ConstraintLayout不包装内容 [英] ConstraintLayout not wrapping content
本文介绍了ConstraintLayout不包装内容的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我在cardview中有一个ConstraintLayout. 如图所示，按钮以网格格式排列.但是由于某些原因，在按钮下方显示了空格.我要删除此空白.
I have a constraintLayout inside a cardview. Buttons are arranged in grid format as shown in picture. But for some reason whitespace is displayed below buttons. I want to remove this whitespace.
这是xml代码
<android.support.v7.widget.CardView
android:id="@+id/cvSpecialisations"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
app:cardElevation="2dp"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/bViewAll">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/tvSearchBySpecialisation"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="Search by specialisation"
android:textSize="14dp"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<View
android:id="@+id/vDividerInSpecialisationCard"
style="@style/Divider"
android:layout_width="0dp"
android:layout_height="1dp"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toTopOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/tvSearchBySpecialisation"
app:layout_constraintVertical_bias="0.0" />
<Button
android:id="@+id/bSpecialisation1"
style="@style/Widget.AppCompat.Button.Borderless"
android:layout_width="88dp"
android:layout_height="92dp"
android:layout_marginLeft="32dp"
android:layout_marginStart="32dp"
android:drawablePadding="8dp"
android:drawableTop="@mipmap/ic_launcher"
android:fontFamily="san-serif"
android:paddingLeft="-5dp"
android:paddingRight="-5dp"
android:text="Car"
android:textAllCaps="false"
android:theme="@style/AppTheme.WhiteButton"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="@+id/bSpecialisation2" />
<Button
android:id="@+id/bSpecialisation2"
style="@style/Widget.AppCompat.Button.Borderless"
android:layout_width="88dp"
android:layout_height="92dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="16dp"
android:drawablePadding="8dp"
android:drawableTop="@mipmap/ic_launcher"
android:fontFamily="san-serif"
android:paddingLeft="-5dp"
android:paddingRight="-5dp"
android:text="Car"
android:textAllCaps="false"
android:theme="@style/AppTheme.WhiteButton"
app:layout_constraintLeft_toRightOf="@+id/bSpecialisation1"
app:layout_constraintRight_toLeftOf="@+id/bSpecialisation3"
app:layout_constraintTop_toBottomOf="@+id/vDividerInSpecialisationCard" />
<Button
android:id="@+id/bSpecialisation3"
style="@style/Widget.AppCompat.Button.Borderless"
android:layout_width="88dp"
android:layout_height="92dp"
android:layout_marginEnd="32dp"
android:layout_marginRight="32dp"
android:drawablePadding="8dp"
android:drawableTop="@mipmap/ic_launcher"
android:fontFamily="san-serif"
android:paddingLeft="-5dp"
android:paddingRight="-5dp"
android:text="Car"
android:textAllCaps="false"
android:theme="@style/AppTheme.WhiteButton"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="@+id/bSpecialisation2" />
<Button
android:id="@+id/bSpecialisation4"
style="@style/Widget.AppCompat.Button.Borderless"
android:layout_width="88dp"
android:layout_height="92dp"
android:layout_marginEnd="32dp"
android:layout_marginRight="32dp"
android:drawablePadding="8dp"
android:drawableTop="@mipmap/ic_launcher"
android:fontFamily="san-serif"
android:paddingLeft="-5dp"
android:paddingRight="-5dp"
android:text="Car"
android:textAllCaps="false"
android:theme="@style/AppTheme.WhiteButton"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="@+id/bSpecialisation5" />
<Button
android:id="@+id/bSpecialisation5"
style="@style/Widget.AppCompat.Button.Borderless"
android:layout_width="88dp"
android:layout_height="92dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="14dp"
android:drawablePadding="8dp"
android:drawableTop="@mipmap/ic_launcher"
android:fontFamily="san-serif"
android:paddingLeft="-5dp"
android:paddingRight="-5dp"
android:text="Car"
android:textAllCaps="false"
android:theme="@style/AppTheme.WhiteButton"
app:layout_constraintLeft_toRightOf="@+id/bSpecialisation6"
app:layout_constraintRight_toLeftOf="@+id/bSpecialisation4"
app:layout_constraintTop_toBottomOf="@+id/bSpecialisation2" />
<Button
android:id="@+id/bSpecialisation6"
style="@style/Widget.AppCompat.Button.Borderless"
android:layout_width="88dp"
android:layout_height="92dp"
android:layout_marginLeft="32dp"
android:layout_marginStart="32dp"
android:drawablePadding="8dp"
android:drawableTop="@mipmap/ic_launcher"
android:fontFamily="san-serif"
android:paddingLeft="-5dp"
android:paddingRight="-5dp"
android:text="Car"
android:textAllCaps="false"
android:theme="@style/AppTheme.WhiteButton"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="@+id/bSpecialisation5" />
</android.support.constraint.ConstraintLayout>
</android.support.v7.widget.CardView>
我尝试将宽度和高度更改为match_parent wrap_content
I have tried changing width and height to match_parent wrap_content
推荐答案
您的CardView不会包装内容，因为所有垂直元素均应打包"放置.
Your CardView doesn't wrap content because of all the vertical elements should be placed "packed" chain.
