意外的命名空间“map” - Android Google Maps API [英] Unexpected namespace "map" - Android Google Maps API

问题描述

这是我的XML文件的通用性。最重要的部分是地图片段，它给了我这个错误：为标记片段找到了意想不到的名称空间前缀它似乎没有影响代码，但我很好奇，如果有人知道什么是向上。我已经看到帖子称这是一个Lint问题或Eclipse问题，但我使用的是最新版本的Android Studio。

  <？xml version =1.0encoding =utf-8？> 
< LinearLayout xmlns：android =http://schemas.android.com/apk/res/android
 android：layout_width =fill_parent
 android：layout_height =fill_parent 
 xmlns：map =http://schemas.android.com/apk/res-auto
 android：background =＃FFFFFF
 android：orientation =vertical> 
 
< LinearLayout 
 android：layout_width =wrap_content
 android：layout_height =wrap_content
 android：layout_gravity =center
 android：取向= 水平 > 
 
< Button 
 android：id =@ + id / button_lakeside_webview
 android：layout_width =wrap_content
 android：layout_height =wrap_content
 android：text =Lakeside/> 
 
< Button 
 android：id =@ + id / button_spinner_webview
 android：layout_width =wrap_content
 android：layout_height =wrap_content
 android：text =Spinner/> 
 
< / LinearLayout> 
 
< LinearLayout 
 android：layout_width =wrap_content
 android：layout_height =wrap_content> 
 
< View 
 android：id =@ + id / colored_bar
 android：layout_width =48dp
 android：layout_height =3dp
 android：background =/> 
 
< / LinearLayout> 
 
 <！ - 不确定为什么它会抱怨地图命名空间，下面的代码是Google推荐的 - > 
 
< fragment xmlns：android =http://schemas.android.com/apk/res/android
 xmlns：map =http://schemas.android.com / apk / res-auto
 android：name =com.google.android.gms.maps.SupportMapFragment
 android：id =@ + id / map
 android：layout_width =match_parent
 android：layout_height =match_parent
 map：cameraBearing =0
 map：cameraTilt =30
 map：cameraZoom =16
 map：mapType =normal
 map：uiCompass =false
 map：uiRotateGestures =false
 map：uiScrollGestures =false
 map：uiTiltGestures = false
 map：uiZoomControls =false
 map：uiZoomGestures =false/> 
 
< / LinearLayout> 
  

解决方案

正如您所说，Android中存在已知的错误皮棉。有几个问题提交：

a href =https://code.google.com/p/android/issues/detail?id=159039 =nofollow>问题159039：自定义XML属性不适用于布局XML中的标签

• 问题53283：图书馆计划命名空间仅在根元素上工作

2016年7月14日更新的最后一项声明请再次尝试更新版本的Android Studio（2.2或更高版本），如果问题仍然存在，则会产生新的bug。

作为解决方法，您可以将此属性添加到片段以忽略错误（我测试过了， map：属性按预期工作）：



 工具：忽略=缺少前缀
  




Here's the entirity of my XML file. The imporant part is the map fragment at the end that gives me this error: "Unexpected namespace prefix found for tag fragment" It doesn't seem to impact the code but I'm curious if anyone knows what's up. I've seen posts saying it's a Lint issue or an Eclipse problem but I'm using the latest version of Android Studio.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="fill_parent"
              android:layout_height="fill_parent"
              xmlns:map="http://schemas.android.com/apk/res-auto"
              android:background="#FFFFFF"
              android:orientation="vertical">

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:orientation="horizontal">

        <Button
            android:id="@+id/button_lakeside_webview"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Lakeside"/>

        <Button
            android:id="@+id/button_spinner_webview"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Spinner"/>

    </LinearLayout>

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">

        <View
            android:id="@+id/colored_bar"
            android:layout_width="48dp"
            android:layout_height="3dp"
            android:background="" />

    </LinearLayout>

    <!-- Unsure why it complains about the map namespace, the below code is recommended by Google -->

    <fragment xmlns:android="http://schemas.android.com/apk/res/android"
              xmlns:map="http://schemas.android.com/apk/res-auto"
              android:name="com.google.android.gms.maps.SupportMapFragment"
              android:id="@+id/map"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              map:cameraBearing="0"
              map:cameraTilt="30"
              map:cameraZoom="16"
              map:mapType="normal"
              map:uiCompass="false"
              map:uiRotateGestures="false"
              map:uiScrollGestures="false"
              map:uiTiltGestures="false"
              map:uiZoomControls="false"
              map:uiZoomGestures="false"/>

</LinearLayout>

解决方案

As you say there is a known bug in the Android Lint. There are a couple of issues filed:

• Issue 5002: Bug: Options can't be set on MapFragments included in other layouts
• Issue 159039: Custom XML attributes doesn't work on tag in layout XMLs
• Issue 53283: Library project namespace only working on root element

The last one updated on Jul 14 2016 states that "Please try again on a newer version of Android Studio (2.2 or greater). If the issue still occurs file a new bug."

As a workaround you can add this property to the fragment to ignore the error (I have tested it and the map:properties work as expected):

tools:ignore="MissingPrefix"

这篇关于意外的命名空间“map” - Android Google Maps API的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！