Question

我正在研究Constraintlayout我可以调整子视图，但是我无法将Textview引力从左到右对齐有没有办法让textview从左到右对齐

这是代码

<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:layout_width="match_parent"
    android:id="@+id/mylotslist_itemview"
    android:layout_height="wrap_content">
    <TextView
        android:id="@+id/serialnumber"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="8dp"
        android:layout_marginEnd="8dp"
        android:gravity="left"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:padding="@dimen/padding5"
        android:text="1"
        android:textColor="@color/black"
        android:textSize="@dimen/list_itemtextsize"
        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="0.0" />
    <TextView
        android:id="@+id/lotnumber"
        android:gravity="left"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:padding="@dimen/padding5"
        android:text="50"
        android:textColor="@color/black"
        android:textSize="@dimen/list_itemtextsize"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.08"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.0" />
    <TextView
        android:id="@+id/sellername"
        android:layout_width="wrap_content"
        android:layout_gravity="center"
        android:layout_height="wrap_content"
        android:layout_marginBottom="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:gravity="right"
        android:padding="@dimen/padding5"
        android:text="ffffffffff"
        android:textColor="@color/black"
  app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintVertical_bias="0.0"
         />

    <TextView
        android:id="@+id/lotstatus"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:gravity="left"
        android:layout_marginTop="8dp"
        android:background="@color/lot_statusfalse"
        android:paddingBottom="@dimen/padding5"
        android:paddingLeft="@dimen/padding5"
        android:paddingRight="@dimen/padding5"
        android:paddingTop="@dimen/padding5"
        android:text="Alloted and Empty"
        android:textColor="@color/white"
        android:textSize="@dimen/list_itemtextsize"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.66"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.0" />
    <TextView
        android:id="@+id/createddate"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:gravity="left"

        android:padding="@dimen/padding5"
        android:text="01-FEB-2018 10:30 AM"
        android:textColor="@color/black"
        android:textSize="@dimen/list_itemtextsize"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="1.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.0" />
</android.support.constraint.ConstraintLayout>

我希望我的textview像这样对齐。有没有办法呢？像这样对齐？

Answer 1

您需要从所有视图中删除app:layout_constraintStart_toStartOf="parent"，除了第一个视图。因为它会在左侧分配您的所有视图。

<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/mylotslist_itemview"
android:layout_width="match_parent"
android:layout_height="wrap_content">

<TextView
    android:id="@+id/serialnumber"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:gravity="left"
    android:padding="8dp"
    android:text="1"
    android:textColor="@color/black"
    android:textSize="@dimen/font_normal"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintWidth_percent="0.1" />

<TextView
    android:id="@+id/lotnumber"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:gravity="left"
    android:padding="8dp"
    android:text="50"
    android:textColor="@color/black"
    android:textSize="@dimen/font_normal"
    app:layout_constraintStart_toEndOf="@+id/serialnumber"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintWidth_percent="0.1" />

<TextView
    android:id="@+id/sellername"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:gravity="end"
    android:padding="8dp"
    android:text="ffffffffff"
    android:textColor="@color/black"
    app:layout_constraintStart_toEndOf="@+id/lotnumber"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintWidth_percent="0.2" />

<TextView
    android:id="@+id/lotstatus"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:background="@color/colorPrimary"
    android:gravity="start"
    android:padding="8dp"
    android:text="Alloted and Empty"
    android:textColor="@color/white"
    android:textSize="@dimen/font_normal"
    app:layout_constraintStart_toEndOf="@+id/sellername"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintWidth_percent="0.3" />

<TextView
    android:id="@+id/createddate"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:gravity="start"
    android:padding="8dp"
    android:text="01-FEB-2018 10:30 AM"
    android:textColor="@color/black"
    android:textSize="@dimen/font_normal"
    app:layout_constraintStart_toEndOf="@+id/lotstatus"
    app:layout_constraintWidth_percent="0.3" />

Answer 2

从除第一个视图之外的所有视图中删除app:layout_constraintStart_toStartOf="parent"，并为除第一个视图之外的每个视图添加app:layout_constraintStart_toEndOf = "@+id/your_left_views_id"。

像

<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:layout_width="match_parent"
android:id="@+id/mylotslist_itemview"
android:layout_height="wrap_content">

<TextView
    android:id="@+id/serialnumber"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginBottom="8dp"
    android:layout_marginEnd="8dp"
    android:layout_marginStart="8dp"
    android:layout_marginTop="8dp"
    android:gravity="left"
    android:padding="@dimen/padding5"
    android:text="1"
    android:textColor="@color/black"
    android:textSize="@dimen/list_itemtextsize"
    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="0.0" />

