Question

嗨，大家好几天前我刚刚开始学习安卓。我很困惑为什么我的下面的XML代码是错误的：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:fitsSystemWindows="true"
    tools:context=".MainActivity">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appBar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay"
        app:elevation="0dp">

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">
            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                android:background="?attr/colorPrimaryDark"
                app:layout_scrollFlags="scroll|enterAlways"
                app:popupTheme="@style/AppTheme.PopupOverlay" />

        </RelativeLayout>
    </android.support.design.widget.AppBarLayout>
  <android.support.v7.widget.RecyclerView
    android:id="@+id/recyclerView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@id/appBar"
    android:layout_above="@+id/linear">
  </android.support.v7.widget.RecyclerView>





    <LinearLayout
        android:id="@+id/linear"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_alignParentBottom="true">


        <EditText
            android:id="@+id/etNeme_room"
            android:layout_width="306dp"
            android:layout_height="match_parent"
            />

        <Button
            android:id="@+id/btnAdd_room"
            style="?android:attr/borderlessButtonStyle"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_gravity="right"
            android:text="Room" />

    </LinearLayout>

</RelativeLayout>

它返回错误：

java.lang.NoSuchMethodError： android.support.v4.view.ViewCompat.getDisplay（Landroid /视图/视图;）Landroid /视图/显示; 在 android.support.v7.widget.RecyclerView.onAttachedToWindow（RecyclerView.java:2546）在android.view.View.dispatchAttachedToWindow（View.java:15395）处 android.view.ViewGroup.dispatchAttachedToWindow（ViewGroup.java:2953）在 android.view.ViewGroup.dispatchAttachedToWindow（ViewGroup.java:2960）在 android.view.ViewGroup.dispatchAttachedToWindow（ViewGroup.java:2960）在 android.view.ViewGroup.dispatchAttachedToWindow（ViewGroup.java:2960）在 android.view.AttachInfo_Accessor.setAttachInfo（AttachInfo_Accessor.java:42）在 com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate（RenderSessionImpl.java:333）在com.android.layoutlib.bridge.Bridge.createSession（Bridge.java:429）在 com.android.ide.common.rendering.LayoutLibrary.createSession（LayoutLibrary.java:368）在 com.android.tools.idea.rendering.RenderTask $ 2.compute（RenderTask.java:567）在 com.android.tools.idea.rendering.RenderTask $ 2.compute（RenderTask.java:549）在 com.intellij.openapi.application.impl.ApplicationImpl.runReadAction（ApplicationImpl.java:863）在 com.android.tools.idea.rendering.RenderTask.createRenderSession（RenderTask.java:549）在 com.android.tools.idea.rendering.RenderTask.lambda $膨胀$ 1（RenderTask.java:680）在java.util.concurrent.FutureTask.run（FutureTask.java:266）at java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1142）在 java.util.concurrent.ThreadPoolExecutor中的$ Worker.run（ThreadPoolExecutor.java:617）在java.lang.Thread.run（Thread.java:745）

添加recyclerview

0 个答案: