) {
ViewHolderHeaderRow headerAdapter = (ViewHolderHeaderRow) holder;
} else {
ViewHolderRegularRow regularAdapter = (ViewHolderRegularRow) holder;
regularAdapter.setData(paymentModelList.get(position - 1));
}
}
@Override
public int getItemCount() {
return (paymentModelList.size() + 1);
}
public class ViewHolderRegularRow extends RecyclerView.ViewHolder {
private TextView cellID;
private TextView cellName;
private TextView cellPayment;
public ViewHolderRegularRow(@NonNull View itemView) {
super(itemView);
cellID = itemView.findViewById(R.id.recycler_item_regular_cell_ID);
cellName = itemView.findViewById(R.id.cell_name);
cellPayment = itemView.findViewById(R.id.cell_payment);
}
public void setData(PaymentModel paymentModel) {
cellID.setText(paymentModel.getId());
cellName.setText(paymentModel.getName());
cellPayment.setText(paymentModel.getPayment());
}
}
public class ViewHolderHeaderRow extends RecyclerView.ViewHolder {
public ViewHolderHeaderRow(@NonNull View itemView) {
super(itemView);
}
}
}
型号：
public class PaymentModel {
private String id;
private String name;
private String payment;
public PaymentModel(String id, String name, String payment) {
this.id = id;
this.name = name;
this.payment = payment;
}
public String getId() {
return id;
}
public String getName() {
return name;
}
public String getPayment() {
return payment;
}
}
我不会使用 TableLayout 和 TableRow 作为 TableLayout 额外的逻辑来调整任何 child 的大小 TableRow 但是因为你只有一个TableRow 作为 TableLayout 的 child 逻辑是多余的并且效率较低。
RecyclerView里面的TableRow是RecyclerView的children而不是[=14=的children ] 正如 Docs 所说
If a TableRow's parent is not a TableLayout, the TableRow will behave as an horizontal LinearLayout
因此不会对 table 列进行任何正常的大小调整
所以在实践中你实际上得到了这样的结构：-
<TableLayout>
<TableRow ><\TableRow>
<\TableLayout>
<RecyclerView>
<\LinearLayout>
<\LinearLayout>
.....
<\RecyclerView>
因此，由于布局权重基于内容以及每个内容在需要时允许增长多少，所以长内容 RecyclerView 行的长内容单元格大小的增长方式与不相关项目中的项目不同TableLayout 不需要增长的行。
我设计了一个类似的类型布局，但使用 ConstraintLayout 和 layout_constraintWidth_percent 值来实现您试图通过权重实现的更宽的名称列。这是有效的，因为这是基于 parent 的固定宽度的百分比而不是内容的可变宽度，因此 RecyclerView 中的项目表现与 Header 行相同它们都具有相同的 parent 大小。
以下是需要的新布局文件
activity_main
<?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_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<TextView
android:id="@+id/HeaderID"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:text="ID"
android:textSize="30sp"
android:textStyle="bold"
app:layout_constraintEnd_toStartOf="@+id/HeaderName"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintWidth_percent="0.3"/>
<TextView
android:id="@+id/HeaderName"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Name"
android:textSize="16dp"
android:textStyle="bold"
app:layout_constraintStart_toEndOf="@+id/HeaderID"
app:layout_constraintEnd_toStartOf="@+id/HeaderPayment"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="@+id/HeaderID"
app:layout_constraintWidth_percent="0.4"/>
<TextView
android:id="@+id/HeaderPayment"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Payment"
android:textSize="16dp"
android:textStyle="bold"
app:layout_constraintStart_toEndOf="@+id/HeaderName"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="@+id/HeaderID"
app:layout_constraintWidth_percent="0.3"/>
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/HeaderID"/>
</androidx.constraintlayout.widget.ConstraintLayout>
recycler_item_header_row
<?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_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/HeaderRowID"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:text="ID"
android:textSize="30sp"
android:textStyle="bold"
app:layout_constraintEnd_toStartOf="@+id/HeaderRowName"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintWidth_percent="0.3"/>
<TextView
android:id="@+id/HeaderRowName"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Name"
android:textSize="16dp"
android:textStyle="bold"
app:layout_constraintStart_toEndOf="@+id/HeaderRowID"
app:layout_constraintEnd_toStartOf="@+id/HeaderRowPayment"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="@+id/HeaderRowID"
app:layout_constraintWidth_percent="0.4"/>
<TextView
android:id="@+id/HeaderRowPayment"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Payment"
android:textSize="16dp"
android:textStyle="bold"
app:layout_constraintStart_toEndOf="@+id/HeaderRowName"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="@+id/HeaderRowID"
app:layout_constraintWidth_percent="0.3"/>
</androidx.constraintlayout.widget.ConstraintLayout>
recycler_item_regular_row
<?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_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/recycler_item_regular_cell_ID"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:textSize="16dp"
app:layout_constraintEnd_toStartOf="@+id/cell_name"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintWidth_percent="0.3"
tools:text="ID" />
<TextView
android:id="@+id/cell_name"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:textSize="16dp"
app:layout_constraintStart_toEndOf="@+id/recycler_item_regular_cell_ID"
app:layout_constraintEnd_toStartOf="@+id/cell_payment"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="@+id/recycler_item_regular_cell_ID"
app:layout_constraintWidth_percent="0.4"
tools:text="Name" />
<TextView
android:id="@+id/cell_payment"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
android:textSize="16dp"
app:layout_constraintBottom_toBottomOf="@+id/recycler_item_regular_cell_ID"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@+id/cell_name"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintWidth_percent="0.3"
tools:text="Payment" />
</androidx.constraintlayout.widget.ConstraintLayout>
这会产生以下结果，所有列都排成一行。