所以我添加了app:layout_constraintVertical_chainStyle="packed"和一些附加的垂直边距:
So I've added app:layout_constraintVertical_chainStyle="packed" and some additional vertical margins:
<android.support.v7.widget.CardView
android:id="@+id/cvSpecialisations"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
app:cardElevation="2dp"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/bViewAll" >
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/tvSearchBySpecialisation"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:text="Search by specialisation"
android:textSize="14dp"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintBottom_toTopOf="@+id/vDividerInSpecialisationCard"
app:layout_constraintVertical_chainStyle="packed"/>
<View
android:id="@+id/vDividerInSpecialisationCard"
style="@style/Divider"
android:layout_width="0dp"
android:layout_height="1dp"
android:layout_marginTop="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginBottom="8dp"
app:layout_constraintTop_toBottomOf="@+id/tvSearchBySpecialisation"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintBottom_toTopOf="@+id/bSpecialisation2"/>
<Button
android:id="@+id/bSpecialisation1"
style="@style/Widget.AppCompat.Button.Borderless"
android:layout_width="88dp"
android:layout_height="92dp"
android:layout_marginLeft="32dp"
android:drawablePadding="8dp"
android:drawableTop="@mipmap/ic_launcher"
android:fontFamily="san-serif"
android:paddingLeft="-5dp"
android:paddingRight="-5dp"
android:text="Car"
android:textAllCaps="false"
android:theme="@style/AppTheme.WhiteButton"
app:layout_constraintTop_toTopOf="@+id/bSpecialisation2"
app:layout_constraintLeft_toLeftOf="parent" />
<Button
android:id="@+id/bSpecialisation2"
style="@style/Widget.AppCompat.Button.Borderless"
android:layout_width="88dp"
android:layout_height="92dp"
android:layout_marginTop="16dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:drawablePadding="8dp"
android:drawableTop="@mipmap/ic_launcher"
android:fontFamily="san-serif"
android:paddingLeft="-5dp"
android:paddingRight="-5dp"
android:text="Car"
android:textAllCaps="false"
android:theme="@style/AppTheme.WhiteButton"
app:layout_constraintTop_toBottomOf="@+id/vDividerInSpecialisationCard"
app:layout_constraintLeft_toRightOf="@+id/bSpecialisation1"
app:layout_constraintRight_toLeftOf="@+id/bSpecialisation3"
app:layout_constraintBottom_toTopOf="@+id/bSpecialisation5" />
<Button
android:id="@+id/bSpecialisation3"
style="@style/Widget.AppCompat.Button.Borderless"
android:layout_width="88dp"
android:layout_height="92dp"
android:layout_marginRight="32dp"
android:drawablePadding="8dp"
android:drawableTop="@mipmap/ic_launcher"
android:fontFamily="san-serif"
android:paddingLeft="-5dp"
android:paddingRight="-5dp"
android:text="Car"
android:textAllCaps="false"
android:theme="@style/AppTheme.WhiteButton"
app:layout_constraintTop_toTopOf="@+id/bSpecialisation2"
app:layout_constraintRight_toRightOf="parent" />
<Button
android:id="@+id/bSpecialisation4"
style="@style/Widget.AppCompat.Button.Borderless"
android:layout_width="88dp"
android:layout_height="92dp"
android:layout_marginEnd="32dp"
android:layout_marginRight="32dp"
android:drawablePadding="8dp"
android:drawableTop="@mipmap/ic_launcher"
android:fontFamily="san-serif"
android:paddingLeft="-5dp"
android:paddingRight="-5dp"
android:text="Car"
android:textAllCaps="false"
android:theme="@style/AppTheme.WhiteButton"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="@+id/bSpecialisation5" />
<Button
android:id="@+id/bSpecialisation5"
style="@style/Widget.AppCompat.Button.Borderless"
android:layout_width="88dp"
android:layout_height="92dp"
android:layout_marginTop="14dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:drawablePadding="8dp"
android:drawableTop="@mipmap/ic_launcher"
android:fontFamily="san-serif"
android:paddingLeft="-5dp"
android:paddingRight="-5dp"
android:text="Car"
android:textAllCaps="false"
android:theme="@style/AppTheme.WhiteButton"
app:layout_constraintTop_toBottomOf="@+id/bSpecialisation2"
app:layout_constraintLeft_toRightOf="@+id/bSpecialisation6"
app:layout_constraintRight_toLeftOf="@+id/bSpecialisation4"
app:layout_constraintBottom_toBottomOf="parent"/>
<Button
android:id="@+id/bSpecialisation6"
style="@style/Widget.AppCompat.Button.Borderless"
android:layout_width="88dp"
android:layout_height="92dp"
android:layout_marginLeft="32dp"
android:drawablePadding="8dp"
android:drawableTop="@mipmap/ic_launcher"
android:fontFamily="san-serif"
android:paddingLeft="-5dp"
android:paddingRight="-5dp"
android:text="Car"
android:textAllCaps="false"
android:theme="@style/AppTheme.WhiteButton"
app:layout_constraintTop_toTopOf="@+id/bSpecialisation5"
app:layout_constraintLeft_toLeftOf="parent" />
</android.support.constraint.ConstraintLayout>
</android.support.v7.widget.CardView>
它应该像这样:
这篇关于ConstraintLayout不包装内容的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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