如何在 android studio 中将居中按钮置于 2 个线性布局下方

Question

我的目标是让 2 列带有一个编辑文本和几个按钮，但我需要在屏幕底部有一个按钮来确认这些值。我无法将它放到屏幕底部并使其居中。

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">

<LinearLayout
    android:layout_width="0dp"
    android:layout_height="match_parent"
    android:layout_weight="1"
    android:orientation="vertical">
    <EditText
        android:id="@+id/etWe"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="numberSigned"
        android:hint="@string/We"/>
    

</LinearLayout>

<LinearLayout
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:orientation="vertical">
    <EditText
        android:id="@+id/etThey"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="numberSigned"
        android:hint="@string/They"/>
</LinearLayout>

Answer 1

这个XML布局会帮助你

 <LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    tools:context=".MainActivity">
    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:orientation="vertical">
        <EditText
            android:id="@+id/etWe"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:inputType="numberSigned"
            android:hint="@string/We"/>
    </LinearLayout>
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:orientation="vertical">
        <EditText
            android:id="@+id/etThey"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:inputType="numberSigned"
            android:hint="@string/They"/>
    </LinearLayout>
</LinearLayout>
<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="0dip"
    android:layout_weight="1"
    android:gravity="center|bottom"
    android:orientation="vertical" >
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Button"/>
</LinearLayout>

我认为使用 RelativeLayout

android:layout_alignParentBottom="true"

Answer 2

看看这个：

<?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"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Confirm"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent" />

    <LinearLayout
        android:id="@+id/col1"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:orientation="vertical"
        app:layout_constraintBottom_toTopOf="@id/button"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toLeftOf="@id/col2"
        app:layout_constraintTop_toTopOf="parent">

        <EditText
            android:id="@+id/etWe"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="We"
            android:inputType="numberSigned" />
    </LinearLayout>

    <LinearLayout
        android:id="@+id/col2"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:orientation="vertical"
        app:layout_constraintBottom_toTopOf="@id/button"
        app:layout_constraintLeft_toRightOf="@id/col1"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <EditText
            android:id="@+id/etThey"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="They"
            android:inputType="numberSigned" />
    </LinearLayout>

</androidx.constraintlayout.widget.ConstraintLayout>

它将生成以下布局：

如何在 android studio 中将居中按钮置于 2 个线性布局下方

How to put centered button below 2 linear layouts in android studio

android

android-layout