我在android.support.constraint.ConstraintLayout
内的android.support.v7.widget.CardView
上遇到了问题
基本上我想嵌套ConstraintLayout
<android.support.constraint.ConstraintLayout>
<android.support.v7.widget.CardView>
<android.support.constraint.ConstraintLayout>
<TextView/>
<Spinner/>
<android.support.design.widget.TextInputLayout>
</EditText>
<android.support.design.widget.TextInputLayout>
</android.support.constraint.ConstraintLayout>
</android.support.v7.widget.CardView>
</android.support.constraint.ConstraintLayout>
然后,我不知道为什么,第二个ConstraintLayout
孩子没有出现。请在下面查看预览设计。
这是完整的代码
<?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=".FindTourFragment" android:id="@+id/frameLayout2"
tools:layout_editor_absoluteY="25dp">
<include
layout="@layout/toolbar_main"
android:id="@+id/job_list_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<android.support.v7.widget.CardView
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="@+id/card_view"
android:layout_gravity="center"
android:layout_width="match_parent"
android:layout_height="wrap_content"
card_view:cardCornerRadius="4dp"
app:layout_constraintTop_toBottomOf="@id/job_list_toolbar">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="100dp"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Lokasi"
android:id="@+id/textView"
android:layout_marginTop="20dp"
android:layout_marginStart="20dp"
android:layout_marginEnd="20dp"
style="@style/InputLabel"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="parent"/>
<Spinner
android:layout_width="match_parent"
android:layout_height="40dp"
android:id="@+id/spinner"
android:textSize="18sp"
android:layout_marginStart="20dp"
android:layout_marginEnd="20dp"
android:layout_marginTop="15dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@id/textView"/>
<android.support.design.widget.TextInputLayout
android:id="@+id/text_input_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_marginStart="20dp"
android:layout_marginEnd="20dp"
android:textSize="18sp"
app:layout_constraintTop_toBottomOf="@+id/spinner"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent">
<EditText
android:hint="Tanggal Keberangkatan"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="date"
android:ems="10"
android:id="@+id/editText2"
android:clickable="true"/>
</android.support.design.widget.TextInputLayout>
</android.support.constraint.ConstraintLayout>
</android.support.v7.widget.CardView>
<ListView
android:layout_width="match_parent"
android:layout_height="0dp"
android:id="@+id/listview"
app:layout_constraintTop_toBottomOf="@+id/card_view"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintBottom_toBottomOf="parent"/>
</android.support.constraint.ConstraintLayout>
Ps。我也尝试使用模拟器,结果相同。谢谢
答案 0 :(得分:0)
内部TextView
中的ConstraintLayout
具有以下属性:
app:layout_constraintTop_toBottomOf="parent"
这将您的TextView定位在ConstraintLayout的边界之外。由于其他所有内容均受限于此视图,因此其他所有内容均不在ConstraintLayout的范围之内。
更改为仅限于父级的顶部:
app:layout_constraintTop_toTopOf="parent"