Question

我是ConstraintLayout的新手。我试图将TextInputLayout宽度设置为匹配父级，但它总是跳转到365dp。而且我无法将TextInputLayout对齐在另一个底部。请帮我解决这个问题。 Screenshot

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayoutxmlns: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="dcastalia.com.cook4me.LoginActivity"
tools:layout_editor_absoluteY="81dp"
tools:layout_editor_absoluteX="0dp">


<android.support.design.widget.TextInputLayout
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    app:layout_constraintTop_toTopOf="parent"
    android:layout_marginTop="39dp"
    android:layout_marginLeft="32dp"
    app:layout_constraintLeft_toLeftOf="parent"
    android:layout_marginRight="32dp"
    app:layout_constraintRight_toRightOf="parent"
    android:layout_marginStart="32dp"
    android:layout_marginEnd="32dp"
    app:layout_constraintHorizontal_bias="0.0"
    android:id="@+id/textInputLayout">

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="hint" />
</android.support.design.widget.TextInputLayout>

<android.support.design.widget.TextInputLayout
    android:layout_width="395dp"
    android:layout_height="wrap_content"
    android:layout_marginTop="8dp"
    app:layout_constraintTop_toBottomOf="@+id/textInputLayout"
    app:layout_constraintRight_toRightOf="@+id/textInputLayout">

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="hint" />
</android.support.design.widget.TextInputLayout>

Answer 1

如果你想要TextInputLayout宽度match_parent，你应该设置android:layout_width="0dp"并删除所有marginStart和marginEnd（或marginLeft和marginRight）

<android.support.design.widget.TextInputLayout
    android:id="@+id/textInputLayout"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    >
    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="hint"
        />
</android.support.design.widget.TextInputLayout>

Answer 2

试试这个

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    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:layout_editor_absoluteX="0dp"
    tools:layout_editor_absoluteY="81dp"
    android:id="@+id/constraint">


    <android.support.design.widget.TextInputLayout
        android:id="@+id/textInputLayout1"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginEnd="32dp"
        android:layout_marginLeft="32dp"
        android:layout_marginRight="32dp"
        android:layout_marginStart="32dp"
        android:layout_marginTop="32dp"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="hint" />
    </android.support.design.widget.TextInputLayout>

    <android.support.design.widget.TextInputLayout
        android:id="@+id/textInputLayout2"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        app:layout_constraintTop_toBottomOf="@+id/textInputLayout1"
        app:layout_constraintLeft_toLeftOf="@+id/textInputLayout1"
        app:layout_constraintRight_toRightOf="@+id/textInputLayout1">

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="hint" />
    </android.support.design.widget.TextInputLayout>
</android.support.constraint.ConstraintLayout>

TextInputLayout在ConstraintLayout中无法正常工作

2 个答案: