ConstraintLayout错误:找不到与给定名称匹配的资源 [英] Error with ConstraintLayout: No resource found that matches the given name
问题描述
我学习了如何使用ConstraintLayout.并且有问题.
I learn how to use ConstraintLayout. And have problem.
我的activity_test.xml
My activity_test.xml
<?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"
android:padding="@dimen/default_padding">
<RelativeLayout
android:id="@+id/reserved_layout_search"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="@id/btnScanQRCode"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@id/btnScanQRCode"
app:layout_constraintTop_toTopOf="parent">
<EditText
android:id="@+id/etSearchWorker"
style="@style/EditTextSearch"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
<Button
android:id="@+id/btnClearSearch"
android:layout_width="32dp"
android:layout_height="32dp"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:background="@drawable/ic_clear"/>
</RelativeLayout>
<Button
android:id="@+id/btnScanQRCode"
android:layout_width="@dimen/search_qr_button_size"
android:layout_height="@dimen/search_qr_button_size"
android:background="@drawable/button_qr_background"
android:text="@string/button_qr_text"
android:textColor="@color/white"
app:layout_constraintLeft_toRightOf="@id/reserved_layout_search"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
<TextView
android:id="@+id/tvPlanningCountInfo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:text="ddsadsas"
app:layout_constraintHorizontal_chainStyle="spread"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@id/tvReservedContInfo"
app:layout_constraintTop_toBottomOf="@id/btnScanQRCode"
/>
<TextView
android:id="@+id/tvReservedContInfo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="dsdsadasdasad :44"
app:layout_constraintLeft_toRightOf="@id/tvPlanningCountInfo"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="@id/tvPlanningCountInfo"
/>
<android.support.v7.widget.RecyclerView
android:id="@+id/rvReserved"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="@dimen/default_padding"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@id/tvPlanningCountInfo"
app:layout_constraintBottom_toBottomOf="parent"
/>
</android.support.constraint.ConstraintLayout>
当我构建/重建/清理项目时,我会处理错误:
And when i build/rebuild/clean project i handle error:
/Users/ME/Documents/Projects/testApp/app/src/main/res/layout/activity_test.xml
Error:(14, 49) No resource found that matches the given name (at 'layout_constraintBottom_toBottomOf' with value '@id/btnScanQRCode').
Error:(16, 46) No resource found that matches the given name (at 'layout_constraintRight_toLeftOf' with value '@id/btnScanQRCode').
Error:(56, 46) No resource found that matches the given name (at 'layout_constraintRight_toLeftOf' with value '@id/tvReservedContInfo').
可能是什么问题?也许可以更优化地编写这段代码?
in what may be the problem? Maybe it was possible to write more optimally this piece of code?
但预览有效:
推荐答案
您正在尝试在定义元素之前基于元素设置约束.因此,要解决您的问题,您可以采用两种不同的方式:
You are trying to set a constraint based on a element before you define it. So to fix your problem you have two different ways:
第一个解决方案:通过以下方式替换您的RelativeLayout(@ + id/reserved_layout_search)约束id值:
First solution: Replace your RelativeLayout(@+id/reserved_layout_search) constrains id values by:
@id/btnScanQRCode -> @+id/btnScanQRCode
@id/btnScanQRCode -> @+id/btnScanQRCode
@id/tvReservedContInfo -> @+id/tvReservedContInfo
第二个解决方案:在XML文件的RelativeLayout之前声明btnScanQRCode,btnScanQRCode和tvReservedContInfo小部件.
Second solution: Declare your btnScanQRCode, btnScanQRCode and tvReservedContInfo widgets before your RelativeLayout on the XML file.
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