Is it possible to put a ConstraintLayout inside a

问题:

So recently, with Android Studio 2.2 there's a new ConstraintLayout that makes designing a lot easier, but unlike RelativeLayout and Linearlayout, I can't use a ScrollView to surround ConstraintLayot. Is this possible? If so, how?

i.e.

<ScrollView 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="0dp">

        <android.support.constraint.ConstraintLayout
            android:id="@+id/constraintLayout"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            tools:layout_editor_absoluteX="0dp"
            tools:layout_editor_absoluteY="0dp">

            <!-- Have whatever children you want inside -->

        </android.support.constraint.ConstraintLayout>

</ScrollView>

回答1:

There was a bug with ConstraintLayout inside ScrollViews and it has been fixed. google has fixed the bug in Android Studio 2.2 Preview 2 (constraintlayout 1.0.0-alpha2).

Check this link for new update (Preview 2): works properly inside ScrollView and RecycleView

回答2:

Try adding android:fillViewport="true" to the ScrollView.

Found the solution here: LinearLayout not expanding inside a ScrollView

回答3:

use NestedScrollView with viewport true is working good for me

<android.support.v4.widget.NestedScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fillViewport="true">

        <android.support.constraint.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="700dp">

        </android.support.constraint.ConstraintLayout>

</android.support.v4.widget.NestedScrollView>

回答4:

Set ScrollView layout_height as a wrap_content then it will work fine. Below are example which may help someone. I have used compile 'com.android.support.constraint:constraint-layout:1.0.2' for constraint layout.

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    android:orientation="vertical"
    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"
    android:id="@+id/activity_main"
    tools:context=".ScrollViewActivity">

    <ScrollView
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        >

        <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="wrap_content"
            android:orientation="vertical"
            android:paddingLeft="8dp"
            android:paddingRight="8dp"
            android:scrollbars="vertical">

            <TextView
                android:id="@+id/tvCommonSurname"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="surname"
                android:textAppearance="?android:attr/textAppearanceLarge"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                tools:layout_constraintLeft_creator="1"
                tools:layout_constraintTop_creator="1" />

            <EditText
                android:id="@+id/editText3"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:ems="10"
                android:inputType="text"
                android:maxLines="1"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintRight_toRightOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/tvCommonSurname"
                tools:layout_constraintLeft_creator="1"
                tools:layout_constraintRight_creator="1"
                tools:layout_constraintTop_creator="1" />

            <TextView
                android:id="@+id/tvCommonName"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:text="firstName"
                android:textAppearance="?android:attr/textAppearanceLarge"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/editText3"
                tools:layout_constraintLeft_creator="1"
                tools:layout_constraintTop_creator="1" />

            <EditText
                android:id="@+id/editText"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:ems="10"
                android:inputType="text"
                android:maxLines="1"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintRight_toRightOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/tvCommonName"
                tools:layout_constraintLeft_creator="1"
                tools:layout_constraintRight_creator="1"
                tools:layout_constraintTop_creator="1" />

            <TextView
                android:id="@+id/tvCommonLastName"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:text="middleName"
                android:textAppearance="?android:attr/textAppearanceLarge"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/editText"
                tools:layout_constraintLeft_creator="1"
                tools:layout_constraintTop_creator="1" />

            <EditText
                android:id="@+id/editText2"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:ems="10"
                android:inputType="text"
                android:maxLines="1"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintRight_toRightOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/tvCommonLastName"
                tools:layout_constraintLeft_creator="1"
                tools:layout_constraintRight_creator="1"
                tools:layout_constraintTop_creator="1" />

            <TextView
                android:id="@+id/tvCommonPhone"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:text="Phone number"
                android:textAppearance="?android:attr/textAppearanceLarge"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/editText2"
                tools:layout_constraintLeft_creator="1"
                tools:layout_constraintTop_creator="1" />

            <EditText
                android:id="@+id/editText4"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:digits="0123456789"
                android:ems="10"
                android:inputType="phone"
                android:maxLength="10"
                android:maxLines="1"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintRight_toRightOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/tvCommonPhone"
                tools:layout_constraintLeft_creator="1"
                tools:layout_constraintRight_creator="1"
                tools:layout_constraintTop_creator="1" />

            <TextView
                android:id="@+id/textView3"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:text="sex"
                android:textAppearance="?android:attr/textAppearanceLarge"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/editText4"
                tools:layout_constraintLeft_creator="1"
                tools:layout_constraintTop_creator="1" />

            <RadioGroup 
                xmlns:android="http://schemas.android.com/apk/res/android"
                android:id="@+id/radiogroup"
                android:layout_width="0dp"
                android:layout_height="48dp"
                android:layout_marginTop="8dp"
                android:orientation="horizontal"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/textView3"
                tools:layout_constraintLeft_creator="1"
                tools:layout_constraintTop_creator="1">

                <RadioButton
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="pirates" />

                <RadioButton
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="ninjas" />
            </RadioGroup>

            <TextView
                android:id="@+id/tvCommonDOB"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:text="dob"
                android:textAppearance="?android:attr/textAppearanceLarge"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/radiogroup"
                tools:layout_constraintLeft_creator="1"
                tools:layout_constraintTop_creator="1" />

            <EditText
                android:id="@+id/editText5"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:ems="10"
                android:inputType="date"
                android:maxLines="1"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintRight_toRightOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/tvCommonDOB"
                tools:layout_constraintLeft_creator="1"
                tools:layout_constraintRight_creator="1"
                tools:layout_constraintTop_creator="1" />

            <TextView
                android:id="@+id/tvCommonLivingCity"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:text="livingCity"
                android:textAppearance="?android:attr/textAppearanceLarge"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/editText5"
                tools:layout_constraintLeft_creator="1"
                tools:layout_constraintTop_creator="1" />

            <EditText
                android:id="@+id/editText34"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:ems="10"
                android:inputType="text"
                android:maxLines="1"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintRight_toRightOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/tvCommonLivingCity"
                tools:layout_constraintLeft_creator="1"
                tools:layout_constraintRight_creator="1"
                tools:layout_constraintTop_creator="1" />

            <TextView
                android:id="@+id/tvCommonPlaceOfBithday"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:text="placeOfBirth"
                android:textAppearance="?android:attr/textAppearanceLarge"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/editText34"
                tools:layout_constraintLeft_creator="1"
                tools:layout_constraintTop_creator="1" />

            <EditText
                android:id="@+id/editText6"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:ems="10"
                android:inputType="text"
                android:maxLines="1"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintRight_toRightOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/tvCommonPlaceOfBithday"
                tools:layout_constraintLeft_creator="1"
                tools:layout_constraintRight_creator="1"
                tools:layout_constraintTop_creator="1" />

            <TextView
                android:id="@+id/textView4"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:text="education"
                android:textAppearance="?android:attr/textAppearanceLarge"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/editText6"
                tools:layout_constraintLeft_creator="1"
                tools:layout_constraintTop_creator="1" />

            <Spinner
                android:id="@+id/spinner_id"
                android:layout_width="0dp"
                android:layout_height="48dp"
                android:layout_marginTop="8dp"
                android:spinnerMode="dialog"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintRight_toRightOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/textView4"
                tools:layout_constraintLeft_creator="1"
                tools:layout_constraintRight_creator="1"
                tools:layout_constraintTop_creator="1" />

        </android.support.constraint.ConstraintLayout>
    </ScrollView>


</android.support.constraint.ConstraintLayout>

回答5:

I have reported the bug to the Google team.

You can view it here.

回答6:

I've spent 2 days attempting to convert layouts to ConstraintLayout in the so-called "stable" release Android Studio 2.2 and I've not got ScrollView to work in the designer. I'm not going to start down the route of adding constraints in XML for Views that are further down the scroll. After all this is supposed to be a visual design tool.

And the number of rendering errors, stack overflows and theme issues I've had has led me to conclude that the whole ConstraintLayout implementation is still riddled with bugs. Unless you are developing simple layouts then I'd leave it well alone until it's had a few more iterations at least.

That's 2 days I'm not going to get back.

回答7:

Since the actual ScrollView is encapsulated in a CoordinatorLayout with a Toolbar ...

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.v7.widget.Toolbar
            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="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:popupTheme="@style/AppTheme.PopupOverlay"/>

    </android.support.design.widget.AppBarLayout>

    <include layout="@layout/list"/>

</android.support.design.widget.CoordinatorLayout>

... I had to define android:layout_marginTop="?attr/actionBarSize" to make the scrolling working:

<?xml version="1.0" encoding="utf-8"?>
<ScrollView
    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"
    android:layout_marginTop="?attr/actionBarSize">

    <android.support.constraint.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <!-- UI elements here -->

    </android.support.constraint.ConstraintLayout>

</ScrollView>

Above also works with NestedScrollView instead of ScrollView. Defining android:fillViewport="true" is not needed for me.

回答8:

New android studio after 2.2 ConstraintLayout now works properly inside ScrollView.

Like this below example:

<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">
<ScrollView
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <android.support.constraint.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">
</android.support.constraint.ConstraintLayout>
    </ScrollView>
</android.support.constraint.ConstraintLayout>

I hope it'll help you ..!