无法将MockView强制转换为xml中的android.view.ViewGroup
作者:互联网
在检查图形布局时,出现此错误:
Exception raised during rendering:
com.android.layoutlib.bridge.MockView cannot be cast to
android.view.ViewGroup
下面是我发布的activity_main.xml代码:
activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<RelativeLayout
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="@+id/textviewHeading"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="5dp"
android:fontFamily="fonts/Dosis.otf"
android:text="@string/heading_chapter"
android:textSize="25dp"
android:visibility="gone" />
<ListView
android:id="@+id/listviewChapters"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="@+id/imageviewBanner"
android:layout_below="@+id/textviewHeading"
android:layout_marginTop="5dp" >
</ListView>
<ImageView
android:id="@+id/imageviewBanner"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:src="@drawable/banner"
android:visibility="invisible" />
</RelativeLayout>
<ListView
android:id="@+id/list_slidermenu"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:choiceMode="singleChoice"
android:divider="@color/list_divider"
android:dividerHeight="1dp"
android:listSelector="@drawable/list_selector"
android:background="@color/list_background"/>
</android.support.v4.widget.DrawerLayout>
解决方法:
发生此错误是由于抽屉布局的错误实现.
我将三个直接布局放置到抽屉布局中会发生错误.根据Google文档,它直接采用了两种布局.
在“抽屉布局”中,如果放置两个直接布局,则可以解决此问题.这就是为什么我将“框架布局”用作“抽屉布局”下面的父布局,然后最终添加“列表视图”以显示导航抽屉的原因.
activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<FrameLayout
android:id="@+id/frame_container"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<RelativeLayout
android:id="@+id/container"
android:layout_width="wrap_content"
android:layout_height="match_parent" >
<TextView
android:id="@+id/textviewHeading"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="5dp"
android:fontFamily="fonts/Dosis.otf"
android:text="@string/heading_chapter"
android:textSize="25sp"
android:visibility="gone" />
<ListView
android:id="@+id/listviewChapters"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="@+id/imageviewBanner"
android:layout_below="@+id/textviewHeading"
android:layout_marginTop="5dp" >
</ListView>
<ImageView
android:id="@+id/imageviewBanner"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:src="@drawable/banner"
android:visibility="invisible" />
</RelativeLayout>
</FrameLayout>
<ListView
android:id="@+id/list_slidermenu"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="@color/list_background"
android:choiceMode="singleChoice"
android:divider="@color/list_divider"
android:dividerHeight="1dp"
android:listSelector="@drawable/list_selector" />
</android.support.v4.widget.DrawerLayout>
标签:android-xml,android 来源: https://codeday.me/bug/20191029/1956581.html