如何在 ConstraintLayout 中设置视图的高度匹配父级? [英] How to set a view's height match parent in ConstraintLayout?

问题描述

我正在创建一个 layout.我想将我的自定义 toolbar(这是另一种布局)设置到 layout 的顶部和FrameLayout 就在 toolbar 下方.但是 FrameLayout 应该得到 layout 的高度 (match_parent) 的其余部分.如何使用约束布局来实现这一点?

I am creating a layout.I want to set my custom toolbar(Which is another layout) to the top of layout and the FrameLayout just below the toolbar. But the FrameLayout should get rest of the layout's height (match_parent). How to achieve this using constraint layout ?

推荐答案

解决方案:我假设您将工具栏作为另一个 xml 文件，如下所示:

Solution: I'm assuming that you have your toolbar as another xml file, something like this:

toolbar.xml

<android.support.v7.widget.Toolbar
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:minHeight="60dp"
    android:background="?attr/colorPrimary"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
    app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />

然后使用 ConstraintLayout 将它与 FrameLayout 一起使用，如下所示:

then using ConstraintLayout use it with FrameLayout like this:

<?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:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <include
        android:id="@+id/toolbar"
        layout="@layout/toolbar"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <FrameLayout
        android:id="@+id/container"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/toolbar" />

</android.support.constraint.ConstraintLayout>

希望这会有所帮助.如果您有任何问题，请发表评论.

Hope this helps. Please comment if you have any issues with it.

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