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问TableRow in TableLayout和TableRow in RecyclerView不对齐
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Stack Overflow用户

提问于 2021-04-19 09:16:03

回答 1查看 1.1K关注 0票数 0

我相信来自activity_main的activity_main和来自recycler_item_header_row的TableRow具有相同的字段值。但他们没有排成一排！它们如下所示：

在这里输入图像描述在这里输入图像描述

为什么textViews在来自activity_main和RecyclerView的行中的位置不对齐？

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>

循环再循环视图的两种类型：

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>

MainActivity

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;
    }
}

android

android-recyclerview

android-tablelayout

回答 1

Stack Overflow用户

回答已采纳

发布于 2021-04-19 23:04:47

我不会使用TableLayout和TableRow作为TableLayout额外的逻辑来调整任何作为TableRow的子逻辑的大小，但是由于只有一个TableRow作为TableLayout的子逻辑，这种逻辑是冗余的，而且效率较低。

TableRow在RecyclerView里面是RecyclerView的孩子，而不是TableLayout的孩子，就像文档说的那样。

如果TableRow的父级不是TableLayout，则TableRow将表现为水平LinearLayout

因此，它们不会对表列进行任何正常的调整大小。

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，由于布局权重是基于内容以及在需要时允许每个行增长多少，长内容RecyclerView行的长内容单元格的大小与不需要增长的无关TableLayout行中的项的大小不同。

我设计了一个类似的类型布局，但使用了一个带有ConstraintLayout值的layout_constraintWidth_percent，以实现您试图通过权重实现的更广泛的名称列。这是基于父项的固定宽度的百分比，而不是内容的可变宽度，因此RecyclerView中的项具有相同的标题行，因为它们都具有相同的parent大小。

下面是所需的新布局文件

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>

这将产生以下结果，并将所有列排列在一起。

票数 1

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/67159194

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