activity_main.xml文件出了什么问题？

Question

当我运行该应用程序时，在第44行出现错误消息：错误：标记不匹配 你能告诉我，这怎么了？ 谢谢

我试图删除该行

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout 
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:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">

<include
    layout="@layout/app_bar_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

   <android.support.design.widget.NavigationView
    android:id="@+id/nav_view"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    android:fitsSystemWindows="true"
    app:headerLayout="@layout/nav_header_main"
    app:menu="@menu/activity_main_drawer" />

<com.getbase.floatingactionbutton.FloatingActionsMenu
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
app:fab_addButtonColorNormal="@color/colorPrimary"
app:fab_addButtonColorPressed="@color/colorPrimary"
app:fab_addButtonPlusIconColor="@color/white"
app:fab_labelStyle="@style/custom_fab"
android:layout_alignParentRight="true">

<com.getbase.floatingactionbutton.FloatingActionsMenu
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">
    app:fab_colorNormal="@color/white

    

第44行出现错误：标记不匹配 单独的代码行是有错误的行。

Answer 1

您在`@ color / white末尾缺少"，并且正在（错误地）关闭fab标签之前。 尝试以下代码，

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout 
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:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">

<include
    layout="@layout/app_bar_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

   <android.support.design.widget.NavigationView
    android:id="@+id/nav_view"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    android:fitsSystemWindows="true"
    app:headerLayout="@layout/nav_header_main"
    app:menu="@menu/activity_main_drawer" />

<com.getbase.floatingactionbutton.FloatingActionsMenu
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
app:fab_addButtonColorNormal="@color/colorPrimary"
app:fab_addButtonColorPressed="@color/colorPrimary"
app:fab_addButtonPlusIconColor="@color/white"
app:fab_labelStyle="@style/custom_fab"
android:layout_alignParentRight="true" />

<com.getbase.floatingactionbutton.FloatingActionsMenu
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:fab_colorNormal="@color/white"/>
</android.support.v4.widget.DrawerLayout>

Answer 2

以下是您的解决方案

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout 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:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:openDrawer="start">

    <include
        layout="@layout/app_bar_main"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <android.support.design.widget.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/nav_header_main"
        app:menu="@menu/activity_main_drawer" />

    <com.getbase.floatingactionbutton.FloatingActionsMenu
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentBottom="true"
        app:fab_addButtonColorNormal="@color/colorPrimary"
        app:fab_addButtonColorPressed="@color/colorPrimary"
        app:fab_addButtonPlusIconColor="@color/white"
        app:fab_labelStyle="@style/custom_fab" />

    <com.getbase.floatingactionbutton.FloatingActionsMenu
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:fab_colorNormal="@color/white" />
</android.support.v4.widget.DrawerLayout>