<TextView
    android:id="@+id/lotnumber"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginBottom="8dp"
    android:layout_marginEnd="8dp"
    android:layout_marginStart="8dp"
    android:layout_marginTop="8dp"
    android:gravity="left"
    android:padding="@dimen/padding5"
    android:text="50"
    android:textColor="@color/black"
    android:textSize="@dimen/list_itemtextsize"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintHorizontal_bias="0.08"
    app:layout_constraintStart_toEndOf="@+id/serialnumber"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintVertical_bias="0.0" />

<TextView
    android:id="@+id/sellername"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:layout_marginBottom="8dp"
    android:layout_marginEnd="8dp"
    android:layout_marginStart="8dp"
    android:layout_marginTop="8dp"
    android:gravity="right"
    android:padding="@dimen/padding5"
    android:text="ffffffffff"
    android:textColor="@color/black"
    app:layout_constraintStart_toEndOf="@+id/lotnumber"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintVertical_bias="0.0" />

<TextView
    android:id="@+id/lotstatus"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginBottom="8dp"
    android:layout_marginEnd="8dp"
    android:layout_marginStart="8dp"
    android:layout_marginTop="8dp"
    android:background="@color/colorPrimary"
    android:gravity="left"
    android:paddingBottom="@dimen/padding5"
    android:paddingLeft="@dimen/padding5"
    android:paddingRight="@dimen/padding5"
    android:paddingTop="@dimen/padding5"
    android:text="Alloted and Empty"
    android:textColor="@color/white"

    android:textSize="@dimen/list_itemtextsize"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintHorizontal_bias="0.66"
    app:layout_constraintStart_toEndOf="@+id/sellername"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintVertical_bias="0.0" />

<TextView
    android:id="@+id/createddate"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginBottom="8dp"
    android:layout_marginEnd="8dp"
    android:layout_marginStart="8dp"
    android:layout_marginTop="8dp"
    android:gravity="left"
    android:padding="@dimen/padding5"
    android:text="01-FEB-2018 10:30 AM"
    android:textColor="@color/black"
    android:textSize="@dimen/list_itemtextsize"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHorizontal_bias="1.0"
    app:layout_constraintStart_toEndOf="@+id/lotstatus"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintVertical_bias="0.0" />

Answer 3

您正在赞美所有观点   应用程式：layout_constraintStart_toStartOf =＆＃34;父＆＃34;   应用程式：layout_constraintEnd_toEndOf =＆＃34;父＆＃34;这是错的。

在约束布局中，您必须为相关视图提供开始，结束，顶部，底部约束。

尝试以下代码：

<?xml version="1.0" encoding="utf-8"?>
<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/mylotslist_itemview"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <TextView
        android:id="@+id/serialnumber"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="10dp"
        android:layout_marginTop="10dp"
        android:padding="@dimen/padding5"
        android:text="1"
        android:textColor="@color/color_btn_blue"
        android:textSize="@dimen/list_itemtextsize"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/lotnumber"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="5dp"
        android:padding="@dimen/padding5"
        android:text="50"
        android:textColor="@color/color_charcoal"
        android:textSize="@dimen/list_itemtextsize"
        app:layout_constraintStart_toEndOf="@+id/serialnumber"
        app:layout_constraintTop_toTopOf="@+id/serialnumber" />

    <TextView
        android:id="@+id/sellername"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="5dp"
        android:padding="@dimen/padding5"
        android:text="ffffffffff"
        android:textColor="@color/radius_text_blue"
        app:layout_constraintStart_toEndOf="@+id/lotnumber"
        app:layout_constraintTop_toTopOf="@+id/serialnumber" />

    <TextView
        android:id="@+id/lotstatus"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@color/blue_text"
        android:padding="@dimen/padding5"
        android:text="Alloted and Empty"
        android:textColor="@color/default_text"
        android:textSize="@dimen/list_itemtextsize"
        app:layout_constraintStart_toEndOf="@+id/sellername"
        app:layout_constraintTop_toTopOf="@+id/serialnumber" />

    <TextView
        android:id="@+id/createddate"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="5dp"
        android:background="@color/file_limit_error"
        android:padding="@dimen/padding5"
        android:text="01-FEB-2018 10:30 AM"
        android:textColor="@color/default_text"
        android:textSize="@dimen/list_itemtextsize"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/lotstatus"
        app:layout_constraintTop_toTopOf="@+id/serialnumber" />
</android.support.constraint.ConstraintLayout>

如何为ConstraintLayout中的子视图赋予重力

3 个答案: